London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 438
181818 If H Fig. 157. represents two Gothic arches, of 10 in. span, placedthe same as the preceding two Roman arches ; and the followingare the results of the experiments : — Number ofExperiment. Dimensions ofthe Pier. Height of thePier. The Weight on the Topof the Arch withwhich it balanced. No. 1… … The piers, for the first, fourth, and seventh experiments in thelast two diagrams, were made with solid pieces of board, 1 in. 157
Architecture
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