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  2. Flood control channel - Wikipedia

    en.wikipedia.org/wiki/Flood_control_channel

    Straight, clear, smooth concrete-walled channels speed up flow, and are therefore likely to make flooding downstream worse. Modern flood control seeks to "slow the flow", and deliberately flood some low-lying areas, ideally vegetated, to act as sponges, letting them drain again as the floodwaters go down. [4] [5] [6] [better source needed]

  3. Trench drain - Wikipedia

    en.wikipedia.org/wiki/Trench_drain

    A channel drain in a Vancouver condo. The popular trend in trench drains are linear systems. Linear as in line drain. Made from materials such as polymer concrete, fiberglass, structural plastic and steel, liner systems are the channel and grate components that are assembled in the trench and around which concrete is poured to form a drain ...

  4. Canal lining - Wikipedia

    en.wikipedia.org/wiki/Canal_lining

    Concrete used for canal lining is typically non-reinforced, as a way to reduce cost. A common method for constructing concrete lining is the use of slip forms, which are drawn down the length of the canal as the concrete is poured. [3] Hand laying of concrete or prefabricated sections are also used when only a short distance needs to be covered ...

  5. Sydenham Pit and Drainage Pumping Station 1 - Wikipedia

    en.wikipedia.org/wiki/Sydenham_Pit_and_Drainage...

    The batters are faced with sandstone blocks laid horizontally in courses of about 300mm. The width of the blocks range from square to over one metre in length. The blocks are dressed on four sides with the face sparrow picked. Along the top of the stone facing wall, earth batters and an open concrete drain were formed.

  6. Drainage - Wikipedia

    en.wikipedia.org/wiki/Drainage

    Channel drainage, which intercepts water along the entire run of the channel. Channel drainage is typically manufactured from concrete, steel, polymer or composites. The interception rate of channel drainage is greater than point drainage and the excavation required is usually much less deep.

  7. Drop structure - Wikipedia

    en.wikipedia.org/wiki/Drop_structure

    Able to accommodate both broad floodplains and narrow channels, they can also handle many different drop heights. Heights of these structures usually range from 1 foot (0.30 m) to 10 feet (3.0 m). These structures are built by creating a slope of riprap, which consists of large boulders or less commonly, blocks of concrete. These are then ...

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