Can Type C soil be benched?
Besides, can Type C soil be sloped?
OSHA requires type C soil to be sloped at 1½H:1V and it cannot be benched. This means that the slope must be cut back 1½ ft horizontally for every 1 ft of depth.
Likewise, what type of soil can be benched? Type A soils are cohesive with an unconfined compressive strength of 1.5 tons per square foot (tsf) or greater. Examples include clay, silty clay, sandy clay and clay loam. Type A soil may also be “benched,” or set at specific angles for employee protection.
Similarly one may ask, can Class C Soil be benched?
Assume TYPE C soil. This gives a maximum allowable slope of 34 degrees (1.5H: 1V). No benching is allowed.
What is the slope ratio for Type C soil?
|Soil type||Height:Depth ratio||Slope angle|
|(For a maximum excavation depth of 12 ft)|