Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 501
The effect of this upward force is a tension on a por-tion of the braces, according to the position of the weight; but as braces, fromthe manner in which they are usually connected with the frame, are not capa-ble of opposing any force of extension, it follows that the only resistance isthat which… … Fig. 1143 Fig.1144. Fig. 1145. portion of the load W be transferred to each point of support inversely propor-tionate to the distances of the weight from each support. The above trussesare not prepared to transfer this weight to but one support. To remedy thedifficulty, it will be necessary to add…
Mechanical drawing
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