SP OPS 10-0 Trench Response- Awareness Level

Question 1

The term “Trench” is generally limited to excavations that are less than ____ feet wide at the bottom, and less then ____ feet deep
A. 50, 50
B. 15, 20
C. 25, 25
D. 100, 100

Answer 1

B. 15, 20

Question 2

What is not a type of trench collapse?
A. Spoil pile slump
B. Shear Wall
C. Lip slide
D. Slough In

Answer 2

A. Spoil pile slump
(Spoile pile slide, Shear Wall, Slough In, Lip Slide)

Question 3

Vibrations transmitted through the ground affect the cohesive strength of the soil. Equipment operating near by or traffic even as far as ____ feet produces enough vibration to cause a trench wall collapse.
A. 1200
B. 500
C.1000
D. 1500

Answer 3

B. 500

Question 4

When it comes to Trenches. OSHA regulations of any trench over ____foot in depth, unless stable rock, must have protection in place.
A. 4
B. 10
C. 5
D. 12

Answer 4

C. 5

Question 5

If a trench collapsed before, there is a ____% chance that it will collapse again.
A. 25
B. 35
C. 50
D. 39.98

Answer 5

C. 50

Question 6

____feet rule, is the recommened safe distance for operating apparatus and equipment.
A. 200
B. 500
C. 300
D.1000

Answer 6

C. 300
If an engine is within 300 feet it shall be shut down to eliminate vibrations.

Question 7

What is the hot zone of a trench
A. 300 ft
B. 250 ft
C. 50 feet to 150 feet radious of the trench
D. with in 50 ft radius of the trench

Answer 7

D. with in 50 ft radius of the trench

Question 8

What is the warm zone of a trench
A. 300 ft
B. 250 ft
C. 50 feet to 150 feet radious of the trench
D. with in 50 ft radius of the trench

Answer 8

C. 50 feet to 150 feet radious of the trench

Question 9

what is the Cold zone for a trench
A. 300 ft
B. 150 feet to 300 feet radious of the trench
C. 50 feet to 150 feet radious of the trench
D. with in 50 ft radius of the trench

Answer 9

B. 150 feet to 300 feet radious of the trench