HomeMy WebLinkAboutBIL 126 Draft 01 2018-2020Of 114
COUNTY OF HAWAVI STATE OF HAWAVI
BILL NO. 126
ORDINANCE NO.
AN ORDINANCE AMENDING CHAPTER 5,ARTICLE 5, SECTION 5-84, OF THE
HAWAII COUNTY CODE 1983 (2016 EDITION,AS AMENDED), RELATING TO
ENERGY CONSERVATION.
BE IT ORDAINED BY THE COUNCIL OF THE COUNTY OF HAWAII:
SECTION 1. Chapter 5, article 5, section 5-84, of the Hawaii County Code 1983 (2016
Edition, as amended), is repealed.
SECTION 2. Chapter 5, of the Hawaii County Code 1983 (2016 Edition, as amended), is
amended by adding a new article to be designated article 5, and to read as follows:
Article 5. Energy Conservation.
Sections:
5-84 Purpose.
5-85(a) The International Energy Conservation Code incorporated.
5-85(b)(1) Subsection C101.1 amended.
5-85(b)(2) Subsection 0101.4 amended.
5-85(b)(3) Subsection C102.1 amended.
5-85(b)(4) Subsection C103.1 amended.
5-85(b)(5) Subsections C 103.3.2 and C 103.3.3 deleted in their entirety.
5-85(b)(6) Subsection C202 amended.
5-85(b)(7) Subsection 0401.2 amended.
5-85(b)(8) Subsection C402.1.1 amended.
5-85(b)(9) Table C402.1.3 deleted in its entirety and replaced.
5-85(b)(10) Subsection C402.2.3 amended.
5-85(b)(11) Table C402.4 deleted in its entirety and replaced.
5-85(b)(12) Subsection C402.4.3.5 added.
5-85(b)(13) Subsection C402.5 amended.
5-85(b)(14) Subsection 0403.2.4.2.4 added.
5-85(b)(15) Subsection C405.2 amended.
5-85(b)(16) Subsection C405.2.4 amended.
5-85(b)(17) Subsection C405.10 added.
5-85(b)(18) Subsection C406.3 amended.
5-85(b)(19) Subsection C408.2 amended.
5-85(b)(20) Subsection C408.2.4.1 deleted in its entirety.
5-85(b)(21) Subsection C408.3.1 amended.
5-85(b)(22) Subsection C501.4 amended.
5-85(b)(23) Subsection C503.3.1 amended.
5-85(b)(24) Subsection R101.1 amended.
5-85(b)(25) Subsection R103.1 amended.
5-85(b)(26) Subsections R103.3.2 and R103.3.3 deleted in their entirety.
5-85(b)(27) Subsection R202 amended.
5-85(b)(28) Subsection 8401.2 amended.
5-85(b)(29) Subsection R401.2.1 amended.
5-85(b)(30) Subsection R401.3 amended.
5-85(b)(31) Subsection R402.1 amended.
5-85(b)(32) Table R402.1.2 deleted in its entirety and replaced.
5-85(b)(33) Subsection R402.1.2 amended.
5-85(b)(34) Subsection R402.2 amended.
5-85(b)(35) Subsection R402.2.5 amended.
5-85(b)(36) Subsection 8402.3.2 amended.
5-85(b)(37) Subsection R402.4.1.2 amended.
5-85(b)(38) Subsection R403.5.5 added.
5-85(b)(39) Subsection R404.2 added.
5-85(b)(40) Subsection R404.3 added.
5-85(b)(41) Table R405.5.2(1) amended.
5-85(b)(42) Section 8407 added. (Also adds Table R407.1)
5-85(b)(43) Subsection R501.4 amended.
5-85(b)(44) Subsection R502.1 amended.
5-85(b)(45) Subsection R503.1.1 amended.
5-85(b)(46) Subsection R503.2 amended.
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Section 5-84. Purpose.
This article adopts with amendments,the International Energy Conservation Code, 2015
Edition, as it was incorporated into the Hawaii State Energy Conservation Code that became
effective on March 31, 2017. The purpose of the resulting article is to promote the design of
energy-efficient building envelopes and installation of energy-efficient mechanical, lighting, and
power systems by establishing minimum standards that promote modem and up-to-date energy-
efficient performance in the construction, alteration, or equipment of buildings or structures in
the County of Hawaii.
Section 5-85. International Energy Conservation Code adopted.
a) The"International Energy Conservation Code,2015 Edition"herein referred to as the
International Energy Conservation Code,"as copyrighted and published in 2015 by the
International Code Council,Incorporated, 500 New Jersey Avenue, 6th Floor, Washington,
DC 20001,is incorporated by reference and made a part of this chapter, subject to the
amendments hereinafter set forth in this article. The appendices of the International Energy
Conservation Code are not adopted except as provided in this article. A copy of the
International Energy Conservation Code shall be available for public inspection at the Hilo
and Kailua-Kona offices of the department ofpublic works and at the office of the county
clerk.
b) This incorporation by reference includes all parts of the International Energy Conservation
Code, 2015 Edition, subject to the amendments hereinafter set forth.
1) Subsection C101.1 of the International Energy Conservation Code is amended to read
as follows:
CIOLI Title. This code shall be known as the [fitmatien6d] Energy Conservation
Code [of NAME OF JURISDICTION] and shall be cited as such. [it is fefefred to
hefein as "this eode."] "This code"when used within the International Energy
Conservation Code as incorporated by reference herein, means the Energy
Conservation Code of the Co" of Hawai'i."
2) Subsection C101.4 of the International Energy Conservation Code is amended to read
as follows:
CIOIA Applicability. Where, in any specific case, different sections of this code or
other adopted codes specify different materials, methods of construction or other
requirements, the [most r-estfiefi ve shall gave ] code offleial shall determine which
code requirements shall prevail. Where there is a conflict between a general
requirement and a specific requirement, the specific requirement shall govern."
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3) Subsection C102.1 ofthe International Energy Conservation Code is amended to read
as follows:
C102.1 General. This code is not intended to prevent the use of any material,
method of construction, design or insulating system not specifically prescribed herein,
provided that such construction, design or insulating system has been approved by the
code official as meeting the intent of this code.
The code official may allow alternative energy conservation standards for
nonstandard building;materials, unique or limitations of design, special methods of
construction, and geographical location. The code official may require construction
plans, research reports, and tests prepared by a registered design professional in order
to determine whether to allow such lower standards."
4) Subsection C 103.1 of the International Energy Conservation Code is amended to read
as follows:
C103.1 General. [rviio+ruv+ivii ,i nts n athe ting data shall e
documents shall be pfepafed by a fegistered design professional whefe fequifed by
eenditions the eede official is authorized t-."i--Messafy eenstfuefieft3
uvvuuivuw to be
Yrn
Exeeptiow The eede offieial is authorized to waive the r-equifemefAs4ef
Construction documents and other supporting data shall be submitted to indicate
compliance with this code. The construction documents shall be prepared designed,
approved, and observed by a duly registered licensed professional as required by
chapter 464, Hawaii Revised Statutes and in accordance with the provisions of
chapter S, Hawaii County Code. The licensed professional shall certify via a signed
statement on the plans, that the project complies with this code.
Exception: Any building work that is not required to be prepared, designed
approved, or observed by a licensed professional architect or engineer pursuant to
chapter 464, Hawaii Revised Statutes, shall be certified by the owner."
S) Subsections 0103.3.2 and C103.3.3 ofthe International Energy Conservation Code
are deleted in their entirety.
C103.3.2
permit
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and the eanstfuetion of whieh has been pursued in good faithMthin 180 days afte
the eff efive date f this .a ,7 1, t been abandoned.
eenstmetion deeuffieftts for the entife system ha-Ve been submitted or S
pfevided adequate infefmatien and detailed statemetAs have beett filed eoffTlyi-ng
with all pertinent fequifemeftts of this eede. The holdefs of stieh peffnit shall pfeee
rstem t »l! be n v,te ]"
6) Subsection C202 ofthe International Energy Conservation Code is amended by
adding the following new definitions to be appropriately inserted and to read as
follows:
CODE OFFICIAL. The director of the department of public works of the County
of Hawaii,the director's authorized representative, or other designated authority
charged with the administration and enforcement of this code."
COOL ROOF. A cool roof is a roofing system that can deliver high solar
reflectance, and high thermal emittance as specified in table C402.3."
HABITABLE SPACE. A space in a building for living, sleeping, eating or cooking.
Bathrooms,toilet rooms, closets, halls, storage or utility spaces and similar areas are
not considered habitable spaces."
OCCUPIABLE SPACE.A room or enclosed space designed for human occupancy
in which individuals congregate for amusement, educational or similar purposes or in
which occupants are engaged at labor, and which is equipped with means of egress
and light and ventilation facilities meeting the requirements of this code."
UNCONDITIONED FLOOR AREA. The horizontal projection of the floors
associated with the unconditioned space."
UNCONDITIONED SPACE. An area, room or space that is enclosed within the
building thermal envelope and is not directly nor indirectly heated or cooled."
7) Subsection C401.2 of the International Energy Conservation Code is amended to read
as follows:
C401.2 Application. Commercial buildings shall comply with one of the following:
1. The requirements of ANSIIASHRAEIIESNA 90.1.
2. The requirements of Sections C402 through C405. In addition, commercial
buildings shall comply with Section C406 and tenant spaces shall comply with
Section C406.1.1.
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3. The requirements of Sections C402.5, C403.2, C404, 0405.2, C405.3, C405.5,
C405.6 and C407. The building energy cost shall be equal to or less than 85
percent of the standard reference design building.
Exception: For buildings 2,500 square feet or less with 4 tons of cooling or less
where it is determined by the code official that the building configuration is
similar to that of a residential building,the requirements in Sections R401.2.1
Tropical Zone shall be permitted to be used."
8) Subsection C402.1.1 of the International Energy Conservation Code is amended to
read as follows:
C402.1.1 Low-energy use buildings. The following low-energy use buildings, or
portions thereof separated from the remainder of the building by building thermal
envelope assemblies complying with this section, shall be exempt from the building
thermal envelope provisions of Section C402.
1. Those with a peak design rate of energy usage less than 3.4 Btu/h•ft2 (10.7
W/m2) or 1.0 watt per square foot(10.7 W/M2) of floor area for space
conditioning purposes.
2. [Those that do not eafftain eondit4oned-spaee] Unconditioned space that does
not contain occupiable space and/or habitable space.
3. Greenhouses.
4. Open park pavilions where there is no enclosed space."
9) Table C402.1.3 from the International Energy Conservation Code is deleted in its
entirety and replaced with the following:
TABLE C402.1.3
OPAQUE THERMAL ENVELOPE INSULATION COMPONENT
MINIMUM REQUIREMENTS,RNALUE METHODa- CLIMATE ZONE I
CLIMATE ZONE I
All other Group R
Roofs
Insulation entirely R-10ci R-12.5ciaboveroofdeck
Metal buildingsa,b R-30 or R-19 with cool roof R-30 or R-19 with cool roof
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Attic and other R-30 or R-19 with cool roofR-30 or R-19 with cool roof
Walls, above grade
Mass R-5.7cid R-5.7cid
Metal building R-13 +R-6.5ci R-13 +R-6.5ci
Metal framed R-13 +R-5ci R-13 +R-5ci
Wood framed and other R-13 +R-3.8ci or R-20 R-13 +R-3.8ci or R-20
Walls, below grade
Below-grade wall NR NR
Floors
Mass NR NR
Joist/framing NR NR
Slab-on-grade floors
Unheated slabs NR NR
Heated slabs R-7.5 for 12"below R-7.5 for 12"below
Opaque doors
Nonswinging R-4.75 R-4.75
For SI• I inch=25.4 mm 1 pound per square foot=4.88 kg/M2, 1 pound per cubic foot= 16 kg/m3
ci=Continuous insulation,NR=No requirement LS=Liner system
a. Assembly descriptions can be found in ANSI/ASHRAEIIESNA Appendix A
b. where using R-value compliance method a thermal spacer block shall be provided,otherwise use
the U-factor compliance method in Table 0402.1.4.
c. Cool roof is defined as a roofwith three-year aged solar reflectance of0.55 and wear aged thermal
emittance of0.75 or 3-year aged solar reflectance index of 64
d. R-5.76 is allowed to be substituted with concrete block walls complying with ASTM C 90
ungrouted or partially grouted at 32 inches or less on center vertically and 48 inches or less on center
horizontally,with ungrouted cores filled with materials having maximum thermal conductivity of
0.44 Btu-in/h-V OF. See Section 0402.2.3."
10) Subsection C402.2.3 of the International Energy Conservation Code is amended to
read as follows:
C402.2.3 Thermal resistance of above-grade walls. The minimum thermal
resistance (R-value) of materials installed in the wall cavity between framing
members and continuously on the walls shall be as specified in Table C402.1.3, based
on framing type and construction materials used in the wall assembly,
7
Exceptions•
Continuous insulation for wood, metal framed, and mass walls are not required
when at least one of the following conditions is met:
1. Walls have a covering with a reflectance of> 0.64.
2. Walls have overhangs with a projection factor equal to or greater than 0.3.,
The projection factor is the horizontal distance from the surface of the wall
to the farthest most point of the overhang divided by the vertical distance
from the first floor level to the bottom most point of the overhang.
3. Concrete, CMU, and similar mass walls are 6 inches or greater in
thickness.
The R-value of integral insulation installed in concrete masonry units shall not be
used in determining compliance with Table C402.1.3.
Mass walls" shall include walls:
1. Weighing not less than 35 psf(170 kg/m2) of wall surface area.
2. Weighing not less than 25 psf(120 kg/m2) of wall surface area where the
material weight is not more than 120 pef(1900 kg/m3).
3. Having a heat capacity exceeding 7 Btu/ft2 - OF (144 kJ/m2- K).
4. Having a heat capacity exceeding 5 BtU/ft2• OF (103 kJ/m2- K), where the
material weight is not more than 120 pcf(1900 kg/M3).,,
1) Table C402.4 from the International Energy Conservation Code is deleted in its
entirety and replaced with the following:
TABLE C402.4
BUILDING ENVELOPE FENESTRATION
MAXIMUM U-FACTOR AND SHGC REQUIREMENTS -
CLIMATE ZONE 1
CLIMATE ZONE 1
Vertical fenestration
U-factor
Fixed fenestration 0.50
Operable fenestration 0.65
Entrance doors 1.10
8
SHGCb
Orientation' SEW N
PF <0.2 0.25 0.33
0.2 <PF <0.5 0.30 0.37
PF> 0.5 0.40 0.40
Skylights
U-factor 0.75
SHGC 0.35
NR=No requirement,PF=Projection factor.
a. "N"indicates vertical fenestration oriented within 45 degrees oftrue north. "SEW'
indicates orientations other than"N." For buildings in the southern hemisphere,reverse
south and north.
b. Exception: Jalousie windows are exempt from SHGC requirements."
12) A new subsection C402.4.3.5 is added to the International Energy Conservation Code
to read as follows:
C402.4.3.5 Area-weighted SHGC. In commercial buildings an area-weighted
average of fenestration products shall be permitted to satisfy SHGC requirements.
Exception: Jalousie windows are exempt from SHGC requirements."
13) Subsection C402.5 of the International Energy Conservation Code is amended to read
as follows:
C402.5 Air leakage-thermal envelope (Mandatory). The thermal envelope of
buildings shall comply with Sections C402.5.1 through C402.5.8, or the building
thermal envelope shall be tested in accordance with ASTM E 779 at a pressure
differential of 0.3 inch water gauge (75 Pa) [or afl e"ivalent,.. ethea appr-ave'dJ-aU*-the
e-ede vffieiafl and deemed to comply with the provisions of this section when the
tested air leakage rate of the building thermal envelope is not greater than 0.40 cfm/ft2
0.2 Us ° m2). Where compliance is based on such testing, the building shall also
comply with Sections C402.5.5, C402.5.6 and C402.5.7."
14) A new subsection C403.2.4.2.4 is added to the International Energy Conservation
Code to read as follows:
C403.2.4.2.4 Door switches. Opaque and glass doors opening to the outdoors in
hotel and motel sleeping units, guest suites, and time-share condominiums shall be
provided with controls that disable the mechanical cooling or reset the cooling
9
setpoint to 90° F or greater within five minutes of the door opening. Mechanical
cooling;may remain enabled if the outdoor air temperature is below the space
temperature."
15) Subsection 0405.2 of the International Energy Conservation Code is amended to read
as follows:
C405.2 Lighting controls (Mandatory). Lighting systems shall be provided with
controls as specified in Sections C405.2.1, 0405.2.2, C405.2.3, 0405.2.4 and
0405.2.5.
Exceptions: Lighting controls are not required for the following:
I. Areas designated as security or emergency areas that are required to be
continuously lighted.
2. Interior exit stairways, interior exit ramps and exit passageways.
3. Emergency egress lighting that is normally off.
4. Spaces where the designed lighting power densities are less than 70% of
the lighting power densities specified in Table C405.4.2(1) and Table
C405.4.2(2)."
16) Subsection C405.2.4 of the International Energy Conservation Code is amended to
read as follows:
C405.2.4 Specific application controls. Specific application controls shall be
provided for the following:
1. Display and accent light shall be controlled by a dedicated control that is
independent of the controls for other lighting within the room or space.
2. Lighting in cases used for display case purposes shall be controlled by a
dedicated control that is independent of the controls for other lighting within
the room or space.
3. Hotel and motel sleeping units [aftd]s guest suites, and time-share
condominiums shall have a master control device that is capable of
automatically switching off all installed luminaires and switched receptacles
within 20 minutes after all occupants leave the room.
Exception: Lighting and switched receptacles controlled by captive key
systems.
4. Supplemental task lighting, including permanently installed under-shelf or
under-cabinet lighting, shall have a control device integral to the luminaires or
be controlled by a wall-mounted control device provided that the control
device is readily accessible.
5. Lighting for nonvisual applications, such as plant growth and food warming,
shall be controlled by a dedicated control that is independent of the controls
for other lighting within the room or space.
10
6. Lighting equipment that is for sale or for demonstrations in lighting education
shall be controlled by a dedicated control that is independent of the controls
for other lighting within the room or space."
17) A new subsection C405.10 is added to the International Energy Conservation Code to
read as follows:
C405.10 Sub-metering (Mandatory). In new buildings with tenants, metering
shall be collected for the entire building and individually for each tenant occupying
1,000 ft' (total enclosed and unenclosed) (93 in') or more. Tenants shall have access
to data collected for their space. A tenant is defined as "one who rents or leases from
a landlord."
18) Subsection C406.3 of the International Energy Conservation Code is amended to read
as follows:
C406.3 Reduced lighting power density. The total interior lighting power(watts)
of the building shall be determined by using [90] 80 percent ofthe lighting power
values specified in Table C405.4.2(1) times the floor area for the building types, or by
using [90] 80 percent of the interior lighting power allowance calculated by the
Space-by-Space Method in Section 0405.4.2."
19) Subsection C408.2 of the International Energy Conservation Code is amended to read
as follows:
C408.2 Mechanical systems and service water-heating systems commissioning
and completion requirements. Pfief to the final meehanieal and plumbing
inspeaians, The registered design professional or approved agency shall provide
evidence of mechanical systems commissioning and completion in accordance with
the provisions ofthis section to the owner or owner's authorized agent.
Construction document notes shall clearly indicate provisions for commissioning and
completion requirements in accordance with this section and are permitted to refer to
specifications for further requirements. Copies of all documentation shall be given to
the owner or owner's authorized agent and made available to the code official upon
request in accordance with Sections 0408.2.4 and C408.2.5.
Exceptions: The following systems are exempt:
1. Mechanical systems and service water heater systems in buildings where
the total mechanical equipment capacity is less than 480,000 Btu/h(140.7
kW) cooling capacity and 600,000 Btulh(175.8 kW) combined service
water-heating and space-heating capacity.
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2. Systems included in Section C403.3 that serve individual dwelling units
and sleeping units."
20) Subsection C408.2.4.1 of the International Energy Conservation Code is deleted in its
entirety.
C408.2.4.1 Aeeeptanee of 13141dings,be
21) Subsection C408.3.1 ofthe International Energy Conservation Code is amended to
read as follows:
C408.3.1 Functional Testing. [ The registered
design professional shall provide to the owner or owner's representative evidence that
the lighting control systems have been tested to ensure that control hardware and
software are calibrated, adjusted,programmed and in proper working condition in
accordance with the construction documents and manufacturer's instructions.
Functional testing shall be in accordance with Sections C408.3.1.1 and C408.3.1.2 for
the applicable control type."
22) Subsection C501.4 of the International Energy Conservation Code is amended to read
as follows:
C501.4 Compliance.Alterations, repairs, additions and changes of occupancy to, or
relocation of, existing buildings and structures shall comply with the provisions and
regulations for alterations, repairs, additions and changes of occupancy or relocation,
fespeetively, '
Fuel Gas Code,International Mechanical Code,Intepnoti
Plumbing Code,International Pi-oper-0,AMMtenanee Code, International Private
r,wag Disposal Code ,,,.,,a NFP n 7-0] as adopted by the building official. "
23) Subsection C503.3.1 ofthe International Energy Conservation Code is amended to
read as follows:
C503.3.1 Roof replacement.Roof[T,,, r,ee ,,nts shall eemply with Table C402.1.3,
ef-G402.1.4 whefe the existing roof assembly is part of the budding thermal-en+,-
eenla ns iftsulation ent4,'t. .bob„ e the roof ae„4. ] replacement of uninsulated
roofs shall include at least one of the following:
1. Energy Star compliant roof covering;
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2. Radiant barrier; or
3. Attic ventilation via solar attic fan(s), or ridge ventilation, or gable ventilation."
24) Subsection R101.1 of the International Energy Conservation Code is amended to read
as follows:
R101.1 Title. This code shall be known as the t -Wernation ] Energy Conservation
Code of NAME OF 1r4SDICTION], and shall be cited as such. [it is fefffed-+&
efeift-AS "t"His e0de="] "This code"when used within the International Energy
Conservation Code as incorporated by reference herein, means the Energy
Conservation Code ofHawaii County."
25) Subsection 8103.1 of the International Energy Conservation Code is amended to read
as follows:
R103.1 General. [Ganstr-uefien daeuments,teehnieal r-epofts and othef sttppei4ing
data shall be submitted in eiie of mefe sets with eaeh application f0f a pefmit. The
eenstfuetieii daeuments and teehnieal fepefts shall be pfepafed by a registered desig
professional whefe fequifed by the statutes of the jtifisdietieft in whieh the pr-qjeet is-
te be eanstfueted. Whefe speeial eandifiens exist, the eode offieial is authefized to
essafy eenstffli etieft doeumefAs to be pfepafed by a fegistefed desig
Exeeptiow The eode offieial is au-thefized to waive the fequifeffiefAs-fof
eonstfuetion daeuments of ethef stipporting data if the eode offieial determines
they are not fleeessafy to e0fififm eemplia-Bee with this code.-]
Construction documents and other supporting data shall be submitted to indicate
compliance with this code. The construction documents shall be prepared, designed,
qpproved, and observed by a duly registered licensed professional as required by
chapter 464, Hawaii Revised Statutes and in accordance with the provisions of
chapter 5, Hawaii County Code. The licensed professional shall certify via a signed
statement on the plans,that the project complies with this code.
Exception: Any building, electrical, or plumbing work that is not required to be
prepared, designed, approved, or observed by a licensed professional architect or
engineer pursuant to chapter 464, Hawaii Revised Statutes, shall be certified by
the owner."
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26) Subsections R103.3.2 and 8103.3.3 of the International Energy Conservation Code
are deleted in their entirety.
R103.3.2
and the eenstfuetion of which has been pufstted in good faith within 180 days afte
the effeetive date ef this eede and has not been abandoned.
R103.3.3 Phased appfovah The eode offieial shall ha-,e the atAhefity to issue a
eenstfuefieft daeuments for-the efftife system have been submitted or approved-,
provided ade"ate in-fafmation and detailed statemefAs have been filed eemplyiflg
si.I'V'GiLi
system will be gr-apAed.]"
27) Subsection 8202 of the International Energy Conservation Code is amended by
adding the following new definitions to be appropriately inserted and to read as
follows:
CODE OFFICIAL. The director of the department of public works ofthe County
ofIlawai`i,the director's authorized representative, or other designated authority
charged with the administration and enforcement of this code."
COOL ROOF. A cool roof is a roofing system that can deliver high solar
reflectance, and high thermal emittance as specified in table C402.3."
HABITABLE SPACE.A space in a building for living sleeping eating or cooking.
Bathrooms,toilet rooms, closets, halls, storage or utility spaces, garages or carports,
and similar areas are not considered habitable spaces."
OCCUPIABLE SPACE.A room or enclosed space designed for human occupancy
in which individuals congregate for amusement, educational or similar purposes or in
which occupants are engaged at labor, and which is equipped with means of egress
and light and ventilation facilities meeting the requirements of this code."
UNCONDITIONED FLOOR AREA. The horizontal projection of the floors
associated with the unconditioned space."
UNCONDITIONED SPACE. An area, room or space that is enclosed within the
building thermal envelope and is not directly nor indirectly heated or cooled."
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28) Subsection R401.2 of the International Energy Conservation Code is amended to read
as follows:
R401.2 Compliance. Projects shall comply with one of the following:
1. Sections [R404] R401.3 through R404.
2. Section 8405 and the provisions of Sections R401 through R404 labeled
Mandatory."
3. An energy rating index (ERI) approach in Section R406.
4. The tropical zone requirements in Section 8401.2.1 and R401.3."
29) Subsection R401.2.1 of the International Energy Conservation Code is amended to
read as follows:
R401.2.1 Tropical zone. Residential buildings in the tropical zone at elevations
below 2,400 feet(731.5 m)] 5,000 feet above sea level shall be deemed to comply
with this chapter where the following conditions are met:
1. Not more than one-half of the [oeeupied sp dwelling unit area is air
conditioned.
2. The [oeeupied space] dwelling unit is not heated.
3. Solar, wind, or other renewable energy source supplies not less than [90] 90
percent of the energy for service water heating.
Exception: A water heating device as approved via Solar Hot Water
Heater Variance by the Department of Business, Economic Development
Tourism, Hawaii State Energy Office.
4. Glazing in [conditioned spaee has dwelling units shall have a maximum
solar heat gain coefficient foless thaii or-equal ton nn of has an overhanbg
with a projeetion faetef eqtfal to of gFeater than 0 as specified in Table
R401.2.1.
Table 401.2.1
Vertical Fenestration Glazing SHGC Re uirements
Projection Factor(pf) of overhang
from base of average vertical SHGC
fenestration glazigg sill*
0.30 0.25
0.30-0.49 0.40
0.50 N/A
Exceptions:
a. North-facing vertical fenestration glazing with Pf>0.20 are exempt from SHGC
requirements. Overhangs shall extend 2 feet on each side of vertical fenestration
glazing or to nearest wall,whichever is less.
15
b. Jalousie windows are exempt from SHGC requirements.
c. "N"indicates vertical fenestration oriented within 45 degrees of true north.
SEW"indicates orientations other than"N".
5. Skylights in dwelling units shall have a maximum U-factor as specified in
Table R402.1.2.
5]6. Permanently installed lighting is in accordance with Section R404.
6. The ex4efiof roof suffaee eemplies with eiie of the options in Table C 4 02.3
1 fooPeeiling has insulation with an R i,,alue of R 15 of gfeatef. if
attics above the instilatian are vented and atties below the iiistliation are-
utrPented.]
7. [Roof suffaeesa- e a minitntim slope of/4 ineh pe feet ftm. The
The roof/ceiling complies with one of the following options:
A. Comply with one of the roof surface options in Table C402.3 and
install R-13 insulation orrg eater.
B. Install R-19 insulation or greater.
If present, attics above the insulation are vented and attics below the
insulation are unvented.
Exception: The roof/ceiling assembly is permitted to comply Section
R407.
8. Operable fenestration provides ventilation area equal to not less than 14
percent of the floor area in each habitable room. Alternatively, equivalent
ventilation of 2 air changes per hour is provided by a mechanical ventilation
fan.
9. Bedrooms with exterior walls facing two different directions have operable
fenestration on exterior walls facing two different directions.
10. Interior doors to bedrooms are capable of being secured in the open position.
11. A ceiling fan [er]z ceiling fan rough-in or whole-house fan is provided for
bedrooms and the largest space that is not used as a bedroom.
12. Walls, floors, and ceilings separating air conditioned spaces from non-air
conditioned spaces shall be constructed to limit air leakage in accordance with
the requirements in Table R402.4.1.1. Blower door test is optional."
16
30) Subsection 8401.3 of the International Energy Conservation Code is amended to read
as follows:
R401.3 Certificate (Mandatory).A permanent certificate shall be completed by the
builder or registered design professional and posted on a wall in the space where the
furnace is located, a utility room or an approved location inside the building. Where
located on an electrical panel, the certificate shall not cover or obstruct the visibility
ofthe circuit directory label, service disconnect label or other required labels. The
certificate shall [list]:
1. List the predominant R-values of insulation installed in or on ceiling/roof,
walls, [fo; dafien (slab, baseffiefil wall, efawlspaee wall and flaef)] and ducts
outside conditioned spaces; U-factors for fenestration and the solar heat gain
coefficient (SHGC) of fenestration, and the results from any required duct
system and building envelope air leakage testing done on the building. Where
there is more than one value for each component,the certificate shall list the
value covering the largest area. [The eeffifiBate shall list]
2. List the types and efficiencies of heating, cooling and service water heating
equipment. Where a gas-fired unvented room heater, electric furnace or
baseboard electric heater is installed in the residence,the certificate shall list
gas-fired unvented room heater," "electric furnace" or "baseboard electric
heater," as appropriate. An efficiency shall not be listed for gas-fired unvented
room heaters, electric furnaces or electric baseboard heaters.
3. Indicate which areas have been designed and constructed as conditioned or
unconditioned space.
4. Include the following text: "The addition of mechanical cooling or heating to
an unconditioned space requires a building permit. The addition of cooling
without proper design and construction can have adverse health, safe1y, and
conservation consequences."'
3 1) Subsection R402.1 of the International Energy Conservation Code is amended to read
as follows:
R402.1 General (Prescriptive).
The building thermal envelope shall meet the requirements of Sections R402.1.1
through R402.1.5.
Exception: The following low-energy buildings, or portions thereof, separated
from the remainder of the building by building thermal envelope assemblies
complying with this section shall be exempt from the building thermal envelope
provisions of Section R402.
17
1. Those with a peak design rate of energy usage less than 3.4 Btu/h - ft'
10.7 W/m2) or 1.0 watt/ft'(10.7 W/mz) of floor area for space-
conditioning purposes.
2. [ Unconditioned space that
does not contain habitable space.
3. Unconditioned dwellings with enclosed habitable areas less than 1,100
square feet."
4. Dwellings with permitted, off-grid, self supplying photovoltaic with
battery back up."
32) TABLE R402.1.2 of the International Energy Conservation Code is deleted in its
entirety and replaced with the following:
TABLE R402.1.2
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENTa
WOOD CRAWL
CLIMATE FENESTRATION SKYLIGHT GLAZED CEILING FRAME MASS FLOOR BASEMENT SLAB SPACE
ZONE U-FACTOR° U-FACTOR FENESTRATION R-VALUE WALL WALL R-VALUE WALL R- WALL
b SHGC b,c,g R-VALUE d R-VALUE R-VALUE VALUE R-VALUE
j-f DEPTH
I NR 0.75 0.25 30 13 314 0 0 0 0
For SI: 1 foot=304.8 mm
a. R-values are minimums. U-factors and SHGC are maximums.When insulation is installed in a cavity which is less than the label or design
thickness ofthe insolation,the installed R-value ofthe insulation shall not be less than the R-value specified in the table,
b. The fenestration U-factor column excludes skylights.The SHGC column applies to all glazed fenestration.Exception Sk-ylights may be
excluded from glazed fenestration SHGC requirements in climate zones I through 3 where the SHGC for such skylights does not exceed
0.30.
C. Exception:Iffenestration have overhangs with projection factors,the maximum solar heat gain coefficient shall be as specified in Table
R401.2.1.
d. R4021.2 and R402.2 allow use of R407.
e. The second R-value applies when more than halfthe insulation is on the interior ofthe mass wall
f. Exception:R-value for mass walls are not required if:mass walls have a covering with reflectance of>0.64:mass walls have overhangs
with a projection factor equal to or greater than 0.3.CMU or similar mass walls are 6 inches or greater in thickness.
g. Exception:Jalousie windows are exempt from SHGC requirements."
33) Subsection 8402.1.2 of the International Energy Conservation Code is amended to
read as follows:
R402.1.2 Insulation and fenestration criteria(Prescriptive).
The building thermal envelope shall meet the requirements of Table R402.1.2, [bred
an the climate zone speeffied in Ghaptef--3-.]
Exception: Insulation values of above-grade walls and ceilings shall be permitted
to comply with Section R407."
18
34) Subsection R402.2 of the International Energy Conservation Code is amended to read
as follows:
R402.2 Specific insulation requirements (Prescriptive).
In addition to the requirements of Section R402.1, insulation shall meet the specific
requirements of Sections 8402.2.1 through R402.2.13.
Exception: Above-grade walls and ceilings shall be permitted to comply with
Section R407."
35) Subsection R402.2.5 of the International Energy Conservation Code is amended to
read as follows:
R402.2.5 Mass walls. Mass walls for the purposes of this chapter shall be
considered above-grade walls of concrete block, concrete, insulated concrete form
ICF), masonry cavity,brick(other than brick veneer), earth (adobe, compressed
earth block, rammed earth) and solid timber/logs, or any other walls having a heat
capacity greater than or equal to 6 BtU/ft2 x'F (123 kJ/m2 x K).
Exception: Insulation or R-value for mass walls, indicated in Table 8402.1.2, is
not required when at least one of the following conditions is met:
1. Walls have a covering with a reflectance of> 0.64.
2. Walls have overhangs with a projection factor equal to or greater than 0.3.
The projection factor is the horizontal distance from the surface of the wall
to the farthest most point of the overhang divided by the vertical distance
from the first floor level to the bottom most point of the overhang.
3. Concrete, CMU, and similar mass walls are 6 inches or greater in
thickness."
36) Subsection R402.3.2 of the International Energy Conservation Code is amended to
read as follows:
R402.3.2 Glazed fenestration SHGC. Fenestration shall have a maximum solar
heat gain coefficient as specified in Table R402.1.2. An area-weighted average of
fenestration products more than 50-percent glazed shall be permitted to satisfy the
SHGC requirements.
Exceptions•
1. Jalousie windows are exempt from SHGC requirements.
2. If fenestrations have overhangs with projection factors, the maximum
solar heat gain coefficient shall be as specified in Table R401.2.1.
Dynamic glazing shall be permitted to satisfy the SHGC requirements of Table
R402.1.2 provided the ratio of the higher to lower labeled SHGC is greater than or
19
equal to 2.4, and the dynamic glazing is automatically controlled to modulate the
amount of solar gain into the space in multiple steps. Dynamic glazing shall be
considered separately from other fenestration, and area-weighted averaging with other
fenestration that is not dynamic glazing shall not be permitted.
Exception: Dynamic glazing is not required to comply with this section when
both the lower and higher labeled SHGC already comply with the requirements of
Table R402.1.2."
37) Subsection R402.4.1.2 of the International Energy Conservation Code is amended to
read as follows:
R402.4.1.2 Testing. The building or dwelling unit [shall] may be tested and verified
as having an air leakage rate not exceeding five air changes per hour in Climate
Zones 1 and 2, and three air changes per hour in Climate Zones 3 through 8. Testing
shall be conducted in accordance with ASTM E 779 or ASTM E 1827 and reported at
a pressure of 0.2 inch w.g. (50 Pascals). [W efe ,.ad by the eode ffiekti te4i ,,
shall be eendueted by an approved third pafty. A wfitten report of the festfits of
test shall be signed by the pafty eefldtiefifig the test end pfavided to the eode
Testing shall be performed at any time after creation of all penetrations of the
building thermal envelope.
During testing:
1. Exterior windows and doors, fireplace and stove doors shall be closed, but not
sealed, beyond the intended weatherstripping or other infiltration control
measures.
2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers
shall be closed, but not sealed beyond intended infiltration control measures.
3. Interior doors, if installed at the time of the test, shall be open.
4. Exterior doors for continuous ventilation systems and heat recovery
ventilators shall be closed and sealed.
5. Heating and cooling systems, if installed at the time of the test, shall be turned
off.
6. Supply and return registers, if installed at the time of the test, shall be fully
open."
3 8) A new subsection R403.5.5 is added to the International Energy Conservation Code
to read as follows:
R403.5.5 Solar water heating. Solar water heating systems are required for new
single-family residential construction pursuant to section 196-6.5, Hawaii Revised
Statutes.
20
Exception: A water heating device as approved via Solar Hot Water Heater
Variance by the Department of Business, Economic Development& Tourism,
Hawai`i State Energy Office."
39) A new subsection R404.2 is added to the International Energy Conservation Code to
read as follows:
R404.2 Ceiling Fans. A ceiling fan, ceiling fan rough-in, or whole house fan may
be provided for bedrooms and the largest habitable space that is not used as a
bedroom."
40) A new subsection R404.3 is added to the International Energy Conservation Code to
read as follows:
R404.3 Electrical vehicle charger power. An electrical rough-in of a 30 amp
circuit for future electrical vehicle charger may be installed in garage/carport area."
41) TABLE 405.5.2(1) of the International Energy Conservation Code is amended to read
as follows:
TABLE R405.5.2(1)
SPECIFICATIONS FOR THE STANDARD REFERENCE AND
PROPOSED DESIGNS
BUILDING STANDARD REFERENCE DESIGN PROPOSED
COMPONENT DESIGN
Type: mass wall if proposed wall is mass; otherwise As proposedwoodframe
Above-grade walls
Gross area: same as proposed As proposed
U-factor: asspecified in Table R402.1.4 As proposed
Solar abso tance=0.75 As proposed
Emittance=0.90 As proposed
Type: same as proposed As proposed
Basement and crawl Gross area: same as proposed As proposed
space walls U-factor: from Table R402.1.4,with insulation layer on As proposedinteriorsideofwalls
Type: wood frame As ro osed
Above-grade floors Gross area: same as proposed As proposed
U-factor: asspecified in Table R402.1.4 As proposed
Type: wood frame As proposed
Ceilings Gross area: same as proposed As proposed
U-factor: asspecified in Table R402.1.4 As proposed
21
Type: composition shingle on wood sheathing As proposed
Roofs Gross area: same as proposed As proposed
Solar abso Lance=0.75 As proposed
Emittance=0.90 As proposed
Attics' Type: vented with aperture= 1 ft'per 300 ft'ceiling As proposed
area
Type: same as proposed As proposed
Foundations Foundation wall area above and below grade and soil As proposed
characteristics: same as proposed
Area: 40 ft' As proposed
Opaque doors Orientation: North As proposed
U-factor: same as fenestration from Table R402.1.4 As proposed
Total area'_
a) The proposed glazing area,where the proposed
glazing area is less than 15 percent ofthe
conditioned floor area As proposed
b) 15 percent of the conditioned floor area, where the
proposed glazing area is 15 percent or more of the
conditioned floor area
Orientation: equally distributed to four cardinalVerticalfenestration
compass orientations ,E, S & As proposed
other than opaque doors U-factor: asspecified in Table R402.1.4 As proposed
SHGC: as specified in Table R402.1.2 except that for
climates with no requirement(NR) SHGC=0.40 shall As proposed
be used.
Interior shade fraction: 0.92-(0.21 x SHGC for the 0.92-(0.21 x
standard reference design) SHGC as
proposed)
External shading: none As proposed
Skylights None As proposed
Thermally isolated None As proposed
sunrooms
For residences that
are not tested,the
Air leakage rate of 5 air changes per hour in climate same air leakage
zones 1 and 2, and 3 air changes per hour in climate rate as the standard
zones 3 through 8 at a pressure of 0.2 inches w.g(50 reference design.
Pa). The mechanical ventilation rate shall be in addition For tested
to the air leakage rate and the same as in the proposed residences,the
Air exchange rate design, but no greater than 0.01 X CFA +7.5 x (Nb,.+ 1) measured air
where: exchange ratea.
CFA =conditioned floor area The mechanical
Nb,,=number of bedrooms ventilation rate
Energy recovery shall not be assumed for mechanical shall be in addition
ventilation. to the air leakage
rate and shall be as
proposed.
22
None, except where mechanical ventilation is specified
by the proposed design, in which case:
Annual vent fan energy use:
Mechanical ventilation kWh/yr=0.03942 x CF-4+29.565 x (Nb,+ 1)As proposed
where:
CFA =conditioned floor area
Nb,=number ofbedrooms
Internal gains
lGain= 17,900+23.8 x CFA+4104 x Nb, (Btu/day per Same as standard
dwellingunit) reference design
Same as standard
reference design,
plus any additional
mass specifically
Internal mass
An internal mass for furniture and contents of 8 pounds designed as a
per square foot of floor area thermal storage
element'but not
integral to the
building envelope
or structure.
For masonry floor slabs, 80 percent of floor area
covered by R-2 carpet and pad, and 20 percent of floor As proposed
directly exposed to room air.
Structural mass For masonry basement walls, as proposed,but with
insulation required by Table 8402.1.4 located on the As proposed
interior side ofthe walls
For other walls,for ceilings,floors, and interior walls,
wood frame construction
As proposed
As proposed f-q-r-ether-than eleetfie healing-v4thout-a
ia.aNuiiap, whefe the pfopesed design utilizes eleetfie
hefftifig,ys,ithout a heat pump the standafd fefefeflee As proposed]
design shall be an aif settfee heat ptimp meeting the
ts of Seetion 0403 of the!EGG Comnaefeia4
Heating systemsd,e Fuel type: same as proposed design. As proposed
Efficiencies: As proposed
Electric: Air-source heat pump with prevailing federal
minimum standards.
Nonelectric furnaces: natural gas furnace with As propose
prevailing federal minimum standards.
Nonelectric boilers: natural gas boiler with prevailing As propose
federal minimum standards.
Ca aci : sized in accordance with Section R403.7. As pronosed
23
As pfoposed]
Fuel type: Electric
Cooling systemsd,f Efficiency: in accordance with prevailing federal As proposed
minimum standards.
Capacity: sized in accordance with Section 8403.7. As proposed
As pfepesed] A-sj ed]
Fuel type: same as proposed design As propose
Service water heatingd, Efficiency: in accordance with prevailing federal As proposed
g minimum standards.
Use: Same as proposed design gal/day=30+
I
10x&
Duct insulation: From Section 8403.2.1
As tested or as
A thermal distribution system efficiency(DSE)of 0.88 specified in Table
Thermal distribution shall be applied to both the heating and cooling system R405.5.2(2)if not
systems
efficiencies for all systems other than tested duct tested. Duct
systems. For tested duct systems,the leakage rate shall insulation shall bebe4cfm(113.3 L/min)per 100 ft' (9.29 M2) Of
as proposed.
conditionedfloor area at a pressure ofdifferential of 0.1
inches w.g (25 Pa).
Thermostat Type: Manual,cooling temperature setpoint=75°F; Same as standard
Heating temperature setpoint=72°F reference
For SL I square foot=0.93 M2, I British thermal unit= 1055 J, I pound per square foot=4.88 kg/ml,
I gallon(US)=3.785 L, 'C=('F-32)/1,8, I degree=0.79 rad.
a. Where required by the code official,testing shall be conducted by an approved party. Hourly calculations
as specified in the ASHRAE Handbook ofFundamentals,or the equivalent shall be used to determine the
energy loads resulting from infiltration.
b. The combined air exchange rate for infiltration and mechanical ventilation shall be determined in
accordance with Equation 43 of 2001 ASHRAE Handbook ofFundamentals,page 26.24 and the"Whole-
house Ventilation"provisions of 2001 ASHRAE Handbook offundamentals,page 26.19 for intermittent
mechanical ventilation.
c. Thermal storage element shall mean a component not part ofthe floors,walls or ceilings that is part of a
passive solar system,and that provides thermal storage such as enclosed water columns,rock beds,or
phase-change containers.A thermal storage element must be in the same room as fenestration that faces
within 15 degrees(0.26 rad)of true south,or must be connected to such a room with pipes or ducts that
allow the element to be actively charged.
d. For a proposed design with multiple heating,cooling or water heating systems using different fuel types,
the applicable standard reference design system capacities and fuel types shall be weighted in accordance
with their respective loads as calculated by accepted engineering practice for each equipment and fuel type
present.
e. For a proposed design without a proposed heating system,a heating system with the prevailing federal
minimum efficiency shall be assumed for both the standard reference design and proposed design.
f. For a proposed design home without a proposed cooling system, an electric air conditioner with the
prevailing federal minimum efficiency shall be assumed for both the standard reference design and the
proposed design.
g. For a proposed design with a nonstorage-type water heater,a 40-gallon storage-type water beater with the
prevailing federal minimum energy factor for the same fuel as the predominant heating fuel type shall be
assumed. For the case of a proposed design without a proposed water heater, a 40-gallon storage-type
water heater with the prevailing federal minimum efficiency for the same fuel as the predominant heating
fuel type shall be assumed for both the proposed design and standard reference design.
h. For residences with conditioned basements,R-2 and R-4 residences and townhouses,the following formula
shall be used to determine glazing area:
24
AF=ASxFAxF
where:
AF=Total glazing area
As =Standard reference design total glazing area.
FA=(Above-grade thermal boundary gross wall area)/(above-grade boundary wall area+0.5 x below-
grade boundary wall area).
F=(Above-grade thermal boundary wall area)/(above-grade thermal boundary wall area+common wall
area)or 0.56,whichever is greater.
and where:
Thermal boundary wall is any wall that separates conditioned space from unconditioned space or ambient
conditions.
Above-grade thermal boundary wall is any thermal boundary wall component not in contact with soil.
Below-grade boundary wall is any thermal boundary wall in soil contact.
Common wall area is the area of walls shared with an adjoining dwelling unit.
L and CFA are in the same units.
i. Unvented Attic Spaces.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
3) Minimize energy consumption for air conditioning or ventilation by maintaining satisfactory space
conditions in both the attic and occupied space below."
42) A new section R407 is added to the International Energy Conservation Code to read
as follows:
SECTION R407
POINTS OPTION
R407.1 General (Prescriptive). Above-grade walls and roofs are permitted to
comply with the points option as an alternative to complying;with Sections R401.2.1
R402.1.2 and R402.2.
R407.2 Requirements. One or more efficiency measures shall be selected for roof
and above-grade wall systems from Table R407.1 that cumulatively qual or exceed 0
zero)points. As an alternative, above-grade walls and roofs are permitted to comply
separatelyby scoring 0 (zero) orreg ater.
25
TABLE R407.1
POINTS OPTION
Standard Tropical
Home Home
Points Points
Wood Framed
R-19 RoofInsulation 1 0
R-19 RoofInsulation+ Cool roof 0 l
Roof Insulation membrane' or Radiant Barrier
Must choose l) R-19 Roof Insulation+Attic 0 1
Ventin 2
R-30 Roof Insulation 0 1
R-13 Cavijy Wall Insulation 0 1
R-13 Wall Insulation+high 1 2
Wall Insulation reflectance walls
Must choose 1) R-13 Wall Insulation+ 90%high 1 2
efficacy lighting and Energy Star
Appliances5
R-13 Wall Insulation+ exterior 1 2
shading X0.36
Ductless Air Conditioner? 1 1
1.071 X Federal Minimum SEER 1 1
Mechanical/Electrical Systems for Air Conditioner
Choose ONLY if applies to 1.142 X Federal Minimum SEER 2 2
scope of works for Air Conditioner
No air conditioning installed Not 2
Applicable
Must choose if applies to new House floor area< 1,000 SF 1 1
Construction and/or Additions House floor area>2,500 SF 1 1
House floor area to be considered Energy Star Fans- I 1
as existing dwelling size Mus new Install 1 kW or greater of solar 1 1
square footage) electric
Reduce fenestration from 14%to Not 1
10% Applicable
26
Metal Framed
R-13 +R 3 Wall Insulation 0 1
R-13 caviy Wall Insulation+R-0 1 0
Wall Insulation R-13 Wall Insulation+high 0 1
Must choose 1) reflectance walls
R-13 Wall Insulation+ 90%hiyh 1 2
efficaclighting and Energy
Appliances'
R-13 Wall Insulation+ exterior 0 1
shadin w f=0.36
R-30 Roof Insulation 0 1
R-19 Roof Insulation 1 0
Roof Insulation R-19 +Cool roof membranes or 0 1
Must choose l) Radiant Barrier3
R-19 Roof Insulation+Attic 0 1
Venting2
Ductless Air Conditioner? 1 1
1.071 X Federal Minimum SEER 1 1
Mechanical/Electrical Systems for Air Conditioner
Choose ONLY if applies to 1.142 X Federal Minimum SEER 2 2
scope of work) for Air Conditioner
No air conditioning installed Not 2
A licable
Douse floor area< 1,000 SF 1 1
Must choose if applies to new House floor area>2,500 SF 1 1
construction and/or additions Energy Star Fans? 1 1
shouse floor area to be considered Install 1 kW or greater of solar I 1
as existing dwelling; size plus new electric
square footage) Reduce fenestration from 14%to Not 1
10% A licable
SF=Square Feet
1 Cool roof with three-year aged solar reflectance of 0.55 and 3-year aged thermal emittance of 0.75 or 3-Year
aged solar reflectance index of 64_
2 One cfrn/ft2 attic venting.
3 Radiant barrier shall have an emissivi1y of no greater than 0.05 as tested in accordance with ASTM E-408.The
radiant barrier shall be installed in accordance with the manufacturer's installation instructions.
4 Walls with covering with a reflectance of>0.64.
5 Energy Star rated appliances include refrigerators,dishwashers,and clothes washers and must be installed for
the final inspection.
6 The wall projection factor is equal to the horizontal distance from the surface of the wall to the farthest most
point ofthe overhang divided by the vertical distance from the first floor level to the bottom most point ofthe
overhang.
7 All air conditioning systems in the house must be ductless to qualify for this credit.
8 Install ceiling fans in all bedrooms and the largest habitable space that is not used as a bedroom."
27
43) Subsection R501.4 ofthe International Energy Conservation Code is amended to read
as follows:
R501.4 Compliance.Alterations, repairs, additions and changes of occupancy to, or
relocation of, existing buildings and structures shall comply with the provisions and
regulations for alterations, repairs, additions and changes of occupancy or relocation,
respeetively, in the Residential Code, International Buikhng Code,
International F4re Code, Mternational Fuel Gas Code,Mternational Akehaniea
Code,biternational Plumbing Code, International Property Amint-eHaHee Code,
International Private Se f,qge &spos-al Code and NFPA 70] as adopted by the code
official."
44) Subsection R502.1. of the International Energy Conservation Code is amended to
read as follows:
R502.1 General. Additions to an existing building, building system or portion
thereof shall conform to the provisions of this code as those provisions relate to new
construction without requiring the unaltered portion of the existing building or
building system to comply with this code. Additions shall not create an unsafe or
hazardous condition or overload existing building systems. An addition shall be
deemed to comply with this code where the addition alone complies, where the
existing building and addition comply with this code as a single building, or where
the building with the addition uses no more energy than the existing building.
Additions shall be in accordance with Section R502.1.1 or R502.1.2.
Exceptions:
1. When addition includes unconditioned space that does not contain
habitable space.
2. When both the existing;building and addition are entirely comprised o
habitable unconditioned space iftotal square footage does not increase
more than 1,100 square feet."
45) Subsection R503.1.1 of the International Energy Conservation Code is amended to
read as follows:
R.503.1.1 Building envelope. Building envelope assemblies that are part of the
alteration shall comply with Section R402.1.2 or R402.1.4, Sections R402.2.1
through R402.2.13, R402.3.1, R402.3.2, 8402.4.3 and R402.4.4.
Exception: The following alterations need not comply with the requirements for
new construction provided the energy use of the building is not increased:
1. Storm windows installed over existing fenestration.
2. Existing ceiling, wall or floor cavities exposed during construction
provided that these cavities are filled with insulation.
28
3. Construction where the existing roof, wall or floor cavity is not exposed.
4. Roof recover.
5. [Roofs withot4 insulation iii 4ie ewvity and where the sheathing-er
below the sheathing.] Roof replacement of uninsulated roofs which
include at least one of the following:
a. Energy Star compliant roof covering
b. Radiant barrier; or
c. Attic ventilation via solar attic fans or ridge ventilation or gable
ventilation.
6. Surface-applied window film installed on existing single pane fenestration
assemblies to reduce solar heat gain provided the code does not require the
glazing or fenestration assembly to be replaced."
46) Subsection R503.2 of the International Energy Conservation Code is amended to read
as follows:
R503.2 Change in space conditioning.
Any nonconditioned or low-energy space that is altered to become conditioned space
shall be required to be brought into full compliance with this code.
Exception] Exceptions:
1. Where the simulated performance option in Section R405 is used to comply
with this section, the annual energy cost of the proposed design is permitted
to be 110 percent of the annual energy cost otherwise allowed by Section
R405.3.
2. When specified in the tropical zone, and the total conditioned space does not
exceed 50% of the habitable floor area and R-19 is installed over the
conditioned space, and Split ductless air conditioner systems with a SEER
rating in the top 25% of readily available units are installed."
SECTION 3. The amendments to the "International Energy Conservation Code,2015
Edition" set forth in this ordinance, are indicated through the use of Ramseyer 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 4. 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.
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SECTION S. 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 6. 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 7. 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.
AINTRODUCED BY:K'J"U'-"'"
COUN L MEMBER, CO HAWAII
Hawaii
Date of Introduction:
Date of I st Reading:
Date of 2nd Reading:
Effective Date:
REFEENCE Corm. 646
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