NCCER-OSHA Scaffold SG 125 QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) ALREADY
GRADED A+ 2025 NEW UPDATE
A boatswain's (bosun's) chair and work cage are what type of suspension scaffolds? -
CORRECT ANSWER: Single point
A licensed professional engineer shall design all scaffold erected higher than how many
feet? - CORRECT ANSWER: 125
A putlog is a truss used in scaffolding applications where? - CORRECT ANSWER:
Bridging over an obstruction is required
A rolling scaffold must have - CORRECT ANSWER: a horizontal diagonal brace
A rolling scaffold should only be used on surfaces such as steel and - CORRECT
ANSWER: concrete
A system scaffold should be plumbed and leveled after - CORRECT ANSWER: each
ring or wrap is completed
According OSHA, a medium duty scaffold is designed and constructed to carry a
working load of how many pounds per square foot? - CORRECT ANSWER: 50
According to OHSA, scaffold erection, movement, alteration, and dismantling must be
supervised by who? - CORRECT ANSWER: Competent person
, According to OSHA, a light-duty scaffold is designed and constructed to carry a working
load of how many pounds per square foot? - CORRECT ANSWER: 25
According to OSHA, what is the maximum allowable distance between different levels of
ledger wraps and runners? - CORRECT ANSWER: 6 feet 6 inches
Adjustings screw jacks are used to - CORRECT ANSWER: level the scaffold
All of the following safety device should be used when a worker is using a circular saw
except? - CORRECT ANSWER: Ground Fault Circuit Interrupter (FGCI)
Any scaffolding, including accessories such as braces, trusses, and ladders, damaged
or weakened from any cause should be? - CORRECT ANSWER: repaired or replaced
immediately
Approximately what amount of torque should be used to tighten a clamp? - CORRECT
ANSWER: 45 ft/lbs
Boards or wooden pad placed on the soil to support scaffold legs are? - CORRECT
ANSWER: Mudsills
Casters on a rolling scaffold should be locked - CORRECT ANSWER: before assembly
Casters on rolling scaffold must be able to support how many times the minimum load?
- CORRECT ANSWER: 4
Casters used on rolling scaffolds must have - CORRECT ANSWER: a positive locking
device
CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) ALREADY
GRADED A+ 2025 NEW UPDATE
A boatswain's (bosun's) chair and work cage are what type of suspension scaffolds? -
CORRECT ANSWER: Single point
A licensed professional engineer shall design all scaffold erected higher than how many
feet? - CORRECT ANSWER: 125
A putlog is a truss used in scaffolding applications where? - CORRECT ANSWER:
Bridging over an obstruction is required
A rolling scaffold must have - CORRECT ANSWER: a horizontal diagonal brace
A rolling scaffold should only be used on surfaces such as steel and - CORRECT
ANSWER: concrete
A system scaffold should be plumbed and leveled after - CORRECT ANSWER: each
ring or wrap is completed
According OSHA, a medium duty scaffold is designed and constructed to carry a
working load of how many pounds per square foot? - CORRECT ANSWER: 50
According to OHSA, scaffold erection, movement, alteration, and dismantling must be
supervised by who? - CORRECT ANSWER: Competent person
, According to OSHA, a light-duty scaffold is designed and constructed to carry a working
load of how many pounds per square foot? - CORRECT ANSWER: 25
According to OSHA, what is the maximum allowable distance between different levels of
ledger wraps and runners? - CORRECT ANSWER: 6 feet 6 inches
Adjustings screw jacks are used to - CORRECT ANSWER: level the scaffold
All of the following safety device should be used when a worker is using a circular saw
except? - CORRECT ANSWER: Ground Fault Circuit Interrupter (FGCI)
Any scaffolding, including accessories such as braces, trusses, and ladders, damaged
or weakened from any cause should be? - CORRECT ANSWER: repaired or replaced
immediately
Approximately what amount of torque should be used to tighten a clamp? - CORRECT
ANSWER: 45 ft/lbs
Boards or wooden pad placed on the soil to support scaffold legs are? - CORRECT
ANSWER: Mudsills
Casters on a rolling scaffold should be locked - CORRECT ANSWER: before assembly
Casters on rolling scaffold must be able to support how many times the minimum load?
- CORRECT ANSWER: 4
Casters used on rolling scaffolds must have - CORRECT ANSWER: a positive locking
device
