Question

1. what type of ladder can be adjusted to fit into a stairwell? a. stepladder b. articulated ladder c. straight ladder d. extension ladder 15. the first step when setting up a straight ladder is to a. grasp a rung at the upper end with both hands. b. raise the top end and carefully walk forward. c. brace the lower end against a step or other object. d. check the angle, height, and stability at the top and bottom. 16. which of the following support equipment do contractors sometimes use for working on ceilings? a. trestles b. sawhorses c. pump jacks d. corner brackets 17. which of the following support equipment is commonly used to reach the side walls of a house during siding or painting operations? a. trestles b. pump jacks c. roofing brackets d. corner brackets 18. which of these is an advantage that metal scaffolding has over wood scaffolding? a. it can be rented as needed. b. it is fixed in place at all times. c. it is heavier in weight than wood scaffolding. d. it takes up less space than wood scaffolding. 19. which of the following is a general ladder safety rule? a. never place a ladder in front of a downspout. b. always inspect ladders and keep nuts and bolts tightened. c. never use a laminated stepladder. d. always make sure a wood plank as a scaffolding plank. 20. when using a stepladder, make sure a. the ladder stabilizer can be bolted to the edge of a roof by three inches. b. the top step extends above the edge of the ladder. c. the spreader is locked into place. d. tools are always placed on the top step.

Explanation:

1. Articulated ladders can be adjusted to fit into a stairwell due to their flexible design.
2. Bracing the lower end against a step or other object is the first - step in setting up a straight ladder for stability.
3. Trestles are sometimes used by contractors for working on ceilings as a support.
4. Pump jacks are commonly used to reach the side walls of a house during siding or painting operations.
5. Metal scaffolding can be rented as needed, which is an advantage over wood scaffolding.
6. Always inspect ladders and keep nuts and bolts tightened is a general ladder safety rule.
7. When using a stepladder, the spreader should be locked into place for stability.

Answer:

1. b. articulated ladder
2. c. brace the lower end against a step or other object.
3. a. trestles
4. b. pump jacks
5. a. It can be rented as needed.
6. b. Always inspect ladders and keep nuts and bolts tightened.
7. c. the spreader is locked into place.