Building construction and superintendence, by F.E. Kidder ... (1896)
Kidder, Frank E. (Frank Eugene), 1859-1905 · New York, W.T. Comstock · leaf 94
ODEN ROOFS. 85 of the trusses exceeds 16 feet it will be more economical to supportthe ceiling joists on the tie-beam of the trussed purlins. Types of Trusses for Flat Roofs.—If wooden trusses are tobe used the Howe Truss will generally prove the most economicalfor spans up to 90 feet. For longer… … Fig. 116. The rules which should govern the height and proportions ofHowe and Lattice trusses are given in Sections 10 and 12, andTables I and II will be found useful in making the preliminarydrawings. If the pitch of the roof is parallel with the trusses, as is frequentlvthe case in buildings…
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