Hicks' builders' guide : comprising an easy, practical system of estimating material and labor for carpenters, contractors and builders .. (1910)
Hicks, Isaac Perry, 1856- · New York : David Williams Company · leaf 137
ed might chance tomake. Bear in mind that A E is the length of com- THE BUILDERS GUIDE. 135 mon rafter. B C is not the length of jack, as somemight suppose, but the rise of jack; A C is the lengthof jack. The down bevel is the same as that of thecommon rafter. To find the bevel across the back,set… … B C Fig. 97.—Plan of Corner Portion of a Roof Having Two Pitches. the top of jack. B G is also the length of jack, andwill be found to be the same as A C. When the bevel of the jacks is known all that isnecessary is to square up the rise of each jack fromthe base line of common rafter A D to the…
Carpentry · Building
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