Official scaffold study guide

Question 1

What is the scaffold capacity factor?

Answer 1

scaffold must support 4 times the intended load.

Question 2

on platform scaffolds construction gaps can be….

Answer 2

1” max

Question 3

The overlap gap for platform must construction must be …….

Answer 3

12” min a supports

Question 4

no ___ on wooden platforms

Answer 4

paint

Question 5

Use only ____ grade wood on Platform scaffold construction.

Answer 5

scaffold

Question 6

Not require to be stamped scaffold grade, and it is up to the competant person to decided if the boards used are safe.

Answer 6

scaffold boards

Question 7

If platforms/walkways cannot be 18” wide, and if the worker could fall more than 10’ _____.

Answer 7

Then the worker must be protected by guardrails and/or PFAS

Question 8

What is the scaffold-to-workforce distance?

Answer 8

14” for most operations

Question 9

What is the scaffold-to-workforce distance for plastering and lathing?

Answer 9

18”

Question 10

Min. platform overhang is ___ over centerline of support unless cleated or otherwise secured from movement.

Answer 10

6”

Question 11

If platform is 10’ long or less, max overhang is ___.

Answer 11

12”

Question 12

If platform overhang is 10’ long or more, max overhang is ___.

Answer 12

18”

Question 13

Platform overlaps are done to create a long platform, what are the requirements?

Answer 13

1. must be over supports, and

2. not less than 12” unless secure to prevent movement.

Question 14

Scaffold mixed components two requirements:

Answer 14

1. must be compatible.

2. Competent person must check it out.

Question 15

If a scaffold has a height to width ratio that is greater than 4:1, than____.

Answer 15

it must be guyed, tied, or braced.

Question 16

If a scaffold is greater than 3 feet wide it must be secured every ___, after 4x the base width.

Answer 16

26’

Question 17

If a scaffold is less than 3 ft. wide it must be secure every __ vertically, after 4x the base width.

Answer 17

20’

Question 18

If you chose not to secure a scaffold you must either use___ or ___.

Answer 18

1. Outriggers

2. widen the base

Question 19

A designer is required when building scaffolds greater than ___ high, design must be done by a register __.

Answer 19

125’ high, PE

Question 20

Access must be provided when platforms are greater than ___ above or below a point of access.

Answer 20

2 feet

Question 21

Ladders bottom rung is __ max ht.

Answer 21

24”

Question 22

stay __ feet away from power lines.

Answer 22

10 feet

Question 23

Stay ___ away from insulated power lines less than 300 volts.

Answer 23

3 feet

Question 24

stay __ away from un-insulated lines and insulated lines greater than 300 volts.

Answer 24

10 feet

Question 25

If greater than 50 Kv, _______.

Answer 25

stay 10 feet plus .4" per every Kv over 50.

Question 26

Platforms must not deflect more than__ of span when loaded.

Answer 26

1/60th

Question 27

Must be on firm surface except concrete, must inspect surfaces first for holes, must lock --- scaffolds prior to use.

Answer 27

casters

Question 28

When using mobile scaffolds apply force load no more than __ above the base when moving scaffolds

Answer 28

5 feet

Question 29

required to prevent racking or collapse.

Answer 29

Diagonal bracing

Question 30

When using mobile scaffolds rolling surface is no more than ____ out of level.

Answer 30

3 degrees

Question 31

When using rolling scaffolds rolling surface must be free from _____.

Answer 31

pits, holes, and obstructions

Question 32

When using outrigger frames on rolling scaffolds they must be ____.

Answer 32

used on both sides of the scaffold

Question 33

When using rolling scaffolds no employee on any part of the scaffold should extend beyond the ____.

Answer 33

wheels or casters

Question 34

When using rolling scaffolds make the employee aware of the ___.

Answer 34

move

Question 35

Fall protection is required __ when using scaffolds.

Answer 35

10 feet

Question 36

Use __ and __ on suspension scaffolds.

Answer 36

PFAS and Guardrails

Question 37

___ and ___ use PFAS where feasible.

Answer 37

Erectors and Dismantlers

Question 38

Personal fall arrest systems on scaffolds must be attached by lanyard either........

Answer 38

1. to a lifeline (either vertical or horizontal) | 2. to a scaffold structural member

Question 39

According to what osha standard must all scaffolds unless specified by g1 (1)- g1 (vi) have guardrail systems and PFAs that meet the requirements of g4.

Answer 39

1926.451 g (1) (vii)

Question 40

A top rail on a guard rail system must be how high?

Answer 40

38-45 inches

Question 41

Guard rails and PFAs are required on all sides, except the sides where ______.

Answer 41

Work is being done

Question 42

For falling object protection what can be done?

Answer 42

Barricades, screens, nets, and toeboards

Question 43

If the toe boards are not high enough because the material is stacked too high.

Answer 43

1. Use screening from toe board to top rail 2. Use canopies or nets to catch falling objects 3. Barricade area below

Question 44

___ should not be used as a crane

Answer 44

man lifts

Question 45

What are permissible types of loads on man lifts?

Answer 45

personnel, materials, and tools

Question 46

When are equipment modifications allowed on manlifts?

Answer 46

When you have written consent from the manufacturer and tabulated data from a PE or the manufacturer

Question 47

employee must stand firmly, not standing or climbing on the edge of the basket.

Answer 47

man basket

Question 48

No ____ while using lifts. For instance using planks, ladders or other devices.

Answer 48

Jerry rigging

Question 49

No __ to adjacent structures, while working from lifts.

Answer 49

tying off

Question 50

Employee on fully extended man lift. Ran over bricks and the boom flexed and sprung.

Answer 50

worker thrown from basket. 37 feet to concrete floor. Employee dead.

Question 51

The capacity of the rope must be ___ the intended load on suspension scaffolds.

Answer 51

6x

Question 52

Need the super vision of a ___ for rigging a suspension scaffold.

Answer 52

competent person

Question 53

When dealing with suspension scaffolds ___ equipment before each shift.

Answer 53

inspect

Question 54

Suspension scaffold must be tied to a ____ that is capable of supporting 4x the rated load.

Answer 54

Supported system

Question 55

When dealing with Suspension scaffolds ___ must reach completely to the ground.

Answer 55

Lifelines, cables

Question 56

Must be attached anchorage points capable of holding 5000 lb.

Answer 56

independent lifelines

Question 57

No ____ may be used on suspended scaffolds.

Answer 57

fuel powered equipment

Question 58

Three rules for counter weights.

Answer 58

1. non-flowable material 2. permanently marked with weight 3. securely attached

Question 59

Causes of a scaffold collapse

Answer 59

1. use of screens 2. high winds 3. poor foundation

Question 60

Use ___ on swinging loads

Answer 60

Tag lines

Question 61

Protect suspension ropes from ____.

Answer 61

heat or acid

Question 62

Which type of man lift requires PFAS. Scissor lifts or boom lifts?

Answer 62

All manlifts

Question 63

What are the three types of Scaffolds

Answer 63

a. Supported scaffolds b. Suspended scaffolds c. Man lifts

Question 64

2. Scaffolding hazards are caused by falls. What are the main reasons a person falls. – can steeve eat pizza under furniture

Answer 64

a. Unsafe access b. Planking – weak so it gives away c. Fall protection – lack of d. Collapse – foundation / structural instability e. Struck by – falling tools/debris f. Electrocution – power lines

Question 65

Competent person: Must be trained: Sandy makes snacks

Answer 65

a. Structural integrity scaffolds b. Maintenance requirements, and c. Subpart L, OSHA standard

Question 66

What are the competent persons responsibilities? –

Answer 66

a. Supervise b. Train c. Determine fall protection d. Inspect e. Determine of mixed components can be used

Question 67

What must scaffold training include?

Answer 67

a. Falls b. Falling object hazards c. Power lines d. Scaffold use e. Scaffold load capacities

Question 68

In scaffold construction what must be used?

Answer 68

a. Base plates b. Mud sills must be used in soil or asphalt c. Casters (May be use don concrete)

Question 69

User training requirements include:

Answer 69

a. Fall protection b. Falling object protection c. Power line hazards d. Use of scaffolds e. Handling materials on scaffold f. Load capacities of scaffolds

Question 70

Retraining User requirements:

Answer 70

1. Change in worksite 2. Change in type of scaffold, fall protection 3. Observed inadequacies in worker performance

Question 71

Methods of access:

Answer 71

a. Ladders b. Ramps and walkways c. Prefabricated access d. Direct access

Question 72

Ladders may not be used to increase working height except when?

Answer 72

a. Ladder is placed against structure other than the scaffold. b. Ladder legs must be on the same plank, or otherwise stabilized. c. Scaffold is secured against the force of the ladder. d. Planks are secured to prevent their movement. e. Ladder legs are secured to prevent slippage.

Question 73

If employees use mobile scaffolds:

Answer 73

a. Surface must be level b. Max height to base is 2:1 c. Outriggers used on both sides

Question 74

Employees must be trained in PFAS on scaffolds.

Answer 74

a. Anchorage b. Lifeline c. Lanyard d. Body harness

Question 75

Manlifts requirements:

Answer 75

a. Train operators b. Keep operators manual near by c. Inspect equipment prior to use d. Inspect area above and around e. Set up – level firm f. Move when platform is lowered

Question 76

Suspension scaffolds | .

Answer 76

a. Need competent person for rigging b. Inspect Equipment before each shift c. Support system must e tied to sound member that can hold 4x the rated load d. Lifelines and cables to the ground. Independent lifelines and hoist cables must reach the ground.