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Richey's guide and assistant for carpenters and mechanics : a work of practical information, giving almost every geometrical and practical problem likely to arise in the work of the carpenter, and quick and easy methods for their solution : the use of the steel square, etc., tables showing strength and weight of materials, methods of framing, useful recipes, etc., etc. (1894)

Richey, H. G. (Harry Grant), b. 1868 · New York : W.T. Comstock · leaf 144

An illustration from Richey's guide and assistant for carpenters and mechanics : a work of practical information, giving almost every geometrical and practical problem likely to arise in the work of the carpenter, and quick and easy methods for their solution : the use of the steel square, etc., tables showing strength and weight of materials, methods of framing, useful recipes, etc., etc., 1894, leaf 144
hen the weight is con-centrated at I and 2 : The weight by one-third the lengthof the chord or c b divided by the length oi a b equalsthe strain on the chord or the compression of the top piece ; FOR CARPENTERS AND MECHANICS. 135 the weight equals the strain on the rods ; the weight bythe length of… … square root of the product will be the diameter of the roaallowing 12,000 pounds per square inch in the rod. When two rods carry a given weight, take half theweight and proceed as above. 181—To Find the Strain on the Rods of a Hog Chain Girder.—Rule: Three-tenths of the distributedweight by the…

Carpentry

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