Cyclopedia of architecture, carpentry, and building; a general reference work .. (1912)
American School (Lansing, Ill.) · Chicago, American school of correspondence · leaf 428
cover. For this additional length, take 6 inches on the blade(it being ^ a foot run) for run, and take ^ of 9 on the tongue (which is4^ inches), and step one time. This, in addition to what has alreadybeen found by stepping 13 times with 12 and 9, will give the full length of the rafter. The square… … Fig. 18. Method of Laying Out Hips and Rafters forRoofs of Various Pitches over Square Corner. 354 TH]E STEEL SQUARE 13 timber for the plumb cut. Square No. 1 is shown applied with 12 onblade and 9 on tongue for the length of the 13 feet. Square from thiscut, measure 6 inches, the additional inches…
Architecture · Building
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