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HomeMy WebLinkAbout4223 ORDINANCE NO. AN ORDINANCE revising the Building and Fire Safety Code, B.M.C. Chapter 17.04, by adopting 1988 editions of uniform construction codes. WHEREAS, The Building and Fire Safety Code was adopted to ensure that the City of Bremerton will administer and enforce the State Building Code Act (RCW 19.27) within the City Limits; and WHEREAS, the State Building Code Council for the State of Washington has adopted new editions of the uniform codes with amendments; and WHEREAS, additional modification and amendments are necessary to insure the City of Bremerton is in compliance with those amendments made by the State Building Code Council; now therefore THE CITY OF BREMERTON DOES HEREBY ORDAIN: SECTION 1. Amendment. BMC 17.04.030 is amended to read: 17.04.030 - ADOPTION BY REFERENCE - The following codes and regulations are hereby adopted by reference subject to the modifications and amendments set forth in the Chapter. (1) International Conference of Building Officials, ,~o~ ~ ) (1988 ed.); Provided Uniform Administrative Code , Table 3B is not adopted. (2) International Conference of Building officials, Uniform Building Code and Uniform Building Code Standards, ~ (1988 ed.), together with those appendices Chapters 1, 7, 11, 12 Division II, 32, 35, 38, 49, 55, and 70; Provided § 4505 (e), § 4506 (b) and Appendix Chapter 12 Division I are not adopted. (3) International Association of Plumbing and Mechanical Officials and International Conference of Building Officials, Uniform Mechanical Code, ~-1~(1988 ed.), together with Chapter 22 and Appendices A, B, and C. (4) Western Fire Chiefs Association and International Conference of Building Officials, Uniform Fire Code and Uniform Fire Code Standards, 3c~ (1988 ed.), together with Appendices IA, IB, IIB, IIC, IIIA, IIIB, IVA, VA, and VIA. (5) International Association of Plumbing and Mechanical Officials and International Conference of Building Officials, Uniform Plumbing Code and Standards, ~ (1988 ed.), together with Appendices A, B, C, D, G, and H; Provided, Chapters 11 and 12 are not adopted. (6) International Conference of Building Officials, Uniform Sign Code ~c~ (1988 ed.). (7) International Conference of Building Officials, Uniform Code for the Abatement of Dangerous Building ~ (1988 ed.). (8) Washington State Building Code Advisory Councils, Regulation for Barrier-free Facilities, adopted pursuant to RCW 70.92.100. (9) Washington State Building Code Advisory Councils, Washington State Energy Code, WAC 51.12, as amended. SECTION Z. New Section. A new section is added to BMC 17.04 to read as follows: 17.04.111 UBC § 420, Ch. 4 Amended - Added definition of single family residential building. SINGLE FAMILY RESIDENTIAL BUILDING is a dwelling containing only one dwelling unit. SECTION 3. New Section. A new section is added to BMC 17.04 to read as follows: 17.04.112 UBC § 414, Ch. 4 Amended - Added definition of multifamily residential building. MULTIFAMILY RESIDENTIAL BUILDING is a common wall dwelling or apartment house that consists or four or fewer dwelling units that do not exceed two stories in height and that are less than five thousand square feet in total area. SECTION 4. New Section. A new section is added to BMC 17.04 to read as follows: 17.04.113 Section 2313(h) 2.I. Diaphragms, (iv) Amended. (iv) Where wood diaphragms are used to laterally support concrete or masonry walls, the anchorage shall conform to Section 2313(h) 2. H above. In Seismic Zones Nos. ~, 3 and 4 anchorage shall not be accomplished by use of toe nails or nails subject to withdrawal, nor shall wood ledgers or framing be used in cross-grain bending or cross-grain tension, and the continuous ties required by paragraph (iii) above shall be in addition to the diaphragm sheathing. SECTION 5. New Section. A new section is hereby added to BMC 17.04 to read as follows: 17.04.113 Chapter 27 of the Uniform Building Code Amended - Exception. Section 2722(f) 6 item of the exceptions is hereby amended to read as follows; EXCEPTION: This requirement need not apply in any of the following cases, provided the compactness limitations for beams given in Section 2722(f) 4 shall apply to columns as well: 1. For columns with fa less than 0.4 Fy for all load combinations, except for loads specified in Section 2722(d) 1. Such columns shall have allowable stresses reduced 25 percent when one end frames into a joint not complying with Formula 22-3, and 50 percent when both ends frame into joints not complying with Formula 22-3. Section 2733(f) 7, is hereby amended to read as follows; 7. Trusses in SMRSF. Trusses may be used as horizontal members in SMRSF if the sum of the truss seismic force flexural strength exceeds the sum of the column seismic force flexural strength immediately above and below the truss by a factor of at least 1.25. For this determination the strengths of the members shall be reduced by the gravity load effects. In building of more than one story, the column axial stress shall not exceed 0.4 Fy and the ratio of the unbraced column height to the least radius of gyration shall not exceed 60. Columns shall have allowable stresses reduced 25 percent whew one end frames into a truss, and 50 percent when both ends frame into trusses. The connection of the truss chords to the column shall develop the lesser of the following: A. The strength of the truss chord. B. The chord force necessary to develop 125 percent of the flexural strength of the column. SECTION 6. New Section. A new Section is hereby added to BMC 17.04 to read as follows: 17.04.115 UBC § 3801(e) adopted. Sprinkler Installation. Section 3801(e) when sprinklers are installed in an insulated ceiling cavity not meeting exceptions of UBC Standard 38-1 or where blocked by ducts or other similar obstructions, a space 6 inches or greater in depth with not less than 12 inches clearance for ducts or other similar obstructions shall be provided under all sprinklers. SECTION 7. New Section. A new section is hereby added to BMC 17.04 to read as follows: 17.04.125 UBC § 5105 ~ended. Elevator Machine Room Floors. Elevator Machine Room Floors - Section 5105. Elevator hoistways shall not be vented through an elevator machine room unless such venting is accomplished by an approved duct system installed through the elevator machine room. Cable slots entering the machine room sh~!! ba s!acvad bana~th tha m~ckin~ room floor and a~tand to not lass th~n 12 ~~ ~ .... *~ shaft -;ant to must be installed in a manner that inhibit~ the passage of smoke into the machine room. SECTION S. Effective Date. This ordinance shall become effective ten (10) days from passage and publications. APPROVED by the City Council on the first reading this ~ day of ~[~:, , 1989. PASSED by t~e City ~uncil of the C~ of Bremerton this s iden~/ ~ty il APPROVED this ~ day of ~__ ,t-i~,,,© ! , 1989. LOBE, Mayor / ATTEST: City Clerk