Climbing, Lifting, Rigging and Hoisting Flashcards
When must one equip a full body harness?
- When working at heights greater than 3 meters and not protected by a guardrail
- When working at heights less than three meters but there is an unusual possibility of injury
- Like working above moving water or operating machinery
Who must ensure that all components of your fall protection system are compatible?
Your employer
When must fall protection equipment be taken out of service?
When it has:
- Become defective
- Come into contact with excessive heat or a substance that may cause it to fail
- Stopped a fall.
Where should the back d-ring on a full body harness sit on one’s body?
Between their shoulder blades
When are step ladders often utilized?
For applications at low or medium heights
What is the safe ratio of length to height of an extension ladder?
How far beyond the working destination must an extension ladder extend?
1:4
1 metre
What materials may ladders be made of?
- Fiberglass
- Aluminum
- Reinforced plastic
- Wood
What is used to provide a secure footing for scaffolding?
Mud Sills
What are toe boards?
A vertical barrier at floor level which prevents objects (tools and material) from falling onto workers below
Could the height of a free-standing or rolling scaffold be more than three times the smallest dimension of its base?
No
What should the material used in wood scaffolding be?
Sound, close grained, solid-4-sides wood
What is the first thing to consider when lifting a load?
The weight of the load
What kind of tires do indoor forklifts have?
Solid tires
What is a chain hoist used for?
Vertical lifts of light loads
How should one manually lift an object?
With a straight back, bent knees and lifting with their legs.
It is generally a good idea to keep the object being lifted close to one’s abdomen
Is a lifting technique proper, when one’s back is parallel to the ground?
No, this could result in injury of the lower back
Which Hardware components are used to fasten loads to hoisting equipment?
Slings
Must a thimble be inserted into the eye of a wire rope sling?
No, it is only highly recommended
What is shock loading?
When a material is hoisted suddenly, and a larger than normal force is applied to the rigging equipment.
What are the safety factors respectively, for:
- General rigging and hoisting
- Lifting and transporting workers
- Public elevators?
- 5: 1
- 10: 1
- 20: 1,
When must a synthetic fiber web sling be discarded and destroyed?
When the red core is exposed
If the material used to manufacture a chain sling is not identifiable, may it be used to hoist?
No.
If a chain sling shows signs of stretching must it be discarded?
Yes
What is the effect of sling angle on a load?
A lower angle applies a larger tension force on the sling
What is the recommended minimum safe lifting angle for sling rigging operations?
60°
When hosting, the hook should be positioned over the load’s…?
Center of gravity
In regards to rigging, what is a block?
A device which provides a mechanical advantage and changes the direction of the pulling or lifting Force.
When estimating the sling load for a four leg bridle hitch, what is recommended?
To calculate the load for a two-leg bridal hitch, since the other two legs likely only balance the load.
Does raising a crane boom also raise the load?
What is the intended effect of raising a crane boom?
Yes it does
The intended effect is to bring the load closer to the crane
What happens to a load if a telescoping boom is shortened?
The load is lowered
What is the hand signal for boom up?
An outstretched fist with the thumb pointing up
What is the hand signal for boom down
An outstretched fist with the thumb pointing down
What is the hand signal for hoisting a load?
Right hand index finger pointing up rotating
What is the hand signal for lowering a load?
Right hand index finger pointing down and rotating
Must one use two hands to signal a crane operator to make slow movements?
Yes, slow movement hand signals generally require two hands
When making a simultaneous boom and load hand signal what extra motion is required on top of the normal boom up and boom down hand signals?
Opening and closing of the Fist.
These hand signals is used to move the load laterally and maintain is vertical position
With a telescoping boom what is the hand signal to shorten the boom?
Conversely, what is the hand signal to lengthen the boom?
Shorten = Fists with outstretched thumbs in front of the signalman, thumbs pointing toward eachother
Lengthen = Fists with outstretched thumbs in front of the signalman, thumbs pointing away from eachother