Master Plumber Exam Jobsite Safety and Regulations 2

Question 1

Under OSHA 29 CFR 1926, what is the minimum distance that a trench must be from a spoil pile to prevent cave-in hazards?

Accepted Answer

2 feet

Answer

OSHA requires spoil piles be placed at least 2 feet from the edge of an excavation to prevent material from falling back in and causing a cave-in.

Question 2

A plumber is working in a trench 6 feet deep in Type B soil. Which protective system is required by OSHA?

Accepted Answer

Shoring or trench box

Answer

Type B soil requires sloping at 1:1 or a protective system such as shoring or a trench box for excavations deeper than 5 feet.

Question 3

Which agency is responsible for enforcing the Hazard Communication Standard (HazCom) on construction jobsites?

Accepted Answer

OSHA

Answer

OSHA enforces the Hazard Communication Standard (29 CFR 1910.1200) which requires proper labeling and SDS for hazardous chemicals on jobsites.

Question 4

When is a Safety Data Sheet (SDS) required to be available on a jobsite?

Accepted Answer

At all times when hazardous chemicals are present

Answer

OSHA requires SDS documents to be readily accessible to employees at all times during their work shift when hazardous chemicals are in the workplace.

Question 5

A master plumber supervising a crew must ensure workers receive fall protection training when working at or above what height on a construction site?

Accepted Answer

6 feet

Answer

OSHA 1926.502 requires fall protection for construction workers at elevations of 6 feet or more above a lower level.

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