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 343
Fig. 261. Howe Truss for Wooden Bridge. blocks (see Fig. 262), which are usually madeof cast iron, being hollow and about one-halfinch thick and strengthened by inner ribs.These blocks extend across the three or morechord pieces, having two or more hollow tubes … Angle Block
Architecture · Building
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
