Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 261
of- Ed ■CoS .S3 ft- . O 00 ^ a « 3 H O <D «1 &S be O *^ >• ID M S o w .2 ROOF TRUSSES 1. Classes of Roof Trusses. Roof trusses may be divided intothree classes according to the shape of their upper chord. TheseIhree classes are: (1) Triangular roof trusses; (2) Crescent roof trusses; (3)…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The Mason Machine Works, Taunton, Massachusetts, U.S.A., inventors and builders of cotton machinery : Founded 1842 ; Incorporated 1873 ; [Catalogue] (1898)](https://img.insideoutlibrary.com/img/200/ia-masonmachinework00maso-177-57.webp)
