Using portions of ITI’s Journeyman Rigger’s Reference Card, determine the total force required to slide the steel based load across the concrete floor to its landing spot. Identify the amount of tension which will be applied to the following items:
Point 1, shackle deadend = _____ lbs.
Point 2, snatch block = _____ lbs.
Point 3, snatch block = _____ lbs.
Point 4, snatch block = _____ lbs.
Point 2 + 4 at column = _____ lbs.
Point 5, snatch block = _____ lbs.
Point 6, snatch block = _____ lbs.
Point 7, snatch block = _____ lbs.
Point 8, floor winch = _____ lbs.
*NOTE : For the purpose of this exercise, assume frictionless sheaves.
Journeyman Rigger’s Reference Card
Happy trails to all my crane and rigging friends,
Mike Parnell
ITI-Field Services
P.S. This article was originally published on The Pro Rigger – Rigging Workshop: Load Skidding.
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