36 CFR Part 1195 Standards for Accessible Medical Diagnostic Equipment

M303.3 Entry.

Where there is a change in level at the entry to wheelchair spaces, the change in level shall comply with M303.3.

M303.3.1 Vertical.

Changes in level of ¼ inch (6.4 mm) high maximum shall be permitted to be vertical.

M303.3.2 Beveled.

Changes in level between ¼ inch (6.4 mm) high and ½ inch (13 mm) high maximum shall be beveled with a slope not steeper than 1:2.

M303.3.3 Ramped.

Changes in level greater than ½ inch (13 mm) high shall be ramped and shall comply with M303.3.3.

M303.3.3.1 Running Slope.

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

EXCEPTION: A running slope not steeper than 1:8 shall be permitted for ramp runs with a maximum height of 2 ½ inches (64 mm).

M303.3.3.2 Cross Slope.

The cross slope of ramp runs shall not be steeper than 1:48.

M303.3.3.3 Clear Width.

The clear width of ramp runs shall be 36 inches (915 mm) minimum.

M303.3.3.4 Edge Protection.

Ramps with drop offs ½ inch (13 mm) or greater shall provide edge protection 2 inches (50 mm) high minimum on each side with a drop off.

M303.3.3.5 Handrails.

Ramps with a rise greater than 6 inches (150 mm) shall provide handrails on both sides.