Question

According to the Americans with
Disabilities Act, enacted in 1990, the slope of a
wheelchair ramp must be less than 1/12 and there must
be a minimum 5-by-5 ft landing for every 2.5 ft of
rise. These dimensions were chosen to accommodate
handicapped people who face physical barriers in
public buildings and at work. An architect has
submitted the orthographic plan shown below. Does
the plan meet the requirements of the act? What will
be the ramp’s angle of ascent?

Answer 1

http://www.twiddla.com/527982

Answer 2

Plan does not meet regulations based on slope. The slope is rise over run 1.5/25 which is greater than 1/12. The slope should be 1/12 or less.

Answer 3

Angle of ascent can be determined. Find angle theta which is opposite side 1.5 and adjacent side 25.