Differences between revisions 2 and 3
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
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"].

[http://www.holoscenes.com/images/bmwiki/bridge2.png]

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"].

[http://www.holoscenes.com/images/bmwiki/bridge2.png]

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