Aerial Ladder Reach

Horizontal and vertical reach from angle and extension.

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Example

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Details, formula, and sources

Horizontal reach = ladder_length × cos(angle); vertical reach = ladder_length × sin(angle) + apparatus turntable height.

NFPA 1901 (Standard for Automotive Fire Apparatus) by name; manufacturer aerial-device technical data sheets (Pierce, E-One, Sutphen) by name.

NFPA 1901 read-only at nfpa.org/freeaccess; manufacturer specs free on each manufacturer site.

Estimate. AHJ and licensed fire protection engineer govern.

Field names used by the API: angle_deg, extension_ft, horizontal_reach_ft, vertical_reach_ft

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