Where the elevation between two steps is _____ or more, employers must provide a stairway ladder at access points
answer
19inches
question
Always install stairs between __________ from the horizontal
answer
30 and 50 degrees
question
Stairway landings are required to be at least ____ inches deep and 22 inches wide, at every 12 feet or less of vertical rise
answer
30
question
Handrails must accompany a stairway that has ___ or more risers
answer
4
question
Handrails and top rails must be capable of withstanding a load/force of _____
answer
200 pounds
question
How high must a handrail be when measured from the upper surface of the handrail to the tread?
answer
Normally, handrails must not be higher than 37 inches nor less than 30 inches when measured from the upper surface of the handrail to the surface of the tread. However, if the top edge of a stair rail system is serving as a handrail, it cannot be less than 36 inches, nor more than 37 inches, from the upper surface of the rail to the tread.
question
Stairways with four or more risers, or that are higher than _____ inches, must be equipped with at least one handrail.
answer
30
question
Stairways must be between _____ degrees from the horizontal.
answer
30 and 50
question
When stairways are not a part of the permanent structure, what are the dimension requirements for stairway landings?
answer
When stairways are not a permanent part of the structure, the stairway landing must be at least 30 inches deep and 22 inches wide, at every 12 feet or less of vertical rise.
question
The clearance of temporary handrails must be at least _____ inches between the handrail and walls.
answer
3inches
question
What is the working length of a ladder?
answer
The working length of a ladder is the distance between the foot and the top support.
question
What must be done with a damaged portable ladder?
answer
A competent person must inspect ladders for visible defects like broken or missing rungs. If a defective ladder is found, it must be immediately marked as defective, or tagged DO NOT USE, and removed from the jobsite immediately.
question
When portable ladders are used to access an upper landing surface, how far must the ladder side rails extend above the upper landing surface?
answer
When portable ladders are used to access an upper landing surface, the side rails must extend at least three feet above the upper landing surface. When such an extension is not possible, the ladder must be secured, and a grasping device such as a grab rail must be provided to assist workers in mounting and dismounting the ladder
question
Where may warning labels be placed on ladders?
On the top step
On the outside face of one side rail
On the outside face of both side rails
On the top rung
answer
On the outside face of one side rail
question
Portable ladders must be able to withstand ____ times their maximum load.
6
4
2
8
answer
4
question
On what kind of surface should a single-rail ladder be used?
answer
Ladders should be used only on stable and level surfaces unless secured to prevent their accidental displacement. Non-self-supporting ladders should not be used on slippery surfaces unless secured or provided with slip-resistant feet to prevent accidental displacement. Single-rail ladders should not be used.
question
Workers who use ladders higher than _____ feet must receive training on how to inspect ladders and use them properly.
answer
6
question
For a ladder to be considered in position and ready to use, its rungs and steps must be all of the following EXCEPT:
Covered with a slip-resistant coating
Not more than 14 inches apart
Parallel
Uniformly spaced
answer
For a ladder to be considered in position and ready to use, its rungs and steps must be level and uniformly spaced. Ladder rungs and steps must not be spaced less than 10 inches apart or more than l4 inches apart, as measured between the centerlines of the rungs, cleats, or steps
question
When may ladders or ladder sections be fastened together to provide a longer length?
answer
Ladders and ladder sections should not be tied or fastened together to provide longer length unless they are specifically designed for that purpose.
question
What measures must be taken when a ladder used to access an upper landing surface does not extend at least three feet above that surface?
answer
When a ladder used to access an upper landing surface does not extend at least three feet above that surface, the ladder must be secured at the top and a grasping device must be provided to assist workers with mounting and dismounting.
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