Adams, Henry · London, New York [etc.] Longmans, Green, and Co. · leaf 127
112 THE MECHANICS OF BUILDING CONSTEUCTION the rafters. In order to find the value of these virtual forces takemoments about the junction of the tie with the rafter, then virtual £ , J _ (11Z> — 1 X its leverage) — (la — 2 X its leverage). ~ leverage of 1—la … EXAMPLES FOR PRACTICE 113 Having obtained this force, 3—Sa and 11—11& may be readily found,and the operations may be repeated for the other side ; in this case asthe loading is symmetrical the virtual forces will also be symmetrical.The frame diagram, Fig. 367, may now be drawn out, and it will…
Building · Structural analysis (Engineering)
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