Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry (1921)
Wright, Roydon Vincent, 1876- ed, Little, John G., joint ed, Augur, Robert C., joint ed · New York, N.Y., Simmons-Boardman Publishing Co · leaf 229
may be built of any desired height and placedat any point near the building under construction. Thederrick timbers and fittings may be secured to any of thecorners of the tower and, if needed, two derricks may beapplied to one tower—at diagonal corners. As the buildingprogresses, the height of the… … DERRICKS 223 material in construction work but may be utilized for manyof the same purposes for which the guy or the stiff-legderricks are used. The capacities of these derricks, as in the two other typesalready described, are in proportion to the relative lengthsof the mast and boom. Having the…
Hoisting machinery · Conveying machinery
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