Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 206
8 = 1,125;and the horizontal component of F5 = Fg X cos 38° 40 =0.7808 F5.Hence 0.7808 F5 = 1,125, 1 125 or, Fg = - .Ao =^ 1,4:40 pounds. (This same truss is analyzed graphically later.) 24. Notation for Graphical Analysis of Trusses. The nota.tion described in Art. 3 can be advantageously… … Fig. 21 a). Then the two letters onopposite sides of any line serve to denotethat line and the same large letters areused to denote the force acting in thatline. Thus cd (Fig. 21a) refers to themember 12 and CD should be used tostand for the force or stress in thatmember. 25. Polygon for a Joint.…
Architecture · Building
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