Cyclopedia of architecture, carpentry, and building; a general reference work .. (1912)
American School (Lansing, Ill.) · Chicago, American school of correspondence · leaf 431
ke 12 on blade and 9 on tongue, and step 10 times along the raftertimber; and for the fractional part of a foot (4 inches), proceed as wasshown in Fig. 16 for the rafter of the main roof; but in this case measureout square to the tongue of square No, 1, 4 inches instead of 6 inches.The additional… … Fig. 33. Use of Square to Determine Heel Cut of Valley. stepping 10 times along the rafter timber with 12 on blade and 9 ontongue, will give the full length of the rafter for a run of 10 feet 4 inches.In the intersection of this roof with the main roof, there are shownto be two valleys of different…
Architecture · Building
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