E1 - Use Ladders, Scaffolds and Access Equipment Flashcards
Hangers or stirrups used to support swing stages must be made from:
Mild steel or similar.
What is the minimum clearance for a toe board?
A half inch.
What is the maximum spacing allowed for the supports of scaffold planks if the scaffold is to be used by a bricklayer?
7 feet, 10 feet for lighter works.
Handrails and midrails in the Allround system are automatically set by the rosettes. True or False?
True
The difference between scissor lifts and boom aerial lifts is?
Boom lifts have a much greater reach than scissor lifts.
The scissor lift is mainly indoor use.
What is the maximum slope, vertical to horizontal, that is allowed for a work platform?
1:6 Vertical to Horizontal.
What is the minimum height of a guardrail?
900 mm (36 inch)
To stabilize tube and clamp scaffolds, use:
Face-sway braces and internal braces.
Thrust-out beams supporting swing stages must be counter balanced with weights equal to:
Four times the static load.
Temporary stairs require handrails when there are:
More than 4 risers.
What is the maximum span for a wooden guardrail?
Up to 8 ft for a 2 by 4 and up to 10 ft for a 2 by 6.
Which two grades of Ladders are allowed for Construction use?
Grade 1 - Load rating 250 lb and Grade 1A - Load Rating 300 lb
What are the two basic structural components of a steel scaffolding?
End frames and cross brace.
What is a scissor lift?
A scissor lift is a self-propelled work platform that raises and lowers only in an up and down manner. They may be powered by electricity, propane gas or diesel.
The minimum size used for toeboards is what amount?
1 by 4 (19 by 89 mm)
In a tube and clamp system, the planks are supported by what?
Transoms
The maximum span that a 38 by 140 bearer may have in light duty work is:
900 mm (3 ft)
A full body harness attached to a life line must be used when working on a ladder-jack scaffold higher than how much?
3 m (10 ft)
A stairway must be provided to each new floor before work on that level starts?
Yes, true.
After the first set of tiebacks at or below three times higher than its minimum base dimension, scaffolding should be fastened to the building how often?
Every 20 feet vertically, Horizontally spacing is at a maximum interval of 21 feet.
The minimum overlap is 39 inches (1m) inches for ladders extending up to what length?
36 Feet or 11 meters.
The minimum size that a bearer block is allowed to be is?
2 by 6
Screw jacks or adjustable base jacks may only be extended to two-thirds of their length. True or False?
True
The maximum load on a swing stage suspension rope must not exceed:
One tenth its breaking strength.
Guard rails on scaffolding may be omitted if the work platform is within what distance from the building?
12 inches.
Which kind of Ladder is freestanding?
Step
The maximum spacing of cleats on a sloped ramp is?
400 mm o.c. or 15.6 inches
These lifts are designed to have a reach of 80 feet or more and can extend up to 135 feet or higher. This lift has the greatest reach of all aerial lifts.
What is a straight boom lift?.
Which kinds of sawn wood can be used as scaffold planks?
Douglas fir-larch, hemlock-fir, spruce-pine-fir, or Coast-sitka-spruce. Must also be No. 2 or better and be 2 by 10.
The maximum allowable distance between supports for a manufactured plank used in a ladder-jack scaffold is:
3.0 M or 10 feet
The correct slope for a single os extension ladder is?
4 up the slope of the ladder to 1 Horizontal - 4:1
The type of finish for a wooden ladder is:
Clear finish
A hard tire scissor lift may only be used:
Indoors
Which kind of ladder can be assembled or manufactured on the job site?
Single ladders.
The maximum allowable depth allowed for notches in the side rails of a job built ladder is:
None
What is the minimum amount that a scaffold plank may project beyond its supports?
6 inches or 150 mm
Tube and clamp scaffolds are made of what?
Metal tubes and adjustable clamps.
Are job-built scaffold planks approved by WorkSafeBC?
Not unless a registered professional engineer certifies them.
Spacing for cleats on a single ladder is?
12 each on center
The minimum width of a lumber plank used for a ladder-jack scaffold is how much?
286 mm (11 1/4 inch) 2 by 12
What is the maximum amount that a scaffold plank may project beyond its support?
12 inches. (6 inch minimum.)
What is a swing stage?
Work platform suspended on ropes from thrust-out beams, cornice hooks or other solid anchorage. They are raised and lowered by hoisting equipment.
An 89 by 89 mm upright is required when?
89 mm by 89 (4 by 4) mm are required on an upright when the scaffolding is extended above 20 feet.
What is the best length of nail to use if the ledger is 19 mm? (3/4 of an inch)
57 mm ( 2 and 1/4 inches )
Why should you use transparent protective coatings on a wooden ladder?
So that possible defects will remain visible on inspection.
What is the plumb tolerance when erecting scaffolding?
1/4 Inch in 10 feet. Scaffolds must be square and correct dimensions.
The Allround scaffolding system is different how?
It uses a rosette and wedge clamp.
The best location on a wooden scaffold for the 2 by 4 guardrail is where?
Inside the edges of the uprights.
Wire rope used to suspend swing stages must provide a safety factor of not less than?
10
How high should the ladder project above the level of landing to which it provides access?
3 ft or 900 m.
A guarded rest landing must be at every __ ft? for vertical ladders on a building site?
9 m (30 ft)
The maximum distance between the horizontal building ties is?
6.4 m or 21 feet.
Mudsills must be no smaller than what dimensions?
No smaller than 2 by 10.
The minimum size for the side rail of a 3m (10 ft) job-built single ladder is:
38 by 89 (2 by 4)
Wooden guard rails may consist of 38 x 89 (2 by 4) material for up to 2.44 (8 ft) spans and 38 x 140 (2 by 6) for spans up to 3 m (10 ft). True or false?
True
The type of nail used in the construction of a wooden scaffolding is what kind?
Duplex.
Ladder jacks must be set up on what kind of ladder?
A heavy duty ladder
What is the minimum width for a swing stage platform?
500 mm (20 inch)
Side rails shall be 38 by 89 (2 by 4) for ladders up to ____?
5 m (16 ft) long
Rolling scaffolds must be used only on floors that are within ___ degrees of level.
Three degrees and free of depressions and obstructions.
What are the requirements before using a scissor lift for the first time?
1) Training from someone qualified
2) Check the maintenance records and controls and look for hazards.
3) Review the operator’s manual.
T R O - (T)raining, maintenance (R)ecords and (O)perator’s manual
How many feet above ground does it take before guardrails are required on all open sides of the platform?
Above 3.0 m or 10 feet.
The minimum overlap is ____? for ladders extending to between 11 m (36 ft) and 15 m (48 ft)
1.2 M or 4 feet.
What is the minimum width of a wooden scaffold plank?
286 mm or 11 and a half inches. (2 by 12)
Scaffolds are designed to support only workers and a suitable amount of equipment and material. True or False?
True
Single-Pole scaffolds are used for what kind of work?
Light duty work only. Double-pole scaffold is used for both light and heavy-duty work.
What are advantages of a Step Ladder?
They are self-supporting, and do not need to lean against a structure for use. They are hinged at the top and can be folded for flat easy transport.
Worksite ladders require 2 by 6 when they begin to reach which height?
7.3 M (24 ft) long
19 mm (3/4 inch) synthetic rope used for suspending a swing stage must have a breaking strength of:
22 kN (5000 lb.)
The minimum required overlap is ___? for ladders extending to between 15 m (48 ft) and 22 m (72 ft)
1.5 M or 5 Feet.
What is a suspended power platform?
Suspended power platforms are swing stages raised or lowered by means other than manual.
The length of the suspension rope must be enough to provide for:
a safe lower landing
