International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Multilingual Technical Dictionary (MTD)

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Term No.Term Name/Term DescriptionAction
5869
Sand bank, Sand bank method
A covering of sand around and above structures built in the diversion channel to absorb most of the shock from the blast of the solid bulkheads and to prevent destructive cracking or displacement of the structure......
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5663
Sand blasting
A cleaning process by applying sand mixed with air under pressure through jet on to a concrete or other surface. Sometimes used to prepare on layer of concrete for pouring of a second layer......
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3203
Sand core
Sand-filled depth in a bank to inhibit animals from burrowing.
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6422
Sand dune
A sand wave of approximately triangular cross-section (in a vertical plane in the direction of flow), formed by moving wind or water, with gentle upstream slope and steep downstream slope, that travels downstream by the movement of sediment up the upstream slope and the deposition of it on the downstream slope......
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5871
Sand island method
A patented construction method used in streams for piers, etc., by forming a special island of sand in the stream to provide a stable footing through that a pier may be sunk to rock or other sound formation......
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4376
Sand pump, Shell pump, or Sludger
A long cylindrical tube fitted with a valve at the bottom and a plunger with a valve or valve-action leathers, and open at the top, used for raising up the mud which accumulates at the bottom of a boring during the sinking process......
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3495
Sand screens
In Egyptian terminology, silt devices built in the parent channel in front of intake regulators to deflect bottom sediment from entering the offtake channel......
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6035
Sand separation
The process of sorting aggregate particles by size.
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5150
Sand trap
Device, often a simple enlargement in a ditch, open channel, or pipe, for detaining sand and other heavy particles carried by water. May also include means for removing such material......
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3490
Sand trap, Sand and gravel trap
A device in a channel for arresting the sand, silt, etc., carried by the water, and generally including means of ejecting them from the system. When the sediment load includes gravel, it is called `sand and gravel trap`......
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5512
Sand-carrying capacity (lime mortar)
The characteristic, expressed by the number of parts of sand that may be added to the lime without rendering the mortar too stiff to work well under the trowel......
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8024
Sand-carrying wells, or Sand boils
A concentrated outflow of groundwater where the velocity of the groundwater flow is so high that soil particles are transported, even in the upward direction. This phenomenon can trigger a regressive process of internal erosion forming holes and cavities in the ground beneath the dike. The danger of sand-carrying wells is that sand is carried away .....
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8089
Sandbag
A bag filled with sand, silt or earth used for closing of breaches, or to form a temporary check dam. Sometimes filled with concrete and used for the same purpose as riprap......
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8090
Sandbag dike
Encircling a building, facility or settlement with sandbags.
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1370
Sanding
Accretion of sand.
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5475
Sandstones
1 - Rocks of sedimentary origin that have resulted from the consolidation of sand and gravel beds that either contained the cementing substance or were impregnated with it during the process of solidification; for the most part, these consist of quartz grains cemented together by silica, clay, iron oxide, or lime carbonate. 2 - Stone quarried from .....
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3251
Sandwich brick tile lining
Lining consisting of a layer of plaster on the subgrade and two layers of tiles with an impervious layer of cement mortar sandwiched in between......
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1579
Sandy river
River whose substratum consists of relatively smaller grains (with diameters less than 2mm) in a generally less wider granulometric study......
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7256
Sanitary landfill
Disposal of solid wastes by burial beneath a cover of soil or regolith.
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7259
Sanitary landfill liner
An impermeable barrier, manufactured, constructed or existing in a natural condition, that is utilized to collect or contain leachate......
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4097
Sanitary protection
The sum of those procedures, such as vaccination, food hygiene and stool sanitation of infected persons, and health inspection that protect inhabitants of projects from such water-related diseases as malaria, bilharzis and onchocercasis ......
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7339
Sanitary wastewater
The water supply of a community after it has been used and discharged into a sewer.
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7170
Sanitation
Control of the physical factors in the human environment that can harm development, health or survival. The formulation and application of measures designed to protect public health......
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1559
Sao
The name given to the whole work when the `peis` placed one above the other reach the required height (illustrated).
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6877
Saprobic
Associated with dead or decaying organic matter.
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