A gross allowance is treated as object capacity
A fictional chart permits a gross suspended mass of four thousand kilograms under the supplied configuration. The hook block, bucket and slings weigh one hundred eighty, three hundred twenty and fifty kilograms respectively. A crew member loads four thousand kilograms of material alone and ignores the accessories. Another divides a different lift equally among four visible sling legs without knowing the center of gravity or stiffness. This written exercise authorizes no movement. Calculate the remaining object allowance for the stated model, identify the unsupported sharing assumption and explain why a successful arithmetic comparison still leaves actual rigging condition, geometry, environment and complete chart restrictions unresolved.
1. What net object allowance follows?
Read the worked answer
Four thousand minus one hundred eighty minus three hundred twenty minus fifty equals three thousand four hundred fifty kilograms under the given model.
2. Why is four-leg equal sharing unsupported?
Read the worked answer
Actual geometry, stiffness, center of gravity and the manufacturer or engineered rating basis determine sharing, not leg count alone.