Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 438
Fig. 28. Finding Length of JackRafter in ^s-Pitch Roof. … Fig. 29. Method of Determining Length of Jacks Between Hips and Valleys;also Bevels for Jacks, Hips, and Valleys. 18 inches it will become necessary to use two squares; otherwise thetongue as shown at m would not reach the edge of the timber. In Fig. 28 the same method is shown for finding the…
Architecture · Building
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