London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 376
Span Weight ing Top of the pier. fl inensionsUie Iicr. of tlie of the of the of the Weight being half the Arch Pier. Pier. Arch, Arch. on the and the Weig ht W Arch. placed on it. 1 4> in . by 4 in. 18in.J4^1b. 10 in. 4^ lb. ilb. 2^ lb. 2 4 .. 4 15 U3 10 H f 2| 3 4< .. 4 12 3 10 H. 1* 3 4 4.… … / L \ \ 1 2 1 1 1 f 136 Fig. 138. is an experiment with a double voussoir arch,placed on a pier, the base of which measures 4 in. by 4 in., and * The result here was, that the arch carried my weight (a weight equalhng147 lb.), because a straight line could be drawn from the weight at a, throughthe…
Architecture
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