Trench

Question 0

In general a trench depth is greater than the width, but the width of the trench is not greater than _____

Answer 0

15 feet

Question 1

A tench is described as _______ excavation made below the surface of the ground.

Answer 1

narrow

Question 2

A cave in is defined as ……

Answer 2

the separation of a mass of soil or rock from the side of an excavation, or loss of soil from under a trench shield or support system, and sudden movement into the excavation, either by falling or sliding, in sufficient quantity to entrap, bury, or injure and immobilize a person or persons

Question 3

Vibration sources shall be shut down within ______ feet in all directions of the collapse site.

Answer 3

500 feet

Question 4

First responders should position no closer than ____ feet to the collapse site.

Answer 4

150 feet

Question 5

First responders should establish control zones. The hot zone is _____ feet and the warm zone is _____ feet in all directions. Mark zones with fire line tape.

Answer 5

Hot Zone is 150 feet in all directions

Warm Zone is 250 feet in all directions

Question 6

How should a trench be approached?

Answer 6

Approach from the ends no more than 4 feet from the lip

Question 7

First arriving fire units shall position no more than _____ feet to scene

Answer 7

150 feet

Question 8

ALL other FD units (not TROT) should stage _____ feet from the scene

Answer 8

250 feet

Question 9

first TROT units should position no closer than ______ feet from the scene?

Answer 9

50 feet