CHST Struck-by and Caught-in/Between Hazards 2

Question 1

Under OSHA 1926.651(j)(2), excavated spoil must be kept at least what distance from the edge of an excavation?

Accepted Answer

2 feet

Answer

Spoil and equipment must be kept at least 2 feet from the edge, or held back by retaining devices, so they cannot fall or roll into the excavation.

Question 2

At what minimum trench depth must a stairway, ladder, ramp, or other safe means of egress be within 25 feet of lateral travel?

Accepted Answer

4 feet

Answer

1926.651(c)(2) requires a safe means of egress in trench excavations 4 feet or deeper, no more than 25 feet of lateral travel from workers.

Question 3

An excavation is planned to a depth of 22 feet. Who must design its protective system?

Accepted Answer

A registered professional engineer

Answer

Protective systems for excavations deeper than 20 feet must be designed by a registered professional engineer.

Question 4

What is the maximum allowable slope for a simple sloped excavation under 20 feet deep in Type C soil?

Accepted Answer

1½H:1V (34°)

Answer

Appendix B to Subpart P limits Type C soil to a 1½:1 slope, about 34 degrees from horizontal.

Question 5

Which protective method is NOT permitted in Type C soil?

Accepted Answer

Benching

Answer

Subpart P Appendix B allows benching only in cohesive Type A and B soils, not in Type C.

CHST - Construction Health and Safety Technician Practice Test