Practice Test Geeks(STSC) Safety Trained Supervisor Construction Practice Test
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Cranes, Derricks, Hoists, and Rigging Safety Flashcards

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

Read the first 7 Cranes, Derricks, Hoists, and Rigging Safety flashcards as text

  1. What is the required action when a crane is to be used for a 'critical lift' as defined under OSHA 1926.1431?

    Answer: Prepare and follow a written critical lift plan

    OSHA 1926.1431 requires a written critical lift plan for lifts exceeding 75% of the crane's rated capacity or involving multiple cranes.

  2. A load is being rigged with a choker hitch. Compared to a straight (vertical) hitch with the same sling, how does the choker hitch affect the working load limit?

    Answer: It reduces the WLL because the choker creates a pinch point and angle loading

    A choker hitch reduces the sling's rated capacity, typically to about 75-80% of straight-hitch WLL, due to stress concentration at the choke point.

  3. Under OSHA crane standards, what is the maximum wind speed at which a crane operator is typically allowed to continue operations with a rated load?

    Answer: There is no OSHA wind speed limit; the manufacturer's specifications govern

    OSHA defers to the crane manufacturer's load chart and operational specifications for wind speed limits rather than setting a universal mph threshold.

  4. What condition requires a wire rope to be removed from service per ASME B30.5 if found in any six-diameter length of the rope?

    Answer: Six randomly distributed broken wires

    ASME B30.5 requires removal from service if six or more randomly distributed broken wires are found in any six-rope-diameter length.

  5. When using a jib or luffer attachment on a crane, what additional concern must the rigger and operator account for in the load chart?

    Answer: Load charts change with jib length and angle; a separate jib chart must be used

    Jib attachments have separate rated capacity charts that account for the additional boom length, radius changes, and structural loading on the main boom.

  6. A tag line is used during crane lifts primarily to:

    Answer: Control load rotation and prevent swinging without workers pulling the load directly

    Tag lines allow workers to guide and stabilize a suspended load from a safe distance without standing in the path of a swinging load.

  7. Under OSHA 1926.1416, how frequently must a mobile crane's load-indicating device and boom angle indicator be inspected?

    Answer: Daily before use by the operator

    OSHA 1926.1416 requires operators to conduct a pre-shift inspection of safety devices including load indicators and boom angle indicators before each use.