London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 432
Min.. When the dimensions of the bases of these pillars supportingthe Gothic and Roman arches are increased to 4 in. by 4 in.,these arches will then balance at the height shown hyjigs. 151.and 152. 411 iti Arches^ PieiSf and Buttresses,The Gothic arch ^g. 151. balances on the pier a b, of 32 in.… … The Roman arch Jig, 152. balances on the pier a b, of23 in. in height. On increasing the dimensions of the piers of these two arches,by making their bases 6 in. by 6 in., and placing them upon thesame, the balancing heights were found to be, — E E 2 412 Principles of Construction For the Gothic…
Architecture
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