what are DRAINAGE CONTROL STRUCTUREs?
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A catch basin or concrete structure underground with a steel grate on top that is used for draining and transporting storm water
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They must have varying amounts of water.maybe according to how the pipes were posed and the size of the pipes and many other factors. You should have typed all the details to be able to give you the complete answer
194795
it keeps water away from the contact with the ground
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Among the possibilities, the foundation could be affected by compression from the damp and unyielding surrounding soil.  Extra drainage gravel around entire foundation may minimize foundation pressure fissures/cracking/collapse.\n\nHigh water table may require continuous or nearly continuous pumping to prevent flooding of basement or lowest level of structure.\n\nSlab construction, if possible, would eliminate below grade issues.
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irrigation channels???
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the barriers prevent constuction wastes from leaching into neighboring soils
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tell you what I know off the top of my head.\n\nA lined canal is just that - a ditch lined with something, usually either concrete or a film membrane, to conserve water by preventing it from seeping into the ground. This is especially important where the canal crosses a lot of sandy ground where water percolates easily into the substrate, and/or in areas where water is a very limited, valuable commodity, as it is in the Southwestern U.S. It's not terribly important, usually not cost effective - and maybe even completely unnecessary - in canals that flow over extremely dense, clay soils, or where there is plenty of it.\n\nLots of people oppose the lining of canals, however, because stopping the seepage dries up wetlands and trashes agriculture in areas that depend on the water that finds it's way into areas adjacent to the canals, either in the form of runoff or the recharging of local aquifers.
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A permanent irrigation conduit constructed to convey water from the source of supply to one or more farms.
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They restrict the width of where the water can go. The narrower the area, the faster the flow.
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Try Fisher Controls. You can find them with a web search.\n\nThey have been making all kinds of controls for refinery, petrochemical and oil field use for many years. I'm sure they service other industries also but this is where I know them from.
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I'm not exactly sure what you're asking from the way the question is phrased. The Missouri drainage laws can be found here: http://www.moga.state.mo.us/STATUTES/C244.HTM\n\nWhat you choose to do, depending on what you're draining, where, and how might also be affected by the federal Clean Water Act. (http://www.epa.gov/water/)
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To provide water to hillside communities, the distribution system has to be stratified into multiple zones with each zone serving a specific elevation area. This stratified design is known as a "cascade system."
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Jetties and sea walls cause sand and silt to be deposited on their down-current side.  Example: The long jetty near the airport.\n\nWetlands are drained for development thus removing the buffer that wetlands provide against storm surges and flooding.  Example: Burnt Bridge Creek area - Lacamas Creek Enterprises Inc. filled approximately 1.2 acres of wetlands
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The following are the types of irrigation that prevail in the whole world:\n1) Flood irrigation\n2) Overhead (sprinkler) irrigation\n3) Center pivot irrigation\n4) Lateral move (Side roll, Wheel line) irrigation\n5) Drip, or trickle irrigation\n6) Subirrigation
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It is like a cream separator, only stretched out along its axis.\n\nThe devices consists of a corkscrew-shaped flume.  A slurry of the material to be separated is flowed down the flume.  The greater momentum and proporitionally less hydrodynamic drag of larger and/or denser particles cause them to segregate along the outer margin of the flume.  One or more vanes at the bottom of the spiral separates the segregated slurry into two or more streams.
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I think that the drain is usually located at the lowest point of the footing to drain water, so it doesnt matter if the water seeps OUT when the pipe is not running full.\nAs long as water can run INTO the drain when the water level at the footing is raised, the drain performs as intended.\n\nsee site\nhttp://www.askthebuilder.com/B70_French_Drain_Design.shtml
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they are called junction boxes. they house all the telephone wiring for making connections. its like a service panel for the telephone workers. it can cover a 2 block radius at times. hope this helps.