Illinois Society of Architects · Chicago · leaf 173
Pig-. 19. Fig*. 20. LEDGES—JOIST SUPPORTS.Secfion 507a, b, c. Pig1. 21. Fig. 19 (A) Corbelling to be not less than four courses of brick. (B) Upper course shall project four inches. (C) The joists shall be protected from top tobottom by brick. 507. Ledges—Joist Supports.) (a) Inbuildings two…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
