CSLB Safety and OSHA Compliance 3

Question 1

What type of shoring system uses hydraulic or mechanical cylinders pressed against trench walls to prevent cave-ins?

Accepted Answer

Aluminum hydraulic shoring

Answer

Aluminum hydraulic shoring uses pressure-applied cylinders or struts to brace trench walls and prevent collapse.

Question 2

Under Cal/OSHA, who is qualified to classify soil type and approve protective systems for an excavation?

Accepted Answer

A competent person trained in soil classification

Answer

Cal/OSHA requires a 'competent person' — one with specific soil classification training — to classify soil and select appropriate protective systems.

Question 3

What is the minimum distance workers must keep spoil piles from the edge of an excavation under Cal/OSHA rules?

Accepted Answer

2 feet

Answer

Cal/OSHA requires spoil piles to be kept at least 2 feet from the edge of an excavation to prevent material from falling in.

Question 4

Which PPE is required for all workers where there is a risk of head injury from falling objects on California construction sites?

Accepted Answer

Hard hat (safety helmet)

Answer

Cal/OSHA mandates hard hats wherever there is a danger of head injury from falling or flying objects on construction sites.

Question 5

Under California law, which entity must be notified before any excavation or digging begins near underground utilities?

Accepted Answer

Underground Service Alert (USA/811)

Answer

California law requires contractors to contact Underground Service Alert (USA/811) at least 2 working days before excavating to locate and mark underground utilities.

CSLB - Contractors State License Board Practice Test

CSLB - Contractors State License Board Practice Test

CSLB Safety and OSHA Compliance 3