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What Is the Architectural Standard for a Wheelchair Ramp?

– ada standards require a 1:12 ramp slope ratio which equals 4.8 degrees slope or one foot of wheelchair ramp for each inch of rise. For instance, a 30-inch rise requires a 30-foot handicap wheelchair ramp. – ada guidelines require a minimum 5′ x 5′ flat, unobstructed area at the top and bottom of the ramp.

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