Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 277
rangedto suit the arch shown in Fig. 834 ; it is notso clumsy to work, and it requires a thirdnail at d; it is used in the same manner asthe board shown in Figs. 837 and 838, andis identical with it. Fig. 837. rise ; parallel to the edge of the board a lineis then drawn from point a until it… … Fig. 838. V Ifr Fig. 837.—Drawing Curves of Arches with a Board. Fig. 838.—Board used in Fig. 837. Setting Out Curve for Camber Arch. Fig. 837 is an example of a camber archwhose members do not radiate from thecentre of curvature, but from some pointwithin it. The centre lying at some con-siderable…
Carpentry · Joinery
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