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503.2.2.3 Grade.
The grade of the fire apparatus access road shall not exceed 10 percent unless approved by the commissioner.
503.2.2.4 Turning radius.
The required turning radius of a fire apparatus access road shall be determined by the commissioner.
503.2.2.5 Bridges and elevated surfaces.
Any bridge or elevated surface on a fire apparatus access road shall be designed for a live load sufficient to carry the imposed loads of fire apparatus. Signs shall be posted at both entrances to any bridge or elevated surfaces not capable of carrying such a load. Roadways or surfaces not capable of carrying such load that adjoin fire apparatus roads shall be separated by approved barriers and/or marked by approved signs.
503.2.2.6 Angles of approach.
The angles of approach and departure for fire apparatus access roads shall be within the limits established by the department based on the department's fire apparatus.
503.2.3 Roadway width and vertical clearance.
Fire apparatus access roads shall have an unobstructed width of not less than 34 feet (10 363 mm) excluding shoulders, except as provided in FC 503.2.3.1 through 503.2.3.4, and an unobstructed vertical clearance of not less than 14 feet (4267 mm).
503.2.3.1 Special zoning districts.
In Special Hillside Preservation Districts complying with the requirements of Section 119-214 of the Zoning Resolution, or other special zoning district regulation restricting the width of streets or private roads to less than 34 feet (10 363 mm), a fire apparatus access road shall have an unobstructed width of not less than 30 feet (9144 mm), excluding shoulders.
503.2.3.2 Small residential developments.
Where access is being provided to residential developments of not more than five dwelling units, and all buildings to which the road provides access are protected throughout by a sprinkler system, a fire apparatus access road shall have an unobstructed width of not less than 30 feet (9144 mm), excluding shoulders.
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