Dams, canals and barrages
What it is
Structures that store, raise or carry water for irrigation, supply, power and flood control.
How it works
A dam resists water pressure by weight, arch action or a sealed embankment; barrages raise river level with gates; canals carry water on a gentle slope.
Diagram: Indiacon original, not to scale.
Main components
Dam body, foundation grouting, spillway, gates, energy dissipator, intake, canal lining, falls, regulators, cross-drainage works.
Key codes
IS 6512, IS 8826, IS 10430, IS 7784. Cited by number only; get the text from BIS or the issuing body.
Notable projects
Banasura Sagar dam, Hoover Dam (USA).