Cyclopedia of architecture, carpentry, and building; a general reference work .. (1912)
American School (Lansing, Ill.) · Chicago, American school of correspondence · leaf 441
onal 13| will indi-cate the length of the seat of the valley for 12 feet of run, and there-fore for one foot it will be 13^ inches. Now, by taking 13^ on theblade for run, and 12 inches on the tongue for rise, and steppingalong the valley rafter timber 12 times, the length of the valleywill be… … Fig. 39. Method of Finding Length andCuts of Octagon Hips Intersect-ing a Roof. 367 26 THE STEEL SQUARE foot, all the timbers on the slope of the roof can be measured. Bevel2, shown in this figure, is to fit the valleys against the ridge. Bydrawing a line from w square to the seat of the valley to…
Architecture · Building
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