Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 403
f angles and add1 for each bend when the angle of bend is not more than about 30°; add 2for each bend when the angle is between 30° and 60°; over 60° ask for specialinstructions from the forge shop. (2) In the case of Figs. 7b and 7c. In the case of sharply curved endangles or when sharp bends are… … THE CHICAGO CITY HALL UNDER CONSTRUCTION Courtesy National Fireproofiny Co. STRUCTURAL DRAFTING 17 TABLE IIIAllowances for Pin Material No. Rule Pins up to and including 4 in diameter, add | to finished diameterfor turning Pins 4 to 6 in diameter, add j to finished diameter for turning Pins over 6…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
