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Question:

What a crane is .........?

.......rated by the ________ weight it will lift at a ________ radius and ________ boom length.A. Maximum; minimum; maximumB. Minimum; maximum; maximumC. Maximum; minimum; minimum

Answer:

All maximum. On some of the older cranes it's written on a plate: so many tonnes at so much radius etc. In the really good old days a pointer needle was on the side of the jib pointing to a scale in tonnes, variable as the jib went in/out/up/down. If you think about it, there's no other way to rate a crane apart from its maximum performance. Hope this helps.
It is Maximum weight, Minimum Radius, Minimum boom length
C. Maximum; minimum; minimum A Crane is rated by the MAXIMUM weight it will lift at a MINIMUM radius, usually 10 feet from the house pivot center, and the MINIMUM Boom Length. Wingman

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