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Cil.UNTY OF HA A ' s STATE OF HAWAPI
BILL NO.44
DRAFT 2)
ORDINANCE NO.21 61
AN ORDINANCE AMENDING THE HAWAII COUNTY CODE 1983 (2016 EDITION,
AS AMENDED), RELATING TO THE COUNTY CONSTRUCTION CODE, BY:
1) ADOPTING NEW CHAPTERS 5B (RESIDENTIAL BUILDING CODE) AND 5C
EXISTING BUILDING CODE);
2) AMENDING CHAPTER 5 (CONSTRUCTION ADMINISTRATIVE CODE):
SECTIONS 5-1-2, 5-1-3, 5-1-5, 5-2-2, 5-2-3, 5-2-4, 5-4-21, 5-8-4,AND 5-10-1;
3) AMENDING CHAPTER 5A (BUILDING CODE): SECTIONS 5A-1-3, 5A-1-6,
5A-3-21, 5A-3-22,AND 5A-3-27;
4) AMENDING CHAPTER 5D (ELECTRICAL CODE): SECTIONS 5D-1-3,
AND 5D-1-6;
5) AMENDING CHAPTER 5E (ENERGY CONSERVATION CODE):
SECTION 5E-1-6;AND
6) AMENDING CHAPTER 5F (PLUMBING CODE): SECTION 5F-1-6.
BE IT ORDAINED BY THE COUNCIL OF THE COUNTY OF HAWAII:
PART I. CHAPTER 5B, RESIDENTIAL BUILDING CODE
SECTION 1. The Hawai`i County Code 1983 (2016 Edition, as amended), is amended
by adding a new chapter, establishing a residential building code, to be designated chapter
5B, and to read as follows:
CHAPTER 5I
RESIDENTIAL BUILDING CODE
Article 1. General Provisions.
Section 5B-1-L Title.
This chapter shall be known as the "residential building code."
Section 5B-1-2. Purpose.
Thegurpose of this chapter is to provide minimum standards to safeguard life or limb,
health, property and public welfare by re ulating and controlling the design, constructioi
uua.lity of materials. use and occupa.cy, location and maintenance of all residential
buildings and structures within the County and certain equipment specifically regulated
herein.
Section 5B-1-3. Scope; exceptions.
This chapter shall apply to the design, construction, alteration, movement,
enlargement, replacement, repair, equipment, use and occupancy, location, removal and
demolition of detached one- and two-family dwellings and townhouses not more than three
stories above grade plane in height with a separate means of egress and their accessory
structures not more than three stories above grade plane in height.
Exception: The following shall be permitted to be constructed in accordance with this code
where provided with a residential fire sprinkler system complying with, chapter 26, the
Hawai`i County fire code:
1. Live/work units located in townhouses and complying with the requirements of
Section 419, "Live/Work Units" of the International Building Code as adopted by
chapter 5A, the building code.
2. Owner-occupied lodging houses with five or fewer guestrooms.
3. A care facility with five or fewer persons receiving custodial care within a dwelling
unit.
4. A care facility with five or fewer persons receiving medical care within a dwelling
unit.
5. A care facility for five or fewer persons receiving care that are within a single-
family dwelling.
Section 5B-1-4. Administrative provisions.
Provisions relating to permitting, enforcement, inspection, and other administrative
procedures pertaining to this chapter are contained in chapter 5, the construction
administrative code.
Section 5B-1-5. Existing buildings.
a) Permitted buildings in existence at the time of the adoption of this chapter may have
their existing permitted use or occupancy continued if such use or occupancy was legal
at the time of the adoption of this chapter, provided such continued use does not
constitute a hazard to the general safety and welfare of the occupants and the public.
b) Alteration, repair, addition, and change of occupancy. Alteration, repair, addition, and
change of occupancy to a building or structure in existence at the time of the adoption
of this chapter shall comply with the requirements of the existing building code,
chapter 5C, Hawai`i County Code.
Section 5B-1-6. Definitions.
As used in this chapter, unless it is apparent from the context that a different meaning
is intended:
Accessory structure" means a structure not greater than 3,000 square feet (279 m2) in
floor area, and not over two stories in height, the use of which is customarily accessory to
and incidental to that of the dwelling and which is located on the same lot.
Authority having jurisdiction"means the director of the department of public works,
or the director's authorized representative.
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Building" means any structure used or intended for supporting or sheltering any use
or occupancy. The term shall include but not be limited to, any structure mounted on
wheels such as a trailer, wagon, or vehicle which is parked and stationary for any 24-hour
period, and is used for business or living purposes; provided, however, that the term shall
not include a push cart or push wagon which is readily movable and which does not exceed
25 square feet in area, nor shall the term include a trailer or vehicle, used exclusively for
the purpose of selling any commercial product therefrom, which hold a vehicle license and
actually travels on public or private streets.
To the extent context otherwise permits and/or requires, the definitions of"building" as
used in chapters: 5A, the building code; 5B, the residential building code; 5C, the existing
building code; 5D, the electrical code; 5E, the energy conservation code; and 5F, the
plumbing code; are incorporated by reference herein.
Building work"means the design, construction, alteration, relocation, enlargement,
replacement, repair, removal, demolition of any building or structure, or any other
activities regulated by this chapter.
Chapter" means this chapter.
This code" means the residential building code, contained in chapter 5B, or the
construction administrative code, contained in chapter 5, or both, as the context requires.
Construction code"means collectively: chapter 5, the construction administrative code;
chapter 5A, the building code; chapter 5B, the residential building code; chapter 5C, the
existing building code; chapter 5D, the electrical code; chapter 5E, the energy conservation
code; chapter 5F, the plumbing code; and all administrative rules adopted pursuant to these
chapters.
Dwelling" means any building that contains one or two dwelling units used, intended,
or designed to be built, used, rented, leased, let or hired out to be occupied, or that are
occupied for living purposes.
Existing building" means a building erected prior to the effective date of this chapter.
or one for which a legal permit has been issued.
Existing structure" means a structure erected prior to the effective date of this
chapter, or one for which a legal permit has been issued.
ICC" means the International Code Council.
Owner-builder" means owners or lessees of property who build or improve buildings or
structures on their property for their own use, or for use by their immediate family. This
definition shall not preempt owner-builder by exemption as defined by section 444-2.5,
Hawai`i Revised Statutes.
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Permit" means a formal authorization issued by the authority having jurisdiction that
authorizes performance of specified work, pursuant to the construction code, including the
following chapters and all administrative rules adopted pursuant to the following chapters:
1) 5, the construction administrative code:
2) 5A, the building code;
3) 5B, the residential building code;
4) 5C, the existing building code;
5) 5D, the electrical code;
6) 5E, the energy conservation code; and
7) 5F, the plumbing code.
Person" means any individual, firm, partnership, association, or corporation; or its or
their successors or assigns, according to the context thereof.
Section 5B-1-7. Compliance required.
a) No person shall perform or cause to be performed any building work which does not
comply with the provisions of this code or any permit issued pursuant to this code.
b) No person shall perform any work covered by this code in violation of the provisions of
chapters 444 or 448E, Hawai`i Revised Statutes.
c) Any approval or permit issued pursuant to the provisions of this code shall comply with
all applicable requirements of this code.
d) The granting of a permit, variance, or approval of plans or specifications pursuant to
this code does not dispense with the necessity to comply with any applicable law to
which a permit holder may also be subject.
Section 5B-1-8. Conflict.
a) If any provisions of this code conflict with or contravene provisions of the Hawai`i State
Residential Code or the International Residential Code, 2018 Edition, that have been
incorporated by reference, the provisions of this code shall prevail as to all matters and
questions arising out of the subject matter of such provisions.
b) In situations where two or more provisions of this code and any applicable law, other
than those provided for in subsection (a), cover the same subject matter, the stricter
shall be complied with.
Section 5B-1-9. References to model codes.
a) The codes and standards referenced in this code shall be considered to be part of the
requirements of this code to the prescribed extent of each such reference and as further
regulated in section 5B-1-8.
b) Wherever a model code is referenced in this code, the following shall apply:
1) The International Building Code shall mean the building code, chapter 5A,
Hawai`i County Code;
2) The International Residential Code, shall mean the residential building code,
chapter 5B, Hawai`i County Code;
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3) The International Existing Building Code, shall mean the existing building code,
chapter 5C, Hawai`i County Code;
4) The International Electrical Code shall mean the electrical code, chapter 5D,
Hawaii County Code;
5) The International Energy Conservation Code, shall mean the energy conservation
code, chapter 5E, Hawai`i County Code;
6) The International Plumbing Code shall mean the plumbing code, chapter 5F,
Hawaii County Code;
7) The International Fuel Gas Code, the provisions of the International Fuel Gas
Code shall be deemed to be only guidelines and not mandatory;
8) The International Mechanical Code, the provisions of the International
Mechanical Code shall be deemed to be only guidelines and not mandatory;
9) The International Property Maintenance Code, the provisions of the International
Property Maintenance Code shall be deemed to be only guidelines and not
mandatory; and
10) The International Fire Code shall mean the fire code, chapter 26, Hawaii County
Code.
Exception: Where enforcement of a code provision would violate the conditions of the
listing of the equipment of appliance, the condition of the listing shall govern.
Article 2. Installation Requirements.
Section 5B-2-1. International residential code adopted.
a) The "International Residential Code for One- and Two-family Dwellings, 2018 Edition,"
as published in 2017 by the International Code Council, Incorporated, 500 New Jersey
Avenue, 6th Floor, Washington, DC 20001, is adopted by reference and made a part of
this code, subject to any amendments set forth in this chapter. Hereinafter, the
International Residential Code for One- and Two-family Dwellings, 2018 Edition,"
shall be referred to as the "International Residential Code." The appendices of the
International Residential Code are not adopted unless otherwise provided in this
chapter.
1) The following appendices of the International Residential Code are adopted by
reference and made a part of this code, subject to any amendments set forth in
this chapter:
A) Appendix H, Patio Covers;
B) Appendix M, Home Day Care—R-3 Occupancy; and
C) Appendix Q, Tiny Houses.
2) The following appendix is added to the International Residential Code and made a
part of this code, sub'ect to anyamendments set forth in this chapter: AppendixtPPP
U, Factory-built Housing.
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b) The scope, technical specifications, and exemptions set forth in the International
Residential Code are hereby adopted as the standard for building work covered by this
code, provided there are no specific provisions in any other section of this code covering
the particular matter.
c) A copy of the International Residential Code shall be available for public inspection at
the Hilo and Kailua-Kona offices of the department of public.works and at the office of
the County clerk.
d) The International Residential Code adopted and incorporated by reference into this
code, shall be subject to the amendments hereinafter set forth.
1) Chapter 1, "Scope and Administration," of the International Residential Code is
deleted in its entirety.
2) Chapter 1, Part 2—"Administration and Enforcement" of the International
Residential Code is deleted in its entirety.
3) Section R202, "Definitions," of the International Residential Code is amended by
adding the following definitions:
AUTHORITY HAVING JURISDICTION means the director of the
department of public works, or the director's authorized representative."
BUILDING, ENCLOSED is a building that does not comply with
the requirements for open or partially enclosed building."
BUILDING, OPEN is a building having each wall at least 80
percent open. Ao>=Ag where:
1. Ao = total area of openings in a wall that receives positive
external pressure, in ft2 (m2); and
2. Ag = the gross area of that wall in which Ao is identified, in
ft2 (m2)."
BUILDING, PARTIALLY ENCLOSED is a building that
complies with both of the following conditions:
1. The total area of openings in a wall that receives positive
external pressure exceeds that sum of the areas of
openings in the balance of the building envelope (walls and
roof) by more than 10 percent; and
2. The total area of openings in a wall that receives positive
external pressure exceeds 4 ft2 (0.37 m2) or 1 percent of the
area of that wall, whichever is smaller, and the percentage
of openings in the balance of the building envelope does
not exceed 20 percent.
These conditions are expressed by the following equations:
1. Ao > 1.1Aoi
6
1
2. Ao > 4 ft2 (0.37 m2) or > 0.01 Ag, whichever is smaller, and
Aoi/Agi < 0.20
Where:
Ao, Aq are defined for open building.
Aoi = the sum of the areas of openings in the building
envelope (walls and roof) not including Ao, in ft2 (m2).
Agi = the sum of the gross surface areas of the building
envelope (walls and roof) not including Ag, in ft2 (m2)."
CARPORT is a private garage which is at least 100 percent open
on one side and with 50 percent net openings on another side or
which is provided with anequivalent of such openings on two or
more sides.
A private garage which is 100 percent open on one side and 25
percent open on another side with the latter opening so located to
provide adequate cross ventilation may be considered a carport
when approved by the building official. Carports not open on two
or more sides shall be considered to be a garage."
FAMILY shall be as defined in the Zoning Code except that a
nursing, care home, or other similar facility with not more than
five patients may be considered a family under this code."
FIRE CODE. The State Fire Code as adopted by the State Fire
Council."
PRIVATE GARAGE or GARAGE. A building or portion of a
building in which motor vehicles used by the tenants of the
building or buildings on the premises are stored or kept, without
provisions for repairing or servicing such vehicles for profit."
SLEEPING UNIT. A single unit that provides rooms or spaces
for one or more persons, includes permanent provisions for
sleeping and can include provisions for living, eating, and either
sanitation or kitchen facilities but not both. Such rooms and
spaces that are also part of a dwelling unit are not sleeping
units."
4) Section R202,"Definitions," of the International Residential Code is amended by
amending the following definitions to read as follows:
BUILDING.[Any one or two family dwelling or portion thereof,
including townhouses, used or intended to be used for human
combination thereof, or any accessory structure. For the
Any
structure used or intended for supporting or sheltering any use or
occupancy. The term shall include but not be limited to any
structure mounted on wheels such as a trailer, wagon or vehicle
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which is parked and stationary for any 24-hour period, and is
used for business or living purposes; provided, however, that the
term shall not include a push cart or push wagon which is readily
movable and which does not exceed 25 square feet in area, nor
shall the term include a trailer or vehicle, used exclusively for the
purpose of selling any commercial product therefrom, which hold
a vehicle license and actually travels on public or private streets.
To the extent context otherwise permits and/or requires, the
definitions of"building" as used in the following chapters of the
Hawai`i County Code: 5A, the building code; 5B, the residential
building code; 5C, the existing building code; 5D, the electrical
code; 5E, the energy conservation code; and 5F, the plumbing
code; are incorporated by reference herein."
BUILDING OFFICIAL.[The officer or other designated authority
a duly authorized representative. For the definition applicable in
Chapter 11, see Section N1101.61 The director of the County
department of public works or the director's authorized
representative."
5) Subsection R301.1.1, "Alternative provisions," of the International Residential
Code is amended to read as follows:
R301.1.1 Alternative provisions. As an alternative to the requirements in
Section R301.1, the following standards are permitted subject to the limitations
of this code and the limitations therein. Where engineered design is used in lieu
of or in conjunction with these standards, the design shall comply with the
International Building Code] the Building Code, Chapter 5A, Hawai`i County
Code.
1. AWC Wood Frame Construction Manual (WFCM) 2018.
2. AISI Standard for Cold-Formed Steel Framing—Prescriptive Method for
One- and Two-Family Dwellings (AISI 5230 - 2015).
3. [ICC Standard on the Design and Construction of Log Structures (ICC
100).] ICC Standard for Residential Construction in High-Wind Regions
ICC 600-14)."
6) Subsection R301.1.3, "Engineered design," of the International Residential Code is
amended to read as follows:
R301.1.3 Engineered design. When a building of otherwise conventional
construction contains structural elements exceeding the limits of Section R301 or
otherwise not conforming to this code, these elements shall be designed in
accordance with accepted engineering practice using the Alternative Provisions
listed in R301.1.1. The extent of such design need only demonstrate compliance
of nonconventional elements with other applicable provisions and shall be
compatible with the performance of the conventional framed system. Engineered
design in accordance with the [International Building Code] Building Code,
8
Chapter 5A, Hawai`i County Code, is permitted for all buildings and structures,
and parts thereof, included in the scope of this code."
7) Section R301, "Design Criteria," of the International Residential Code is amended
by adding subsection 301.1.4, "Complete load path and uplift ties,"to read as
follows:
R301.1.4 Complete load path and uplift ties. Blocking, bridging, straps,.
approved framing anchors, or mechanical fasteners shall be designed and
installed to provide continuous ties from the roof to the foundation system.
Sheet metal clamps, ties, or clips, must be formed of galvanized steel or other
approved corrosion-resistant material not less than 0.040 inch (1.01
mm) nominal thickness. Uplift resistance shall be in accordance with Table
R802.11."
8) Table R301.2(1), "Climatic and Geographic Design Criteria," of the International
Residential Code is deleted in its entirety and replaced with the following:
TABLE R301.2(1)
CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA
WIND SEISMIC SUBJECT TO DAMAGE FROM FLOOD
SPED DESIGN HAZARDS
mph)CATEGORY Weathering Termite Decay
or
Figure D2 or E Negligible Very Moderate
Chapter
er 27gHeavytosevereHCC"R301.2(8)
9) Subsection 301.2.1, "Wind design criteria," of the International Residential Code is
amended to read as follows:
R301.2.1 Wind design criteria. Buildings and portions thereof shall be
constructed in accordance with the wind provisions of this code [using] provided
that the ultimate design wind [speed in Table R301.2(1)] speed, VULT,. as
determined from Figure R301.2(5)A, is less than 130 mph. The structural
provisions of this code for wind loads are not permitted where wind design is
required [as specified in Section R301.2.1.1] when VuLT, determined from
Figure,] Figure R301.2(5)(A), is equal to or greater than 130 mph. Where
different construction methods and structural materials are used for various
portions of a building, the applicable requirements of this section for each portion
shall apply. Where not otherwise specified, the wind loads listed in Table
R301.2(2) adjusted for height and exposure using Table R301.2(3) shall be used
to determine design load performance requirements for wall coverings, curtain
walls, roof coverings, exterior windows, skylights, garage doors and exterior
doors. Asphalt shingles shall be designed for wind speeds in accordance with
Section R905.2.4. A continuous load path shall be provided to transmit the
applicable uplift forces in Section R802.11.1 from the roof assembly to the
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foundation. The ultimate design wind speed. VULT, in the State Residential Code
is equal to the basic design wind speed, V, in the Building Code, Chapter 5A,
Hawai`i County Code.
10) Subsection R301.2.1.1, "Wind limitations and wind design required," of the
International Residential Code is amended to read as follows:
R301.2.1.1 Wind limitations and wind design required. The wind
provisions of this code shall not apply to the design of buildings where wind
design is required in accordance with [Figure R301.2(5)13] Subsection R301.2.1.
Exceptions:
1. For concrete construction, the wind provisions of this code shall apply in
accordance with the limitations of Sections R404 and R608.
2. For structural insulated panels, the wind provisions of this code shall apply
in accordance with the limitations of Section R610.
3. For cold-formed steel light-frame construction, the wind provisions of this
code shall apply in accordance with the limitations of Sections R505, R603
and R804.
In regions where wind design is required in accordance with [Figure
R301.2(5)B] Subsection R301.2.1, the design of buildings for wind loads shall be
in accordance with one or more of the following methods:
1. AWC Wood Frame Construction Manual (WFCM) 2018.
2. ICC Standard for Residential Construction in High-Wind Regions (ICC 600:
14).
3. [ASCE Minimum Design Loads for Buildings and Other Structures (ASCE 7
10).
4:] AISI Standard for Cold-Formed Steel Framing—Prescriptive Method for One-
and Two-Family Dwellings (AISI 5230-2015).
514. [International Building-Code] The Building Code, Chapter 5A, Hawai`i
County Code.
The elements of design not addressed by the methods in Items 1 through [514
shall be in accordance with the provisions of this code.
Where ASCE 7 or the International Building Code is used for the design of
Where wind design is required and design is in accordance with the methods
in Items 1 through 3, the building must be provided with opening protection for
windborne debris. Options for opening protection or alternatives to opening
protection shall be in accordance with the Building Code, Chapter 5A, Hawai`i
County Code."
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11) Subsection R301.2.1.2, "Protection of openings" of the International Residential
Code is amended to read as follows:
R301.2.1.2 Protection of openings. Exterior glazing in buildings located in
windborne debris regions shall be protected from windborne debris. Glazed
opening protection for windborne debris shall meet the requirements of the
Large Missile Test ofASTM E1996 and ASTM E1886 as modified in Section
301.2.1.2.1. [Garage door glazed opening protection for windbornc debris shall
meet the requirements of an approved impact resisting standard or
ANSI/DASMA 115.]
Exception] Exceptions:
1. Wood structural panels with a minimum thickness of[not less than]7/16 inch
11 mm) and a maximum panel span of[not more than] 8 feet (2438 mm)
shall be] are permitted for opening protection in one- and two-story buildings
classified as Group R-3 or R-4 occupancy. Panels shall be precut [and] so that
they are attached to the framing surrounding the opening containing the
product with the glazed opening. Panels shall be predrilled as required for
the anchorage method and shall be secured with the attachment hardware
provided and anchors permanently installed on the building. [Attachments
accordance with either Table R301.2(2) or ASCE 7, with the permanent
corrosion resistant attachment hardware provided and anchors permanently
installed on the building.] Attachment in accordance with Table R301.2.1.2
with corrosion-resistant attachment hardware provided and anchors
permanently installed on the building is permitted for buildings with a mean
roof height of 45 feet (13 728 mm) or less,where the ultimate design wind
speed,Via is 180 mph (290 kph) or less.
2. Glazing in accessory structures to the single family dwellings including but
not limited to greenhouses and minor storage sheds.
3. Partially enclosed and open occupancy R-3 buildings shall be permitted to be
designed without unprotected openings subject to the following requirements.
3.1. For each direction of wind, determination of enclosure classification
shall be based on the assumption that all unprotected glazing on
windward walls are openings while glazing on the remaining walls
and roof are intact andare not assumed to be openings.
3.2. Partially enclosed and open occupancy R-3 buildings without wind-
borne debris protection shall also include a residential safe room in
accordance with Section 429, Hawaii residential safe room, of the
Building Code, Chapter 5A, Hawai`i County Code, or alternatively
provide an equivalently sized room structurally protected by
construction complying with Section 429.5, of the Building Code,
Chapter 5A, Hawai`i County Code."
12) Table R301.2.1.2, "Windborne debris protection fastening schedule for wood
structural panels," of the International Residential Code is deleted in its entirety
and replaced with the following:
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TABLE R301.2.1.2
WINDBOURNE DEBRIS PROTECTION FASTENING
SCHEDULE FOR WOOD STRUCTURAL PANELS a,b,c,d
Fastener Spacing
Fastener Type Panel span 4 feet < Panel 6 feet < Panel
4 feet span < 6 feet Span
8 feet
No. 8 Wood screw based 16" 10"8"
anchor with 2-inch embedment
length
No. 10 Wood screw based 16" 12"9"
anchor with 2-inch embedment
length
1/4-inch lag screw based 16" 16" 16"
anchor with 2-inch embedment
length
For SI: 1 inch=25.4 mm, 1 foot=304.8 mm, 1 pound=4.448N=0.454 kg,1 mile per hour=0.447 m/s=1.609 km/h.
a. This table is based on a 175 mph ultimate design wind speed and a mean roofheight of 45 feet.
b. Fasteners shall be installed at opposing ends of the wood structural panel.Fasteners shall be located a
minimum of 1 inch from the edge of the panel.
c. Anchors shall penetrate through the exterior wall covering with an embedment length of 2 inches -
minimum into the building frame.Fasteners shall be located a minimum of 2-1/2 inches from theedge of
concrete block or concrete.
d. Where panels are attached to masonry or masonry/stucco,they shall be attached utilizing vibration-
resistant anchors having a minimum withdrawal capacity of 1,500 pounds."
13) Figure R301.2(5)(a) "Ultimate Design Wind Speeds" of the International
Residential Code is deleted in its entirety and replaced with Figure R301.2(5)(a)
County of Hawai`i Ultimate Wind Speed, VULT, for Components and Cladding, to
read as follows: (Although not underscored, figure is intended to be added.)
12
0
Ultimate Wind Speed(mph)
110
Land Use 120
Agriculture
130
Conservationa 140
7 Rurall 150
1 rt,:..'. ` Urban
t 160
t4` 4','>e t4` I—"Z`1. 1701, .J
x := _ 180
190
i
200
210
ij ,, d' /`t.J `
i,'J1 s ,)' 3 220
120 1 r"4
4 r ice , S
r
i
l 1t r ti r
1s
1
r t'f
r
i 401rg
N
At
t l
y 0 5 10 20 Miles
I II t I i lit
f 4;i
mss
Effective Wind Speed Contour for the Island of Hawaii(ASCE 7-2010)
for components and cladding with mean roof height less than or equal to 100ft,Risk Category II)
Figure R301.2(5)(a)
County of Hawaii
Ultimate Wind Speed, VULT, for Components and Cladding
13
i
14) Figure R301.2(5)(b) "Regions Where Wind Design is Required" of the International
Residential Code is deleted in its entirety and replaced with Figure R301.2(5)(b)
County of Hawai`i Ultimate Wind Debris Zone," to read as follows: (Although not
underscored, figure is intended to be added.)
Ultimate)Basic Wind Speed(mph. IBC 2018)
110
120
130
r' .',
140
150
3
l J, 160
170
a
180
190
200
N ".•• 210
i"' 220
pit r Wind Debris Zone
7",y- .:' 120/
t t ,
I
f
Aye
N l
r
l!..,s
0 5 10 20 Miles
1 1 1 1 1 1 1 1 1
ir
Figure R301.2(5)(b)
County of Hawai`i Ultimate Wind Debris Zone
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15) Subsection R301.2.1.4, "Exposure category," of the International Residential Code
is deleted in its entirety and replaced with the following:
R301.2.1.4 Exposure Category. The exposure category shall be determined
from Figure R301.2.1.4(a) or using the provisions of ASCE 7-10."
16) Section R301, "Design Criteria," of the International Residential Code is amended
by adding Figure R301.2.1.4(a), "Exposure Category Zones for Hawai`i County," to
read as follows: (Although not underscored, figure is intended to be added.)
15
Exposure Category Zones
for buildings with mean roof height less than 130 feet
Based on NOAA land cover data 2002 and land satellite images)
C B
C
0 5 10 20 Miles
Kohala i i i I i i i I
C
N
Mauna Kea
BAHi!o
Kai!un-Kona
V g
Mauna Loa
South Kona
B Land Use
Agriculture
Conservation
Urban
C
Major Roads
Exposure B/C Boundary
Exposure C/D Boundary
Notes:
1.Intermediate exposures,between categories B and C and between C and D,are permitted when substantiated
per ASCE 7 recognized methodology.
2.Sites located within the C(coastal)zone shall be permitted to be evaluated for exposure category B for the wind
directions where an adjacent B zone exists in the applicable upwind sector.
3.Sites located within 600 feet from the coastline shall be exposure category D for onshore wind directions.
4.For buildings whose height is equal to or greater than 130 ft,exposure category shall be determined per Section 1609.4.1.
5.For buildings whose mean roof height is less than or equal to 30 ft,exposure category shall be permitted to be evaluated
per Section 1609.4.
Figure R301.2.1.4(a)
Exposure Category Zones for Hawai`i County
16
17) Subsection R301.2.1.5, "Topographic wind effects," of the International Residential
Code is deleted in its entirety and replaced withthe following:
R301.2.1.5 Topographic wind effects. Topographic wind speed effects shall
be considered in the design of the building. Buildings designed using the
ultimate wind speed as determined from Figures R301.2(5)(a) and wind exposure
categories determined in accordance with section R301.2.1.4 shall be deemed to
comply with this section."
18) Subsection R301.2.1.5.1, "Simplified topographic wind speed-up method," of the
International Residential Code is deleted in its entirety.
19) Section R301, "Design Criteria," of the International Residential Code is amended
by adding Table R301.2(4), "Determination of Seismic Design Category by
Location-Site Class D,"to read as follows:
Table R301.2(4)
Determination of Seismic Design Category by Location-Site Class D
Seismic
Location Design
Category
Hawai`i : North and South Kohala, Hamakua, & North Hilo Districts D2
All other Hawai`i County Districts
20) Subsection R301.2.2.1, "Determination of seismic design category," of the
International Residential Code is amended to read as follows:
R301.2.2.1 Determination of seismic design category. Buildings shall be
assigned a seismic design category in accordance with Table R301.2(4) or Figure
R301.2(2).
21) Subsection R301.2.2.1.1, "Alternate determination of seismic design category," of
the International Residential Code is deleted in its entirety.
22) Subsection R301.2.2.6, "Irregular buildings," of the International Residential Code
is amended to read as follows: (Although not underscored, figures are intended to
be added into this subsection.)
R301.2.2.6 Irregular buildings. "The seismic provisions of this code shall not
be used for structures, or portions thereof, located in Seismic Design Categories
C-;] Do, Di and D2 and considered to be irregular in accordance with this section.
A building or portion of a building shall be considered to be irregular where one
or more of the conditions defined in Items 1 through 7 occur. Irregular
structures, or irregular portions of structures, shall be designed in accordance
with [accepted engineering practice] the Building Code, Chapter 5A, Hawai`i
County Code, to the extent the irregular features affect the performance of the
17
remaining structural system. Where the forces associated with the irregularity
are resisted by a structural system designed in accordance with [accepted
engineering practice] the Building Code, Chapter 5A, Hawai`i County Code, the
remainder of the building shall be permitted to be designed using the provisions
of this code.
1. Shear wall or braced wall offsets out of plane. Conditions where
exterior shear wall lines or braced wall panels are not in one plane
vertically from the foundation to the uppermost story in which they are
required see Figure R301.2.2.6(1).
3 E----- -------OUTOF PLANE
OFFSET IN EXTERIOR
BRACED WALL PANELS
SECTION VIEW SECTION VIEW
Figure R301.2.2.6(1)
Braced Wall Panels Out of Plane
Exception: For wood light-frame construction, floors with cantilevers or
setbacks not exceeding four times the nominal depth of the wood floor
joists, see Figure R301.2.2.6(2), are permitted to support braced wall
panels that are out of plane with braced wall panels below provided that all
of the following are satisfied:
1. Floor joists are nominal 2 inches by 10 inches (51 mm by 254 mm) or
larger and spaced not more than 16 inches (406 mm) on center.
2. The ratio of the back span to the cantilever is not less than 2 to 1.
3. Floor joists at ends of braced wall panels are doubled.
4. For wood-frame construction, a continuous rim joist is connected to
ends of cantilever joists. Wherespliced, the rim joists shall be spliced
using a galvanized metal tie not less than 0.058 inch (1.5 mm) (16
gage) and 1-1/2 inches (38 mm)wide fastened with six 16d nails on
each side of the splice; or a block of the same size as the rim joist and
of sufficient length to fit securely between the joist space at which the
splice occurs, fastened with eight 16d nails on each side of the splice.
18
5. Gravity loads carried at the end of cantilevered joists are limited to
uniform wall and roof loads and the reactions from headers having a
span of 8 feet (2438 mm) or less.
CANTILEVER/SET BACK
SHALLONLY SUPPORT ROOF
AND WALLWEIGHT
ii
w/2 x 12 W/2 x 12
N CANTILEVERSECTIONTHRUCANTLEVR SECTION THRU SET BACK
Figure R301.2.2.6(2)
Braced Wall Panels Supported by Cantilever or Setback
2. Lateral support of roofs and floors. Conditions where a section of floor
or roof is not laterally supported by shear walls or braced wall lines on all
edges. See Figure R301.2.2.6(3).
11
DASHED LINE INDICATES BRACED
WALL LINE BELOW
THERE IS NO BRACED WALL LINE
ON THIS EDGE OFTHE ROOF
V
PLAN VIEW
Figure R301.2.2.6(3)
Floor or Roof Not Supported on all Edges
19
Exception: Portions of floors that do not support shear walls, braced wall
panels above, or roofs shall be permitted to extend not more than 6 feet
1829 mm) beyond a shear wall or braced wall line. See Figure
R301.2.2.6(4).
L _ ROOF OR FLOOR SHALLBE PERMITTED
TO EXTEND UP TO S'BEYOND
THE BRACED WALL LINE
L
PLAN VIEW NO BRACEDWALL PANELABOVE
PERMUTEDAT THIS LOCATION
Figure R301.2.2.6(4)
Roof or Floor Extension Beyond Braced Wall Line
3. Shear wall or braced wall offsets in plane. Conditions where the end of
a braced wall panel occurs over an opening in the wall below and extends
more than 1 foot (305 mm) horizontally past the edge of the opening. This
provision is applicable to shear walls and braced wall panels offset in plane
and to braced wall panels offset out of plane in accordance with the
exception to Item 1. See Figure R301.2.2.6(5).
REQUIRED BRACED
WALL PANEL
I
MORE THAN 1-U"
i I!
SM
II
EXTERIOR ELEVATION EXTERIOR ISOMETRIC
Figure R301.2.2.6(5)
Braced Wall Panel Extension Over Opening
Exception: For wood light-frame wall construction, one end of a braced
wall panel shall be permitted to extend more than 1 foot (305 mm) over an
opening not more than 8 feet (2438 mm) in width in the wall below provided
that the opening includes a header in accordance with all of the following:
1. The building width, loading condition and framing member species
limitations of Table R602.7(1) shall apply.
2. The header is composed of:
2.1. Not less than one 2 x 12 or two 2 x 10 for an opening not more
than 4 feet (1219 mm)wide.
2.2. Not less than two 2 x 12 or three 2 x 10 for an opening not more
than 6 feet (1829 mm) in width.
20
2.3. Not less than three 2 x 12 or four 2 x 10 for an opening not more
than 8 feet (2438 mm) in width.
3. The entire length of the braced wall panel does not occur over an
opening in the wall below.
4. Floor and roof opening. Conditions where an opening in a floor or roof
exceeds the lesser of 12 feet (3658 mm) or 50 percent of the least floor or
roof dimension. See Figure R301.2.2.6(6).
MORETHAN b2/2
IS IRREGULAR
I II
I
MORE THAN b1/2
IS IRREGULAR I Ia
II II 111 II II
PLAN VIEW PLAN VIEW
Figure R301.2.2.6(6)
Opening Limitations for Floor and Roof Diaphragms
5. Floor level offset. Conditions where portions of a floor level are vertically
offset. See Figure R301.2.2.6(7).
Exceptions:
1. Framing supported directly by continuous foundations at the
perimeter of the building.
2. For wood light-frame construction, floors shall be permitted to be
vertically offset where the floor framing is lapped or tied together as
required by Section R502.6.1.
FLOOR JOISTS
CANNOT BE
I j TIED DIRECTLY I
TOGETHER
IlMt
SECTION VIEW SECTION VIEW
Figure R301.2.2.6(7)
Portions of Floor Level Offset Vertically
21
6. Perpendicular shear wall and wall bracing. Conditions where shear
walls and braced wall lines do not occur in two perpendicular directions.
See Figure R301.2.2.6(_8).
I
BRACED WALL LINESARE NOT
PERPENDICULAR
PLAN VIEW
Figure R301.2.2.6(8)
Braced Wall Lines Not Perpendicular
7. Wall bracing in stories containing masonry or concrete
construction. Conditions where stories above grade plane are partially or
completely braced by wood wall framing in accordance with Section R602 or
cold-formed steel wall framing in accordance with Section R603 include
masonry or concrete construction. Where this irregularity applies, the
entire story shall be designed in accordance with [accepted engineering
practice] the Building Code, Chapter 5A, Hawai`i County Code.
masonryExceptions: Fireplaces, chimneys andveneer in accordance withPp
this code.
23) Subsection R303.1, "Habitable rooms," of the International Residential Code is
amended to read as follows:
R303.1 Habitable rooms. [Habitable] All habitable rooms shall have an
aggregate glazing area of not less than [8] 10 percent of the floor area of such
rooms. Natural ventilation shall be through windows, [skylight.,,] doors, louvers
or other approved openings to the outdoor air. Such openings shall be provided
with ready access or shall otherwise be readily controllable by the building
occupants. [The] Unless required otherwise by the Energy Conservation Code,
Chapter 5E, Hawai`i County Code, the minimum openable area to the outdoors
shall be [not le:; than 4] 5 percent of the floor area being ventilated.
Exceptions:
1. The glazed areas need not be openable where the opening is not required by
section R310 and a whole-house mechanical ventilation system is installed in
accordance with Section M1505.
2. The glazed areas need not be installed in rooms where Exception 1 above is
satisfied and artificial light is provided that is capable of producing an
average illumination of 6 footcandles (65 lux) over the area of the room at a
height of 30 inches (762mm) above the floor level.
22
3. Use of sunroom and patio covers, as defined in Section R202, shall be
permitted for natural ventilation if in excess of[48] 65 percent of the exterior
sunroom walls are open, or are enclosed only by insect screening."
24) Subsection R303.3, "Bathrooms," of the International Residential Code is
amended to read as follows:
R303.3 Bathrooms. Bathrooms, water closet compartments, laundry rooms,
and other similar rooms shall be provided with [aggregate glazing arca in
windows of not less than 3 square feet(0.3 m2), one half of which must be
openable] natural ventilation by means of openable exterior openings with an
area not less than one twentieth of the floor area of such rooms with a minimum
of 1 1/2 square feet."
Exception: The glazed areas shall not be required where artificial light and a
local exhaust system are provided. The minimum local exhaust rates shall be
determined in accordance with Section M1505. Exhaust air from the space shall
be exhausted directly to the outdoors."
25) Subsection R309.3, "Flood hazard areas," of the International Residential Code is
amended to read as follows:
R309.3 Flood hazard areas. [For buildings located in flood hazard areae ac
y -- - -
1. Elevated to or above the design flood elevation as determined in accordance
with Section R322.
0.. - . . . y 0. - - . .
constructed in accordance with this code.] Buildings located within areas of
special flood hazards pursuant to Chapter 27, Hawai`i County Code, shall be
designed and constructed in accordance with Chapter 27, Hawai`i County
Code."
26) Subsection R310.2.1, "Minimum opening area," of the International Residential
Code is amended to read as follows:
R310.2.1 Minimum opening area. Emergency and escape rescue openings
shall have a net clear opening of not less 5.7 square feet (0.530 m2). The net clear
opening dimensions required by this section shall be obtained by the normal
operation of the emergency escape and rescue opening from the inside. The net
clear height of the opening shall be not less than 24 inches (610 mm) and the net
clear width shall be not less than 20 inches (508 mm).
Exception] Exceptions:
L Grade floor openings or below-grade openings shall have a net clear opening
area of not less than 5 square feet (0.465 m2).
2. Glass jalousie bladed windows may be used for emergency escape or rescue."
23
27) Subsection R313.2, "One-and two-family dwellings automatic fire sprinkler
systems,"is amended to read as follows:
An automatic residential fire sprinkler system shall be installed in one-and two-
family dwellings.
Exception] Exceptions:
1. An automatic residential fire sprinkler system shall not be required for
additions or alterations to existing buildings that are not already provided
with an automatic residential sprinkler system.
2. In accordance with section 46-19.8, Hawai`i Revised Statutes, "Fire
sprinklers; residences," until June 30, 2027 the installation or retrofittingofp
automatic fire sprinklers or an automatic fire sprinkler system shall not be
required in:
2.1 Any new or existing detached one- or two-family dwelling unit in a
structure used only for residential purposes; and
2.2 Nonresidential agricultural and aquacultural buildings and structures
located outside an urban area.
Provided that Exception 2 shall not apply to new homes that require a variance
from access road or firefighting water supply requirements."
28) Subsection R317.1, "Location required," of the International Residential Code is
amended by amending the first paragraph of this subsection to read as follows:
Paragraphs numbered 1 through 7 that follow this paragraph, shall remain
unchanged.)
R317.1 Location required. Protection of wood and wood-based products from
decay shall be provided in the following locations by the use of naturally durable
wood as approved by the building official, or wood that is preservative-treated in
accordance with AWPA U1 for the species, product, preservative and end use.
Preservatives shall be listed in Section 4 of AWPA Ui."
29) Subsection R318.1, "Subterranean termite control methods," of the International
Residential Code is amended to read as follows:
R318.1 Subterranean termite control methods. [In areas subject to damage
from termites as indicated by Table R301.2(1), protection shall be by one, or a
combination, of the following methods:] Methods of protection shall be one of
items 1, 2 or 3 and one of items 4, 5, or 6.
1. Chemical termiticide [tr utment in accordance with], as provided in
Section R318.2.
2. Termite-baiting system installed and maintained [in accordance with]
according to the label.
3. Physical barriers, as provided in Section R318.3 and used in locations as
specified in Section R317.1.
4. Pressure-preservative-treated wood in accordance with [ -
Section R317.1.
4. Naturally durable termite resistant wood.
24
tion R318.3 and used in locations
as specified in Section R317.1.]
6 ]5. Cold-formed steel framing in accordance with Sections R505.2.1 and
R603.2.1.
6. Naturally durable termite-resistant wood as approved by the building
official."
30) Subsection R318.4, "Foam plastic protection," of the International Residential
Code is amended to read as follows:
R318.4 Foam plastic protection. [In areas where the probability of termite
infestation is "very heavy" as indicted in Figure R301.2(7), extruded] Extruded
and expanded polystyrene, polyisocyanurate and other foam plastics shall not be
installed on the exterior face or under interior or exterior foundation walls or
slab foundations located below grade. The clearance between foam plastics
installed above grade and exposed earth shall not be [ ] less than 6 inches
152mm).
Exceptions] Exception:
y --
are entirely of noncombustible materials or pressure preservative treated
weed.
2. Where in addition to the requirements of Section R318.1, an approved
method of protecting the foam plastic and structure from subterranean
termite damage is used.
3-] On the interior side of basement walls."
31) Section R318, "Protection Against Subterranean Termites," of the International
Residential Code is amended by adding Subsection R318.5, "Water splash,"to
read as follows:
R318.5 Water splash.Where wood-frame walls and partitions are covered on
the interior with plaster, tile or similar materials and are subject to water
splash, the framing shall be protected with approved waterproof paper."
32) Section R318, "Protection Against Subterranean Termites," of the International
Residential Code is amended by adding Subsection R318.6, "Pipe and other
penetrations,"to read as follows:
R318.6 Pipe and other penetrations. Insulations around plumbing pipes
shall not pass through ground floor slabs. Openings around pipes or similar
penetrations in a concrete or masonry slab, which is in direct contact with earth,
shall be filled with non-shrink grout, or other approved physical barrier."
25
33) Subsection R320.1, "Scope," of the International Residential Code is amended to
read as follows:
R320.1 Scope. Where there are four or more dwelling units or sleeping
units in a single structure, the following provisions [of Chapter 11 of the
International Building Code] for Group R-3 [shall] apply:
1. For construction of buildings or facilities of the State and County
governments, compliance with Section 103-50, Hawai`i Revised Statutes,
administered by the Disability and Communication Access Board, State of
Hawai`i.
2. Department of Justice's Americans with Disabilities Act Standards for
Accessible Design.
3. Housing and urban development recognized "safe harbors" for compliance
with the Fair Housing Acts design and construction requirements.
4. Other pertinent laws relating with disabilities shall be administered and
enforced by agencies responsible for their enforcement.
Prior to the issuance of a building permit, the owner (or the owner's
representative, professional architect, or engineer), shall submit a statement
that all requirements relating to accessibility for persons with disabilities will be
complied with."
34) Subsection R322.2, "Flood hazard areas (including A Zones)," of the International
Residential Code is amended to read as follows:
R322.2 Flood hazard areas (including A Zones). [Areas that have been
determined to be prone to flooding and that are not subject to high velocity wave
been delineated ac subject to wave heights between 1 feet (457 mm) and 3 feet
914 mm) or otherwise designated by the jurisdiction shall be designated as
Buildings and structures constructed in whole or in part in flood hazard ar nJ
shall be designed and constructed in accordance with Sections R322.2.1 through
R322.2.3.] Buildings located within areas of special flood hazards pursuant to
Chapter 27, Hawai`i County Code, shall be designed and constructed in
accordance with Chapter 27, Hawaii County Code."
35) Section R323, "Storm Shelters" of the International Residential Code, is amended
to read as follows:
SECTION R323
STORM-SHELTERS] HAWAII RESIDENTIAL SAFE ROOMS
R323.1 General. This section applies to storm shelters where constructed as
separate detached buildings or where constructed as safe rooms within buildings
26
for the purpose of providing refuge from storms that produce high winds, such as
tornados and hurricanes. In addition to other applicable requirements in this
code, storm shelters shall be constructed in accordance with ICC/NSSA-500 or
Subsection R323.2.
R323.2 Performance-based design criteria. The residential safe
room shall meet the minimum performance specifications of Sections
323.2.1 through 323.11.
R323.2.1 Intent and scope. The intent of the residential safe room
is to temporarily provide an enhanced protection area, fully enclosed
within a dwelling or within an accessory structure to a residence,
which is designed and constructed to withstand the wind pressures,
windborne debris impacts, and other requirements of this section.
R323.2.2 Alternative standards.
1. Manufactured safe room designs subject to approval. A
manufactured safe room or safe room kit may be substituted if
documentation is submitted and approved by the building official.
The safe room shall be engineered, tested, and manufactured to
meet or exceed the criteria of this section.
2. FEMA in-residence shelter designs permitted. It shall be
permissible to build FEMA In-Residence Shelters of up to 64
square feet of floor area with walls up to 8 feet long that are built
in accordance with construction details of FEMA 320.
R323.3 Site criteria. Residential safe rooms shall not be constructed
within areas subject to stream flooding, coastal flooding or dam failure
inundation within any of the following areas:
1. FEMA Special Flood Hazard Areas (SFHA) subject to rainfall
runoff flooding or stream or flash flooding;
2. Coastal zones "V" or"A"identified in the Flood Insurance Rate
Map (FIRM) issued by FEMA for floodplain management
purposes, in which the flood hazard are tides, storm surge, waves,
tsunamis, or a combination of these hazards; or
3. Areas subject to dam failure inundation as determined by the
Department of Land and Natural Resources.
R323.4 Size of safe room. The safe room shall be designed to provide
a minimum of 15 square feet per person in a room which does not need
to exceed 120 square feet (11 m2) of floor area.
R323.5 Provisions for exiting. The safe room shall be equipped with
an inward-swinging interior door and an impact-protected operable
window or exterior door suitable for a means of alternative exiting in
an emergency.
27
R323.6 Design for dead, live, wind, rain, and impact loads.
R323.6.1 Structural integrity criteria.
1. The residential safe room shall be built with a complete
structural system and a complete load path for vertical and
lateral loads caused by gravity and wind.
2. The building that the residential safe room is in shall be assumed
to be destroyed by the storm and shall not be taken as offering
any protective shielding to the safe room enclosure.
3. The ceiling structure and wall shall be capable of supporting a
superimposed debris load of the full weight of any building floors
and roof above, but not less than 125 psf.
4. The residential safe room enclosure shall be capable of
simultaneously resisting lateral and uplift wind pressures
corresponding to a 145 mph 3-second peak gust ultimate design
wind speed, determined in accordance with ASCE — 7, Minimum
Design Loads for Buildings and Other Structures. The site
exposure factor shall be based on exposure C or the exposure
shown in Figure R301.2.1.4(a), whichever is the greater. The
values for the gust factor and the directionality factor shall be
taken as 0.85. Topographic wind amplification caused by
mountainous terrain shall be considered in accordance with the
building code. Internal pressure shall be determined in
accordance with ASCE— 7.
5. The residential safe room shall be anchored to a foundation
system capable of resisting the above loading conditions.
R323.6.2 Windborne debris impact protection of building
enclosure elements. The entire enclosure of the safe room, including
all walls, ceilings, and openings, fixed or operable windows, and all
entry doors into the safe room, shall meet or exceed Level D
requirements of ASTM E 1996 (Table 323.6.1), or be an approved
assembly listed in Section 323.6.4. Any wall or ceiling penetration
greater than 4 square inches shall be considered an opening.
Exception: Electrical outlet boxes and interior lighting switches not
penetrating more than 2.5-inches into the interior wall surface and a
plumbing piping or conduit not greater than 1.5-inch in diameter shall
be exempted from this requirement.
R323.6.3 Cyclic pressure loading of glazing and protective
systems. Impact protective systems shall meet the ASTM E 1996
cyclic pressure requirement for the loading given in Table 323.6.1.
28
Table 323.6.1
WINDBORNE DEBRIS PROTECTION AND CYCLIC PRESSURE
CRITERIA FOR RESIDENTIAL SAFE ROOMS
Enclosure Wall
ASTM E Ceiling, and Floor
1996 Debris Missile Debris Cyclic Air Pressure
Missile Impact Testing- maximum
Level Size Speed inward and
Rating maximum outward
pressures
2 x 4 weighing 9.0
lb. +/- 0.25 lb., 50 ft./sec. 35 psf inwardDandwithmin. or at least 45 psf outwardlength8ft. 34 mph
4-inch
R323.6.2 Approved debris impact resistant wall assemblies. The
following methods of wall assembly construction shall be deemed to
comply with Section R323.6.2:
1. 3/4-inch plywood on wood studs spaced at 16 inches on-center
with#8 X 3 inch wood screws at 6 inches on-center.
2. 3/4-inch plywood attached to double studs spaced at 16 inches on-
center with #8 X 3 inch wood screws at 6 inches on-center.
3. 8-1/4 inch cementitious lap siding over 22 gage sheet metal
attached to 3505-162-33 studs spaced at 24 inches on-center.
4. 8-1/4 inch cementitious lap siding attached to 3505-162-33 studs
spaced at 24 inches on-center studs with interior 3/4-inch interior
plywood sheathing.
5. 8-1/4 inch cementitious lap siding attached to 3505-162-33 studs
spaced at 24 inches on-center with 1/2-inch interior 22 gage sheet
metal composite gypsum wallboard.
6. 8-1/4 inch cementitious lap siding attached to 2 inch X 4 inch
wood studs spaced at 16 inches on-center with 1/2-inch interior 22
gage sheet metal composite gypsum wallboard.
7. 8-1/4 inch cementitious lap siding attached to 2 inch X 4 inch
wood studs spaced at 16 inches on-center with 22 gage sheet
metal and 1/2-inch interior gypsum wallboard.
8. Cementitious lap siding attached to 5/8-inch structural plywood
on 2 inch X 4 inch wood studs spaced at 16 inches on-center.
9. Cementitious-panel siding attached to 5/8-inch structural
plywood on 2 inch X 4 inch or 362S-137-43 steel studs spaced at
16 inches on-center.
10. EFS with 1/2-inch dens-glass gold exterior sheathing on 362S-
137-43 steel studs spaced at 16 inches on-center and 1/2-inch
interior gypsum wallboard.
11. 24 gage steel sheet (50 ksi) on girts.
12. Concrete with a thickness of 4 inches with reinforcing.
29
13. Concrete masonry units with a thickness of 6 inches with partial
grouting and reinforcing spaced at 24 inches on-center.
14. Concrete masonry units with a thickness of 8 inches with partial
grouting and reinforcing spaced at 24 inches on-center.
15. Interior or exterior wall with laterally braced 2 inch x 4 inch wood
studs with sheathing on either side of 22 gage sheet metal.
Sheathing shall be attached to studs with fasteners at 6 inches (152
mm) on center for edge and field fastening.
R323.7 Ventilation. The residential safe room shall be naturally
ventilated to allow the enclosure to have approximately one air change
every two hours. This requirement may be satisfied by 12 square
inches of venting per occupant. There shall be at least two operable
vents. The vents shall be protected by a cowling or other device that
shall be impact tested to comply with ASTM E 1996-14 Level D.
Alternatively, the room shall be evaluated to determine if the openings
are of sufficient area to constitute an open or partially enclosed
condition as defined in ASCE 7.
R323.8 Communications. The residential safe room shall be
equipped with a phone line and telephone that does not rely on a
separate electrical power outlet. Alternatively, a wireless telephone
shall be permitted to rely on an Uninterruptible Power Supply(UPS)
battery device.
R323.9 Construction documents. Construction documents for the
residential safe room shall be directly prepared by a Hawaii licensed
professional structural engineer.
R323.10 Special inspection. The construction or installation of the
residential safe room shall be verified for conformance to the drawings
in accordance with the appropriate requirements of Chapter 17 of the
International Building Code.
R323.11 Notification. The owner of the safe room shall notify the
State Department of Defense and County Civil Defense Agency of the
property's Tax Map Key or Global Positioning System coordinates."
36) Section R326, "Swimming Pools, Spas and Hot Tubs" of the International
Residential Code, is amended to read as follows:
R326.1 General. [The design and construction of pools and spas shall
ional Swimming Pool and Spa Code.]
Swimming pools shall comply with the requirements of sections R326.2
through R326.4 and other applicable sections of this code.
30
R326.2. Definition. "SWIMMING POOL" shall, for the purposes of this
section, have the following meaning: "Any structure intended for swimming,
recreational bathing or wading that contains water over 24 inches (610 mm)
deep. This includes in-ground, above-ground and on-ground pools: hot tubs;
spas and fixed-in-place wading pools."
R326.3 Residential swimming pools. Residential swimming pools shall
comply with Sections R326.3.1 through R326.3.4.
Exception:A swimming pool with a power safety cover or a spa with a
safety cover complying with ASTM F 1346 need not comply with Section
R326.3.
R326.3.1 Barrier height and clearances. The top of the barrier shall be at
least 48 inches (1219 mm) above grade measured on the side of the barrier
that faces away from the swimming pool. The vertical clearance between
grade and the bottom of the barrier shall be not greater than 2 inches (51
mm) measured on the side of the barrier that faces away from the swimming
pool. Where the top of the pool structure is above grade, the barrier is
authorized to be at ground level or mounted on top of the pool structure, and
the vertical clearance between the top of the pool structure and the bottom of
the barrier shall be not greater than 4 inches (102 mm).
R326.3.1.1 Openings. Openings in the barrier shall not allow passage of a 4-
inch-diameter (102 mm) sphere.
R326.3.1.2 Solid barrier surfaces. Solid barriers which do not have
openings shall not contain indentations or protrusions except for normal
construction tolerances and tooled masonry joints.
R326.3.1.3 Closely spaced horizontal members. Where the barrier is
composed of horizontal and vertical members and the distance between the
tops of the horizontal members is less than 45 inches (1143 mm), the
horizontal members shall be located on the swimming pool side of the fence.
Spacing between vertical members shall be not greater than 1.75 inches (44
mm) in width. Where there are decorative cutouts within vertical members,
spacing within the cutouts shall be not greater than 1.75 inches (44 mm) in
width.
R326.3.1.4 Widely spaced horizontal members. Where the barrier is
composed of horizontal and vertical members and the distance between the
tops of the horizontal members is 45 inches (1143 mm) or more, spacing
between vertical members shall be not greater than 4 inches (102 mm).
Where there are decorative cutouts within vertical members, spacing within
the cutouts shall be not greater than 1.75 inches (44 mm) in width.
31
R326.3.1.5 Chain link dimensions. Mesh size for chain link fences shall be
not greater than a 2.25 inch square (57 mm square) unless the fence is
provided with slats fastened at the top or the bottom which reduce the
openings to not more than 1.75 inches (44 mm).
R326.3.1.6 Diagonal members. Where the barrier is composed of diagonal
members, the opening formed by the diagonal members shall be not greater
than 1.75 inches (44 mm).
R326.3.1.7 Gates.Access doors or gates shall comply with the requirements
of Sections R326.3.1.1 through R326.3.1.6 and shall be equipped to
accommodate a locking device. Pedestrian access gates shall open outward
away from the pool and shall be self-closing and have a self-latching device.
Gates other than pedestrian access gates shall have a self-latching device.
Where the release mechanism of the self-latching device is located less than
54 inches (1372 mm) from the bottom of the door or gate, the release
mechanism shall be located on the pool side of the door or gate at least 3
inches (76 mm) or more, below the top of the door or gate, and the door or
gate and barrier shall be without openings greater than 0.5 inch (12.7 mm)
within 18 inches (457 mm) of the release mechanism.
R326.3.1.8 Dwelling wall as a barrier.Where a wall of a dwelling serves
as part of the barrier, one of the following shall apply:
1. Doors with direct access to the pool through that wall shall be
equipped with an alarm that produces an audible warning when
the door and/or its screen, if present, are opened. The alarm shall
be listed in accordance with UL 2017. The audible alarm shall
activate within 7 seconds and sound continuously for a minimum
of 30 seconds after the door and/or its screen, if present, are
opened and be capable of being heard throughout the house
during normal household activities. The alarm shall
automatically reset under all conditions. The alarm shall be
equipped with a manual means, such as touchpad or switch, to
temporarily deactivate the alarm for a single opening. Such
deactivation shall last for not more than 15 seconds. In dwellings
not required to be Accessible, Type A or Type B units, the
deactivation switch shall be located 54 inches (1372 mm) or more
above the threshold of the door. In dwellings required to be
Accessible, Type A or Type B units, the deactivation switch shall
be located not higher than 54 inches (1372 mm) and not less
than 48 inches (1219 mm) above the threshold of the door.
2. The pool shall be equipped with a power safety cover that
complies with ASTM F 1346.
32
3. Other means of protection, such as self-closing doors with self-
latching devices, which are approved. shall be accepted so long as
the degree of protection afforded is not less than the protection
afforded by Section R326.3.1.8, Item 1 or 2.
R326.3.1.9 Pool structure as barrier. Where an aboveground pool
structure is used as a barrier or where the barrier is mounted on top of the
pool structure, and the means of access is a ladder or steps, then the ladder
or steps either shall be capable of being secured, locked or removed to prevent
access, or the ladder or steps shall be surrounded by a barrier which meets
the requirements of Sections R326.3.1.1 through R326.3.1.8. When the ladder
or steps are secured, locked or removed, any opening created shall not allow
the passage of a 4-inch diameter (102 mm) sphere.
R326.3.2 Indoor swimming pools. Walls surrounding indoor swimming
1poolsshallnotberequiredtocomply with Section R326.3.1.8.
R326.3.3 Prohibited locations. Barriers shall be located so as to prohibit
permanent structures, equipment or similar objects from being used to climb
the barriers.
R326.4 Entrapment avoidance. Suction outlets shall be designed and
installed in accordance with ANSI/APSP-7."
37) Section R401, "General," of the International Residential Code, is amended by
adding subsection R401.5, "Post or pier foundations," to read as follows:
R401.5 Post or pier foundations. Raised floor systems supported by post or
pier foundations shall be designed in accordance with the Building Code,
Chapter 5A, Hawai`i County Code."
38) Subsection R402.2.1, "Materials for concrete," of the International Residential
Code is amended to read as follows:
R402.2.1 Materials for concrete. Materials for concrete shall comply with
the requirements of Section R608.5.1. The maximum water to cement ratio for
concrete slabs-on-grade shall not exceed 0.50."
39) Section R403, "Footings," of the International Residential Code is amended by
adding subsection R403.1.6.2, "Concrete strap type anchors," to read as follows:
R403.1.6.2 Concrete strap-type anchors. Concrete strap-type anchors
made out of cold-formed steel shall not be used along the perimeter edges of a
slab-on-grade where the steel does not have at least 1-1/2 inches side cover or
other adequate protection."
33
40) Section R403, "Footings," of the International Residential Code is amended by
adding subsection R403.1.6.3, "Anchor bolts at the perimeter edge of a slab on
grade,"to read as follows:
R403.1.6.3 Anchor bolts at the perimeter edge of a slab-on-grade.
Anchor bolts must be hot dipped galvanized in accordance with ASTM
F2329 and have a minimum concrete side cover of 1-1/2 inches unless
provisions have been made to protect the anchor bolts from corrosion."
41) Subsection R406.1, "Concrete and masonry foundation dampproofing," of the
International Residential Code is deleted in its entirety.
42) Subsection R406.2, "Concrete and masonry foundation waterproofing," of the
International Residential Code is amended to read as follows:
R406.2 Concrete and masonry foundation waterproofing. [In ares where
exterior] Exterior foundation walls that retain earth and enclose interior spaces
and floors below grade shall be waterproofed from [the higher of(a)] the top of
the footing [or (b) 6 inches (152 mm)below the top of the basement floor,] to the
finished grade. Walls shall be waterproofed in accordance with one of the
following:
1. Two-ply hot-mopped felts.
2. Fifty-five-pound (25 kg) roll roofing.
3. Six mil (0.15 mm) polyvinyl chloride.
4.Six mil (0.15 mm) polyethylene.
5,13. Forty-mil (1 mm) polymer-modified asphalt.
6-]4. Sixty-mil (1.5 mm) flexible polymer cement.
7-]5. One-eighth-inch (3 mm) cement-based, fiber-reinforced,waterproof
coating.
6. Sixty-mil (1.5 mm) solvent-free liquid-applied synthetic rubber.
All joints in membrane waterproofing shall be lapped and sealed with an
adhesive compatible with the membrane.
Exception: Organic-solvent-based products such as hydrocarbons,
chlorinated hydrocarbons, ketones and esters shall not be used for ICF walls
with expanded polystyrene form material. Use of plastic roofing cements,
acrylic coatings, latex coatings, mortars and pargings to seal ICF walls is
permitted. Cold-setting asphalt or hot asphalt shall conform to type C of
ASTM D 449. Hot asphalt shall be applied at a temperature of less than
200°F (93°C)."
34
43) Subsection R406.3, "Dampproofing for wood foundations," of the International
Residential Code is amended to read as follows:
R406.3 [Dampproofing] Waterproofing for wood foundations. Wood
foundations enclosing habitable or usable spaces located below grade shall be
dampproofcd] waterproofed in accordance with [Sections R406.3.1 through
R406.3.4] Section R406.2."
44) Subsection R406.3.2, "Below-grade moisture barrier," of the International
Residential Code is amended to read as follows:
R406.3.2 Below-grade [ waterproofing. [A 6 mil thick
0.15 mm)polyethylene film] One of the waterproofing systems listed in R406.2
shall be applied over the below grade portion of exterior foundation walls prior to
backfilling. [Joints in the polyethylene film shall be lapped 6 inches (152 mm)
and coaled with adhesive.] The top edge of the [polyethylene film] waterproofing
shall be bonded to the sheathing to form a seal. Film areas at grade level shall be
protected from mechanical damage and exposure by a pressure-preservative
treated lumber or plywood strip attached to the wall several inches above
finished grade level and extending approximately 9 inches (229 mm) below
grade. The joint between the strip and the wall shall be caulked full length prior
to fastening the strip to the wall. A'' - . . -:, :.-- ] Other coverings
appropriate to the architectural treatment [shall be permitted to] may also be
used. The [polyethylene film] waterproofing shall extend down to the bottom of
the wood footing plate but shall not overlap or extend into the gravel or crushed
stone footing."
45) Subsection R406.4, "Precast concrete foundation system dampproofing," of the
International Residential Code is deleted in its entirety.
46) Section R406, "Foundation Waterproofing and Damp-proofing," of the
International Residential Code is amended by adding subsection R406.5, "Cold
formed steel protection of sill track," to read as follows:
R406.5 Cold formed steel protection of sill track. Cold formed steel
framing sills that directly bear on concrete or masonry that is in direct contact
with earth shall be shielded along the exterior flange and bottom of the sill track
with a self-adhered rubberized asphalt flashing material with a minimum
thickness of 25 mil (0.64 mm) or other moisture barrier conforming to ASTM
D412, D570, and E96/E96M."
47) Section R408, "Under-Floor Space," of the International Residential Code is
amended by adding subsection R408.8, "Under-floor clearance," to read as follows: ...
R408.8 Under-Floor Clearance. Minimum clearance between the bottom of
floor joists or bottom of floors without joists and the ground beneath is 24 inches
610 mm); the minimum clearance between the bottom of girders and the ground
is 18 inches (457 mm).
35
Exception: Open slat wood decks must have ground clearance of at
least 6 inches (152 mm) for any wood member."
48) Subsection R602.10.9, `Braced wall panel support," of the International
Residential Code shall be amended to read as follows:
R602.10.9 Braced wall panel support.Braced wall panel support shall be
provided as follows:
1. Cantilevered floor joists complying with Section R502.3.3 shall be permitted
to support braced wall panels.
2. Raised floor system post or pier foundations supporting braced wall panels
shall be designed in accordance with [accepted engineering practice] the
Building Code, Chapter 5A, Hawaii County Code.
3. Masonry stem walls with a length of 48 inches (1219 mm) or less supporting
braced wall panels shall be reinforced in accordance with Figure R602.10.9.
Masonry stem walls with a length greater than 48 inches (1219 mm) .
supporting braced wall panels shall be constructed in accordance with
Section R403.1 Methods ABW and PFH shall not be permitted to attach to
masonry stem walls.
4. Concrete stem walls with a length of 48 inches (1219 mm) or less, greater
than 12 inches (305 mm) tall and less than 6 inches (152 mm) thick shall
have reinforcement sized and located in accordance with Figure R602.10.9."
49)- Subsection R806.1, "Ventilation required," of the International Residential Code is
amended to read as follows:
R806.1 Ventilation required. Enclosed attics and enclosed rafter
spaces formed where ceilings are applied directly to the underside of
roof rafters shall have cross ventilation for each separate space by
ventilating openings protected against the entrance of rain or snow.
Ventilation openings shall have a least dimension of 1/16 inch (1.6 mm)
minimum and 1/4 inch (6.4 mm) maximum. Ventilation openings
having a least dimension larger than 1/4 inch (6.4 mm) shall be
provided with corrosion-resistant wire cloth screening, hardware cloth,
perforated vinyl or similar material with openings having a least
dimension of 1/16 inch (1.6 mm) minimum and 1/4 inch (6.4 mm)
maximum. Openings in roof framing members shall conform to the
requirements of Section R802.7. Required ventilation openings shall
open directly to the outside air and shall be protected to prevent the
entry of birds, rodents, snakes and other similar creatures.
Exception: The attic space shall be permitted to be unvented when
the design professional determines it would be beneficial to eliminate
ventilation openings to reduce salt-laden air and maintain relative
humidity 60 percent or lower to:
1. Avoid corrosion to steel components;
2. Avoid moisture condensation in the attic space; or
36
3. Minimize energy consumption for air conditioning or ventilation
by maintaining satisfactory space conditions in both the attic and
occupied space below."
50) Chapter 11, "Energy Efficiency," of the International Residential Code is deleted
in its entirety. Refer to the Energy Conservation Code, Chapter 5E, Hawai`i
County Code.
51) Subsection M1301.1, "Scope," of the International Residential Code shall be
amended to read as follows:
M1301.1 Scope. The provisions of this chapter shall govern the installation of
mechanical systems not specifically covered in other chapters applicable to
mechanical systems. Installations of mechanical appliances, equipment and
systems not addressed by this code shall comply with the applicable provisions of
2 -:
nationally published codes or standards and with the Plumbing Code, Chapter
5F, Hawai`i County Code.
52) Subsection M1307.4.2, "Mechanical ventilation," of the International Residential
Code shall be amended to read as follows:
M1307.4.2 Mechanical ventilation. Indoor locations intended for hydrogen-
generating or refueling operations shall be ventilated in accordance with [Section
1/.
appliances having an ignition source shall be located so that the source of
ignition is below the mechanical ventilation outlet(s).] the applicable provisions
of nationally published mechanical codes or standards."
53) Subsection M1901.1, "Clearances," of the International Residential Code shall be
amended to read as follows:
M1901.1 Clearances. Freestanding or built-in ranges shall have a vertical
clearance above the cooking top of not less than 30 inches (762 mm) to
unprotected combustible material. Reduced clearances are permitted in
accordance with the listing and labeling of the range hoods or ovens with integral
exhaust. The clearances for a domestic open-top broiler unit shall be in
accordance with Section M1503.2.1.
Minimum Horizontal Clearance. The minimum horizontal
clearance from edge of the burner head(s) of top (or surface) cooking
unit to combustible walls extending above the cooking surface shall be
not less than 12 inches.
Exception: Walls of combustible materials to be installed within 12
inches of a cooking unit shall be provided with protection equivalent to
1/2-inch gypsum wallboard covered with laminated plastic. The height
of the laminated plastic shall be 12 inch minimum."
37
54) Chapter 20, "Boilers and Water Heaters," of the International Residential Code is
deleted in its entirety and replaced with provisions relating to water heaters in
the Plumbing code, Chapter 5F, Hawai`i County Code.
55) Chapter 21, "Hydronic Piping," of the International Residential Code is amended
by amending its title to read as follows:
CHAPTER 21
HYDRONIC PIPING
FOR REFERENCE ONLY)"
56) Chapter 21, "Hydronic Piping," of the International Residential Code is amended
by adding a section M2100, "Reference,"to read as follows:
Section M2100 Reference. The provisions of this chapter shall be deemed to
be guidelines only and not mandatory."
57) Chapter 22, "Special Piping and Storage Systems," of the International
Residential Code is amended by amending its title to read as follows:
CHAPTER 22
SPECIAL PIPING AND STORAGE SYSTEMS
FOR REFERENCE ONLY)"
58) Chapter 22, "Special Piping and Storage Systems," of the International
Residential Code is amended by adding a section M2200, "Reference," to read as
follows:
Section M2200 Reference. The provisions of this chapter shall be deemed to
be guidelines only and not mandatory."
59) Chapter 23, "Solar Thermal Energy Systems," of the International Residential
Code is deleted in its entirety. Refer to the Electrical Code, Chapter 5D, Hawai`i
County Code and the Plumbing Code, Chapter 5F, Hawai`i County Code.
60) Chapter 24, "Fuel Gas," of the International Residential Code is deleted in its
entirety. Refer to the Plumbing Code, Chapter 5F, Hawai`i County Code.
61) Chapters 25 through 32 that are contained in Part VII, "Plumbing," of the
International Residential Code are deleted in their entirety. Refer to the Plumbing
Code, Chapter 5F, Hawai`i County Code.
62) Chapter 33, "Storm Drainage," of the International Residential Code is deleted in
its entirety.
38
63) Chapters 34 thru 43 that are contained in Part VIII, "Electrical," of the
International Residential Code are deleted in their entirety. Refer to the Electrical
Code, Chapter 5D, Hawai`i County Code.
Article 3.Adoption,Amendment, and Addition of Appendices.
Division 1.Appendices of International Residential Code Adopted.
Section 5B-3-1. Appendices not applicable.
Provisions in the appendices of the International Residential Code shall not apply
unless specifically adopted.
Section 5B-3-2. Appendices of the International Residential Code adopted.
The following appendices of the International Residential Code are adopted by
reference and made a part of this code, subject to any amendments set forth in this article:
1) Appendix H, Patio Covers;
2) Appendix M, Home Day Care—R-3 Occupancy; and
3) Appendix Q, Tiny Houses.
Section 5B-3-3. Appendix Q; Tiny Houses.
Appendix Q is deleted in its entirety and replaced with the following:
APPENDIX Q
TINY HOUSES
SECTION AQ101
GENERAL
AQ101.1 Scope. This appendix shall be applicable to tiny houses
used as single dwelling units and tiny houses that contain a loft.
Tiny houses shall comply with the International Residential
Code except as otherwise stated in this appendix.
AQ101.1.1 Limitations. Tiny houses shall not contain more
than one loft, or loft space. Tiny houses that contain a loft may
not be used for any purpose other than as a detached single-
family dwelling.
SECTION AQ102
DEFINITIONS
AQ102.1 General. The following words and terms shall, for the
purposes of this appendix, have the meanings shown herein.
Refer to Chapter 2 of the International Residential Code for
general definitions.
39
EGRESS ROOF ACCESS WINDOW. A skylight or roof window
designed and installed to satisfy the emergency escape and
rescue opening requirements in Section R310.2.
LANDING PLATFORM. A landing measuring two treads deep
and two risers tall, provided as the top step of a stairway
accessing a loft.
LOFT. Any floor level located above the main floor and open to it
on at least one side, with a ceiling height less than 6 feet 8 inches
2032 mm), complying with the area, access, and guard
requirements of Section AQ105, and used as a living or sleeping
space.
TINY HOUSE. A dwelling which is 500 square feet (37m2) or
less in floor area excluding lofts. The maximum total floor area of
500 square feet shall mean the sum of the horizontal areas of
each floor of a building measured from the exterior faces of the
exterior walls. The total floor area shall include enclosed
attached accessory structures such as garages or storage areas.
Unenclosed attached structures such as carports, breezeways,
lanais, or porches shall be excluded.
SECTION AQ103
FOUNDATIONS
AQ103.1 General. All exterior walls shall be permanently
supported on continuous solid or fully grouted masonry or
concrete footings, crushed stone footings, wood foundations, or
other approved structural systems pursuant to Chapter 4 of the
International Residential Code, which shall be of sufficient
design to accommodate all loads according to Section R301 and to
transmit the resulting loads to the soil within the limitations as
determined from the character of the soil. Footings shall be
supported on undisturbed natural soils or engineered fill.
SECTION AQ104
CEILING HEIGHT
AQ104.1 Minimum ceiling height.Habitable space and
hallways in tiny houses shall have a ceiling height not less than 6
feet 8 inches (2032 mm). Bathrooms, toilet rooms, and kitchens
shall have a ceiling height not less than 6 feet 4 inches (1930
mm). No obstructions shall extend below these minimum ceiling
heights including beams, girders, ducts, lighting, or other
obstructions.
40
Exception: Ceiling heights in lofts are permitted to be less than
6 foot 8 inches (2032 mm).
SECTION AQ105
LOFTS
AQ105.1 Minimum loft areas.Lofts used as a sleeping or living •
space shall meet the minimum area and dimension requirements
of Sections AQ105.1.1 through AQ105.1.3.
AQ105.1.1 Minimum area.Lofts shall have a floor area of not
less than 35 square feet (3.25 m2).
AQ105.1.2 Minimum dimensions.Lofts shall be not less than
5 feet (1524 mm) in any horizontal dimension.
AQ105.1.3 Height effect on loft area. Portions of a loft with a
sloping ceiling measuring less than 3 feet (914 mm) from the
finished floor to the finished ceiling shall not be considered as
contributing to the minimum required area for the loft.
Exception: Under gable roofs with a minimum slope of 6:12,
portions of a loft with a sloping ceiling measuring less than 16
inches (406 mm) from the finished floor to the finished ceiling
shall not be considered as contributing to the minimum required
area for the loft.
AQ105.1.4 Minimum ceiling height. Lofts shall have a ceiling
height of not less than 3 feet (914.4 mm).
AQ105.1.4.4.1 Undersized lofts.Lofts having a ceiling height
of less than 6 feet (1828.8 mm) for more than 50 percent of the
required minimum area shall comply with both of the following:
1. All wall and ceiling of the dwelling unit shall be a
minimum 1/2 inch gypsum board or other approved Class
A finish, throughout the entire dwelling unit.
2. In addition to the loft smoke alarm required by AQ105.4,
all other required smoke alarms within the dwelling unit
shall be a photoelectric-type complying with R314.
AQ105.1.5 Maximum loft size. The aggregate floor area of a
loft shall not be greater than one-third of the floor area of the
room or space in which they are located.
AQ105.2 Loft access. The access to and primary egress from
lofts shall be of any type described in Sections AQ105.2.1
through AQ105.2.4. All methods of loft access and egress shall be
positively anchored to prevent displacement.
41
AQ105.2.1 Stairways. Stairways accessing lofts shall comply
with this code or with Sections AQ105.2.1.1 through
AQ105.2.1.5.
AQ105.2.1.1 Width. Stairways accessing a loft shall not be less
than 17 inches (432 mm) in clear width at all points at or above
the permitted handrail height. The minimum width below the
handrail shall not be less than 20 inches (508 mm).
AQ105.2.1.2 Headroom. The headroom in stairways accessing a
loft shall not be less than 6 feet 2 inches (1880 mm) measured
vertically from the sloped line connecting the tread nosing in the
middle of the tread width.
Exception: The headroom for landing platforms shall not be less
than 4 feet 6 inches (1372 mm).
AQ105.2.1.3 Treads and Risers. Risers for stairs accessing a
loft shall be a minimum of 7 inches (178 mm) and a maximum of
12 inches (305 mm). Tread depth and riser height shall be
calculated with the following formulas:
Tread depth = 20 inches (508 mm) minus 4/3 riser height
or
Riser height = 15 inches (381 mm) minus 3/4 tread depth
Exception: Landing platforms shall measure two treads deep
and two risers tall.
AQ105.2.1.4 Handrails. Handrails shall comply with Section
R311.7.8.
AQ105.2.1.5 Stairway guards. Guards at open sides of
stairways shall comply with Section R312.1.
AQ105.2.2 Ladders. Ladders accessing lofts shall comply with
Sections AQ105.2.2.1 and AQ105.2.2.2.
AQ1052.2.1 Size and capacity. Ladders accessing lofts shall
have 12 inches (305 mm) minimum rung width and 10 inches
254 mm) to 14 inch (356 mm) spacing between rungs. Ladders
shall be capable of supporting a 300 pound (136 kg) load on any
rung. Rung spacing shall be uniform within 3/8-inch (9.5 mm).
The maximum height of a ladder shall be 8 feet (2438 mm).
AQ1052.2.2 Incline. Ladders shall be installed at 70 to 80
degrees from horizontal.
42
AQ105.2.3 Alternating tread devices. Alternating tread
devices accessing lofts 200 square feet or less shall comply with
Sections R311.7.11.1 and R311.7.11.2. The clear width at and
below the handrails shall be not less than 20 inches (508 mm).
AQ105.2.4 Ships ladders. Ships ladders accessing lofts 200
square feet or less shall comply with Sections R311.7.12.1 and
R311.7.12.2. The clear width at and below the handrails shall be
not less than 20 inches (508 mm).
AQ105.3 Loft guards. Loft guards shall be located along the
open side(s) of lofts located more than 30 inches (762 mm) above
the main floor. Loft guards shall be not less than 36 inches (914
mm) in height or one-half the clear height to the ceiling,
whichever is less. Loft guards are not required at the loft
accessing means connection to the loft.
AQ105.4 Loft smoke alarms.Lofts shall be equipped with a
minimum of one photoelectric-type smoke alarm complying with
Section R314.
AQ105.5 Loft location. Lofts shall not be located directly above
a permanently installed cooking appliance. Permanently
installed cooking appliances shall not be located within 12 inches
304.8 mm) horizontally of a loft open edge, measured to the
vertical plane of the loft edge.
SECTION AQ106
EMERGENCY ESCAPE AND RESCUE OPENINGS
AQ106.1 General. Tiny houses shall meet the requirements of
Section R310 for emergency escape and rescue openings.
Exception:Egress roof access windows in lofts used as sleeping
rooms shall be deemed to meet the requirements of Section R310
where installed with the bottom of their clear opening no more
than 44 inches (1118 mm) above the loft floor provided the egress
roof access window complies with the minimum opening area
requirements of Section R310.2.1."
43
Division 2. Appendix Added to the International Residential Code.
Section 5B-3-21. Reserved.
Section 5B-3-22. Appendix U; Factory-built Housing.
Appendix U is added to this code, to read as follows:
APPENDIX U
FACTORY- WILT HOUSING
SECTION U101
APPLICABILITY
U101.1 Purpose. These provisions are applicable to the design,
construction, installation, and transportation of factory-built
housing within the County. Unless otherwise specified this article
shall be applicable only to factory-built housing which is sold or
offered for sale to first users as defined below.
Exception: Manufactured homes manufactured and certified in
accordance with the Manufactured Home Construction and Safety
Standards as promulgated by the United States Department of
Housing and Urban Development. Foundation, exterior stairs,
additions and accessory structures shall comply with Article 1,
Adoption of the International Building Code and International
Residential Code for One- and Two-Family Dwellings.
All provisions of the building, housing, electrical, and plumbing
codes shall be applicable unless indicated otherwise in this
article.
U101.2 Definitions. The following terms are defined for
specialized use within this article:
Building official" means the director of the department of public
works or the director's authorized representative.
Factory-built housing" means any structure or portion thereof
designed primarily for residential occupancy by human beings,
which is either entirely prefabricated or assembled at a place
other than the building site.
First user" means a person, firm or corporation who initially
installs factory-built housing within this State. A person who
subsequently purchases an installed factory-built housing is not a
first user within the meaning of this definition.
44
Insignia of approval"means a tag, tab, stamp, label or other
device issued by the building official to indicate compliance with
the statutes and these rules.
Installation" means the assembly of factory-built housing on site
and the process of affixing factory-built housing to land, a
foundation or an existing building.
Manufacture" means the process of making, fabricating,
constructing, forming, or assembling factory-built housing at a
place other than the building site.
Site" means the parcel of land on which factory-built housing is
installed.
U101.3 Building permit required.
a) No person shall perform any of the following work or cause
or permit the same to be done on any factory-built housing
in the County, without first obtaining a permit for this work
from the building official:
1) Manufacture, install, erect, construct, enlarge, alter,
repair, relocate, improve, remove, convert, or demolish
any factory-built housing;
2) Manufacture, erect, install, enlarge, alter, repair,
remove, convert,-or replace any electrical work; or
3) Manufacture, erect, install, enlarge, alter, repair,
remove, convert, or replace any plumbing, fire
sprinkler, gas, or drainage piping work, or any fixture,
gas appliance, water heating, or water treating
equipment.
b) To obtain a permit, an applicant shall comply with sections:
5-4-1; 5-4-2, 5-4-3, 5-4-4, 5-4-5, 5-4-6, 5-4-7, and 5-4-8.
U101.4 Building permit fee. A fee for each building permit as
set forth in section 5-7-3 of chapter 5, shall be paid to the building
official.
U101.5 Insignia of approval.
a) Factory-built housing manufactured in this County which is
sold or offered for sale to first users within this County shall
bear the insignia of approval issued by the building official
indicating that the factory-built housing is in compliance
with this article.
b) Factory-built housing manufactured outside the County
shall bear the insignia of approval issued by any
governmental or inspectional agency approved by the
building official.
45
U101.6 Performance of building, electrical, and plumbing
work.
a) All building, electrical, and plumbing work performed
within the State of Hawai`i shall comply with State of
Hawai`i contracting and licensing laws and regulations.
b) All building, electrical, and plumbing work to be performed
at the factory outside of this state must be accomplished:
1) Under the supervision of a licensed building contractor,
licensed supervising electrician, or master plumber,
respectively, of the state in which the factory is located,
if the manufacturer submits a quality control manual
which is approved by the building official; or
2) By licensed building contractors, electricians, or
plumbers, respectively, of the state in which the factory
is located.
U101.7 Inspections.
a) Each and every factory-built housing manufactured outside
of this County shall be inspected by a governmental or
inspectional agency approved by the building official in
conformance with the quality assurance standards approved
by the building official and in compliance with County of
Hawai`i codes and regulations.
b) All manufacturing work, including building, electrical, and
plumbing, shall be inspected in the factory by the building
official to ensure compliance with the requirements of the
construction code. It shall be the duty of the permit holder
or their agent, to cause the work to remain accessible and
exposed for inspection purposes. All inspections of factory-
built housing shall comply with sections 5-8-1, 5-8-2, 5-8-3,
5-8-4, 5-8-5, 5-8-6, and 5-8-7.
U101.8 Manufacturer's label.
a) Each and every factory-built housing manufactured outside
of this County shall have a manufacturer's label on a metal
plate showing the manufacturer's name, serial number of
the building, manufacture date, design load criteria, and an
inspection stamp by a governmental or inspectional agency
approved by the building official securely fastened on the
factory-built housing
b) Each and every factory-built housing manufactured in the
County of Hawai`i shall have a manufacturer's label on a
metal plate showing the manufacturer's name, serial
46
number of the building, manufacture date, design load
criteria, and building official inspection stamp securely
fastened on the factory-built housing.
U101.9 Transporting factory-built housing. The
transportation of factory-built housing shall be governed by the
provisions of the County and State traffic codes."
Article 4. Building Work Within Special Flood Hazard Areas.
Section 5B-4-1. General applicability.
a) The provisions of this article shall apply to new construction or the renovation and
major alteration, addition, or reinstallation of any existing buildings or structures,
within a special flood hazard area as identified by chapter 27, Hawai`i County Code.
Such construction work shall comply with chapter 16 of the International Building
Code, and chapter 27, Floodplain Management.
b) The provisions of this article shall not apply to the following:
1) Any building or structure exempted from chapter 27
2) Any building or structure which has been granted a flood control variance
pursuant to article 5, chapter 27; or
3) Any building or structure lawfully existing prior to November 8, 1993, subject to
the provisions of chapter 27.
Section 5B-4-2. Definitions.
As used in this article, unless it is apparent from the context that a different meaning
is intended:
Base flood elevation" means the water surface elevation of the base flood.
Flood or flooding" means:
1) A general and temporary condition of partial or complete inundation of normally
dry land areas from:
A) The overflow of inland or tidal waters;
B) The unusual and rapid accumulation or runoff of surface waters from any
source; or
C) Mudslides (i.e., mudflows)which are approximately caused by flooding as
defined in paragraph (1)(B) of this definition and are akin to a river of liquid
and flowing mud on the surfaces of normally dry land areas, as when earth is
carried by a current of water and deposited along the path of the current; or
2) The collapse or subsidence of land along the shore of a lake or other body of water
as a result of erosion or undermining caused by waves or currents of water
exceeding anticipated cyclical levels or suddenly caused by an unusually high
water level in a natural body of water, accompanied by a severe storm, or by an
unanticipated force of nature, such as flash flood or an abnormal tidal surge, or by
some similarly unusual and unforeseeable event which results in flooding as
defined in paragraph (1)(A) of this definition.
47
Special flood hazard area" means an area having special flood or flood-related erosion
hazards, and shown on the Flood Insurance Rate Maps as Zones A, AO, AE, A99, AH, VE,
or V.
Water-tight"when referring to construction below the inundation level, means
constructed to exclude moisture and withstand the hydraulic pressure resulting from the
anticipated depth of inundation.
Section 5B-4-3. General Requirements.
Contractor will provide a certified flood zone elevation mark on jobsite for flood zone
elevation reference point."
48
PART II. CHAPTER 5C, EXISTING BUILDING CODE
SECTION 2. The Hawai`i County Code 1983 (2016 Edition, as amended), is amended
by adding a new chapter, establishing an existing building code, to be designated chapter
5C, and to read as follows:
CHAPTER 5C
EXISTING BUILDING CODE
Article 1. General Provisions.
Section 5C-1-1. Title.
This chapter shall be known as the "existing building code."
Section 5C-1-2. Purpose.
The purpose of this chapter is to provide minimum standards to safeguard life or limb,
health, property and public welfare by regulating and controlling the design, construction,
quality of materials, use and occupancy, location and maintenance of existing buildings and
structures within the County and certain equipment specifically regulated herein.
Section 5C-1-3. Scope; exceptions.
This chapter shall apply to the design, construction, alteration, movement,
enlargement, replacement, repair, equipment, use and occupancy, location, removal and
demolition of existing buildings or structures or any appurtenances connected or attached
to buildings or structures.
Exception:
Detached one- and two-family dwellings and multiple single-family dwellings (townhomes)
not more than three stories above grade plane in height with a separate means of egress,
and their accessory structures not more than three stories above grade plane in height,
shall comply with this chapter or chapter 5B, the residential building code.
Section 5C-1-4. Administrative provisions.
Provisions relating to permitting, enforcement, inspection, and other administrative
procedures pertaining to this chapter are contained in chapter 5;the construction
administrative code.
Section 5C-1-5. Existing buildings.
a) Permitted buildings in existence at the time of the adoption of this chapter may have
their existing permitted use or occupancy continued if such use or occupancy was legal
at the time of the adoption of this chapter, provided such continued use does not
constitute a hazard to the general safety and welfare of the occupants and the public.
b) Alteration, repair, addition, and change of occupancy. Alteration, repair, addition, and
change of occupancy to a building or structure in existence at the time of the adoption
of this chapter shall comply with the requirements of this chapter.
49
Section 5C-1-6. Definitions.
As used in this chapter, unless it is apparent from the context that a different meaning
is intended:
Accessory structure" means a structure not greater than 3,000 square feet (279 m2) in
floor area, and not over two stories in height, the use of which is customarily accessory to
and incidental to that of the dwelling and which is located on the same lot.
Authority having jurisdiction" means the director of the department of public works,
or the director's authorized representative.
Building" means any structure used or intended for supporting or sheltering any use
or occupancy. The term shall include but not be limited to, any structure mounted on
wheels such as a trailer, wagon, or vehicle which is parked and stationary for any 24-hour
period, and is used for business or living purposes; provided, however, that the term shall
not include a push cart or push wagon which is readily movable and which does not exceed
25 square feet in area, nor shall the term include a trailer or vehicle, used exclusively for
the purpose of selling any commercial product therefrom, which hold a vehicle license and
actually travels on public or private streets.
To the extent context otherwise permits and/or requires, the definitions of"building" as
used in chapters: 5A, the building code; 5B, the residential building code; 5C, the existing
building code; 5D, the electrical code; 5E, the energy conservation code; and 5F, the
plumbing code; are incorporated by reference herein.
Building work" means the design, construction, alteration, relocation, enlargement,
replacement, repair, removal, demolition of any building or structure, or any other
activities regulated by this structure.
Chapter" means this chapter.
This code" means the existing building code, contained in chapter 5C, or the
construction administrative code, contained in chapter 5, or both, as the context requires.
Construction code" means collectively: chapter 5, the construction administrative code;
chapter 5A, the building code; chapter 5B, the residential building code; chapter 5C, the
existing building code; chapter 5D, the electrical code; chapter 5E, the energy conservation
code; chapter 5F, the plumbing code; and all administrative rules adopted pursuant to these
chapters.
Dwelling" means any building that contains one or two dwelling units used, intended,
or designed to be built, used, rented, leased, let or hired out to be occupied, or that are
occupied for living purposes.
Existing building" means a building erected prior to the effective date of this chapter,
or one for which a legal permit has been issued.
Existing structure" means a structure erected prior to the effective date of this
chapter, or one for which a legal permit has been issued.
50
ICC" means the International Code Council.
Owner-builder"means owners or lessees of property who build or improve buildings or
structures on their property for their own use, or for use by their immediate family. This
definition shall not preempt owner-builder by exemption as defined by section 444-2.5,
Hawai`i Revised Statutes.
Permit" means a formal authorization issued by the authority having jurisdiction that
authorizes performance of specified work, pursuant to the construction code, including the
following chapters and all administrative rules adopted pursuant to the following chapters:
1) 5, the construction administrative code;
2) 5A, the building code;
3) 5B, the residential building code;
4) 5C, the existing building code;
5) 5D, the electrical code;
6) 5E, the energy conservation code; and
7) 5F, the plumbing code.
Person" means any individual, firm, partnership, association, or corporation; or its or
their successors or assigns, according to the context thereof.
required.5C-1-7. Complianceqeuired.
a) No person shall perform or cause to be performed any building work which does not
comply with the provisions of this code or any permit issued pursuant to this code.
b) No person shall perform any work covered by this code in violation of the provisions of
chapters 444 or 448E, Hawaii Revised Statutes.
c) Any approval or permit issued pursuant to the provisions of this code shall comply with
all applicable requirements of this code.
d) The granting of a permit, variance, or approval of plans or specifications pursuant to
this code does not dispense with the necessity to comply with any applicable law to
which a permit holder may also be subject.
Section 5C-1-8. Conflict.
a) If any provisions of this code conflict with or contravene provisions of the Hawai`i State
Building Code or the International Building Code, 2018 Edition, that have been
incorporated by reference, the provisions of this code shall prevail as to all matters and
questions arising out of the subject matter of such provisions.
b) In situations where two or more provisions of this code and any applicable law, other
than those provided for in subsection (a), cover the same subject matter, the stricter
shall be complied with.
Section 5C-1-9. References to model codes.
a) The codes and standards referenced in this code shall be considered to be part of the
requirements of this code to the prescribed extent of each such reference and as further
regulated in section 5C-1-8.
51
b) Wherever a model code is referenced in this code, the following shall apply:
1) The International Building Code shall mean the building code, chapter 5A,
Hawai`i County Code;
2) The International Residential Code, shall mean the residential building code,
chapter 5B, Hawai`i County Code;
3) The International Existing Building Code, shall mean the existing building code,
chapter 5C, Hawai`i County Code;
4) The International Electrical Code shall mean the electrical code, chapter 5D,
Hawai`i County Code;
5) The International Energy Conservation Code, shall mean the energy conservation
code, chapter 5E, Hawai`i County Code;
6) The International Plumbing Code shall mean the plumbing code, chapter 5F,
Hawai`i County Code;
7) The International Fuel Gas Code, the provisions of the International Fuel Gas
Code shall be deemed to be only guidelines and not mandatory;
8) The International Mechanical Code, the provisions of the International
Mechanical Code shall be deemed to be only guidelines and not mandatory;
9) The International Property Maintenance Code, the provisions of the International
Property Maintenance Code shall be deemed to be only guidelines and not
mandatory; and
10) The International Fire Code shall mean the fire code, chapter 26, Hawai`i County
Code.
Exception: Where enforcement of a code provision would violate the conditions of the
listing of the equipment of appliance, the condition of the listing shall govern.
Article 2. Installation Requirements.
Section 5C-2-1. International existing building code adopted.
a) The "International Existing Building Code, 2018 Edition," as published by the
International Code Council, Incorporated, 4051 Flossmoor Road, Country Club Hills, IL
60478, is adopted by reference and made a part of this code, subject to any
amendments set forth in this chapter. Hereinafter, the "International Existing
Building Code, 2018 Edition," shall be referred to as the "International Existing
Building Code." The appendices of the International Existing Building Code are not
adopted unless otherwise provided in this chapter.
b) The scope, technical specifications, and exemptions set forth in the International
Existing Building Code are hereby adopted as the standard for building work covered
by this code, provided there are no specific provisions in any other section of this code
covering the particular matter.
c) A copy of the International Existing Building Code shall be available for public
inspection at the Hilo and Kailua-Kona offices of the department of public works and at
the office of the County clerk.
52
d) The International Existing Building Code adopted and incorporated by reference into
this code, shall be subject to the amendments hereinafter set forth.
1) Chapter 1, Part 1 - "Scope and Administration," of the International Existing
Building Code is deleted in its entirety.
2) Chapter 1, Part 2—"Administration and Enforcement" of the International
Existing Building Code is deleted in its entirety.
3) Section 202, "Definitions," of the International Existing Building Code is amended
by adding the following definition:
FAMILY shall be as defined in the Zoning Code except that a
nursing, care home, or other similar facility with not more than
five patients may be considered a family under this code."
4) Section 202, "GENERAL DEFINITIONS," of the International Existing Building
Code is amended by amending the following definitions to read as follows:
BUILDING. Any structure [utilized] used or intended for
supporting or sheltering any use or occupancy. The term shall
include but not be limited to any structure mounted on wheels
such as a trailer, wagon or vehicle which is parked and stationary
for any 24-hour period, and is used for business or living
purposes: provided, however, that the term shall not include a
push cart or push wagon which is readily movable and which does
not exceed 25 square feet in area, nor shall the term include a
trailer or vehicle, used exclusively for the purpose of selling any
commercial product therefrom, which hold a vehicle license and
actually travels on public or private streets."
CODE OFFICIAL. [The officer or other deGignated authority
charged with the adminiotration and enforcement of this code.]
The director of the County department of public works, or the
director's authorized representative."
5) Subsection 301.5, "Compliance with accessibility," of the International Existing
Building Code is amended to read as follows:
301.5 Compliance with accessibility. Accessibility requirements for existing
buildings shall comply with the [2009 edition of ICC A117.1.] following:
1. Construction of State or County buildings or facilities shall comply with
Section 103-50 Hawai`i Revised Statutes.
2. Americans with Disabilities Act Standards for Accessible Design.
3. Housing and urban development recognized"safe harbors" for compliance
with the Fair Housing Acts design and construction requirements.
4. Pertinent laws relating with disabilities shall be administered and enforced
by agencies responsible for their enforcement.
53
Prior to the issuance of a building permit, the owner (or the owner's
representative, professional architect, or engineer) shall submit a statement that
all requirements, relating to accessibility for persons with disabilities, shall be
complied with."
6) Section 303.3, "Seismic evaluation and design procedures,"is amended by adding
a new subsection 303.3.3, "Pre-engineered bracing of post and pier foundations" to
read as follows:
303.3.3 Pre-engineered bracing of post and pier foundations. For
conventional light-framed single family residences two stories or less above
grade, seismic bracing retrofits of elevated wood post and pier foundation
systems shall be permitted to be pre-engineered designs for braces or shear walls
constructed in accordance with FEMA Hazard Mitigation Grant Program DR-
1664-HI drawings, "Structural Seismic Retrofits for Hawaii Single Family
Residences with Post and Pier Foundations, May 2009."
7) Section 405.2, "Repairs to damaged buildings" of the International Existing
Building Code, is amended by adding subsections 405.2.1.2, "Walls Without
Studs" and 405.2.1.3, "Boards for Single-Wall Construction"to read as follows:
Section 405.2.1.2 Walls without studs.
405.2.1.2.1 General. For Type V-B buildings, single-wall construction without
studs may be used in accordance with this section for repairs to existing
buildings of single-wall construction only.
One-story and the uppermost story of wood frame Type V-B buildings may be of
single-wall construction with board thickness specified in this section, without
studs,when requirements of this section are met. Floor to ceiling height must
not exceed 8 feet (2,438 mm).
Any provision of this code to the contrary notwithstanding, studding of not less
than 2-inches by 3-inches (51 mm by 76.2 mm) may be used on one-story
buildings of double-wall construction.
When wood-frame dwellings are supported by posts, 2-inch by 4-inch (51mm by
102 mm) foundation bracing must be provided.
For one-story conventional residential structures, the local practice of using
foundation blocks with termite shields is acceptable in all areas except in flood
hazard areas and for developments adjacent to drainage facilities as specified in
chapter 27, Hawaii County Code.
405.2.1.3 Boards for single-wall construction.
405.2.1.3.1 One and one-eighth inch boards. Single-wall construction with
boards of 1-1/8 inch (28.6 mm) net thickness are not required to have girts.
54
405.2.1.3.2 One-inch boards. Where single-wall construction is with boards of
one-inch thickness (25.4 mm), no girt is required, provided approved stiffeners
for any section of such wall are spaced not more than
10 feet (3048 mm) along the wall.
405.2.1.3.3 Three-fourths-inch boards. Single-wall construction with boards
of 3/4-inch (19.1 mm) net thickness must have girts and cross partitions at least
every 30 feet (9144 mm).
405.2.1.3.4 Approved stiffeners. Approved stiffeners must be studs at least 2-
inches by 4-inches (51 mm by 102 mm), full height window or door jambs, posts,
walls or partitions at right angles to the section of wall under construction.
405.2.1.3.5 Girts. Girts for single-wall construction must be not less than 2-
inches by 6-inches (51 mm by 152 mm) belt course or other approved
strengthening about mid height between the floor and ceiling on all exterior
walls.
405.2.1.3.6 Complete load path. Blocking, bridging, straps, approved framing
anchors or mechanical fasteners must be designed and installed to provide
continuous ties from the roof to the foundation system. Sheet
metal clamps, ties or clips, must be formed of ASTM A153 G90 galvanized steel
or other approved corrosion-resistant material of not less than 0.040-inch (1.01
mm) nominal thickness. Uplift resistance must be in accordance with Table
R802.11."
8) Subsection 506.4.2, "Snow and wind loads," of the International Existing Building
Code is amended to read as follows:
506.4.2 Snow and wind loads. Where a change of occupancy results in a
structure being assigned to a higher risk category, or where the change is from a
Group S or Group U occupancy to any occupancy other than Group S or Group U,
the structure shall satisfy the requirements of Sections 1608 and 1609 of[the
International Building Code] the Building Code, Chapter 5A, for the new risk
category.
Exception]Exceptions:
1. Where the area of the new occupancy is less than 10 percent of the building
area, compliance with this section is not required. The cumulative effect of
occupancy changes over time shall be considered.
2. Where the change is from a Group S or Group U occupancy, use of 75% of
snow and wind forces shall be permitted."
9) Subsection 506.4.3, "Seismic loads," of the International Existing Building Code is
amended to read as follows:
506.4.3 Seismic loads (seismic force-resisting system). Where a change of
occupancy results in a building being assigned to a higher risk category, or where
55
the change is from a Group S or Group U occupancy to any occupancy other than
Group S or Group U, the building shall satisfy the requirements of Section 1613
of[the International Building Code] the Building Code, Chapter 5A, for the new
risk category using full seismic forces.
Exceptions:
1. Where the area of the new occupancy is less than 10 percent of the building
area, and the new occupancy is not assigned to Risk Category IV, compliance
with this section is not required. The cumulative effect of occupancy changes
over time shall be considered.
2. Where a change of use results in a building being reclassified from Risk
Category I or II to Risk Category III and the seismic coefficient, SDS, is less
than 0.33, compliance with this section is not required.
3. Unreinforced masonry bearing wall buildings assigned to Risk Category III
and to Seismic Design Category A or B, shall be permitted to use Appendix
Chapter Al of this code.
4. Where the change is from a Group S or Group U occupancy, use of reduced
seismic forces shall be permitted."
10) Subsection 706.2, "Addition or replacement of roofing or replacement of
equipment," of the International Existing Building Code is amended to read as
follows:
706.2 Addition or replacement of roofing or replacement of equipment.
Any existing gravity load-carrying structural element for which an alteration
causes an increase in design dead, live or snow load, including snow drift effects,
of more than 5 percent shall be replaced or altered as needed to carry the gravity
loads required by [the International Building Code] the Building Code, Chapter
5A for new structures.
Exceptions:
1. Buildings of Group R occupancy with not more than five dwelling or sleeping
units used solely for residential purposes where the altered building complies
with the conventional light-frame construction methods of[the International
Building Code] the Building Code, Chapter 5A, or the provisions of[the
International Residential Building Code] the Residential Building Code,
Chapter 5B.
2. Buildings in which the increased dead load is due entirely to the addition of a
second layer of roof covering or addition of insulation,weighing 3 pounds per
square foot (0.1437 kN/m2) or less over an existing single layer of roof
covering."
11) Subsection 706.3.2, "Roof diaphragms resisting wind loads in high-wind regions,"
of the International Existing Building Code is amended to read as follows:
706.3.2 Roof diaphragms resisting wind loads in high-wind regions.
Where roofing materials are removed from more than 50 percent of the roof
diaphragm or section of a building located where the [ultimate design wind
56
speed, Vult] basic wind speed, V, determined in accordance with Figure 1609.3(1)
of[the International Building Code] the Building Code, Chapter 5A, is greater
than 115 mph (51 m/s) or in a special wind region, as defined in Section 1609 of
the International Building Code] the Building Code, Chapter 5A, roof
diaphragms, connections of the roof diaphragm to the roof framing members, and
roof-to-wall connections shall be evaluated for the wind loads specified in [the
International Building Code] the Building Code, Chapter 5A, including wind
uplift. If the diaphragms and connections in their current condition are not
capable of resisting 75 percent of those wind loads, they shall be replaced or
strengthened in accordance with at least 75 percent of the loads specified in [the
International Building Code] the Building Code, Chapter 5A."
12) Subsection 1006.2, "Snow and wind loads" of the International Existing Building
Code is amended to read as follows:
1006.2 Snow and wind loads. Where a change of occupancy results in a
structure being assigned to a higher risk category or where the change is from a
Group S or Group U occupancy to any occupancy other than Group S or Group U,
the structure shall satisfy the requirements of Sections 1608 and 1609 of[the
International Building Code] the Building Code, Chapter 5A, for the new risk
category.
Exeeptiei]Exceptions:
1. Where the area of the new occupancy is less than 10 percent of the building
area[. The], the cumulative effect of occupancy changes over time shall be
considered.
2. Where the change is from a Group S or Group U occupancy, use of 75% of
snow and wind forces shall be permitted."
13) Subsection 1006.3, "Seismic loads" of the International Existing Building Code is
amended to read as follows:
1006.3 Seismic loads. Where a change of occupancy results in a building being
assigned to a higher risk category or where the change is from a Group S or
Group U occupancy to any occupancy other than Group S or Group U, the
building shall satisfy the requirements of Section 1613 of[the International
Building Code] the Building Code, Chapter 5A, for the new risk category using
full seismic forces.
Exceptions:
1. Where a change of use results in a building being reclassified from Risk
Category I or II to Risk Category III and the seismic coefficient, SDS, is less
than 0.33.
2. Where the area of the new occupancy is less than 10 percent of the building
area and the new occupancy is not assigned to Risk Category IV. The
cumulative effect of occupancy changes over time shall be considered.
57
3. Unreinforced masonry bearing wall buildings assigned to Risk Category III
and to Seismic Design Category A or B shall be permitted to use Appendix
Chapter Al of this code.
4. Where the change is from a Group S or Group U occupancy, use of reduced
seismic forces shall be permitted."
Article 3. Reserved
Article 4. Building Work Within Special Flood Hazard Areas.
Section 5C-4-1. General applicability.
a) The provisions of this article shall apply to new construction or the renovation and
major alteration, addition, or reinstallation of any existing buildings or structures,
within a special flood hazard area as identified by chapter 27, Hawai`i County Code.
Such construction work shall comply with chapter 16 of the International Building
Code, and chapter 27, Floodplain Management.
b) The provisions of this article shall not apply to the following:
1) Any building or structure exempted from chapter 27;
2) Any building or structure which has been granted a flood control variance
pursuant to article 5, chapter 27; or
3) Any building or structure lawfully existing prior to November 8, 1993, subject to
the provisions of chapter 27.
Section 5C-4-2. Definitions.
As used in this article, unless it is apparent from the context that a different meaning
is intended:
Base flood elevation" means the water surface elevation of the base flood.
Flood or flooding" means:
1) A general and temporary condition of partial or complete inundation of normally
dry land areas from:
A) The overflow of inland or tidal waters;
B) The unusual and rapid accumulation or runoff of surface waters from any
source; or
C) Mudslides (i.e., mudflows) which are approximately caused by flooding as
defined in paragraph (1)(B) of this definition and are akin to a river of
liquid and flowing mud on the surfaces of normally dry land areas, as when
earth is carried by a current of water and deposited along the path of the
current; or
2) The collapse or subsidence of land along the shore of a lake or other body ofwater
as a result of erosion or undermining caused by waves or currents of water
exceeding anticipated cyclical levels or suddenly caused by an unusually high
water level in a natural body of water, accompanied by a severe storm, or by an
unanticipated force of nature, such as flash flood or an abnormal tidal surge, or by
58
some similarly unusual and unforeseeable event which results in flooding as
defined in paragraph (1)(A) of this definition.
Special flood hazard area" means an area having special flood or flood-related erosion
hazards, and shown on the Flood Insurance Rate Maps as Zones A, AO, AE, A99, All, VE,
or V.
Water-tight"when referring to construction below the inundation level, means
constructed to exclude moisture and withstand the hydraulic pressure resulting from the
anticipated depth of inundation.
i n 5C-4-3. General Requirements.uirements.o q
Contractor will provide a certified flood zone elevation mark on jobsite for flood zone
elevation reference point."
59
PART III. AMENDMENTS TO OTHER ORDINANCES
SECTION 3. Chapter 5, article 1, section 5-1-2, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended to read as follows:
Section 5-1-2. Purpose.
This chapter consolidates the administrative provisions relating to the County's
construction code, including chapters: 5A, the building code; 5B, the residential building
code; 5C, the existing building codei 5D, the electrical code; 5E, the energy conservation
code; and 5F, the plumbing code into one chapter. These administrative provisions relate
to: permitting; enforcement; inspections; and related procedures. This consolidation will
enable the County to develop a system based on a single permit, rather than multiple
construction permits and generally promote consistency in procedures across construction
disciplines. The purpose of these policy changes is to enable the County to implement its
responsibilities in this area with greater efficiency and effectiveness."
SECTION 4. Chapter 5, article 1, section 5-1-3, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended to read as follows:
Section 5-1-3. Scope; exceptions.
The provisions of this chapter shall apply to the administrative, permitting,
enforcement, inspection, and related procedures of chapters: 5A, the building code; 5B, the
residential building code; 5C, the existing building code; 5D, the electrical code; 5E, the
energy conservation code; and 5F, the plumbing code.
This chapter shall apply to all building, electrical, and plumbing work related to the
construction, alteration, movement, addition, replacement, repair, establishment of and
changes in use and occupancy, location, maintenance, removal and demolition of every
building or structure or any appurtenances connected or attached to such buildings or
structures within the County inland of the shoreline high-water line.
This chapter shall not apply to:
1) Work on buildings or premises owned by or under the direct control of the Federal
government;
2) Work in public State or County road right-of-ways for utility installations, street
lighting, traffic signals, police and fire alarms, bridges, poles, hydraulic flood
control structures, and mechanical equipment not specifically regulated in this
code where installed:
A) Outside the proposed premises or boundary lines in a subdivision under
development; or
B) In an approved subdivision, where the work is in planned or actual roadways
or other common infrastructure areas;
3) Pursuant to section 448E-13, Hawaii Revised Statutes, work by employees of a
public utility within the State under a franchise or charter granted by the State
which is regulated by the public utilities commission and community antennae
television company, while so employed;
60
4) Electrical work related to work regulated by chapter 397, Hawaii Revised
Statutes, relating to the elevator code, but not including electrical work for the
supply of power to the control panels of elevators, dumbwaiters, escalators,
moving walks, and manlifts;
5) Replacement or repair of electrical devices and apparatus for air conditioning,
refrigeration, and heating systems, except electrical work on overcurrent devices
that are not physically attached to, or physically mounted on, such systems;
6) The construction, alteration or repair of electrical devices commonly used in the
home such as portable appliances as defined in section 5-1-5;
7) Plumbing work related to work regulated by chapter 397, Hawai`i Revised
Statutes, relating to boilers and pressure vessels; and
8) Agricultural buildings, structures, and appurtenances without electrical power
and plumbing systems are exempt from permit and construction code
requirements pursuant to section 46-88, Hawai`i Revised Statutes, except as
otherwise provided for in this construction code. No electrical power and no
plumbing systems shall be connected to a building or structure without first
obtaining a permit for electrical or plumbing work."
SECTION 5. Chapter 5, article 1, section 5-1-5, of the Hawaii County Code 1983
2016 Edition, as amended), is amended by amending the definition of"building"to read as
follows:
Building" means any structure used or intended for supporting or sheltering any use
or occupancy. The term shall include but not be limited to, any structure mounted on
wheels such as a trailer, wagon,or vehicle which is parked and stationary for any 24-hour
period, and is used for business or living purposes; provided, however, that the term shall
not include a push cart or push wagon which is readily movable and which does not exceed
25 square feet in area, nor shall the term include a trailer or vehicle, used exclusively for
the purpose of selling any commercial product therefrom, which hold a vehicle license and
actually travels on public or private streets.
To the extent context otherwise permits and/or requires, the definitions of"building" as
used in chapters: 5A, the building code; 5B, the residential building code; 5C, the existing
building code; 5D, the electrical code; 5E, the energy conservation code; and 5F, the
plumbing code; are incorporated by reference herein."
SECTION 6. Chapter 5, article 1, section 5-1-5, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending the definition of"construction code"
to read as follows:
Construction code" means collectively: chapter 5, the construction administrative
code; chapter 5A, the building code; chapter 5B, the residential building code; chapter 5C,
the existing building code; chapter 5D, the electrical code; chapter 5E, the energy
61
conservation code; chapter 5F, the plumbing code; and all administrative rules adopted
pursuant to these chapters."
SECTION 7. Chapter 5, article 1, section 5-1-5, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending the definition of"permit" to read as
follows:
Permit"means a formal authorization issued by the authority having jurisdiction
that authorizes performance of specified work, pursuant to the construction code, including
the following chapters and all administrative rules adopted pursuant to [these] the
following chapters:
1) 5, the construction administrative code;
2) 5A, the building code;
3) 5B, the residential building code;
4) 5C, the existing building code;
3)](5) 5D, the electrical code;
R-441(6) 5E, the energy conservation code; and
5)](7) 5F, the plumbing code."
SECTION 8. Chapter 5, article 2, section 5-2-2, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended to read as follows:
Section 5-2-2. Duties of the authority having jurisdiction.
The authority having jurisdiction shall administer the provisions of the construction
code and amendments thereto and shall perform the following duties:
1) Administer and enforce the provisions of the construction code, including
chapters: 5, the construction administrative code; 5A, the building code; 5B, the
residential building code; 5C, the existing building code; 5D, the electrical code;
5E, the energy conservation code; and 5F, the plumbing code; in a manner
consistent with the intent thereof;
2) Render interpretations of the construction code and adopt policies and procedures
that are consistent with the intent and purpose of this code. Such policies and
procedures shall not have the effect of waiving requirements specifically provided
for in the construction code;
3) Require submission of, examine, and check plans and specifications, drawings,
descriptions and diagrams necessary to show clearly the character, kind, and
extent of work covered by applications for a permit, and upon approval, shall issue
the permit applied for;
4) Inspect all building, electrical, and plumbing work authorized by permit to assure
compliance with provisions of the construction code or amendments thereto,
approving or condemning said work in whole or in part as conditions require;
5) Condemn and reject all work done or being done or materials used or being used
which do not in all respects comply with the provisions of the construction code
and amendments thereto;
6) Order changes in workmanship and materials essential to obtain compliance with
all provisions of the construction code;
62
7) Issue upon request a certificate of occupancy or certificate of completion for any
work approved by the authority having jurisdiction;
8) Investigate any construction or work regulated by the construction code and issue
such notices and orders as provided in the construction code;
9) Keep a complete record of all essential transactions; and
10) Maintain public office hours necessary to administer the provisions of the
construction code and amendments thereto."
SECTION 9. Chapter 5, article 2, section 5-2-3, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending subsection (a) to read as follows:
a) Permit holders and their agents shall comply with the requirements of permits issued
pursuant to the construction code including chapters: 5, the construction
administrative code; 5A, the building code; 5B, the residential building code; 5C, the
existing building code; 5D, the electrical code; 5E, the energy conservation code; and
5F, the plumbing code."
SECTION 10. Chapter 5, article 2, section 5-2-4, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending subsection (a) to read as follows:
a) If any provisions of the construction code conflict with or contravene provisions of the
Hawai`i State Building Codes, International Building Code, International Residential
Code, International Existing Building Code, National Electrical Code, Uniform
Plumbing Code, or the International Energy Conservation Code, that have been
incorporated by reference, the provisions of the construction code shall prevail as to all
matters and questions arising out of the subject matter of that provision."
SECTION 11. Chapter 5, article 4, section 5-4-21, of the Hawaii County Code 1983
2016 Edition, as amended), is amended by amending subsection (c) to read as follows:
c) Application for model plan pre-approval.
1) To apply for pre-approval of a model plan, three sets of complete working
drawings and specifications that bear the wet seal and signature of a person who
is licensed in the State of Hawai`i as an architect or professional structural
engineer shall be submitted to the authority having jurisdiction.
2) Factory-built homes shall include a manufacturer's [seal] label as required by
Appendix [E]U of chapter [5A, the building code] 5B, the residential building code.
3) A plan review fee for pre-approved model plans shall be assessed per model home
design in accordance with section 5-7-2."
SECTION 12. Chapter 5, article 8, section 5-8-4, of the Hawaii County Code 1983
2016 Edition, as amended), is amended by amending subsection (b) to read as follows:
b) Building work for which a permit is required, shall be inspected by the authority
having jurisdiction to ensure compliance with the requirements of this chapter and
63
specifically[;]_ chapter 5A, the building code; chapter 5B, the residential building code;
and chapter 5C, the existing building code. Inspections shall be conducted in
accordance with the following:
1) During inspections the contractor shall be present on the job site upon request of
the authority having jurisdiction.
2) Footing and foundation inspections shall be made after excavations for footings
are complete and any required reinforcing steel is in place. For concrete
foundations, any required forms shall be in place prior to inspection. Materials for
the foundation shall be on the job, except where concrete is ready mixed in
accordance with ASTM C 94, the concrete need not be on the job.
3) Concrete slab and under-floor inspections shall be made after in-slab or under-
floor reinforcing steel and building service equipment, conduit, termite spray,
vapor barriers, piping accessories and other ancillary equipment items are in
place, but before any concrete is placed or floor sheathing installed, including the
subfloor.
4) Framing inspections shall be made after the roof deck or sheathing, all framing,
fireblocking and bracing are in place and pipes, chimneys and vents to be
concealed are complete and the rough electrical, plumbing, heating wires, pipes
and ducts are approved.
5) Insulation inspections as required shall be made after the framing inspection and
before the lathing inspection.
6) Lathing inspections shall be made after all lathing and gypsum board, interior
and exterior, and which are required to be fire-resistive are in place but before any
plastering is applied or before gypsum board joints and fasteners are taped and
finished.
Exception:
Lath and gypsum board installed in Group R, Division 3 and Group U
Occupancies."
SECTION 13. Chapter 5, article 10, section 5-10-1, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended to read as follows:
Section 5-10-1. Violations.
It shall constitute a violation of the construction code for any person to cause or
authorize the following to be done:
1) Violate any provision of the construction code or permit or variance issued
pursuant to the construction code;
2) Erect, construct,enlarge, alter, repair, relocate, improve, remove, convert or
demolish, equip, use, occupy, or maintain any building or structure, or cause or
authorize the same to be done in violation of the construction code, including but
not limited to: chapter 5A, the building code; chapter 5B, the residential building
code; and chapter 5C, the existing building code;
3) Perform any electrical work or authorize the same to be done in violation of the
construction code, including but not limited to chapter 5D, the electrical code;
4) Perform any plumbing work or authorize the same to be done in violation of the
construction code, including but not limited to chapter 5F, the plumbing code; or
64
5) Perform any work covered by the construction code or authorize the same to be
done in violation of the provisions of chapter 448E, Hawai`i Revised Statutes,
relating to the licensing of electricians and plumbers."
SECTION 14. Chapter 5A, article 1, section 5A-1-3, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended to read as follows:
Section 5A-1-3. Scope; exceptions.
removal and demolition of every building or structure or any appurtenances connected or
attached to such buildings or structures within the County inland of the shoreline high
This chapter shall not apply to:
1) Work or installations not covered by the International Building Code, 2006
Hawai`i Administrative Rules;
2) Work on buildings or premises owned by or under the direct control of the Federal
government;
3) Work in public State or County road right of ways for utility installatiovris,street
y
code where installed:
A) Outside the proposed premises or boundary lines in a subdivision under
development; or
4) Pursuant to section 118E 13, Hawai`i Revised Statutes, work by employees of a
public utility within the State under a franchise or charter granted by the State
which is regulated by the public utilities commission and community antennae
television company, while so employed;
5) Agricultural buildings, structures, and appurtenances without electrical power
otherwise provided for in this construction code. No electrical power shall be
connected to a building or structure without first obtaining a permit for the
electrical work.]
This chapter shall apply to the design, construction, alteration, movement,
enlargement, replacement, repair, equipment, use and occupancy, location, removal and
demolition of buildings or structures or any appurtenances connected or attached to such
buildings or structures.
Exception: Detached one- and two-family dwellings and multiple single-family dwellings
and townhouses not more than three stories above grade plane in height with a separate
means of egress and their accessory structures not more than three stories above grade
plane in height shall be permitted to comply with the residential building code, chapter 5B,
65
Hawai'i County Code if provided with debris impact protection in accordance with Section
1609.2 Protection of Openings. Exception 3 in Section 1609.2 shall not apply."
SECTION 15. Chapter 5A, article 1, section 5A-1-6, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending the definition of"construction code"
to read as follows:
Construction code"means collectively: chapter 5, the construction administrative
code; chapter 5A, the building code; chapter 5B, the residential building code; chapter 5C,
the existing building code; chapter 5D, the electrical code; chapter 5E, the energy
conservation code; chapter 5F, the plumbing code; and all administrative rules adopted
pursuant to these chapters."
SECTION 16. Chapter 5A, article 1, section 5A-1-6, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending the definition of"permit" to read as
follows:
Permit" means a formal authorization issued by the authority having jurisdiction
that authorizes performance of specified work, pursuant to the construction code, including
the following chapters and all administrative rules adopted pursuant to [these] the
following chapters:
1) 5, the construction administrative code;
2) 5A, the building code;
5B, the residential building code;
4) 5C, the existing building code;
34] (5) 5D, the electrical code;
44] (6) 5E, the energy conservation code; and
5}) (7) 5F, the plumbing code."
SECTION 17. Chapter 5A, article 3, section 5A-3-21, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended to read as follows:
Section 5A-3-21. Appendices added to International Building Code.
The following appendices are hereby added to the International Building Code and
made a part of this code, as set forth in full in this article:
1) [Appendix L, Factory Built Housing;
24] Appendix M, Thatch Material on Exterior of Buildings—Protection Against
Exposure Fires;
34] (2) Appendix U, Hawaii Hurricane Sheltering Provisions for New Construction;
4)] (3) Appendix W, Hawai`i Wind Design Provisions for_New Construction;
5)] (4) Appendix X, Indigenous Hawaiian Architecture Structures[; and
6) Appendix Y, Tiny Houcea]."
66
SECTION 18. Chapter 5A, article 3, section 5A-3-22, of the Hawai`i County Code 1983
2016 Edition, as amended), is repealed.
SECTION L101
APPLICABILITY
L101.1 Purpose. These provisions arc applicable to the design,
construction, installation, and transportation of factory built
housing(FBH)within the County. Unless otherwise specified this
article shall be applicable only to FBH which is sold or offered for
ale to first users as defined below.
Exception: Manufactured homes manufactured and certified in
accordance with the Manufactured Home Construction and Safety
Housing and Urban Development. Foundation, exterior stairs,
additions and accessory structures shall comply with Article 1,
Adoption of the International Building Code and International
Residential Code for One and Two Family Dwellings.
codes shall be applicable unless indicated otherwise in this
article.
L101.2 Definitions. The following terms arc defined for
specialized use within this article:
Building official" means the director of the department of public
designed primarily for residential occupancy by human beings,
which is either entirely prefabricated or a-sembled at a place
other than the building site.
First user" means a person, firm or corporation who initially
of this definition.
device issued by the building official to indicate compliance with
the statutes and these rules.
Installation"m ans the assembly of FBH on site and the proses.,
of affixing FBH to land, a foundation or an existing building.
67
the building site.
Site" means the parcel of land on which FBH is installed.
red,
a) No person shall perform any of the following work or cause
or permit the same to be dont on any FBH in the County,
without first obtaining a permit for this work from the
building official:
1) Manufacture, install, erect, construct, enlarge, alter,
repair, relocate, improve, remove, convert, or demolish
any FBH;
2) Manufacture, erect, install, enlarge, alter, repair,
remove, convert, or replace any electrical work; or
3) Manufacture, erect, install, enlarge, alter, repair,
sprinkler, gas, or drainage piping work, or any fixture,
gas appliance, water heating, or water tr ating
equipment.
541; 542, 543, 544, 545, 546, 547, and 548.
L101.4 Building permit fee. A fee for each building permit as
set forth in section 5 7 3 of chapter 5, shall be paid to the building
official.
a) FBH manufactured in this County which is sold or offered
for sale to first users within this County shall bear the
insignia of approval issued by the building official indicating
b) FBH manufactured outside the County shall b ar the
insignia of approval issued by any governmental or
inspectional agency approved by the building official.
within the State of Hawaii shall comply with State of
at the factory outside of this state must be accomplished:
68
licensed supervising electrician, or master plumber,
respectively, of the state in which the factory is located,
if the manufacturer submits a quality control manual
2) By licensed building c:- . . .. , - - . • •. -, :
is located.
a) Each and every FBH manufactured outside of this County
shall be inspcctcd by a governmental or inspectional agency
approved by the building official in conformance with the
rcgulations. - - -
b) All manufacturing work, including building, electrical, and
plumbing, shall be inspected in the factory by the building
official to ensure compliance with the requirements of the
construction code. It shall be the duty of the permit holder
shall comply with sections 5 8 1, 5 8 3, 5 8 3, 5 8 4, 5 8 5, 5
86, and587.
a) Each and every FBH manufactured outside of this County
shall have a manufacturer's label on a metal plate showing
the manufacturer's name, serial number of the building,
manufacture date, design load criteria, and an inspection
stamp by a governmental or inspectional agency approved
by the building official securely fastened on the FBH;
b) Each and every FBH manufactured in the County of Hawai`i
the manufacturer's name, serial number of the building,
manufacture date, design load criteria, and building official
inspection stamp securely fastened on the FBH.
County and State traffic codes.]"
69
SECTION 19. Chapter 5A, article 3, section 5A-3-27, of the Hawai`i County Code 1983
2016 Edition, as amended), is repealed.
APPENDIX Y
TINY HOUSES
SECTION Y101
GENERAL
Y101.1 Scope. This appendix shall be applicable to tiny houses
used as single dwelling units and tiny houses that contain a loft.
Tiny houses shall comply with the International Residential
Code except as otherwise stated in this appendix.
one loft, or loft space. Tiny houses that contain a loft may not be
used for any purpose other than as a detached single family
dwelling.
SECTION Y102
DEFINITIONS
Refer to Chapter 2 of the International Residential Code for
general definitions.
EGRESS ROOF ACCESS WINDOW. A skylight or roof window
designed and installed to satisfy the emergency escape and
rescue opening requirements in Section R310.
LANDING PLATFORM. A landing measuring two tr ads deep
and two risers tall, provided as the top step of a stairway
accessing a loft.
a . A. 9. y.
requirements of Section AV105, and used as a living or sleeping
space.
TINY HOUSE. A dwelling which is 500 square feet (37m2) or
9 .
n.ch floor of a building measured from the exterior faces of the
70
exterior walk. The total floor arca shall include enclosed
attached accessory structures such as garages or storage areas.
Unenclosed attached structures such as carports, breezeways,
lanais, or porches shall be excluded.
FOUNDATIONS
supported on continuous solid or fully grouted masonry or
other approved structural systems pursuant to Chapter 4 of the
International Residential Code, which shall be of sufficient
determined from the character of the soil. Footings shall be
supported on undisturbed natural coils or engineered fill.
SECTION Y104
Y104.1 Minimum ceiling height. Habitable space and
hallways in tiny houses shall have a ceiling height not less than 6
shall have a ceiling height not less than 6 feet 4 inches (1930
obstructions.
6 foot 8 inches (2032 mm).
LOFTS
Y105.1 Minimum loft areas. Lofts used as a sleeping or living
space shall meet the minimum ar n and dimension requirements
of Sections Y105.1.1 through Y105.1.3.
Y105.1.1 Minimum area. Lofts shall have a floor arca of not
less than 35 square feet (3.25 m2),
feet (1524 mm) in any horizontal dimension.
Y105.1.3 Height effect on loft area. Portions of a loft with a
finished floor to the finished ceiling shall not be considered as
contributing to the minimum required area for the loft.
71
Exception: Under gable roofs with a minimum slope of 6:12,
portions of a loft with a sloping ceiling measuring less than 16
inches (406 mm) from the finished floor to the finished ceiling
shall not be considered as contributing to the minimum required
arca for the loft.
height of not less than 3 feet (914.4 mm).
Y105.1.4.4.1 Undersized lofts. Lofts having a ceiling height of
less than 6 feet (1828.8 mm) for more than 50 percent of the
required minimum area shall comply with both of the following:
1. All wall and ceiling of the dwelling unit shall be a
A finish, throughout the entire dwelling unit.
2. In addition to the loft smoke alarm required by Y105.4, all
other required smoke alarms within the dwelling unit
Y105.1.5 Maximum loft size. The aggregate floor ar a of a loft
shall not be greater than one third of the floor arca of the room
or space in which they are located.
Y105.2.4. All methods of loft access and egress shall be positively
anchored to prevent displacement.
than 17 inches (432 mm) in clear width at all points at or above
the permitted handrail height. The minimum width below the
handrail shall not be less than 20 inches (508 mm).
loft shall not be less than 6 feet 2 inches (1880 mm) m assured
vertically from the sloped line connecting the tread nosing in the
middle of the tr ad width.
Exception: The h adroom for landing platforms shall not be less
than 4 feet 6 inches (1372 mm).
shall be a minimum of 7 inches (178 mm) and a maximum of 12
72
1
inches (305 mm). Tread depth and riser height shall be
calculated with the following formulas:
Tread depth= 20 inches (508 mm) minus 4/3 ricer height
6r
Riser height = 15 inches (381 mm) minus 3/4 tread depth
Exception: Landing platforms shall measure two treads deep
and two risers tall.
R311.7.6.
Y105.2.1.5 Stairway guards. Guards at open sides of
stairways shall comply with Section R312.1.
have 12 inches (305 mm) minimum rung width and 10 inches
shall be capable of supporting a 300 pound (136 kg) load on any
The maximum height of a ladder shall be 8 feet (2438 mm).
Y105.2.2.2 Incline. Ladders shall be installed at 70 to 80
degrees from horizontal.
Y105.2.3 Alternating tread devices. Alternating tread devices
accessing lofts 200 square feet or less shall comply with the
devices shall have a tread depth of not less than 5 inches (127
216 mm), a tr ad width of not lc--s than 7 inches (178 mm)
and a riser height of not more than 9 1/2 inches (241 mm).
The tr ad depth shall be m asured horizontally between the
vertical planes of the foremost projections of adjacent tr uds.
The riser height shall be m asure vertically between 1 ading
edges of adjacent treads. The riser height and tr ad depth
provided shall result in an angle of ascent from the horizontal
I •
platform, landing or floor surface.
73
4. • • . - . . .• - .
shall comply with Sections R311.7.8.2 to R311.7.8.6.
Handrail height shall be uniform, not lees than 30 inches
The clear width at and below the handrails shall be not less
than 20 inches (508 mm).
I.
square feet or less shall comply with the following provisions:
Treads of ships ladders. Treads shall have a depth of not
less than 5 inches (127 mm). The tread shall be projected
such that the total of the tread depth plus the nosing
projection is not less than 8 1/2 inches (216 mm). The riser
height shall be not more than 9 1/2 inches (241 mm).
R311.7.8.2 to R311.7.8.6. Handrail height shall be uniform,
not less than 30 inches (762 mm) and not more than 34
inches (864 mm).
The cl ar width at and below the handrails shall be not less
than 20 inches (508 mm).
Y105.3 Loft guards. Loft guards shall be located along the open
side(s) of lofts located more than 30 inches (762 mm) above the
main floor. Loft guards shall be not less than 36 inches (914 mm)
connection to the loft.
R313.
Y105.5 Loft location. Lofts shall not be located directly above a
permanently installed cooking appliance. Permanently installed
cooking appliances shall not be located within 12 inches (304.8
plane of the loft edge.
74
EMOyi n6
EMERGENCY ESCAPE AND
Y106.1 General. Tiny houses shall meet the requirements of
Section R310 for emergency escape and rescue openings.
Exception: Egress roof access windows in lofts used as sleeping
where installed with the bottom of their clear opening no more
than 44 inches (1118 mm) above the loft floor provided the egress
roof access window complies with the minimum opening area
requirements of Section R310.1.]"
SECTION 20. Chapter 5D, article 1, section 5D-1-3, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended to read as follows:
Section 5D-1-3. Scope; exceptions.
This chapter shall apply to electrical installations within the County inland of the
shoreline high-water line. [Exceptions to these minimum requirements arc listed below.]
administrative code.]
This chapter shall not apply to[:
1) Work] work or installations not covered by the National Electrical Code, 2017
Edition, as adopted by [the State of Hawai`i;] chapter 5D, this electrical code.
2) Work on buildings or premises owned by or under the direct control of the
Federal government;
3) Work in public State or County road right of ways for utility installations, street
lighting, traffic signals, police and fire alarms, bridges, poles, hydraulic flood
control structures, and mechanical equipment not specifically regulated in this
code where installed:
A) Outside the proposed premises or boundary lines in a subdivision under
development; or
B) In an approved subdivision, where the work is in planned or actual
roadways or other common infrastructure ar as;
which is regulated by the public utilities commission and community antennae
television company, while so employed;
moving walks, and manlifts;
75
6) Replacement or repair of devices and apparatus of air conditioning, refrigeration,
and heating systems, except electrical work on overcurrent devices that arc not
physically attached to, or physically mounted on, such systems;
7) The construction, alteration or repair of electrical devices commonly used in the
home such as portable appliances as defined in section 5 1 5;
otherwise provided for in this construction code. No electrical power shall be
connected to a building or structure without first obtaining a permit for the
electrical work.]"
SECTION 21. Chapter 5D, article 1, section 5D-1-6, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending the definition of"permit" to read as
follows:
Permit" means a formal authorization issued by the authority having jurisdiction
that authorizes performance of specified work, pursuant to the construction code,
including the following chapters and all administrative rules adopted pursuant to
these] the following chapters:
1) 5, the construction administrative code;
2) 5A, the building code;
3) 5B, the residential building code;
4) 5C, the existing building code;
34](5) 5D, the electrical code;
4)](6) 5E, the energy conservation code; and
5)](7) 5F, the plumbing code."
SECTION 22. Chapter 5E, article 1, section 5E-1-6, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending the definition of"construction code"
to read as follows:
Construction code"means collectively: chapter 5, the construction administrative
code; chapter 5A, the building code; chapter 5B, the residential building code; chapter 5C,
the existing.building code; chapter 5D, the electrical code; chapter 5E, the energy
conservation code; chapter 5F, the plumbing code; and all administrative rules adopted
pursuant to these chapters."
76
SECTION 23. Chapter 5E, article 1, section 5E-1-6, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending the definition of"permit" to read as
follows:
Permit" means a formal authorization issued by the authority having jurisdiction
that authorizes performance of specified work, pursuant to the construction code,
including the following chapters and all administrative rules adopted pursuant to the
following chapters:
1) 5, the construction administrative code;
2) 5A, the building code;
3) 5B, the residential building code;
4) 5C, the existing building code;
3)1(5) 5D, the electrical code;
4)1(6) 5E, the energy conservation code; and
5)1(7) 5F, the plumbing code."
SECTION 24. Chapter 5F, article 1, section 5F-1-6, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending the definition of"construction code"
to read as follows:
Construction code" means collectively: chapter 5, the construction administrative
code; chapter 5A, the building code; chapter 5B, the residential building code; chapter 5C,
the existing building code;chapter 5D, the electrical code; chapter 5E, the energy
conservation code;-chapter 5F, the plumbing code; and all administrative rules adopted
pursuant to these chapters."
SECTION 25. Chapter 5F, article 1, section 5F-1-6, of the Hawai`i County Code 1983
2016 Edition, as amended), is amended by amending the definition of"permit"to read as
follows:
Permit" means a formal authorization issued by the authority having jurisdiction
that authorizes performance of specified work, pursuant to the construction code,
including the following chapters and all administrative rules adopted pursuant to the
following chapters:
1) 5, the construction administrative code;
2) 5A, the building code;
3) 5B, the residential building code;
4) 5C, the existing building code;
341(5) 5D, the electrical code;
4)1(6) 5E, the energy conservation code; and
5)1(7) 5F, the plumbing code."
77
SECTION 26. The amendments to the Hawai`i County Code 1983 (2016 Edition, as
amended), set forth in this ordinance, are indicated through the use ofRamseyer formatting.
Material to be repealed is bracketed and stricken. New material is underscored. In printing
this ordinance, the brackets,bracketed and stricken material, and underscoring need not be
included.
SECTION 27. The amendments to the International Residential Code and
International Existing Building Code that are incorporated by reference and set forth in this
ordinance, are indicated through the use of Ramseyer formatting. Material to be deleted is
bracketed and stricken. New material is underscored. In printing this ordinance, the
brackets, bracketed and stricken material, and underscoring need not be included.
SECTION 28. Severability. If any provision of this ordinance, or the application
thereof to any person or circumstance, is held invalid, the invalidity does not affect other
provisions or applications of the ordinance which can be given effect without the invalid
provision or application, and to this end the provisions of this ordinance are severable.
SECTION 29. Work performed under a permit issued before the effective date of this
ordinance and which is inspected on or after the effective date shall be approved if it meets
the requirements of either this code or the code being replaced by this ordinance.
SECTION 30. This ordinance shall apply to all applications for permits to be issued
pursuant to chapters 5, 9, and 17, Hawaii County Code, that are deemed complete by the
Department of Public Works on or after the effective date of this ordinance. An application
accepted before the effective date shall be approvable if it meets the requirements of either
this ordinance or the code being replaced by this ordinance.
SECTION 31. This ordinance shall take effect upon its approval, but nothing in this
ordinance shall be construed to prohibit any person from complying with the provisions of
this article and any amendments thereto adopted prior to the enactment of this ordinance.
1 ' DUCED BY:
AlrbkAgri
400011.111.
Woo _ MEMBER, CO PnIlr'WAI`I
Kona Hawai`i
Date of Introduction: July 7, 2021
Date of 1st Reading: August 4 2021
Date of 2nd Reading: August 18, 2021
Effective Date: September 8, 2021
REFERENCE Comm. 281.32
78
r
OFFICE OF THE COUNTY CLERK
r
County of Hawai`i CC : -'
Kona, Hawaii UN
Draft 2)1112! SEP -E3 Am ;:: 3q o
Introduced By: Sue Lee Loy (B/R) ROLL CALL VOTE
Date Introduced: July 7, 2021 AYES NOES ABS EX
First Reading: August 4, 2021 Chung X
Published: August 13 , 2021 David X
Inaba X
REMARKS. Kaneali'i-Kleinfelder X
Postponed: July 7 & 21, 2021 Kierkiewicz X
Kimball X
Lee Loy X
Richards X
Villegas X
Second Reading: August 18, 2021 7 1 1 0
To Mayor: August 27, 2021
Returned: September 8, 2021 ROLL CALL VOTE
Effective: September 8, 2021 AYES NOES ABS EX
Published: September 17, 2021
XChung
REMARKS: David X
Inaba X
Kaneali'i-Kleinfelder X
Kierkiewicz X
Kimball X
Lee Loy X
Richards X
Villegas X
5 2 2 0
I DO HEREBY CERTIFY that the foregoing BILL was adopted by the County Council published as
indicated above.
dllIlPIIIPWIIIIr'• 440
COUNCIL CHAI 9=
S
pproved/ isapproved this day r--
of -6//14 4 20 2( . COUNTY CLERK
44 (Draft 2)
Bill No.:
MAYOR, COUNTY OF HAWAII C-281/PWMTC-8
Reference:
Ord No.: 21 61