Building construction and superintendence, by F.E. Kidder ... (1896)
Kidder, Frank E. (Frank Eugene), 1859-1905 · New York, W.T. Comstock · leaf 98
economical and effective. In laying out a roof like that shown by Fig. 121, it will generallybe found most economical to divide the trusses so that the purlins(which should always be placed at or near a joint) will not be greaterthan 12 feet apart, and to space the trusses not more than 18… … Fig. 121. cp BUILDING CONSTRUCTION. 52. Roofs with Intermediate Supports.—While a truss, par-ticularly if it has a horizontal tie-beam, acts in general in the sameway as a beam, yet it differs from a beam in that it cannot, as arule, be strengthened by introducing a support between the endbearings.…
Building
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