portable

Question 1

7.1.1 Straight ladders The numerical length of a ladder shall be marked on the side of the rails within 12 inches of the end of the ladder.

Answer 1

The ladder length shall be marked on each end of each rail.

Question 2

7.1.2 Extension ladders

Answer 2

The ladder length shall be marked at the butt end only of

each rail of the bed ladder.

Question 3

8.5.1 Rules for Portable Ladder Placement

Answer 3

8.5.1 Rules for Portable Ladder Placement.
A. Placed at a window - Tip shall be level with window sill.
B. Placed at a roof - Tip shall be at least 2 feet above the roof or parapet.
C. Placed alongside a fire escape on a building wall - Tip shall be 1 to 3 feet above the fire escape railing.
D. Placed against a fire escape - Tip shall be slightly above the fire escape railing.

Question 4

The butting member places his ——in the center of the bottom rung of the ladder and maintains a downward pressure.

Answer 4

The butting member places his left foot in the center of the bottom rung of the ladder and maintains a downward pressure. His right foot is positioned behind him at a comfortable distance to maintain balance and provide resistance against ladder movement.

Question 5

9.4.2 Portable Ladder Capacities are as follows:

Answer 5

9.4.2 Portable Ladder Capacities are as follows:
A. Collapsible ladders - up to 300 pounds load.
B. Roof, straight and extension ladders (26’ or less) - up to 500 pounds load.
C. Extension ladders (27’ to 35’) - up to 600 pounds load.

Question 6

Hook ladders, in addition to their use as conventional straight ladders, may be used

Answer 6

11.3.3 Hook ladders, in addition to their use as conventional straight ladders, may be used on sloping roofs, to gain access to piers or bulkheads, or any other application where a hanging ladder may be required. To prevent slipping on peaked roofs, set hooks into roof by pulling down on ladder.

Question 7

Examples of ladder defects are as follows:

Answer 7

Examples of ladder defects are as follows:
A. Cracked welds.
B. Loose rungs.
C. Bent rungs or beams.
D. Missing or loose rivets, nuts, or bolts.
E. Discoloration signaling excessive exposure to heat.
F. Broken mechanical lock assemblies on extension ladders.

Question 8

These pulleys usually have a ballbearing center that requires –to– drops of oil once a year.

Answer 8

14.3.2 Pulleys:
A. Pulleys are found on all extension ladders. These pulleys usually have a ballbearing center that requires 1 to 2 drops of oil once a year.The halyards on extension ladders are generally made of manila rope.