Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 470
it intersects the first line (produced) ofthe trial equilibrium polygon, and drawing through it a vertical line,we have the line of action of the resultant (RJ of all the forces on thathalf of the arch. If we draw through a, the center of the keystone, ahorizontal line, its intersection with R^… … Fig. 223. Stresses in a 20-Foot Arch.Reproduced from an original drawn at scale of \ inch = 1 foot. polygon, intersects the horizontal line through the middle of the loadline at o/, which is the position of the true pole. Drawing the raysfrom the true pole to the load line, and drawing the segments…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
