Differences between revisions 1 and 2
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
On an arch bridge, the '''''topping stone''''' is a horizontal layer of stone or concrete supported by the arch and in turn supporting the road or rail bed of the bridge. On an arch bridge, the '''''capstone''''' or '''''topping stone''''' is a horizontal layer of stone or concrete supported by the arch and in turn supporting the road or rail bed of the bridge, or acting as a protective layer at the top of the headwall.

On an arch bridge, the capstone or topping stone is a horizontal layer of stone or concrete supported by the arch and in turn supporting the road or rail bed of the bridge, or acting as a protective layer at the top of the headwall.

topping stone (last edited 2009-03-22 11:16:46 by JimIrwin)