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unobstructed vertical clearance of not less than 13 feet 6 inches (4115 <br /> mm). <br /> B. Subsection 503.2.6 of the IFC, entitled"Bridges, vaults, and elevated surfaces" is hereby <br /> deleted and the following inserted in its place: <br /> 503.2.6 Bridges, vaults, and elevated surfaces. Where a bridge, utility vault, or <br /> an elevated surface is part of a fire apparatus access road, the bridge, utility vault, <br /> or elevated surface shall be constructed and maintained in accordance with <br /> specifications established by the fire code official and the City Engineer, or their <br /> designees; at a minimum, however, the bridge or elevated surface shall be <br /> constructed and maintained in accordance with AASHTO Standard Specifications <br /> for Highway Bridges. Bridges, vaults, and elevated surfaces shall be designed for <br /> a live load sufficient to carry the imposed loads of a 30 ton or greater fire <br /> apparatus, the total imposed load to be determined by the fire code official. <br /> Vehicle load limits shall be posted at both entrances to bridges when required by <br /> the fire code official. Where elevated surfaces designed for emergency vehicle <br /> use are adjacent to surfaces which are not designed for that use, approved barriers <br /> or approved signs, or both, shall be installed and maintained, if required by the <br /> fire code official. <br /> C. Subsection 503.3 of the IFC, entitled"Marking"is hereby deleted and the following <br /> inserted in its place: <br /> 503.3 Marking. Fire apparatus access roads shall be marked whenever <br /> necessary to maintain the unobstructed minimum required width of roadways. <br /> Subject to the fire code official's prior written approval, marked fire apparatus <br /> access roads, or "fire lanes" as defined in section 502.1 of the code, may be <br /> established or relocated at the time of plan review, pre-construction site <br /> inspection, and/or post construction site inspection as well as any time during the <br /> life of the occupancy. Only those fire apparatus access roads established by the <br /> fire code official can utilize red marking paint and the term "fire lane." Fire lanes <br /> shall be marked as directed by the fire code official with one or more of the <br /> following types of marking: <br /> 1. Curbs shall be identified by red traffic paint with a 6 inch <br /> wide stripe on the top and front, extending the length of the <br /> designated fire lane. <br /> 2. Rolled curbs shall be identified by red traffic paint with a 6 <br /> inch wide stripe on the curb, extending the length of the <br /> designated fire lane. <br /> 3. Lanes without curbs shall be identified by red traffic paint <br /> with a 6 inch wide stripe on the pavement, extending the <br /> length of the designated fire lane. <br /> 4. The words "NO PARKING — FIRE LANE " shall be in 3 <br /> inch stroke white letters 18 inches in height, and placed 8 <br /> inches measured perpendicular from the red paint stripe on <br /> 7 <br />