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"Over a mile long reach [of the water channel] adds up to over 1.5 acre of land needed for the two stage drainage ditch design". This acreage of land may already be currently used for other purposes or contains infrastructure and subsurface gas or sewer lines. Thus, the larger the channel is, the more soil, and thus, increased funds required to ...
The drain is characterized by its long length and narrow width, the cross-section of the drain is a function of the maximum flow volume anticipated from the surrounding surface. Channels can range from 1 inch (2.5 cm) to 2 feet (61 cm) in width, while depths can reach up to 4 feet (120 cm).
These are used for garden walls and for sloping sills under windows, however these are not climate proof. [3] Rowlock arch has multiple concentric layers of voussoirs. [5] Soldier: Units are laid vertically on their shortest ends so that their narrowest edge faces the outside of the wall. [1] These are used for window lintels or tops of walls. [3]
A constructed swale or bioswale built in a residential area to manage stormwater runoff. A swale is a shady spot, or a sunken or marshy place. [1] In US usage in particular, it is a shallow channel with gently sloping sides.
The vertical hard basin drop structure, also called a dissipation wall, is the basic type of drop structure.The vertical hard basin drop consists of a vertical cutoff wall, usually built of concrete, that is usually laid perpendicular to the stream flow, and an impact basin, not unlike a stream pool, to catch the discharged water.
Carnot wall: a loopholed wall between the rampart and the inner edge of the ditch. Chemin de ronde: a pathway running along the berm, behind the faussebraye or Carnot wall. [2] Cunette: a narrow channel that runs along the floor of the ditch for drainage purposes. Bartardeau: a type of masonry dam across a ditch that is part wet and part dry. [3]
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Comparison of a ha-ha (top) and a regular wall (bottom). Both walls prevent access, but one does not block the view looking outward. A ha-ha (French: hâ-hâ [a a] ⓘ or saut de loup [so dÉ™ lu] ⓘ), also known as a sunk fence, blind fence, ditch and fence, deer wall, or foss, is a recessed landscape design element that creates a vertical barrier (particularly on one side) while preserving ...
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