NCCCO Rigger 1 Study Questions with

Copyright © KAYLIN / ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, Copyright ©Stuvia International BV 2010- Page 1/6

NCCCO Rigger 1 Study Questions with Correct Answers

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

through 26 wires per strand

• How often should a synthetic web sling be inspected? - ANSWER✔✔-Each day before use
• Which considerations should be given to suspend lifting operations with a mobile crane? -

ANSWER✔✔-Winds in excess of 35 mph

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

ANSWER✔✔-Abrasion

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

sling from service? - ANSWER✔✔-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? - ANSWER✔✔-Competent person

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

ANSWER✔✔-Side pull

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

Breaking strength

• A non-shouldered eyebolt is primarily designed for lifting in which plane ? - ANSWER✔✔-Vertical 1 / 2

Copyright © KAYLIN / ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, Copyright ©Stuvia International BV 2010- Page 2/6

• 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? - ANSWER✔✔-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? - ANSWER✔✔-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? - ANSWER✔✔-A2+B2=C2 look at paper

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

• Where would you measure to check the diameter of wire rope? - ANSWER✔✔-Across the crowns
• How is the working load limit of slings determined? - ANSWER✔✔-Divide the breaking strength by

the design factor

• What is the formula used to find volume of a rectangle? - ANSWER✔✔-Length x height x width
• The tag on a synthetic web sling shall have what required information on it ? - ANSWER✔✔-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 ? - ANSWER✔✔-The leg has been over loaded

• Using a cheater pipe on a chain hoist come along what will it give you ? - ANSWER✔✔-More leverage
• / 2