405 – Ramps Quick Guide

405.2 Slope.
Ramp runs shall have a running slope not steeper than 1:12.

405.3 Cross Slope.
Cross slope of ramp runs shall not be steeper than 1:48.

405.4 Floor or Ground Surfaces. 
Floor or ground surfaces of ramp runs shall comply with 302. Changes in level other than the running slope and cross slope are not permitted on ramp runs.

405.5 Clear Width. 
The clear width of a ramp run and, where handrails are provided, the clear width between handrails shall be 915 mm (36″) minimum.

405.6 Rise. 
The rise for any ramp run shall be 760 mm (30″) maximum.

405.7 Landings. 
Ramps shall have landings at the top and the bottom of each ramp run.  Landings shall comply with 405.7.

405.8 Handrails.
Ramp runs with a rise greater than 150 mm (6″) shall have handrails complying with 505.

405.9 Edge Protection. 
Edge protection complying with 405.9.1 or 405.9.2 shall be provided on each side of ramp runs and at each side of ramp landings.

405.10 Wet Conditions.
Landings subject to wet conditions shall be designed to prevent the accumulation of water.