Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 99
ling joists should be J in. deep per foot span. The trimming joist is madeJ in. thicker for every common joist carriedby the trimmer. A rough rule used someyears ago was to fix the depth of the joistsat one-sixteenth of the clear span, or j in. toeach foot between the bearings. TheEcclesiastical… … Fig. 361.—Joists supported by Wall Plate builtin Wall. same respective bearings. By the rough rule of one-sixteenth the distance between the bearings, the depth for an 18-ft. span should be :— 18 x 12 . Yq = 13^ m. If, however, the thickness of the joist istaken to be 3 in., the strength of the…
Carpentry · Joinery
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