Center of Gravity and Pick-Point Load Share
Load on each of two pick points and the percent imbalance from the total weight, span, and CG offset, with a flag when the CG falls outside the picks. The head rigger and the load weight govern.
Formula and source
load_p1 = W x (span - d1) / span; load_p2 = W x d1 / span; imbalance_pct = |load_p1 - load_p2| / W x 100; cg_outside flags d1 < 0 or d1 > span.
ASME B30.9 (Slings) and ITI rigging practice by name; first-principles statics (moment balance about a pick point).
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