Culvert
A culvert is a structure that channels water past an obstacle or to a subterranean waterway. Typically embedded so as to be surrounded by soil, a culvert may be made from a pipe, reinforced concrete or other material. In the United Kingdom, the word can also be used for a longer artificially buried watercourse.
Culverts are commonly used both as cross-drains to relieve drainage of ditches at the roadside, and to pass water under a road at natural drainage and stream crossings. When they are found beneath roads, they are frequently empty. A culvert may also be a bridge-like structure designed to allow vehicle or pedestrian traffic to cross over the waterway while allowing adequate passage for the water. Dry culverts are used to channel a fire hose beneath a noise barrier for the ease of firefighting along a highway without the need or danger of placing hydrants along the roadway itself.
Culverts come in many sizes and shapes including round, elliptical, flat-bottomed, open-bottomed, pear-shaped, and box-like constructions. The culvert type and shape selection is based on a number of factors including requirements for hydraulic performance, limitations on upstream water surface elevation, and roadway embankment height.
The process of removing culverts to restore an open-air watercourse is known as daylighting. In the UK, the practice is also known as deculverting.
生日快乐
- 2023-04-24T00:00:00.000000Z
Warning Slowed
- 2023-03-18T00:00:00.000000Z
朝朝暮暮
- 2023-03-14T00:00:00.000000Z
浪漫初恋
- 2023-02-13T00:00:00.000000Z
漫步寒冬
- 2023-01-08T00:00:00.000000Z
Similar Artists