Scaffold

Question 1

A suspension scaffold consisting of a platform essentially supported by horizontal and parallel ropes with a vertical pick-up is a?

Answer 1

Catenary scaffold.

Question 2

When using scaffolding boards, the space between the boards cannot be more than:

Answer 2

1 inch

Question 3

Scaffold platforms and walkways shall be at least how wide?

Answer 3

18 inches

Question 4

The maximum distance from the face for outrigger scaffolds shall be:

Answer 4

3” inches

Question 5

Each end of a platform must extend over the centerline of its support at least:

Answer 5

6” inches

Question 6

A scaffolding platform longer than 10 feet shall not extend over its support more than:

Answer 6

18” inches

Question 7

Overlapping scaffolds must overlap each other by:

Answer 7

12” inches

Question 8

Wood platforms may not be painted so as to cover the wood finish, but they can have:

Answer 8

Wood preservatives and slip-resistant finishes applied

Question 9

Scaffold components manufactured by different manufacturers:

Answer 9

Shall not be intermixed

Question 10

Scaffolds must be assembled:

Answer 10

As per manufacturer’s recommendations

Question 11

Supported scaffold poles shall bear on:

Answer 11

Base plates and mud sills

Question 12

Defective ropes on scaffolds shall be:

Answer 12

Replaced

Question 13

When hook-on and attachable ladders are used on a supported scaffold more than 35 feet high, they shall have rest platforms at what maximum vertical intervals?

Answer 13

35’ Feet

Question 14

Steps accessing a scaffolding platform shall have a minimum width of:

Answer 14

16” inches

Question 15

The minimum clearance between scaffolds and insulated power lines with less than 300 volts shall be:

Answer 15

3’ Feet

Question 16

Employees shall be prohibited from working on scaffolds covered with snow, ice or other slippery material, except?

Answer 16

For removal of such materials

Question 17

Scaffolding platforms shall not deflect more than how much of the span when loaded?

Answer 17

1/60

Question 18

Each employee on a scaffold must be protected from falling when the scaffold is how far above the lower level?

Answer 18

10 Feet

Question 19

Guardrail systems shall be installed:

Answer 19

Along all open sides and ends of platforms

Question 20

What is the MINIMUM height for guardrails on scaffolding manufactured after January 1, 2000?

Answer 20

38” inches

Question 21

With Pole scaffolds when platforms are being moved to the next level:

Answer 21

Leave the existing platform undisturbed until new bearers have been set

Question 22

All ladder jack scaffolds shall be limited to light duty and shall not exceed a height of how many feet above the floor or ground?

Answer 22

20’ Feet

Question 23

Wire ropes on catenary scaffolds shall:

Answer 23

Be continuous and not have splices between anchors

Question 24

Scaffold casters and wheels shall be:

Answer 24

Locked with positive wheel and/or wheel and swivel locks

Question 25

Who may supervise the erection and disassembling of scaffolding?

Answer 25

Only employees who are trained and qualified

Question 26

Float or ship scaffolds shall not be used to support more than how many people and a few light tools?

Answer 26

750 LB

Question 27

What is the MAXIMUM permissible span for a 2 x 10 full thickness undressed lumber plank with a working load of 25 psf?

Answer 27

10' Feet

Question 28

Scaffold components must be able to support what without failure?

Answer 28

Its own weight and four times the maximum intended load

Question 29

Each ladder jack scaffold, top plate bracket scaffold, roof bracket and pump jack must be at least how wide?

Answer 29

12 inches

Question 30

What is the maximum horizontal distance from the front edge of a scaffold platform to the face of the work unless guardrail systems are erected along the front edge and/or personal fall arrest systems are used?

Answer 30

14 inches

Question 31

When scaffolding platform are _______ above or below point of access a ladder or stairs must be used not the cross bracing?

Answer 31

2 feet

Question 32

Each employee on a single-point or two-point adjustable suspension scaffold shall be protected by?

Answer 32

Both a personal fall arrest system and guardrail system

Question 33

When horizontal lifelines are used for fall protection on a scaffold, what are they secured to?

Answer 33

Two or more structural members

Question 34

Scaffolding crossbracing is acceptable in place of a midrail when the crossing point of two braces is between _______ and _______ above the work platform?

Answer 34

20” to 30” above the work platform

Question 35

Scaffolding crossbracing is acceptable as a toprail when the crossing point of two braces is between ______ and ______ above the work platform?

Answer 35

38” to 48” above the work platform

Question 36

A toeboard shall be erected along the edge of platforms more than 10 feet above lower levels. A toeboard must be at least _____higher than walking surface with no more than a _____ clearance above the walking surface.

Answer 36

3.5 inches in height with 1/4” maximum clearance

Question 37

Midrails, screens, mesh, intermediate vertical members, or equivalent intermediate structural members shall be installed between the top edge of the guardrail system and the walking/working surface when there is no wall or parapet wall at least?

Answer 37

21 inches high

Question 38

What is the relationship of bearers and runners when using pole scaffolds?

Answer 38

Bearers shall extend a minimum of 3 inches over the outside edge of runners

Question 39

There is a crawling board (chicken ladder) that runs from the eave to the roof peak. What is required at the end of the crawling board?

Answer 39

Ridge hook

Question 40

Catenary scaffold can have no more than how many platforms?

Answer 40

2 Platforms

Question 41

Guardrail systems shall be capable of withstanding, without failure, a force of at least ________ applied within 2 inches (5.1 cm) of the top edge, in any outward or downward direction, at any point along the top edge.

Answer 41

200 pounds

Question 42

Safety nets shall be installed as close as practicable under the walking/working surface on which employees are working, but in no case more than _________ below such level.

Answer 42

30 Feet

Question 43

Where scaffolds must be used in areas that the employer can demonstrate are so narrow that platforms and walkways cannot be at least 18 inches (46 cm) wide, such platforms and walkways shall be as wide as feasible, and employees on those platforms and walkways?

Answer 43

Shall be protected from fall hazards by the use of guardrails and/or personal fall arrest systems.

Question 44

What is the maximum scaffold working distance from the face for plastering and lathing operations?

Answer 44

18 inches

Question 45

What is the first thing you do when setting scaffolds closer than the minimum distance allowed to a power line?

Answer 45

Notify the power / utility company

Question 46

Diagonal bracing in both directions shall be installed across the entire outside face of all?

Answer 46

Double- and Single-pole scaffolds

Question 47

The maximum space between intermediate ties on scaffold with a 36” base?

Answer 47

26'