Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 355
r 5 by 3U)y f-inchangles with a 16 by f-inch webplate be assumed, and placedas shown in Fig. 97. Theseangles have an area of 3.05square inches each; and amoment of inertia parallel tothe long leg, of 3 18. Then(see Strength of Materials,pp. 48-53), the moment dueto crane reaction is 20 000 X(8.125… … 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 3.18 + 4X 3.05X 7.265=+ ^ j^ = 784.72, 12 ■«- ^ \ 4 784.72 == 6.56 X 3.05 + f X 16 The allowable unit-stress is: 20 X 12P = 24 000 - 110 X —/^(^ = 19 975 pounds per sriuaro…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
