How to Measure Working Range in Feet on a Crawler Crane
All cranes are limited to structural integrity and mechanical failure. The crane cannot pick (move or lift) more than it is rated for, and part of that rating is how far away the object is that needs to be picked. There are three ways to measure the working range in feet on a crawler crane.
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Instructions
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Use a measuring tape and measure the distance from the center of rotation of the crane to the object being picked.
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2
Lower the boom of the crane over the object that will be picked and determine the working distance by the boom angle.
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3
If the crawler crane is equipped with a computer, or the LMI, lower the boom of the crane over the object, and the computer will tell you the radius in feet of the working range.
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All of these measurements apply to the capacity chart that can be found in the User Manual located in the crane. This is a chart that tells what the crane is capable of at that radius.
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According to the "Manitowoc" crawler crane manual and the International Union of Operating Engineers, the crane is designed to operate in a level position on a firm, uniformly supporting surface. "Crane operator judgement must be used to allow for dynamic load effects of swinging, hoisting, or lowering, travel, wind conditions, as well as adverse operating conditions and physical machine depreciation." The working range in feet on a crawler will be affected by all of these conditions.
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A professional crane operator will have working knowledge, depth perception and peripheral vision of items on the work site. Knowing how to measure the working range in feet on a crawler crane is part of the everyday operation of the Manitowac crawler crane, hydraulic crawler crane and all mobile cranes.
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