What is the Capacity or Maximum Rated Load?

An overhead crane’s capacity is the maximum load which may be applied to the crane in a particular working configuration, and under a particular condition of use.

When the manufacturer comes on-site to provide a consultation, they can calculate the capacity based on their understanding of:

• The size and weight of the material that you’ll be lifting
• Below-the-hook lifting devices that may need to be used
• Single hoist or double hoist configuration
• Any other considerations for future crane usage or capabilities

A crane that requires a large capacity, a large span, or severe service classification, may require a double girder design—meaning there are two beams that make up the bridge. These girders can be designed in a rigid welded steel box girder design for added reinforcement. This type of setup will be the most expensive, as there are significant increases in labor and material charges to weld and fabricate the girders.

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