The theory and practice of modern framed structures : designed for the use of schools, and for engineers in professional practice (1897)
Johnson, J. B. (John Butler), 1850-1902, Bryan, C. W. (Charles Walter), 1863-1927, Turneaure, Frederick Eugene, 1886- · New York : J. Wiley & Sons · leaf 401
iroOQOOO O OQOOOOOOOIII, … Fig. 390. Fig. 391. outline, in plan and elevation, of a rim-bearing turntable loaded at four points marked P.This form of loading on a turntable is now avoided excepting perhaps for highway bridges The objections to loading a bearing rim at four points only is that it is impossible to get3 uniform…
