Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 435
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
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
