Hook Load (cont'd)
Calculating the Hook Load
One Attachment Point
To calculate the hook load exerted at one attachment
point, use the Reference Table and Formula 1.
Formula 1:
R = 2 x T x SIN [(180 – θ) / 2]
R = the resultant force, or hook load; this force is exerted on the hook, anchoring and structural support
θ = the angle of change in rope direction
T = the tension exerted on the rope by the cable puller
Note: The total load on the support structure = R + the weight of the sheave.
Greenlee Tools, Inc.
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Sheave with One Attachment Point
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6036 Triple Sheave
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