Where ramps are necessary or desired, they shall conform to the following specifications:
The ramp shall not have a slope greater than one (1) foot rise in twelve (12) feet of run, or eight and thirty-three one-hundredths percent (8.33%), or four (4) degrees fifty (50) minutes.
Any such ramp shall have a handrail on at least one (1) side, and preferably two (2) sides. The top of handrails shall be thirty-two (32) inches above the surface of the ramp and shall extend one (1) foot beyond the top and bottom of the ramp.
The ramp shall be at least thirty-two (32) inches wide (inside clear measurements) and have a surface that is nonslip.
If a door swings out onto the platform or toward the ramp, the platform of the ramp shall be at least five (5) feet by five (5) feet. This platform size shall be clear of door swing.
If the door does not swing onto the platform or toward the ramp, this platform shall be at least three (3) feet deep and five (5) feet wide. This platform size shall be clear of door swing.
The bottom of the ramp shall have at least a six-foot level run.
Where the ramp exceeds thirty (30) feet in length, level platforms shall be provided at thirty-foot intervals. Level platforms shall also be provided at turns in the ramp. Platforms shall be at least thirty-two (32) inches wide by five (5) feet long.