Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909)
Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 52
Fig. 30. Forms for Concrete Roof. of planks at the bottom, and be placed as far apart asmay be necessary. A pair of wedges under each postis necessary, and when released and the 2 by 2-inch … SHAFT HANGEK IXSEKT.
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.