Aerial Ladder Reach
Horizontal and vertical reach from angle and extension.
Example
You enter
- Angle (degrees) 70
- Ladder extension (ft) 100
You get
- Horizontal reach 34.2 ft
- Vertical reach 94.0 ft
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