Papers read at the Royal Institute of British Architects (1853)
Royal Institute of British Architects · London, Royal Institute of British Architects · leaf 241
205 ON VAULTING. Let ab, axbxx, a2b , a3b3, be the joints of any arch, with a surcharge da di dr d. … for the joint a3 b3. If we take a sufficient number of joints in any arch, we thus get a series of points, the lines joining which will form part of a polygon of a great number of sides coinciding very nearly with a curve drawn through the points. This curve is the “ line of pressures" in the arch…
Architecture
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
