Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 228
e placed under every other truss only; the intermediate crosstrusses are therefore supported by longitudinal trusses shown byFig. 176. These trusses serve also to give the necessary lateralstiffness to the frame. Fig. 177 shows a detail of the ends of these trusses and the 185 178 STEEL… … ^ i)s ^ ^ ^ N. r <s CO ■N CO ■ ^ bf) 1^ ^ ^ 1 •^ tion, Fig. 178. This elevation has letters indicating the positionsof the different types of purlins shown by Figs. 179 to 182. As there are skylights on this roof, purlins B have specialframing. The regular purlin is A, and D shows the wind 186
Architecture · Building
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