Essentials in the theory of framed structures . ?0 +fg Z f3/g 4 +% 6 -^3/g 8 -i-3/g 10 ?/?% I2| ?<oeb?7=l6dFl braic sum of the quantities in column 8 is 31,916; and the deflection of point 4 is ^1,016,000 A4 = ^-^^—- = m. 29,000,000 Similarly the deflection of point 6 is 22,68;,ooo o . Ae = —-— = m. 29,000,000 Since the design and loading of the truss in this problem areboth symmetrical about the center line, it is obvious that thevertical deflections at the points 8 and 10 are respectively thesame as at points 4 and 2. The horizontal displacement of any point may be obtaine
Essentials in the theory of framed structures . ?0 +fg Z f3/g 4 +% 6 -^3/g 8 -i-3/g 10 ?/?% I2| ?<oeb?7=l6dFl braic sum of the quantities in column 8 is 31,916; and the deflection of point 4 is ^1,016,000 A4 = ^-^^—- = m. 29,000,000 Similarly the deflection of point 6 is 22,68;,ooo o . Ae = —-— = m. 29,000,000 Since the design and loading of the truss in this problem areboth symmetrical about the center line, it is obvious that thevertical deflections at the points 8 and 10 are respectively thesame as at points 4 and 2. The horizontal displacement of any point may be obtained 288 THEORY OF FRAMED STRUCTURES Chap. VII in a similar manner. Suppose that the horizontal displacementof the point i in Fig. 176 is reqmred, when the truss is held fastat the left support and rests on rollers at the right support; asshown in Fig. 175. The loads are assumed, as in Fig. 176; PIand the values of j of column 4, Table I, are therefore appli-cable. Place I lb. at point i, acting horizontally either to theright or left, let us say to the right (as in Fig. 179); compute
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectstructu, bookyear1922
