DOMAIN 1: UNIT 4: WORKING AT HEIGHTS Flashcards
(20 cards)
According to OSHA 1926.502, how far below the working level must safety nets be positioned?
A) 20 feet
B) 25 feet
C) 30 feet
D) 35 feet
C) 30 feet
Safety nets must be positioned within 30 feet below the working level to provide adequate fall protection.
How far must a safety net extend beyond the working surface for a fall of more than 10 feet?
A) 8 feet
B) 10 feet
C) 12 feet
D) 13 feet
D) 13 feet
For falls greater than 10 feet, safety nets must extend at least 13 feet beyond the edge to effectively catch workers.
What is the required weight of the sandbag used for safety net drop testing?
A) 200 pounds
B) 300 pounds
C) 400 pounds
D) 500 pounds
C) 400 pounds
Drop testing requires a 400-pound sandbag dropped from the highest working level to ensure the net’s effectiveness.
What must be done with debris that falls into a safety net?
A) Leave it until the net is full
B) Remove it by the start of the next shift
C) Remove it only if it obstructs work
D) Leave it permanently
B) Remove it by the start of the next shift
Debris and tools must be removed to maintain the net’s effectiveness and prevent additional hazards.
Which type of scaffold is supported by ‘horses’ or saw horses?
A) Fabricated frame scaffold
B) Horse scaffold
C) Chimney hoist
D) Suspension scaffold
B) Horse scaffold
Horse scaffolds are platforms supported by saw horses, often used for lightweight work.
What component prevents unwanted scaffold movement?
A) Guardrails, Lifeline, Decelerating Devices
B) Ties and Braces, Base Plates & Mud Sills, Outriggers
C) Both A & B
D) Guardrails, Ties & Braces, PFAS
B) Ties and Braces, Base Plates & Mud Sills, Outriggers
Ties and Braces – Secure scaffolds to a structure to prevent swaying.
Base Plates & Mud Sills – Ensure a stable foundation.
Outriggers – Extend support for added stability on mobile scaffolds.
What is the stall load of a scaffold hoist?
A) The weight at which the hoist disconnects
B) The maximum weight allowed on a scaffold
C) The maximum weight the scaffold can support
D) The weight limit for individual workers
A) The weight at which the hoist disconnects
A stall load is the load at which the hoist automatically disconnects to prevent overloading.
How much weight must scaffolding be able to support?
A) 2 times the maximum intended load
B) 3 times the maximum intended load
C) 4 times the maximum intended load
D) 6 times the maximum intended load
C) 4 times the maximum intended load
OSHA requires scaffolding to support at least four times the expected maximum load.
How much weight must suspension ropes be able to support?
A) 2 times the maximum intended load
B) 4 times the maximum intended load
C) 5 times the maximum intended load
D) 6 times the maximum intended load
D) 6 times the maximum intended load
Suspension ropes must support at least six times the maximum intended load for safety.
What is the correct base distance for setting up a straight ladder?
A) 1/3rd of its height
B) 1/4th of its height
C) 1/5th of its height
D) 1/6th of its height
B) 1/4th of its height
The base should be placed one-fourth the total ladder height from the wall for stability.
What is the maximum fall distance for a personal fall arrest system?
A) 4 feet
B) 5 feet
C) 6 feet
D) 8 feet
C) 6 feet
Personal fall arrest systems must be rigged so that an employee cannot free fall more than 6 feet
What is the maximum allowable force on a body harness?
A) 900 pounds
B) 1800 pounds
C) 2500 pounds
D) 3600 pounds
B) 1800 pounds
OSHA limits the force exerted on a body harness to 1800 pounds to prevent serious injury.
What is the maximum deceleration distance for a personal fall arrest system?
A) 2 feet
B) 3.5 feet
C) 5 feet
D) 6 feet
B) 3.5 feet
The deceleration distance should not exceed 3.5 feet to minimize impact force during a fall.
A positioning device system must prevent falls of more than:
A) 1 foot
B) 2 feet
C) 3 feet
D) 4 feet
B) 2 feet
Positioning device systems must be designed to prevent falls of more than 2 feet.
What is the minimum force that an anchoring point for a positioning device system must support?
A) 1,500 pounds
B) 2,000 pounds
C) 3,000 pounds
D) 5,000 pounds
C) 3,000 pounds
Anchoring points for positioning devices must withstand at least 3,000 pounds of force.
At what height must fall protection be used in construction?
A) 4 feet
B) 6 feet
C) 8 feet
D) 10 feet
B) 6 feet
Fall protection is required for workers at heights of 6 feet or more in construction.
What is NOT a common fall protection system?
A) Safety nets
B) Guardrails
C) Deceleration ropes
D) Personal fall arrest systems
C) Deceleration ropes
Deceleration devices are part of fall arrest systems but are not a standalone fall protection system.
What does L.A.F.T. stand for in fall protection?
A) Load capacities, Arrest systems, Fall distances, Training
B) Ladder safety, Anchors, Fall prevention, Testing
C) Lifelines, Aerial lifts, Fall protection, Termination
D) Load limits, Anchorage, Fall distance, Tools
A) Load capacities, Arrest systems, Fall distances, Training
L.A.F.T. is a safety mnemonic covering key fall protection elements.
What is the primary purpose of a lanyard in a fall protection system?
A) Connect the worker to a lifeline or anchor point
B) Act as a backup rope
C) Secure tools and equipment
D) Prevent lateral movement
A) Connect the worker to a lifeline or anchor point
Lanyards link harnesses to secure anchor points to prevent falls.
Which of the following is TRUE about aerial lift safety?
A) Workers do not need to wear fall protection
B) Ladders can be used to increase height in the lift basket
C) Lanyards must be attached to the boom or basket
D) Body belts are prohibited on aerial lifts
C) Lanyards must be attached to the boom or basket
Workers must be secured to the lift’s boom or basket to prevent falls.
