Search results
Results from the WOW.Com Content Network
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 ...
In US usage in particular, it is a shallow channel with gently sloping sides. Such a swale may be either natural or human-made. Artificial swales are often infiltration basins , designed to manage water runoff , filter pollutants , and increase rainwater infiltration . [ 2 ]
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]
Typical shallow drainage trenches. Shallow drainage is facilitated through trenches. Traditional drainage trenches are cut in an unbroken length and filled with highly permeable, granular, draining material. Shallow drainage trenches equipped with geocomposites: typical scheme. Shallow drainage trenches may also be equipped with geocomposites.
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 artificial drainage to improve production or to manage water supplies.
"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 concrete sustains most of the weight and the slot opening is usually only 0.5 to 1.5 inches (1 to 4 cm). Capacity of evacuating water. It is a common misconception that flow rates are determined by open surface area alone. Other factors, such as drain material and surface material, play an important role, too. [citation needed]
The erosional processes that may lead to channel initiation are prevented. The increased soil strength also protects against surface runoff erosion, which hinders channel evolution once it has begun. [11] At the basin scale, there are fewer channels in the basin and the drainage density is lower than an unvegetated system.