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

through 26 wires per strand

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

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

ANS Winds in excess of 35 mph

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

ANS Abrasion

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

wire rope sling from service? - ANS 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? - ANS Competent person

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

crane? - ANS Side pull

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

ANS Breaking strength

NCCCO RIGGER 1 STUDY EXAM

QUESTIONS AND ANSWERS 1 / 2

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• A non-shouldered eyebolt is primarily designed for lifting in which plane ? - ANS 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? - ANS 1/2 the length

• 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? - ANS 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? - ANS A2+B2=C2 look at paper

• What is the approximate weight of one cubic foot of steel ? - ANS 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? - ANS Alloy steel chain sling

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

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

the design factor

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

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

of manufacturer Rated load for each hitch type and type of material

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