Adams, Henry · London, New York [etc.] Longmans, Green, and Co. · leaf 126
/ ceiUnq boards Span 2S(f rig. se2 presents no diificulty, and may be drawn out as in Fig. 365. If thesupports are yielding, then bending moments will be produced on therafters, and the stresses will be greatly increased. The frame diagram EXCEPTIONAL FORMS OF ROOF TRUSSES 111 will be as in Fig,… … 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
Building · Structural analysis (Engineering)
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