CHST FREE CHST General Questions and Answers 3

Question 1

Under OSHA's Excavation Standard (29 CFR 1926 Subpart P), what is the minimum depth that requires a protective system unless the excavation is in stable rock?

Accepted Answer

5 feet

Answer

OSHA requires a protective system (sloping, shoring, or shielding) for excavations 5 feet or deeper unless the excavation is entirely in stable rock.

Question 2

Which OSHA standard governs the use of personal fall arrest systems (PFAS) in construction?

Accepted Answer

29 CFR 1926.502

Answer

29 CFR 1926.502 contains the fall protection systems criteria and practices, including requirements for personal fall arrest systems in construction.

Question 3

What is the maximum allowable noise exposure for an 8-hour workday under OSHA's construction noise standard?

Accepted Answer

90 dBA

Answer

OSHA's 29 CFR 1926.52 sets the permissible noise exposure at 90 dBA for an 8-hour time-weighted average in construction.

Question 4

A construction worker is exposed to a chemical with a flash point of 80°F (27°C). Under OSHA's flammable liquids standard, this material is classified as which class?

Accepted Answer

Class IB

Answer

Class IB flammable liquids have flash points below 73°F (23°C) and boiling points at or above 100°F, but a flash point of 80°F falls within Class II (between 73°F and 140°F).

Question 5

According to ANSI/ISEA 107, which class of high-visibility safety apparel provides the highest level of conspicuity and is required for workers near high-speed roadways?

Accepted Answer

Class 3

Answer

Class 3 high-visibility apparel offers the greatest visibility and is required for workers in high-speed, complex traffic environments where full-body visibility is needed.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST FREE CHST General Questions and Answers 3