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  2. Floor drain - Wikipedia

    en.wikipedia.org/wiki/Floor_drain

    A floor drain is a plumbing fixture that is installed in the floor of a structure, mainly designed to remove any standing water near it. They are usually round, but can also be square or rectangular. They usually range from 2 to 12 inches (5.1 to 30.5 cm); most are 4 inches (10 cm) in diameter. They have gratings that are made of metal or plastic.

  3. Sewerage - Wikipedia

    en.wikipedia.org/wiki/Sewerage

    Sewerage. Sewerage (or sewage system) is the infrastructure that conveys sewage or surface runoff (stormwater, meltwater, rainwater) using sewers. It encompasses components such as receiving drains, manholes, pumping stations, storm overflows, and screening chambers of the combined sewer or sanitary sewer. Sewerage ends at the entry to a sewage ...

  4. Drainage - Wikipedia

    en.wikipedia.org/wiki/Drainage

    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 ...

  5. Sustainable drainage system - Wikipedia

    en.wikipedia.org/wiki/Sustainable_drainage_system

    Retention ponds such as this one in Dunfermline, Scotland, are considered components of a sustainable drainage system. Sustainable drainage systems (also known as SuDS, [1] SUDS, [2] [3] or sustainable urban drainage systems [4]) are a collection of water management practices that aim to align modern drainage systems with natural water processes and are part of a larger green infrastructure ...

  6. List of forms of government - Wikipedia

    en.wikipedia.org/wiki/List_of_forms_of_government

    Term Description Examples Autocracy: Autocracy is a system of government in which supreme power (social and political) is concentrated in the hands of one person or polity, whose decisions are subject to neither external legal restraints nor regularized mechanisms of popular control (except perhaps for the implicit threat of a coup d'état or mass insurrection).

  7. Drainage basin - Wikipedia

    en.wikipedia.org/wiki/Drainage_basin

    A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the drainage divide, [ 1 ] made up of a succession of elevated features, such as ridges and hills.

  8. C H E L S E A G R E E N P U B L I S H I N G W H I T E R I V E ...

    images.huffingtonpost.com/2007-09-10-EOA...

    and government—2001– I. Title. JC599.U5W63 2007 323.4'90973—dc22 2007024640 Chelsea Green Publishing Company Post Office Box 428 White River Junction, VT 05001 (802) 295-6300 www.chelseagreen.com EOA2 Final Pages 7/27/07 12:05 PM Page ii

  9. Trench drain - Wikipedia

    en.wikipedia.org/wiki/Trench_drain

    A trench drain (also channel drain, line drain, slot drain, linear drain, or strip drain) is a specific type of floor drain containing a dominant trough- or channel-shaped body. It is used for the rapid evacuation of surface water or for the containment of utility lines or chemical spills. Employing a solid cover or grating that is flush with ...