Practice Test GeeksNCCCO (National Commission for the Certification of Crane Operators) Practice Test
← All NCCCO Flashcard Decks

Rigging Fundamentals and Hardware Flashcards

7 cards from real NCCCO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Rigging Fundamentals and Hardware flashcards as text

  1. When a sling is used in a choker hitch, the rated capacity compared to a straight vertical hitch is:

    Answer: Reduced to approximately 75%

    A choker hitch reduces sling capacity to approximately 75% of the vertical hitch rating due to the bend angle created at the choke point.

  2. What is the primary purpose of a shackle's safety pin or bolt?

    Answer: To prevent the pin from unscrewing under load

    The safety pin or cotter pin prevents the shackle pin from unscrewing due to vibration or load rotation during a lift.

  3. A spreader beam is used in a rigging configuration primarily to:

    Answer: Keep sling legs vertical and prevent inward compression on the load

    Spreader beams maintain sling legs in a vertical or near-vertical position, preventing compressive forces from being applied to fragile or wide loads.

  4. Which of the following conditions requires immediate removal of a wire rope sling from service?

    Answer: Six randomly distributed broken wires in one rope lay

    ASME B30.9 requires wire rope slings to be removed from service if six or more randomly distributed broken wires are found in one rope lay.

  5. When two slings are used in a basket hitch with a 60-degree angle from horizontal, the tension in each sling leg compared to the load weight is:

    Answer: Greater than half the load weight

    At 60 degrees from horizontal, the sling tension factor exceeds 0.5, meaning each leg carries more than half the total load weight.

  6. What does the term 'proof load' mean for a rigging component?

    Answer: A test load applied to verify the component's integrity before use

    Proof load is a test load—typically twice the working load limit—applied to a rigging component to verify it can safely handle its rated capacity.

  7. A synthetic web sling is discovered to have a cut that penetrates through to the load-bearing yarns. The correct action is to:

    Answer: Immediately remove the sling from service and destroy it

    Any cut penetrating the load-bearing yarns of a synthetic web sling requires immediate removal from service and destruction per ASME B30.9.