(′klīm·iŋ ′krān)

(mechanical engineering) A crane used on top of a high-rise construction that ascends with the building as work progresses.

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A hoisting device used in the erection of high-rise buildings; a vertical mast is fastened to structural members of the building framework and is moved up as the structure rises during construction; a horizontal boom, equipped

clerestory, 1

with a winch and hoist line, is swung from the top of the vertical mast.

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