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  2. Drainage density - Wikipedia

    en.wikipedia.org/wiki/Drainage_density

    According to the equations, a basin with high drainage density, the contribution of surface runoff to stream discharge will be high, while that from baseflow will be low. Conversely, a stream in a low drainage density system will have a larger contribution from baseflow and a smaller contribution from overland flow. [8] [9]

  3. Geonets - Wikipedia

    en.wikipedia.org/wiki/Geonets

    Building high-load platforms (such as warehouses, port buildings, airports, and container terminals) Drainage geocomposites are geonets that have been laminated with geotextiles on one or both surfaces. The construction business is being revolutionized by geosynthetic materials. The building sector uses a wide variety of geosynthetic materials. [2]

  4. HDPE pipe - Wikipedia

    en.wikipedia.org/wiki/HDPE_pipe

    HDPE pipe is a type of flexible plastic pipe used to transfer fluids and gases.It is often employed for replacing aging concrete or steel main pipelines.Constructed from the thermoplastic HDPE (high-density polyethylene), it has low permeability and robust molecular bonding, making it suitable for high-pressure pipelines.

  5. High-density polyethylene - Wikipedia

    en.wikipedia.org/wiki/High-density_polyethylene

    HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]

  6. Geocomposite - Wikipedia

    en.wikipedia.org/wiki/Geocomposite

    The third type within this area of drainage geocomposites is the category of prefabricated edge drains. These materials, typically 500 mm high by 20 to 30 mm wide are placed adjacent to a highway pavement, airfield pavement, or railroad right-of-way, for lateral drainage out of and away from the pavement section.

  7. Culvert - Wikipedia

    en.wikipedia.org/wiki/Culvert

    Culverts can be constructed of a variety of materials including cast-in-place or precast concrete (reinforced or non-reinforced), galvanized steel, aluminum, or plastic (typically high-density polyethylene). Two or more materials may be combined to form composite structures. For example, open-bottom corrugated steel structures are often built ...

  8. Cellular confinement - Wikipedia

    en.wikipedia.org/wiki/Cellular_confinement

    This cellular confinement system was made from high density polyethylene (HDPE), relatively strong, lightweight [8] and suitable for geosynthetic extruding manufacturing. The cellular confinement system was used for load support, slope erosion control and channel lining and earth retention applications in the United States and Canada in the ...

  9. Drainage - Wikipedia

    en.wikipedia.org/wiki/Drainage

    High-density polyethylene pipe installation in a storm drain project, Mexico. Drainage is the natural or artificial removal of a surface's water and sub-surface water from an area with excess water. The internal drainage of most agricultural soils can prevent severe waterlogging (anaerobic conditions that harm root growth), but many soils need ...

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