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100

The color of paint used to mark proposed excavation sites.

What is white

100

The color of paint used to mark gas utilities

What is yellow

100

Time allowed for utility companies to mark property for a dig ticket

What is three working days

100
A one call service that assists in the process of marking utilities before a dig operation.
What is 811
100

Trench boxes or shields shall be installed in a manner that will prevent this.

What is lateral or other hazardous movement of the shield.

200
When excavations cannot be easily seen, they must be protected by this.
What is guard rail, fence, or barricade
200
Ladders must rise this height above the grade of a trench.
What is 3 feet
200
Spoil piles must be this far from the edge of an excavation.
What is two feet.
200
A competent person must inspect an excavation site, adjacent areas, and protective systems at this interval
What is daily (and after rainfall)
200

18" on either side of an existing utility.

What is the tolerance zone

300
Separation of soil, or rock material from the side of an excavation.
What is cave-in
300
When an excavation is five foot or greater, or the competent person recognizes potential for cave-ins these are used.
What is protective systems
300
Granular soils, sand, and loamy soils are classified as this.
What is type "c" soils
300
Angular gravel (crushed rock), silt, and silt loam are classified as this.
What is type "b" soils
300
Clay, silty clay, clay loam, and hard pan are classified as this.
What is type "a" soils
400
The competent person shall conduct these to ensure the safety of employees working in and near excavations.
What is inspections
400

This person is required to certify the protective systems when the depth of a trench is greater than 20 feet.

Who is registered professional engineer

400

This is where you can find safety rules and regulations for construction excavations.

What is 29 CFR 1926 Subpart P

400

This kind of system is not allowed to be used in type C soil.

What is benching

400
Shoring is needed if a trench is this height.
What is 5 foot or greater
500

The minimum height that a trench box must extend above the base of sloping elevation.

What is 18"

500

For a trench of four feet or greater, you need to provide this.

What is a safe means of entry & egress

500
Employees shall be provided with and shall wear these when working near high traffic areas.
What is high visibility and reflectorized vests
500

Maximum distance between workers and exit points in an excavation.

What is 25 feet

500

Workers are allowed to be in the trench/excavation when items are being loaded, but not this.

What is not allowed to be under the loads