Which one of the following materials has the maximum, sustainable, slope angle, as determined by the angle of repose?
A)unfractured granite
B)moist, sandy soil with a clay-rich matrix
C)dry sand
D)unsorted, crushed rock used for highway paving

Question

Quizplus · Accepted Answer

Dry sand has a low cohesive strength and a high angle of repose, resulting in a maximum sustainable slope angle. The other materials have higher levels of cohesion and lower angles of repose, making them less suitable for steep slopes.

Which One of the Following Materials Has the Maximum, Sustainable