De quoi est fait barrage
A structure that holds back water.
- Concrete dam wall — a pour partie. A mass of concrete that holds back the water by its weight.
- Dam spillway — a pour partie. It lets floodwater through.
- Dam gates — a pour partie. They regulate the release of water.
- Universal gravitation — utilise. Stability through its own weight.
- Roman concrete — est fait de. Ancient dams; modern ones are made of concrete.
- Reinforced concrete — est fait de. Concrete dams.
- Stone — est fait de. Sadd el-Kafara (~2700 BC) is an embankment of stone.
- Argile — est fait de. The core of the dam is clay and earth.