CFB Safety & Compliance Standards 5

Question 1

A field builder is asked to install a ground fault circuit interrupter (GFCI) on a temporary power distribution panel. According to OSHA, GFCIs are required on all 120-volt, single-phase, 15- and 20-ampere receptacles in which setting?

Accepted Answer

All outdoor and construction site temporary power applications

Answer

OSHA 1926.404(b)(1) requires GFCI protection on all temporary 120V, 15- and 20-amp receptacle outlets used during construction.

Question 2

What does a Type III barricade indicate in work zone traffic control as defined by the MUTCD?

Accepted Answer

Road closed ahead — traffic must detour

Answer

Per the Manual on Uniform Traffic Control Devices (MUTCD), Type III barricades are used specifically to close roads to through traffic.

Question 3

In the context of CFB field construction, what is the purpose of a pre-task safety plan (PTSP)?

Accepted Answer

To communicate daily task hazards and controls to the crew before starting work

Answer

A PTSP (also called a tailgate safety meeting) is completed each day or for each new task to communicate specific hazards and controls to all workers.

Question 4

According to OSHA's fall protection standard for construction (29 CFR 1926.502), what is the maximum free-fall distance allowed when using a personal fall arrest system?

Accepted Answer

6 feet

Answer

OSHA limits free fall to 6 feet and total fall (including deceleration) to 18.5 feet when using a personal fall arrest system.

Question 5

A field builder encounters soil classified as Type C during a trenching operation. Which protective system is required for a 10-foot-deep trench in this soil?

Accepted Answer

Maximum 1½H:1V slope, or shoring/shielding

Answer

OSHA Appendix B to Subpart P requires Type C soil (the least stable) to be sloped at 1½H:1V or protected by shoring or trench boxes.

(CFB) Certified Field Builder Practice Test

(CFB) Certified Field Builder Practice Test

CFB Safety & Compliance Standards 5