Article listing for:
Irrigation, Drainage and Levelling
| A contour map or a topographical map is a map drawn that connects all areas of the same elevation above a datum by means of contour lines. It indicates the relative levels of all parts of an area of land by stating the height above the chosen datum. In general the datum used is sea level but on small land masses such as residential blocks an arbito... |
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| Factors to consider: Width and depth of trench, pipe size, grade of the trench, accessability.
NOTE: Trench depth will vary according to surface and slope of land and diameter of pipe.
Trenching Method: Decide where it is going to go, mark out lines for the centre of the trench, dig out one end (pot holes) to minimum depth (measuring), take staff... |
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| Why level? - water flow. - maintain correct level for building purposes. - ease and comfort of traffic flow.
Basic principle of levelling: - everything relates to a permanent reference point. - this reference point is called a Benchmark or Datum. Level tube: - surface of still liquid is level. - always seeks highest point.... |
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| Benefits of micro irrigation: Water pressure can be relatively low. Lower cost of parts and installation to more elaborate systems. Installation is quite easy and can be installed by DIY gardeners as well as professionals. Garden areas can watered separately to turf area. Systems can be designed and installed inside buildings for indoor plants. Mai... |
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| Trickle irrigation (Drip Irrigation) is an irrigation method which saves water and fertilizer by allowing water to drip slowly to the roots of plants, either onto the soil surface or directly onto the root zone, through a network of valves, pipes, tubing, and emitters.
Disadvantages: In sandy soil, water moves straight down (there is little horizo... |
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