Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 197
^ersquare foot of roof surface: Sheathino;: Boards, 3 to 5. Shingling: Tin, 1; wood shingles, 2 to 3; iron, 1 to 3; slate, 10; tiles, 12 to 25. Rafters: 1.5 to 3. Purlins: Wood, 1 to 3; iron, 2 to 4. Snow Loads. The weight of the snow load that may haveto be borne depends, of course, on location.… … (3) \L (6) leooo ^^ Fig. 16. which it blows to the direction of the wind. A horizontal windblowing at 90 miles per hour produces a pressure of about 40pounds per square foot on a surface perpendicular to the wind,while on surfaces inclined, the pressures are as follows: 10° to the horizontal, 15…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
