What is the hazard of using concrete blocks for "cribbing?"
Correct Answer:
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Q70: Economic impact analyses have shown what system
Q71: Pan-type treads are hollow
A)to make them light-weight
B)to
Q72: The design safety factor for scaffolds is:
A)3
B)4
C)5
D)6
Q73: Specified scaffold plank overhang is
A)less than specified
Q74: Tiebacks are
A)an alternative to cornice hooks
B)a secondary
Q76: A home-made ladder uses 2x4 lumber for
Q77: Which of the following is not a
Q78: What is the acceptable alternative to using
Q79: The design safety factor for scaffold suspension
Q80: Indicate scaffold plank overhand specifications by drawing
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