The standard calculation for maximum crane capacity is (r)(hC)/100.

Measuring the dimensions of this triangle will allow you to achieve an accurate crane load calculation. Elements, which should be measured include the boom, hoist and the ground, which form a triangle. To get a precise crane load calculation, you will need to know the geometry of the machine. These factors will help determine the machine’s ability to hold weight and remain stable during operation. Crane operators should note the type of crane, whether the crane will be mobile or stagnant while carrying the load, and whether a lattice jib will be used during operation.

Numerous factors affect a crane’s ability to hold weight, which is why the smallest mistake in a calculation can lead to costly crane repairs and serious injuries.īefore beginning your calculation, it is important to understand the specific equipment that is going to be used. Continue reading to learn how to calculate the crane capacity of your crane before operation.Ĭrane operators who are not familiar with load calculations should consult a professional before relying on their calculation as a lifting guide. Crane operators must recalculate this amount each time they use this piece of equipment, as it can vary depending on the position of the hoist and the lift range among other factors.Īt Bobcat Contracting, our qualified crane operators provide some of the best crane lifting services in the United States. To safely operate a crane without dropping the load or damaging the machine, it is essential to know the crane capacity.

30 ton lorry crane load chart