405.8+9 – Edge Protection

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.

405.9.1 Extended Floor or Ground Surface.
The floor or ground surface of the ramp run or landing shall extend 305 mm (12″) minimum beyond the inside face of a handrail complying with 505.

405.9.2 Curb or Barrier.
A curb or barrier shall be provided that prevents the passage of a 100 mm (4″) diameter sphere, where any portion of the sphere is within 100 mm (4″) of the finish floor or ground surface.