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Trenching & Shoring Safety – C010M (29 min.)

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1
A competent person does not have to perform visual and manual soils testing.
2
Manual tests help to better identify the soil type and _________.
3
If a trench is more than _____ feet in depth, there must be a protective system in place while workers are in the excavation.
4
Secure ladders must be placed every ____ feet of lateral travel.
5
Soil is heavy. A cubic foot generally weighs as much as _____ pounds or more.
6
According to NIOSH, trench cave-ins are predictable and preventable.
7
A competent person must classify the soil by using ________ test.
8
Trench cave-in fatalities are caused by __________.
9
Granular soil can be molded when moist.
10
It is not necessary for the competent person to conduct an inspection after every rain storm or other weather event.
11
When taking a soil sample, you should look for _________.
12
OSHA classifies soils into four categories: Type A, Type B, Type C and ________.
13
The competent person is responsible to ensure that ladders, ramps and/or stairways are provided for all excavations 10 feet or more in depth.
14
A person buried under only a couple of feet of soil can experience enough pressure to the chest area causing suffocation.
15
Type A soil is generally made up of _________.
16
The key component of the 1990 OSHA new standard requires a competent person, preferably a supervisor, be placed in charge of excavation and safety on the job.
17
Training and understanding the trenching and shoring regulations are keys to working safely in trenches.
18
A_________ is used to measure the strength of the soil.
19
It is not permissible to use backhoes, breakers, digging bars or other metal tools to locate or work around utilities.
20
A trench refers to a narrow excavation made below the surface of the ground where the width is greater than the depth.