Stairways and Ladders

Temporary stairways used during construction must have landings at least 30˝ deep and 22˝ wide at least every __________________ of vertical rise.

• 9´
• 10´
• 11´
• 12´

At what angle from the horizontal must temporary stairways be installed?

• between 25º and 30º
• between 25º and 40º
• between 30º and 45º
• between 30º and 50º

All risers on a stairway system should be the same height; the maximum variation in height is ½˝.

• true
• false

All tread depth on a stairway system should be the same; the maximum variation in depth is ¼˝.

• true
• false

Stairways with metal pan landings and treads may not be used by workers until they have been filled in with concrete.

• true
• false

Which of the following statements does NOT apply to temporary stairways?

• Metal pan landing and treads can be secured after filling.
• All treads and landings must be replaced when worn below the top edge of the pan.
• Skeleton metal frame structures cannot be used before the temporary treads and landings are secured.
• Temporary treads must be made of a solid material and installed the full width and depth of the stair.

Height of the handrail or of the top rail in a stair rail system is measured from the centerline of the rail to the top of the tread in line with the face of the riser.

• true
• false

Unprotected sides and edges of stairway landings must have a(n) __________________ high guardrail system.

• 32˝
• 42˝
• 20˝
• 50˝

Do not stand on the top or top step of a stepladder.

• true
• false

Side rails of a straight ladder must extend at least 36˝ above the access area.

• true
• false