Cyclopedia of architecture, carpentry, and building : a general reference work . W Fig. 15. These equations may be solved for the unknown forces; thus fromthe first, 0866^ ^~^^* Substituting this value of Fj in the second equation, we get X F, + F, .= 100, or, hence and 100 F = 100 9 oo = pounds,Fi=: X = FOR PRACTICE. 1. Solve Ex. 1, Art. 16 algebraically. (First determinethe angle which the inclined rope makes with the horizontal; youshould find it to be 63° 26.) 156 STATlOfe 23 2. Solve Ex. 2, Art. 16 algebraically. 3. Solve Ex.

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Cyclopedia of architecture, carpentry, and building : a general reference work . W Fig. 15. These equations may be solved for the unknown forces; thus fromthe first, 0866^ ^~^^* Substituting this value of Fj in the second equation, we get X F, + F, .= 100, or, hence and 100 F = 100 9 oo = pounds,Fi=: X = FOR PRACTICE. 1. Solve Ex. 1, Art. 16 algebraically. (First determinethe angle which the inclined rope makes with the horizontal; youshould find it to be 63° 26.) 156 STATlOfe 23 2. Solve Ex. 2, Art. 16 algebraically. 3. Solve Ex. 3, Art* IG algebraically. IV. ANALYSIS OF TRUSSES; HETHOD OF JOINTS. 18. Trusses. A truss is a frame work nsed principally tosupport loads as in roofs and bridges. Fig. 16, 25, 26 and 27represent several forms of trusses. The separate bars or rods, 12,28, etc. (Fig. 16) are called memhers of the truss and all the partsimmediately concerned with the connection of a number of mem-bers at one place constitute a ;V^f;?#. A pin joint is shown inFig. 15 ((?) and a riveted joint in

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Keywords: ., bo, bookcentury1900, booksubjectarchitecture, booksubjectbuilding