500 pounds, and thus issufficient with one leg riveted. A 6x6x3/8 must be used forLgL^ a3 the least l/r govorns, but the minimum 3ized angles mayused for all other bracing. 19 Cross Frames: All of the angles of the cross frameswill be of minimum size, as the floor system distributes the3trs33 to… … Fig. 15 is a cross section of astiffener and filler plates. Trytwo angles 6x4x7/l6. A = 4.10. r = 1.93. 1=2(14.30+2.96 x4.19+-3(6.25)2 = 104.54 Fuj. 15 Crass Sec-r/on erf Sfrffeners r = _|i04.54I 16.38 = 2.52 The allowable stress is 16 000 - ■7-°-g || = 13 500 pounds. Therequired area is 214 000/13…
Bridges · Viaducts · Theses
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