Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 396
eath in Fig. 98, it will be observedthat both are alike. In practical work the stair-builder is often called upon to dealwith cases in which the conditions of tangents differ from all theexamples thus far given. An instance of this sort is shown in Fig. 100,in which the angles between the tangents…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
