NCCCO Rigger 1 Study Questions

NCCCO Rigger 1 Study Questions | 100% Correct Answers | Verified | Latest

• A wire rope that is a 6x19 classification could have how many wires per strand? - ✔✔15 through 26

wires per strand

• How often should a synthetic web sling be inspected? - ✔✔Each day before use

• Which considerations should be given to suspend lifting operations with a mobile crane? - ✔✔Winds

in excess of 35 mph

• What is the term that best describes surface wear on a wire rope sling to rubbing or sliding? -

✔✔Abrasion

• Which of the following defects discovered during an inspection would cause for removing a wire rope

sling from service? - ✔✔Ten broken wires in one lay

• According to OSHA, each day before being used, all rigging hardware and slings shall be inspected for

damage or defects by a? - ✔✔Competent person

• When the hoist line is not vertical what type of dynamic force is being introduced to the crane? -

✔✔Side pull

• What is the term used to describe the ultimate or maximum load that a sling fails at ? - ✔✔Breaking

strength

• A non-shouldered eyebolt is primarily designed for lifting in which plane ? - ✔✔Vertical

• According to ASME B30.9, (Slings) what is the maximum width of an object that can be placed in the

eye of a wire rope sling? - ✔✔1/2 the length

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• What is the term used to describe a sudden or unplanned loading of the crane when raising or

lowering a load that will increase the stress on rigging and the load? - ✔✔Shock loading

• What formula is used to determine the sling length when you only know the hook height and the

distance from the center of gravity to the pick point? - ✔✔A2+B2=C2 look at paper

• What is the approximate weight of one cubic foot of steel ? - ✔✔480 pounds (lbs)

• Which type of sling is required to have permanent affixed identification tag stating size, grade, rated

capacity for hitch type that can be used? - ✔✔Alloy steel chain sling

• Where would you measure to check the diameter of wire rope? - ✔✔Across the crowns

• How is the working load limit of slings determined? - ✔✔Divide the breaking strength by the design

factor

• What is the formula used to find volume of a rectangle? - ✔✔Length x height x width

• The tag on a synthetic web sling shall have what required information on it ? - ✔✔Name of

manufacturer Rated load for each hitch type and type of material

• One leg of a four leg alloy steel chain sling is longer than the other three; this is possible indication of

what type of damage ? - ✔✔The leg has been over loaded

• Using a cheater pipe on a chain hoist come along what will it give you ? - ✔✔More leverage

• What type of hitches provides maximum contact between the sling and the load? - ✔✔Double wrap

choker/ double wrap basket

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