A
culvert is a device used to channel water.may be used to allow
waterwater to pass underneath a road; railway; or embankment. culverts
can be made of many different materials; steel; polyvinyl chloride (pvc)
and concrete are the most common. formerly; construction of stone.
Code
Detail of Culvert in Highwayhttp://www.mediafire.com/?bx5wisa4y1o6lwb