A scaffold may be either rigidly support or suspended from ropes or cables.
true
false
2. Multiple Choice
30 seconds
1 pt
____________ and aerial platforms provide workers with greater working or walking area and stability than working on ladders.
Toeboards
Walkways
Scaffolds
Hoists
3. Multiple Choice
30 seconds
1 pt
In order to prevent collapse due to overloading, scaffolds are designed to carry times their maximum intended load.
2.5
3
3.3
4
4. Multiple Choice
30 seconds
1 pt
For plastering and lathing, the horizontal distance requiring guardrails is increased from _____ to 18˝.
11˝
12"
14"
15"
5. Multiple Choice
30 seconds
1 pt
A guardrail system must be in place if the scaffold is at or above 10´-0˝ before workers are allowed to work from the platform.
true
false
6. Multiple Choice
30 seconds
1 pt
Cross bracing may serve as a midrail if the crossing point is between 20˝ and __________________˝ above the work platform.
30
40
50
60
7. Multiple Choice
30 seconds
1 pt
Unlike wooden ladders, wooden scaffolding planks may be painted.
true
false
8. Multiple Choice
30 seconds
1 pt
Which of the following is not a true statement?
Platforms must be fully decked with gaps no greater than 1˝.
Platforms must not deflect more than 1/60 of the span when loaded.
Wooden planks must be scaffold-grade.
None of the above.
9. Multiple Choice
30 seconds
1 pt
Because walkways are used only for access to and from the scaffold and are not used as a work level, guardrails are not required.
true
false
10. Multiple Choice
30 seconds
1 pt
When scaffolding is more than four times taller than the minimum base dimension, it must be restrained from tipping by tying, guying, or bracing; also, __________________ can be used to enlarge the base.
walkway
platform
scaffold
outriggers
11. Multiple Choice
30 seconds
1 pt
Roof bracket scaffolds, pump jacks, ladder jacks, and crawling boards are not used in residential construction.
true
false
12. Multiple Choice
30 seconds
1 pt
Two-point scaffolds are the most common type of suspended scaffold and require both guardrail systems and personal __________________ __________________ systems.
fall arrest
stair tower
mobile scaffold
load refusal
13. Multiple Choice
30 seconds
1 pt
Which of the following is not a true statement?
Because suspension ropes are usually attached to motors, which can pull with enough force to break wire cable, suspension ropes and connection hardware must be able to support six times the maximum intended load.
Scaffold suspension ropes and personal fall arrest system lifelines must be protected from burns, sharp edges, and abrasions.
Suspension scaffolds, scaffold components, and personal fall arrest systems must be inspected at noon.
Lifelines and tiebacks must be secured to separate anchor points on structural members.
14. Multiple Choice
30 seconds
1 pt
The greatest danger when working on a suspended scaffold is the failure of suspension components.
true
false
15. Multiple Choice
30 seconds
1 pt
A lanyard in a personal fall arrest system may be attached to a structural scaffold member only on the scaffold manufacturer's advice.
true
false
16. Multiple Choice
30 seconds
1 pt
Vertical lifelines must be fastened to a fixed anchorage point independent of the scaffold that supports a minimum or 4,000 pounds.
true
false
17. Multiple Choice
30 seconds
1 pt
Direct access to or from another surface is permitted only when the scaffold is not more than 14˝ horizontally and __________________˝ vertically from the other surface.
20
30
24
34
18. Multiple Choice
30 seconds
1 pt
The minimum step width on stair towers is __________________ inches except for mobile stair towers, which must have a minimum stair width of __________________ inches.
9 ½; 11 ½
12; 11 ½
16; 12
16 3/4; 11 ½
19. Multiple Choice
30 seconds
1 pt
Which of the following are basic types of aerial lifts.
scissor lift
self-propelled lift
knuckle boom
all of the above
20. Multiple Choice
30 seconds
1 pt
Federal safety regulations do not mandate use of personal fall arrest systems when working on scissor lifts.