LINE C TOOLS AND EQUIPMENT

What is the maximum allowed height for a rolling scaffold that is being moved by workers who are on the scaffold?

1 1/2 times its minimum base dimension

What is the correct incline of an extension ladder resting against a building?

1 ft. horizontal to 4 ft. vertical

What is the maximum load that should be imposed on a rope for rigging?

1/5th of its breaking strength

What is the minimum height of a guardrail?

1020mm (40in.)

What is the maximum gap allowed under a toe-board?

13mm (1/2in.)

What is the minimum amount that a scaffold plank may project beyond its supports?

150mm (6in.)

What is the maximum slope, vertical to horizontal, that is allowed for a work platform?

1:5

The sound or light signal for "RAISE" is

2 bells or flashes

What is the minimum width allowed for a work platform?

2 plank widths

What is the maximum allowed height for a rolling scaffold that is being moved by workers other than those on the scaffold?

2 times its minimum base dimension

Correctly installed cable clips will reduce the breaking strength of wire rope by how much?

20%

What is the maximum spacing allowed for the supports of scaffold planks if the scaffold is to be used by a bricklayer?

2100mm (7ft)

What is the minimum nominal width of a wooden scaffold plank?

235mm (9 1/4 in.)

What is the minimum clearance from any energized overhead power lines?

3 m (10ft.)

What is the maximum height of a rolling scaffold?

3 times its minimum base dimension

What is the maximum amount that a scaffold plank may project beyond its support?

300(12in.)

At what height does a scaffold require a guardrail or some alternate form of fall protection?

3000mm (10ft)

What is the centre-to-centre spacing of the cleats on a single ladder?

300mm (12in.)

What is the minimum size for the side rail of a 3 m (10 ft.) job-built single ladder?

38×89mm(2×4in.)

The sound or light signal for "ALL CLEAR" is

4 bells or flashes

What is the correct slope for single or extension ladders?

4 up the slope of the ladder to 1 horizontal

Up to how much will nylon rope stretch when loaded to the breaking point?

40% of original length

To prevent cross-bow loading, what is the maximum angle between any two slings at a shackle?

45 degrees

What is the maximum pull angle that shoulder eyebolts are able to withstand?

45 degrees to the vertical

What is the mechanical advantage of a block and tackle with two sheaves on the fixed block and two sheaves on the travelling block?

4:1

How much can sharp bends and knots reduce the strength of a rope by?

50%

What is the recommended safe lifting sling angle (from the horizontal)?

60 degrees

What is the minimum grade of chain that can be used for overhead hoisting?

80

When using two slings to hoist a load, at what angle to horizontal is the stress on the slings the least?

90 Degrees

What is the minimum distance that a single or extension ladder is required to project above the level to which it gives access?

900 mm (3 ft.)

Where is the safety system located on the block and tackle?

A block and tackle has no safety system

Which materials handling equipment is commonly known as a pallet truck?

A manual forklift

What best describes an elevating work platform?

A platform that self-elevates

What is the safety system found in the Tirfor?

A shear pin must break and seize the load when overloaded.

When using two slings to hoist a load, what happens to the sling stress as the sling angle to horizontal changes?

As the sling angle decreases, the sling stress increases.

What is required when placing an end frame on a wooden mud sill?

Base plate

What type of synthetic web sling has metal triangles of equal size on each end?

Basket web sling

What can result from sudden stops or the wire rope being pulled through tight sheaves or winding on too small of a drum?

Bird caging

Which knots forms a non-slip loop?

Bowline

Casters for steel scaffolds must have what?

Brakes

How is the size of a jack designated?

By capacity

What type of protective finish can be used on a wooden ladder?

Clear finish

What are used to connect the basic units for scaffold over one unit high?

Coupling pins

The travel signal shown below is used for what type of crane?

Crawler crane

When lifting a bundle of pipe horizontally with slings, which hitch is recommended?

Double-wrap basket hitch

What feature does the OHS Regulation require on all trolleys?

Drop stops

What are the two basic structural components of welded steel frame scaffolding?

End frame and cross brace

Choker hitches are a good choice when you need to increase the sling capacity.

False

Longer extension ladders have a shorter overlap.

False

The maximum depth allowed for notches in the side rails of a job-built ladder is 1 in.

False

When you have gotten the aerial lift into position to work from, you should connect your lanyard to the adjacent structure or equipment you are working on.

False

What style of hook is designed so the throat fits between the links of a chain?

Grab

What classification of ladders may be used for construction purposes? (Grade x?)

Grade 1

Besides allowing the rigger to quickly connect a choker hitch to a load, what other purpose does the design of a choker hitch serve?

It protects the sling from sharp ends at the choker point.

What is the safe and proper procedure if during a hoist the load tilts more than 5 degrees?

Lower the lift and rearrange the rigging

Tube and clamp scaffolds are made of

Metal tubes and adjustable clamps

What type of manila rope has one or more coloured strands?

No. 1 grade

Which type of rope is usually pure white, soft, pliable, and smooth to the touch?

Nylon

The sound or light signal for "STOP" is

One bell or one flash

Tag lines should be used to control loads because they allow control from where?

Out from under the load

What type of crane is referred to as a gantry or bridge crane?

Over head travelling crane

What is a rigging softener?

Pad used to protect a sling from the sharp corners of a load

What is it called when continuous pounding of a wire rope causes the strands to become flattened, distorted, and brittle?

Peening

Which of the ropes listed below is the strongest?

Polyester

Which type of dry rope has the best electrical insulating properties?

Polypropylene

How should you remove new rope from its shipping coil?

Pull from inside of coil

Which, knot, hitch, or bend, would you use to join two ropes of the same diameter together?

Reef knot

How are connections made on the Allround scaffolding system?

Rosette and wedge

Which type of elevating work platform can only move vertically?

Scissor lift

What must be used to level a scaffold on uneven terrain?

Screw jack

What is the term to describe the displacement of wires and strands as a result of wire rope rubbing against itself or another object?

Scrubbing

When several slings are to be attached to a single hook, what is used to make the connection to the hook?

Shackle

Which knot, hitch, or bend would you use to join a large-diameter rope to a small-diameter rope?

Sheet bend

What type of eyebolt is illustrated in the graphic below?

Shoulderless eyebolt

What is the name of the hinged arms between the two sections of a stepladder?

Spreaders

Which of the following ladders is free-standing?

Step

When steel scaffolds are fitted with casters, what other component is required?

Sway brace

What design feature gives the boom lift a large range?

Telescoping sections

Which lifting device is designed to pull in all positions, uses self-energizing jaws, and has an unlimited amount of cable travel?

The Tifor

Which lifting device is designed for vertical lifting but is limited in any horizontal application?

The chain fall

Which lifting device is designed for short vertical lifts as well as horizontal pulls?

The come-along

What part of the loop must the U-bolt part of a cable clip grab onto?

The dead end of the rope

What determines the number of cable clips required for a connection?

The diameter of the rope

How can the mechanical advantage of a pulley system be described?

The effort distance compared to the resistance distance

What is the safety feature found on a cable-type come-along?

The handle bends when overloaded

In wire rope terminology, what does "one rope lay" refer to?

The lengthwise distance for one strand revolution

What happens if you hoist an object with the centre of gravity above the lifting points?

The load could topple

If a load is rigged with the centre of gravity off to one side, what will happen when it is hoisted in the air?

The load will tilt until the centre of gravity is directly below the hook.

What is meant by the term centre of gravity?

The point at which and object will balance

What is it that enables both of the threaded rods in a turnbuckle to simultaneously tighten or loosen while turning the sleeve in one direction?

The threads are left handed at one end and right handed at the other.

What is the definition of the term mechanical advantage?

The use of tools or mechanical devices to multiply force

The sound or light signal for "LOWER" is

Three bells or flashes

On what steps of a step-ladder must the worker not stand to work?

Top TWO steps

Generally, which type of overhead travelling crane has a higher lifting capacity?

Top running

What group of cranes are immobile and commonly used on high-rise construction sites?

Tower cranes

What type of sling is best for loads that are abrasive or hot and require a wide bearing surface?

Triangle end metal mesh sling

Which knot acts like a pulley for tying down a load?

Truckers knot / hitch

Even though the elevating work platform is fitted with guardrails around the platform, you are still required to wear a body harness.

True

Sections must be secured together when the scaffold is higher than one unit.

True

In what conditions are ropes are best stored?

Well ventilated

What is the maximum allowed slope of the floor when using a rolling scaffold?

Within 3 degrees of level

What does the abbreviation WLL stand for?

Working load limit

When knot tying, what do you call the portion of the rope that forms the loop?

bight