Fire Apparatus Access Road Calculator

Determine fire apparatus access road requirements per IFC Section 503 including width, turning radius, and dead-end limits.

Input Parameters

Results

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Minimum Road Width
ft
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Turnaround Required
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Turnaround Min Size
ft
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Access Required Around
%
Note: Fire apparatus access roads must support an imposed load of at least 75,000 lbs and provide an all-weather driving surface. Aerial apparatus access requires minimum 26 ft clear width and 30 ft setback from building. Dead-end access roads exceeding 150 ft require an approved turnaround.

Reference

IFC Section 503 - Fire Apparatus Access Roads: Minimum Width: 20 ft standard, 26 ft aerial apparatus (IFC D105.1) Minimum Vertical Clearance: 13 ft 6 in Dead-End Limit: 150 ft without turnaround (IFC 503.2.5) Turnaround: 96 ft diameter cul-de-sac or hammerhead (IFC D103.1) Buildings > 30 ft height or > 62,000 sq ft: require access on multiple sides All-weather surface, minimum loading: 75,000 lbs GVW