Cyclopedia of architecture, carpentry, and building : a general reference work . I Anchor BoltHoles kfi f«o°o°ol Fig. 98. Detail of Column. bending moment of 1,569,000 pound- 288 ROOF TRUSSES 75 /«_a = 4X + 4X + ^ j^ = , 12 ?«- ^ \ 4 == X + f X 16 The allowable unit-stress is: 20 X 12P = 24 000 - 110 X —/^(^ = 19 975 pounds per sriuaro Fiff. 99. Detail of Column.

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