The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 325
^4 3-132 :^/=: 1-865. And R : cosin; A/36° 33 36 : ; j k 3-132 : kl 2-564 and Bk2-795 + k I 2-564 = B / = 5-359. 2nd. !»jandBm. 90°-(f (i2 or yij36° 3014 = (i2ior 22m53° 29 46 and sin dl d 53° 29 46 : R : : c^i 2-892 : d 2 3-597and id 12-067-2i 3-597=2« 8-470 R : sin »2m 53° 29 46 : ; 2i8-470 :… … ^^ The angle D C K, fig. 1, or G E H is the angle of intrado, and G E Ithe angle of extrado, and the difference of these, or H E I, is the twistwrought on the beds of the arch-stones; a sectional view through thecrown of the arch to show the radiation of the courses would exhibitthe checks on the…
Architecture · Civil engineering · Science
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