Building construction and superintendence, by F.E. Kidder ... (1896)
Kidder, Frank E. (Frank Eugene), 1859-1905 · New York, W.T. Comstock · leaf 93
s beingplaced over the joints of the trusses, no transverse strain is pro-duced in the top chord, and the roof is better tied to the walls inboth directions. The use of purlins also permits of smaller sizes 84 BI 1LDIXG CONS TRVC TIOK. for the rafters and the placing of the trusses further apart.… … Fig. 114. If it is necessary to use shallow trusses, the purlins may be placedover every other joint as in Fig. 115. The forms of construction above described are also applicable todeck roofs, and the same principles apply to them as to flat roofs. The ceiling joists will naturally extend from…
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