Other
Competent Person
Soil
Protective Systems
Hazardous Conditions
100

What is the difference between a sounding bar and a probing bar?

What is: insulated handle on the probing bar to protect against electrical shock
100

If a trench is greater than _____ feet deep, a registered professional engineer must design the system.

What is 20

100

True or False: In a layered system, soil will be classified as the strongest layer. 

What is false

100

Removal will begin at, and progress from, the ______ of the excavation.


What is the bottom

100

Equipment, materials and trench spoils shall not be stored within ___ feet of the edge of the trench.

What is 2

200

A _________ is an example of a portable device used for shielding.

What is a Trench (Build-A) Box

200

A competent person is responsible for determining the soil classification based on what two tests?

What are visual and manual

200

A soil cannot be classified as Type A if _________, ___________, or _________.

a) it is fissured b) subject to vibration c) previously disturbed.

200

A soil Type B excavation of less than 20 ft deep can be sloped at a _to_ (horizontal to vertical) or ___ degree

What is 1:1

What is 45 degrees

200

Daily inspections should look for 1)_____ 2)______ 3)______ and 4)_______.

What is 1) shoring requirements 2) water accumulation 3) undermining 4) sloughing

300

Protective systems shall be maintained ________ by the manufacturer.

What is annually

300
Under what conditions must a Competent Person inspect an excavation?

What are: Daily, throughout the shift, and after conditions change (rainstorm) or due to other hazardous condition.

300

Name 3 types of manual soil analysis.

What is 1) plasticity (cohesiveness) 2)dry strength 3) thumb penetration

300

A soil Type C excavation of less than 20 ft deep can be sloped at a _to_ (horizontal to vertical) or ___ degrees.

What is 1 1/2 to 1

What is 34 degrees

300

An oxygen deficient atmosphere contains ____ than ____ % oxygen.

What is less than 19.5

400

Warning systems for mobile equipment include 1) _______, 2) ________, and 3) _______.

What are: 1) barricades 2) hand or mechanical signals 3) stop logs

400

A competent person as defined by OSHA is one who is ___________ of identifying existing hazards and one who has the ___________ to take prompt measures to abate the hazards.

What is CAPABLE and AUTHORITY

400

Type B soil descriptions are 1)______ 2)______

3)______

What is 1) silt 2) sandy loam 3) medium clay

400

If a trench is between 5 ft. and 20 ft. deep the competent person may select from Sloping and Benching, _______ and Shielding as acceptable protective measures.

What is SHORING

400

A stairway, ladder, or ramp will be located in excavations 4 feet or more in depth every ____ lateral feet.

What is 25

500

Employees performing copper pulls must wear ASTM approved _____ KV high voltage insulating gloves with leather over-gloves when handling the cable or pipe.

What is 20 KV

500

A competent person may determine a trench less than 4 feet may require a protective system if there are signs of 1)______ 2)_______or  3)________.

What are 1) water 2) vibrations 3) previous disruption.

500

Type C can be described as: 1)______ 2)_______

3)_______ 4)________

What is 1) gravel 2) loamy sand 3) soft clay 4) previous disturbed

500

Shields shall extend  _____ above the vertical top of the trench or excavation face.

What is 18 inches

500

What is the stop-work criterion for hydrocarbons?

What is 10 ppm for 1 minute