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HomeMy WebLinkAboutORD 1960-034COUNTY OF HAWAII - STATE OF HAWAII ORDINANCE NO. 34 AN ORDINANCE RELATING TO THE CONSTRUCTION AND MAINTENANCE OF SIDEWALKS IN THE CITY OF HILO, COUNTY OH' HAWAII, STATE OF HAWAII. BE IT ORDAINED BY THE BOARD OF SUYEKVISORS OF THE COUNTY OF HAWAII: Curbing Section 1. That every owner of land abutting on or adjoining any public highway or street in the City of Hilo, County of Hawaii, State of Hawaii, upon being required by the Board of Supervisors of the County of Hawaii, and being notiLi.ed of such reyuiremen±, as lrereir. provided, shall curb the sidewalk adjacent ?;c> >uch land, on the established lines, with substant-ial curbing of stone or concrete, which curbing shall conform to tine following specifications.: Specifications Stone Curbing: The curb stones shall be of a good quality lava rock, or be of cast concrete, in rectangular blocks of which not less than fifty (50) per centum shall be at least thirty-six (36) inches in length, and the remaining fifty (SU) per centum shall be at least thirty (30) inches in length, except for proper closure pieces, and shall not be less than sixteen (16) inches in depth, and of a matched width of six (6) inches on top with an upward bevel from the face of one-eight (1/8) inch in the six (6) inches. The top of natural lava stone curbing shall be axed hammer dressed to a smooth surface. The face of natural stone curbing shall be wind and brush hammer dressed to a depth of ten (10) inches below the top. The remainder of the face shall be point dressed. The back shall be point dressed to a uniform thickness of six (6) inches for at least three (3) inches from the top and shall be free of projections of more than two (2) inches. The ends must be square with the top and permit of a joint not exceeding one-half (2) inch for the full thickness of the stone to a depth of at least 10 inches from the top. Blocks shall be well bedded, set true to line and grade and the joints between blocks filled with a cement grout composed of one part cement to two parts sand and the mixture to be darkened with lamp black. _ tl At street intersections when the curb 's carried around on Oc.d. ~10 . .............................r a curve the radius of such a curve shall b tt~t of the lesser sidewalk width. File o. _ ................._-...... yA. B. No. ---•-'-------•--------------- Date: .-....-..^---.__--- ----'...-. Concrete Curbing; Concrete curb shall be constructed of concrete of net less than 1;2~: 5 mix, as hereinafter specified for the base course of concrete sidewalks and shall be of the same dimensions as specified for natural stone curbing, and all exposed surfaces shall show a smooth finish. All curbing laid under provisions of this Ordinance shall be set true to the established lines and grades and shall be laid, jointed and set in a good, substantial, workmanlike manner. Section 2. Back Filling, Sub-grade and Retaining Walls: That every owner of land abutting on and adjoining any public highway or street in the City of Hilo, after curbing has been laid, as hereinbefore provided for, upon being required by the Board of Supervisors of the County of Hawaii, and being notified of such requirement, as hereinafter provided, shall back fill, sub-grade and retain same in the space between the established sidewalk lines adjacent to such land. Sub-Grade, Depth Below Grade of Walk' Slope; When sub-base is required, the sub-grade shall not be less than twelve and three-quarter (12 3/L}) inches below the finished surface of the walk and shall have a slope toward the curb of not less than. one-half (~-) inch per foot. Depth of Layers; All soft or spongy places shall be dug out and all depressions filled with suitable filling material, which shall be thoroughly compacted by flooding with water and tamping in layers not exceeding six (6) inches in thickness. Deep Fills; When, to bring the walk to grade, a fill exceeding one (1) foot in thickness is required, it shall be made in a manner satisfactory to the engineer and inspector. The top of all fills shall extend beyond the sidewalk line at least two (2) feet and shall have a slope of not less than 1Z;1. After completion to grade the f+tl shall be allowed to settle for a period of not less than ten (10) days and no concrete for sidewalk shall be placed on same until permission has been obtained from the engineer and inspector. Drainage; When required by the engineer and inspector a suitable drainage system shall be installed and connected with gutter or sewer drains. In side hill section, where sell waters are encountered and at driveways or other crossings a trench twelve (12) inches by twelve (12) inches, immediately below the sub-base, in which shall be laid a four (1i) inch t he surrounded by material similar to that used in the foundation shall be provided for a satis- factory drain. Broken stone drains of one (1) square foot end area shall be provided every twenty-five (25) feet. Retaining Walls; In all cases where the fill under the sidewalk along the property is two (2) feet or more above the adjoining property, such fill shall be properly retained by -2- o. a. r; ~. -- -- ~ ~ ----------•--~ Filo LIo. -.-...-------- M. II. No. -------~-----------°--- n..~-. i means of a substantial, tight retaining wall constructed of stone laid and bedded in cement and lime mortar or of concrete. The design of such retaining walls shall be subject to the approval of the engineer and inspector, and furthermore, they may ore9er the construction of a retaining wall across either or both ends of such walk where, in their discretion, the height of fill demands such construction. Section 3. Sidewalks. That every owner of land abutting on or adjoining any public highway or street in the City of Hilo, upon being required by the Board of Supervisors of the County of Hawaii and being notified of such requirement, as hereinafter provided, shall curb, as provided in Section i hereof, and grade, as provided in Section 2 hereof, and shall con- struct and maintain in good condition between the establishE;d sidewalk lines a sidewalk on such highway or street adjacent, to such property to conform to the following specifications; SPECIFICATIONS Portland Cement: The cement shall conform in every detail to the Standard Specifications of Portland Cement adopted by the American Society for Testing Materials. The unit of measure for cement shall be the bag received from the manufacturers, having a gross weight of not less than ninety-five (y 5) pounds or a net weight of not less than ninety-four (9t~) pounds. Such a packed, unopened bay shall be considered as equal to one cubic foot of cement, and one cubic foot of cement shall weigh not less than ninety-four (y4) pounds. A packed barrel of cement shall weigh not less than three hundred and seventy-six (370) pounds, net, and shall be con- sidered equivalent to four (1•) bags of cement, or four (){) cubic feet. Sand: The sand shall pass a No. )# screen of which not more than forty (1i0) per centum may be retained on a No. 10 screen and shall be free frem ali foreign matter, excepting loam or clay which will be permitted if the quantity does not exceed five (j) per centum and when these ingredients do not occur as a coating on the sand grains. Stone and Rock. Stone shall be crushed from clean, sound, hard, durable lava rocks and shall be screened dry through a two (2) inch ring and be retained on a quarter (~) inch mesh. Screenings through a quarter (~) inch mesh, from the crushed stone above specified, may be substituted for sand if approved by the engineer and inspector. The same shall be clean, dry, well graded, and free from excessive dust which shall not occur as a coating on the particles of stone. River Gravel: Gravel shall be clean and hard and shall vary in size from that retained on a quarter (~) inch mesh to the largest particles passing a one and a quarter (1~) inch mesh. -3- Ocd. Ne. __._..__. ~_. / .............. M. B. 1~l0. Pate: Unscreened Gravel: Unscreened gravel shall be clean and hard, and shall contain no particles larger than one and a quarter (1~) inches. The proportion of fine and coarse particie:s must be determined and corrected to agree with the requirements hereinafter specified for Concrete in Base and Proportioning Foundation; When a sub-base is required, only clean, hard cinders, slag lava, gravel, crushed stone or broken brick shall be used. The material shall not be smaller than one-half (~) inch or exceed four (~) inches in the largest dimension. Water; Water shall be reasonably clean, practically free from any oil, acid, salines and other deteriorating substances. PAVEMENT: The pavement shall be artificial stoneflagginy composed of cement concrete, constructed in alternate slabs in place not over three (3) feet in width. It shall consist of two (2) parts; First, a base course three and a half (jz) inches thick; second, a finishing or wearing course three-quarters (?/L~) of an inch thick. Grade: Unless otherwise especially provided for, the finished surface shall be a true plane rising from the curb grade at the curb line at the rate of one-fourth (~q) inch to one (1} foot to the property line. Preparing Sub-Grade; The space to be occupied by the walk shall be properly graded to a depth of four and a quarter (l,~) inches below top of finished walk, Any soft, loose or unsuitable material found in the sub-grade shall be removed and the space filled with fine broken stone, cinders, or other foundation material before mentioned, after which the whole surface shall be thoroughly compacted by ramming or rolling and finished to required grade and cross section. Forms: When wooden f'orrns are used, they shall be free from warp and not less than one and a half (lZ) inches thick, except bends for curved curbs. All mortar and dirt shall be removed from forms before being used. Setting; The forms shall be well staked to the line and grades given by the engineer, and their upper edges shall conform with finished grade of the walk which shall have suf- ficient rise from the curb to provide the proper drainage of one quarter (4) inch per foot except where such rise shall parallel the length of the walk. Cross Forms: At each slab division cross forms shall be put in the full width of the walk and at right angles to the side forms. Site of Slabs: Cross forms shall be spaced three (?,) feet apart, and in turning corners no slab shall contain more than thirty-six (3~) square feet. Expansion Joint: A metal parting strip one-half (~) inch thick shall take the place of the cross forms at least -4 - Ocd. No. .._.-.~--~ ............... File No. __--------.-...--'---~--^_ M. B. No. ° ----°-- -- Pate:..--.-. once every fifty (50) lineal feet on long stretches of walk. When the walk has become sufficiently hard, this parting strip shall be removed and the joint filled with suitable material prior to opening the walk to traffic. Similar joints shall be provided where new walk abuts curbing or other cement or stone walk. Forms, Wet; All forms shall be thoroughly wetted before any material is deposited against them. Base Course: The concrete for the base course shall be composed of 1;2~; 5 mixture, consisting of three (5) parts of clean, crushed blue-lava rock of a size not larger than will pass through a two (2) inch rin , and not smaller than will be retained by a three-fourths (3/~j) inch ring; two (?_) parts crushed blue lava-rock of a size that will pass through a thr•ee- fourths (3/~) inch ring, and not smaller than will be retained by a one-fourth (y) inch ring; two and a half (2~) parts of clean, sharp sand; and one (1) part Portland Cement. Sufficient water shall be added to make a plastic mixture which shall be immediately deposited in place in such a manner that the larger 'st.ones shall not become separated from the grout, and •s hall be thoroughly rammed until the water flushes to the top. Proportioning: When the voids are to be determined, the concrete shall be so proportioned that the cement shall overfill the voids in the stone by at least five (5) per centum, and the mortar shall overfill the voids in the stone or grout by at least ten (10) per centum. The following method shall be used to determine voids in sand; Fill a vessel with sand and let net weight of sand equal B; fill same vessel with water and let net weight of water equal A. Formula; (A x 2.05) -- B 100 Per cen. Voids A x 2.05 The following method shall be used to determine voids in crushed stone and aggregate; Fill a vessel level full with water and let net weight of the water equal C; remove the water, dry the vessel and fill it with aggregate and let net weight of the aggregate equal B; add water slowly until it just appears on the surface and weight of the aggregate and water equal A. Formula; A--B--100 Per Cent. Voids C The vessel to be used for above results shall not be less than one (1) cubic foot capacity. Mixing; The material used in the concrete for base course must be proportioned by exact measurement, and for this purpose contractors will be required to provide themselves with rectangular boxes for measuring materials and water-tight platform for mixing. No mixing of materials on pavements will be permitted. - 5- Ord. No. .----' ~~ ~ ............... Fila too.."---------- ................ M. B. too. °------ Date:.___...___. When the measuring box is removed, the materials shall be thoroughly mixed dry to a uniform color until no streaks of cement are visible; they shall be formed into a crater or trench and practically all the water required shall be added at one time and the mass turned until a homogeneous mortar of even consistency is obtained. Water may be added during the process of mixing but the concrete shall be turned at least once immediately after its addition. Machine Mixing; Machine mixing will be acceptable when a concrete equivalent to quality specified is obtained. The mixing of ail mortar and concrete shall be thorough and satisfactory to the engineer and inspector. Retempering; Retempering will not be permitted. Depositing; The concrete shall be deposited before it shows any tendency to harden, but in all cases the same shall be deposited within thirty (30) minutes after being mixed, and shall be transferred to the forms in water-tight wheelbarrows. The wheelbarrows shall not be filled so full as to permit mortar to slop out, and shall net be run over the fresh laid concrete. Care of Base; 'Workmen shall not be permitted to walk on freshly laid concrete, and where sand or dust gets on the base it shall be carefully removed before the wearing course is applied. Wearing Course: Immediately after the base course has been deposited and thoroughly rammed, and before it becomes set, while it is still soft and adhesive, a finishing course, three-fourths (3/~) inch thick, consisting of mixture of one (1) part screen sand, one (1) part Portland Cement and portioned two (2) pounds of lamp black to each barrel of cement, sufficiently wet for proper working, shall be deposited and brought to a true and even surface, thoroughly worked and skillfully troweled to a smooth and uniform finish surface. Slab Marking; After working the top to a true surface the slab marking shall be made directly over the joints in the base with a tool which shall cut clear through to the, base and completely separate the wearing courses of adjacent slabs.. This tool shall be followed by a tool forming a grove at least one- half (z) inch deep. The marking of various width sidewalks shall be as directed by the engineer and inspector. Edge Rounding: The slabs shall be rounded on all surface edges to a radius of about one-half (~) inch and when surface is partially set it shall be troweled smooth, and the finished surface shall then be protected from the direct rays of the sun and kept moist for at least three (j) days before being opened to the public. Roughened Surfaces; On grades exceeding four (1}) per centum, the surface shall be roughened. 'When a roughened surface by the use of a grooving tool, trowel or other suitable tool, screenings into the surface. is required, it may be obtained toothed roller, brush wooden or by working coarse sand or o~~t. rro. 3 File tr u....--'-----------'-'-'- -~- ._-.. M. B. 1J o. _..-.-.._---... Aat,,: --•- --- - Driveways: Wherever driveways occur, concrete shall not be less than eight (8) inches in thickness and the surface shall be finished with sufficient longitudinal grooves or corrugations to provide a safe foot-hold for animals. Stone paving, not less than eight (8) inches thick, set in cement grout of approved construction may be substituted for concrete in driveways. Walks Laid Over Vaults, Areaways, etc. (a) Substructure, Beam Work; The substructure shall consist of steel L beams set not more than five (5) feet apart from center to center, the outer end of said beams to rest at least eight (8) inches on the curb wall and to be firmly bedded in masonry to the top of flange of same. Where practicable the inner erd of said beam shall penetrate the building wall not less than six (o) inches. The top of the completed iron substructure shall be a plane parallel four (1}) inches below the top of the finished walk. The following sized steel cross-beams shall be used in constructicn: For ten (10) foot span, eight (8) inch beams weighing seventeen and three-quarter (1? 3/!~) pounds per foot. For twelve (lc) foot span, nine (y) inch beams weighing twenty-five (2 j) pounds per foot. (b) Concreting: Between the beams set in place as abo~.ie specified, and securely fastened to the lower flange ~:t s-.rne, shall be placed temporarily, arched forms er centers, smooth. on the upper surface, which shall be removed when the concrete has become thoroughly set. Said forms to be so set that the top or crown of same shall be two (2) inches below the top of the steel cross beams. Section tl. 4Jhenever the Board of Supervisors of the County of Hawaii shall deem it proper or necessary that any sidewalk or sidewalks shall be curbed or curbed and constructed as hereinbefore provided, it shall, by resolution, designate a location or area of sidewalk construction which location or area shall not be less in extent than one side of a street or highway between two inters~ting cross streets. The resolution shall also contain a provision requiring the owner or owners of the land abutting on and adjoining any public street or highway along which said sidewalk is to be so constructed within such location or area, to curb or curb and construct, the same as provided herein, and the said Board of Supervisors of the County of Hawaii, after so requiring the owner or owners of any land abutting on and adjoining any public street or highway to lay any curbing, or to curb and construct anyy sidewalk. as required herein and as provided by Chapter llj2 of the Revised Laws of Hawaii 1955 shall cause a written notice to be given such owner or owners or his or their duly authorized agent or agents of such requirement such notice to be substantially in the following form; ~/ NOTICE TO .........................>.... ................................ You are hereby notified that Supervisors of the County of Hawaii, on the __ day of a resolution was adopted by the said to curb and construct and maintain a lines abutting on and adjoining your Street, between Streets, in the City of Hilo, County in accordance with the provisions of Laws of Hawaii 1955 and the Ordinance at a meeting of the Board of State of Hawaii, duly held _ A. D, 19 , Board that you be required sidewalk upon the established property on and _ _ of Hawaii, State of Hawaii, Chapter 142 of the Revised >s of the County of Hawaii. You are further notified that if you fail to comply with such direction for sixty days after this notice, the County of Hawaii will proceed to construct such sidewalk at your expense as provided by law. BOARD OF SUPERVISORS COUNTY OF HAWAII STATE OF HAWAII By Clerk Dated this day of 19 Section 5. Care of sidewalks. All owners of lands abutting on and adjoining any public streets after curbing has been laid, shall, at their own expense, keep their sidewalks clean and free of all weeds, noxious growths or other vegetable matter; provided, however, should the owners have grass grown thereon they shall keep same cut so same shall not be a nuisance or inconvenience to the public passing thereon. Any person, firm or corporation who shall be convicted of violating any of the provisions of this Section shall be fined not more than One Hundred Dollars. Os.l. I: o. _...___~.~ ............._ -8- File l.u. ----'-----'--...--.'.... Hate :...................................... A,D