Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 431
is fountl;but as the valley a.s shown in the plan figure, Fig. 22, projects bevondpoint 2 before it intersects the outside of the plates, the distance from2 to 1 in the case of the valley will have to be measured outwards from2, as shown from2tol in Fig. 23;and at the pointthus found thethickness… … -I of jacks againsthip or valley Fig. 25. Steel Square Applied to Jack Rafter to Find Bevel forFitting against Side of Hip or Valley. fit the top end against the ridge. The figures on the square are 17and 19j. The 17 represents the length of the plan line of the hipor valley for a foot of run,…
Architecture · Building · Carpentry
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