Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 429
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. 23. 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 · Carpentry
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