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HomeMy WebLinkAbout16772 ORD - 12/23/1981ORDINANCE AMENDING THE BUILDING CODE OF THE CITY OF CORPUS CHRISTI, ADOPTED BY ORDINANCE NO. 15256 PASSED AND APPROVED BY THE CITY COUNCIL ON DECEMBER 17, 1979, ESTABLISHING A MINIMUM FIRST FLOOR ELEVATION RE- QUIREMENT ABOVE MEAN TIDE LEVEL AND SUPPLEMENTAL WINDSTORM RESISTANT CONSTRUCTION REQUIREt4ENTS IN THOSE DEVELOPED AREAS LOCATED SEAWARD OF THE INTRA - COASTAL CANAL; PROVIDING FOR PUBLICATION BY NOTICE; AND PROVIDING A SAVING CLAUSE. BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF CORPUS CHRISTI, TEXAS: SECTION 1. The Building Code of the City of Corpus Christi, adopted by Ordinance No. 15256 passed and approved by the City Council on December 12, 1979, is hereby amended as follows: a. Chapter XXXIII - MINIMUM ELEVATION ABOVE MEAN TIDE LEVEL FOR STRUCTURES is hereby amended by amending Section 3302 thereof to hereafter read as follows: 3302 - Residential Buildings All buildings classified as Group "R" - Residential Occupancy and all occupied mobile homes shall have a minimum first floor elevation of twelve (12) feet above mean tide level as established by the U.S. Coast and Geodetic Survey Bench Mirk Datum, except in those areas specified by Figure 3302.1, where the minimum elevation shall be thirteen (13) feet, fourteen (14) feet, fifteen (15) feet, sixteen (16) feet, or seventeen (17) feet as Ind:ated, and except in those developed areas seaward of the Intracoastal Canal where the minimum elevation shall be nine (9) feet. b. Appendix "S" - Supplemental [windstorm Resistant Construction Requirements is made a part of this code, and said Appendix "S" is set forth to read as follows: Appendix "S" - SUPPLEMENTAL WINDSTORMRESISTANT CONSTRUCTION REQUIREMENTS Section S-100 - GENERAL These supplemental requirements apply to construction in those developed areas located seaward of the Intracoastal Canal -and reflect the criteria for windstorm resistant construction set forth by the Texas' Catastrophe Property Insurance Association. The design wind load shall be 120 mph as set forth in Section 1205. 16772 SEP 2 81984 MICROFILMED Section S-200 - ANCHORAGE 201. Heavy timber construction (as defined in Texas C.B.S.). Every roof girder and every roof beam shall be anchored to an exterior or interior wall or to a properly designed interior column. Walls bears and plates shall be anchored to the wall with approved type anchors not more than 4 feet apart. Roof planking where supported by a wall shall be anchored to such wall at intervals not exceeding 4 feet. Roof trusses shall be securely anchored to masonry walls at points of bearing. tioaitor and saw tooth construction shall be anchored to the main roof construction. Anchors shall consist of steel or iron bolts or scraps of sufficient strength and ample anchorage to resist verti- cal uplift of the roof as required. 202. Ordinary construction (masonry). a. All trimmers and at least one beam or joist in every 4 feet resting on masonry walls, shall be secured to such walls by approved metal anchors at- tached at or near the bottom in a manner to be self -releasing. Each end of a trimmer, beam or joist that is supported by a girder shall be secured or tied in an approved manner to such girder or to a trimmer, beam or joist correspond- ingly supported from the opposite side of such girder. Anchors and ties shall be so arranged as to form continuous ties between opposite masonry walls. b. Where floor or roof joists or beams run parallel to masonry walls, such walls shall be secured to 4 or more joists of the floor or roof construc- tion by approved metal anchors at maximum intervals of 8 feet for dwellings, and 5 feat in other buildings. .e. Wall plates and roof construction shall be anchored to the walls at least every 6 feet, except that wall plates and roof construction shall be an- chored at intervals of 4 feet to hollow concrete masonry walls which do not have cast -in-place reinforced concrete tie beams. d. Wooden girders shall be anchored to the walls and fastened to each other with suitable steel straps placed near the bottom of the girder. . e. At least every third rafter shall be anchored to the ceiling joists or partitions directly beneath by not less than the equivalent of 1-x 6 -inch boards securely nailed. Such braces shall be attached to the rafters at their mid points or at the third points if two are used per rafter. In peaked roofs opposite rafters shall be laterally braced to each other at the ridge in a manner satisfactory to the building official. f. Roof .trusses shall be securely anchored to masonry walls at points of bearing. g. Anchors shall consist of steel or iron bolts or straps of suffici- ent strength and ample anchorage to resist vertical uplift of the roof as re- quired, , 203. Wood frame construction. a. Sills shall be anchored to the foundation walls to develop a strength equivalent to 1/2 -inch bolts with proper washes embedded t'dnches 1n concrete foundation walls and spaced 6 feet apart. b. Rafters shall be anchored to the wall plate by approved metal anchors attached to at least every other rafter or shall be otherwise anchored in an ap- proved manner. c. In all buildings 20 feet dr more in width where joists run at right angles to the rafters, the rafters shall be tied to the ceiling joists with wood or metal ties nailed to the foot of alternate rafters and extending across 4 joists well nailed to ea_h joist. d. Girders resting on masonry foundation walls or piers shall be anchored thereto with not less than 1/2 -inch bolts embedded at least 6 inches in masonry. e. Wooden col,+mne and posts shall be securely anchored to their founda- tions and to the members which they support. f. At least every third rafter shall be anchored to the ceiling joist or partitions directly beneath by not less than the equivalent of 1- x 6 -inch boards securely nailed. Such braces shall be attached to the rafters at their mid -points or at the third points if two are used par rafter. g. Each rafter shall be laterally braced to the opposite rafter at a point underneath the ridge, in order to form a brace known as the "A" type or "Collar Beam," except that roof construction of the "Exposed Cathedral Type" or "Exposed Shed Type" may have such bracing omitted when the rafters are securely anchored and braced is as approved matner. Roof framing and trussing of all ocher types of roof construction shall be anchored by as approved method. Section S-3Q0 - ROOF COVERING 301. Installation. a, General requirements for all roof coverings. (1) Roof coverings shall be securely attached to the roof in accordance with the manufacturer's instructions and specifications and with the methods ap- proved by the building official. Nails, clips and similar attaching devices shall be galvanized or otherwise suitably corrosion resistant. b. Prepared shingle roof coverings. (1) t: ood roof decks to which.prepared shingles are applied shall be solidly sheathed. Sheathing shall be well seasoned and dry. Sheathing boards shall be at least 1 inch nominal dimension boards not over 6 inches wide. Ply- wood sheathing shall be at least 5/8 of an inch thick. (2) Attic spaces shall be vented with vent openings so placed as to circulate air in all parts of the attic. (3) Nails shall be of sufficient length to extend through the roof deck (sheathing). (4) Thick-butt asphalt shingles shall be nailed in the thick portion of the shingle. (5) All butts or tabs of asphalt shingles shall be securely spotted or tabbed with a plastic, fibrous, asphaltic cement or anchored by clips or locks, and all edges at eaves and gables shall be sat in such cement 3 inches back from the edge. (6) Metal drip edges shall be nailed to the roof deck with nails not less than 10 inches on centers. c. Built-up roof coverings. - (1) For built-up roof coverings cant strips shall be provided at the angle of roof and vertical surfaces. (2) Built-up roof coverings shall be carried at least 6 inches above the Cant strip to a reglet in the parapet and covered with metal flashing calked into the reglet. Reglet may be omitted at parapet walls provided two layers of felt or the equivalent are carried across the top of the parapet under coping and down the parapet to the lower edge of the cant strip. The said layers to run vertically, properly lapped and cemented to the parapet. • (3) All resinous places in the wood roof deck shall be covered with sheathing paper or unsaturated felt. (4) The first layer or anchor sheet shall be not less than 30 -pound felt nailed 6 inches an center along a 2 -inch lap and nailed 12 inches on center both ways,in tha area between laps with tin caps and 1 -inch nails; or shall be not less than two layers of 15 -pound felt lapped 18 inches and nailed through both sheets on 6 -inch centers along the lap and on 12 -inch centers in the area between laps with tin caps and 1 -inch nails; or, where the underside of the roof sheath- ing is to be exposed and'its appearance considered, the first layer shall be not less than a 30 -pound felt or two layers of 15 -pound felt nailed 6 inches on cen- ters along the rafters with tin caps and 1 -1/4 -inch nails, and nailed 12 inches on centers, both ways, between rafters, with tin caps and 3/4 -Inch mails. (5) Each additional sheet above the anchor sheet shall be thoroughly mopped between layers with a bituminous compound so that no layer touches an un - mopped layer. Bituminous compound for mopping plys together shall be air refined asphalt or coal tar pitch but shall not be any type of emulsion, cold or cut back liquid cement, oil or grease. (6) Gravel stop and drip strips, and eave and gable drips shall be not less than No. 26 gauge galvanized metal, 16 ounce copper or 0.024 inch aluminum, With not less than 3 -inch flange on roof and nailed with not less than 3/4 -inch nails spaced not more than 6 inches apart. d. Roll roofing. - (1) Roll roofing shall be applied only over a smooth surface. Roll roofing shall not be applied over shingle roofs. (2) Roll roofing applied in a single layer shall be spot popped and ap- plied by concealed nail -method with a minimum 3 -inch head lap and a minimum 6 -inch end lap properly cemented. Nail spacing shall be not less than 4 inches on centers. (3) Nails that secure roll roofing to the roof deck shall be driven at least 3/4 of an inch from the edge of the sheet. e. Tile Roofing. (1) Tile roofing shall be laid over not less than one layer of 30 -pound asphalt felt securely fastened by nailing with tin caps. (2) All tile shall be thoroughly watered with a hose before application. (3) Every tile shall be laid full length in portland cement mortar and in addition the first three horizontal courses shall be nailed. Under certain conditions additional nailing may be required to prevent the tile from slipping. Mortar shall be not less than one part cement and three parts sand and not more than twenty-five per cent lime by volume. -3- (4) All nails for flashing and tiles shall be copper. f. Corrugated metal roofing, protected metal roofing, corrugated and flat sheet asbestos cement roofing. (1) When roofings of the above types are applied to wood roof decks they shall be secured with drive screws of sufficient length to extend through the roof deck. When applied directly to purlins and other roof members they shall be secured with bolted strap fasteners, bolts or stud fasteners. Properly designed clip fasteners that are approved may be used in accordance with the con— ado-dams of such approval. priva screws at least 4 inches in length may be used to secure these roofless directly to wood purlins. (2) Aluminum roofing when fastened to steel roof structure shall be in— sulated against electrogalvanic action. g. Insulated steel deck roofing. Insulated steel deck shall be secured by spot welding of clips or spot welding the sheets to the steel purlins, or by equivalent means. Section -S-400 — CONSTRUCTION 401. Walls During erection masonry walls shall not be built higher than 10 times their thickness unless adequately braced or uatil provision is made for -the prompt installation of permanent bracing at the floor or roof level immediately above cha story under construction. SECTION 2. This ordinance shall take effect from and after its publi— cation one time in the official publication of the City of Corpus Christi, which publication shall contain the caption stating in summary the purpose of the ordinance and the penalty for violation thereof. SECTION 3. If for any reason any section, paragraph, subdivision, clause, phrase, word, or provision of this ordinance shall be held invalid or unconstitutional by final judgment of a court of competent jurisdiction, it shall not affect any other section, paragraph, subdivision, clause, phrase, word, or provision of this ordinance for it is the definite intent of this City Council that every section, paragraph, subdivision, clause, phrase, word, or provision hereof be given full force and effect for its purpose. _4_ That the foregoing ordinance waread for t first time And passed to its second reading on this the ( day of J2.0. , 19)1/ , by the following vote: rr Luther Jones Betty N. Turner Jack K. Dumphy Bob Gulley Herbert L. Hawkins, Jr. Dr. Charles W. Kennedy Cliff Zarsky That the foregoing ordinance was read third reading on this the /h. day following vote: Luther Jones Betty N. Turner Jack K. Dumphy Bob Gulley Herbert L. Hawkins, Jr. Dr. Charles W. Kennedy Cliff Zarsky That the foregoing. ordinance 71.1t, -)For the third time and passed finally on this the 19 day of, 19 Y, , by the following vote: Luther Jones Betty N. Turner Jack K. Dumphy Bob Gulley Herbert L. Hawkins, Jr. Dr. Charles W. Kennedy Cliff Zarsky PASSED AND APPROVED, this the ,73 day of � ,, 19 1� ATTEST: fort second time and passed to its of , 19 e/, by the AWED: ��yy DAY F 1971: J. BRUCE AYCOCK, CI ATTOR,EY By THE C ' Y OF CORPUS CHRISTI, TEXAS 16772 • STATE OF TEXAS, County of Nueces. }ss: PUBLISHER'S AFFIDAVIT " v. 343991 CITY OF C.C. Before me, the undersigned, a Notary Public, this day personally came .BILLTEEmalsal , who being first duly sworn, according to law, says that he is the ACCOUN-T.7NG-CLERIC of the Corpus Christi Caller and The Corpus Christi Times, Daily Newspapers published at Corpus Christi, Texas, in said County and State, and that the publication of NOTICE OF PASSAGE OF ORDINANCE N0. 16772........ of which the annexed is a true copy, was published in on the28th day of DECEj+jl3FR 19.81..., and once each day thereafter for one CORPUS CHRISTI..AIFLER,IimE0 consecutive day. one Times. $_ 31.98 Subscribed and sworn to before me this .KILIE..,I...HENDERSODE 5th day of JANUARY 19 82 LOIS WINN Notal 19ublic, Nuece County, Texas s *as S2,26 p ha an d the commodity 'holesale sale price Index•, is 100.6. Such formula mus`, suit in �a change of at leaf .Lc per unit or no 6diustme } shall be made, and all adlustment •shall be made to the nearest /.c. 1 City retains the right toad lust the rates for fuel flo wage fees set forth herein, such rates to be published by ordinance duly adopted by the City Council, City will put this same clause in any re newel, amendment, or ex- tension of any other existing fixed based operator lease as well as any other new fixed base operator lease. { Effective as of the date of the execution of this agree- ment, the rents based on the foregoing formula are as fol- lows• The Improved Area, seven and one-fourth (71/4c) cents per square foot per year. Unimproved area, two and one-half (2-1/2c) cents tbiniffettf6: Area 66se hang- ar operators. 6. To rent, lease and char- ter aircraft and to engage in the business of teaching and/or otherwise instructing flying' and 'aircraft mechan- cs 7, pfa ld esigns R:1 4 wse wfssnl r+':" ?M:V.7 ..P4:3avtit ',VA