Each of the measured parameters like load weight, working radius, control limit,angle and extension of the crane boom, etc will then further be displayed in the operator's cabin. It controls the lifting equipment to function as per the manufacturer's suggested safe load charts. In some cases, the device will physically lock out the machinery in circumstances it determines to be unsafe. It alert the operator if the lift is exceeding the safe operating range. Load Moment Indicator(safe load indicator or Crane computer) is a device which is installed on various sorts of cranes like mobile, crawler, tower, gantry, portal, marine and offshore crane. If you are new to crane operation and require the help of a professional, contact us today to learn more about our top-rated crane rigging and lifting services.What's the load moment indicator system ? Understanding your equipment is the key to a safe and successful construction job. Crane operators should check if the machine comes with a guide, and refer back to it before each job. hC = Lifting height multiplied by the capacityĭepending on the specific type of crane you are using, this piece of equipment may come with a convenient crane capacity chart, which will allow you to estimate the crane load capacity without extensive calculations.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.

Crane load radius