Question

the maximum slope for a hand propelled wheelchair ramp should be a 1 inch rise to every 12 inches of blank. What is the maximum ramp angle recommended to the nearest degree?​

Answer 1

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Answer:

5°

Explanation:

The angle for 12 inches of ramp length and the angle for 12 inches of run are very similar. Both are near 4.8°, so are 5° when rounded.

If we say 12 inches of run, then the tangent relation applies.

Tan = Opposite/Adjacent

tan(α) = (1 in)/(12 in)

α = arctan(1/12) ≈ 4.764°

The maximum angle is about 5°.