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The carpenter's and joiner's hand-book: containing a complete treatise on framing hip and valley roofs. Together with much valuable instruction for all mechanics and amateurs, useful rules, tables, etc. ... Illustrated by thirty-seven engravings (1863)

Holly, H. W. (Henry Wells) · Norwich, Conn., Published by H. W. Holly · leaf 23

An illustration from The carpenter's and joiner's hand-book: containing a complete treatise on framing hip and valley roofs. Together with much valuable instruction for all mechanics and amateurs, useful rules, tables, etc. ... Illustrated by thirty-seven engravings, 1863, leaf 23
n thatthe down bevel is different on each jack,from the curve, but the same from a straightline, from point to point of a whole rafter. 10. A quick and easy way to find thelengths and bevels of common rafters. Suppose a building is 40 feet wide, andthe roof is to rise seven feet. Place yoursteel… … 11. The length of the rafter will be froma to 5, on the edge of the board. Always buya square with the inches on one side divided HAND-BOOK. 19 into twelfths, then you have a convenientscale always at hand for such work as this.The twenty inches shows the twenty feet,half the width of the building;…

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