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  2. ULMA Architectural Solutions - Wikipedia

    en.wikipedia.org/wiki/ULMA_Architectural_Solutions

    In 1990 ULMA Group decided to launch a new business called ULMA Polymer Concrete, dedicated to the manufacture of prefabricated polymer concrete drainage channels and window sills, as part of ULMA Construction. In 1991, the new business set up its premises and began to manufacture the first prefabricated pieces of polymer concrete, a material ...

  3. 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]

  4. Trench drain - Wikipedia

    en.wikipedia.org/wiki/Trench_drain

    A linear drain A Channel Drain. There are four common types of trench drains which are based on forming or installation method. These are cast-in-place, pre-cast concrete, liner systems and former systems. Newer stainless steel drains are available for residential and commercial shower installs and more commonly called "channel drains".

  5. Culvert - Wikipedia

    en.wikipedia.org/wiki/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. [1]

  6. 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 ...

  7. Precast concrete - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete

    A precast concrete walled house under construction An example of low-quality precast concrete with exposed dowels, connectors, indications of cracks, and malformations, even during its installation, Barangay Lantic, Carmona, Cavite, Philippines Interior view of the walls, supports, and roof of a precast commercial shop in Williston, North Dakota, US.

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  9. Advanced Drainage Systems - Wikipedia

    en.wikipedia.org/wiki/Advanced_Drainage_Systems

    Advanced Drainage Systems, Inc. (ADS) designs, manufactures and markets polypropylene and polyethylene pipes, plastic leach field chambers and systems, septic tanks and accessories, storm retention/detention and septic chambers, polyvinyl chloride drainage structures, fittings, and water filters and water separators. [1]

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