Improvements in the Construction of Dock Walls, Retaining Walls, Piers for Bridges, Buildings and the like.

摘要

23,739. Grassby, H. Oct. 25. Blocks; slabs.-Blocks and slabs for dock walls, retaining-walls, piers for bridges, buildings, &c. are notched or perforated, e.g. as shown in Figs. 4, 5, 6, and 7 to engage with metal piles A. The blocks adjacent to the horizontals D are provided with slots C', Fig. 5, to engage the flanges of the horizontals.