Tpc 318

Question 1

Determine the weight of a 50ft, s15 X 42.9 beam

Answer 1

W= w/ft X L

Question 2

The horizontal force increases as?

Answer 2

The angle called the sling angle becomes smaller

Question 3

If both end of a sling are attached to the hoist hook and a load is suspended from the center of the sling, which hitch is being used?

Answer 3

Basket hitch

Question 4

What is the sorting hook designed for

Answer 4

It has a point designed to fit in holes

Question 5

What is a reason for removing a hook from service and replacing it?

Answer 5

If there is any bend it twist from the plane of the unbent hook

Question 6

If a wire rope is classified as 6 X 37 what does that mean

Answer 6

There and 6 strands , each of which is made up of 37 wires

Question 7

The following factors all affect wire-rope strength, in which one is the D/d ratio important?

Answer 7

Bending the rope over a curved surface

Question 8

When properly installed, speltered and swaged sockets provide how much efficiency

Answer 8

100%

Question 9

What condition should be considered reasons for removing a wire-rope sling from service?

Answer 9

Rope distortion in the form of kinking

Question 10

Grade 80 alloy steel chain is the ONLY chain recommended for overhead lifting applications, it’s identified as

Answer 10

Grade 80 or 800

Question 11

What limit is comparable to the rated load specification for wire rope

Answer 11

Working load limit

Question 12

At what temperature should alloy steel chain be removed from service?

Answer 12

If it has been subjected to 1000 degrees Fahrenheit/ 540 degrees Celsius

Question 13

Metal mesh slings have standard fittings readily available, both types can be used in vertical and basket hitches. But type 1…

Answer 13

Has a slot for use in a choker hitch

Question 14

What is a condition when you should recommend removing a metal mesh sling from service if?

Answer 14

A broken welded joint or broken brazed joint along the edge of the sling fabric

Question 15

What is the strongest of the synthetic fiber ropes and the most popular?

Answer 15

Nylon

Question 16

Describe a thimble

Answer 16

A thimble should be used in the loop called the eye or loop eye, the thimble is a specially shaped metal sling accessory. It maintains a relatively large radius at the end of the eye where the rope would otherwise be pulled into a sharp bend

Question 17

What is damage that may warrant removing the sling from service

Answer 17

Distortion in the form of kinking

Question 18

The tubular cover is color-coded to indicate?

Answer 18

The sling capacity

Question 19

Damage that should be considered cause for removing a synthetic-web sling from service are

Answer 19

Scorching

Question 20

How do manual overhead chain hoist operate

Answer 20

When the operator pulls on the hand chain, it turns a pocket wheel

Question 21

How do gravity operated limit switches in electric wire rope hoists work

Answer 21

The limit switch is activated when the load block comes into contact with a weight or lever at its upper limit of travel. The switch opens the hoists lifting control circuit and interrupts power to the hoist motor

Question 22

What is the difference between underhung and top-running crane lies in?

Answer 22

How the end trucks of the bridge beams are supported

Question 23

When should hoist brakes be checked?

Answer 23

Before each shift, lift the load several inches and stop to make sure that the load block and load do not drift downward, if the braking system holds the load, then lifting can continue

Question 24

What are reasons for removing wire rope from hoist services

Answer 24

Two broken wires adjacent to a socketed end fitting

Question 25

If signaling is required in a crane operation that involves several people…

Answer 25

The operator must respond to a stop signal from anyone

Question 26

Operating practices you should observe when using floor-operated hoists and cranes include the following

Answer 26

Make certain that the load will not contact any obstructions

Question 27

Don’t not use metal mesh slings in which…

Answer 27

The spirals are locked or do not move freely

Question 28

What is one hook turning

Answer 28

In the turning method, one edge of the load serves as the pivot for the turn

Question 29

What should you do before lifting the load

Answer 29

Check the location where it is to be set, make certain that the area is large enough. Set the blocks or other holding devices in place. The load should never be moved to the desired location and then left suspended while the blocks are found and placed

Question 30

How high can scaffolding be

Answer 30

No more than four times the scaffolds shorter base measurements

Question 31

Hydraulic scissor lifts can support what

Answer 31

They can support two workers with their tools and equipment, or a total weight of about 1500lbs

Question 32

What is a lifeline

Answer 32

It’s a rope strong enough to bear the workers weight, suspended from a sound part of the structure being worked on

Question 33

What is a turnbuckle used for

Answer 33

It’s an excellent tool for tightening the wire to the proper tension

Question 34

What should wood ladders not be coated with

Answer 34

Opaque paint, it might obscure unsafe conditions in the wood