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
286
Working drawing
A drawing that gives all the information, details and dimensions, necessary for the complete construction or manufacture of the object represented......
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287
Assembly drawing
A drawing of the structure or machine put together, showing the relative positions of the different parts.
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288
Design drawing
The drawing layout whereon the scheming, planning and designing are accurately worked out, after the general ideas have been determined by freehand sketches and calculations......
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289
Outline assembly drawing
A drawing to give a general idea of a structure or machine and containing only the principal dimensions.
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290
Detail drawing, or Detailing
The drawing of a separate piece or component of a structure or machine, giving a complete and exact description of its form, dimensions and construction......
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291
Tabular drawing
The drawing, either assembly or detail, where the dimension lines are given reference letters and an accompanying table on the drawing lists the corresponding dimensions for a series of sizes of the structural parts or the machine parts, thus making one drawing serve the range covered......
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3369
Wire drawing
A phenomenon wherein an uncontrolled drop, weir, spillway, etc., the upstream water level suddenly falls down in convex parabolic curve as the water approaches the drop. This induces excessive velocity in the spilling water......
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3627
Working length, or Usable length
The length of the lock chamber from the centre of the downstream end of the cross wall to the beginning of the downstream gate chamber (illustrated)......
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3643
Working width of the lock, or Controlling width of the lock
The narrowest width of a lock at any point in its length.
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3694
Available working head
The minimum difference available between supply and delivery water levels or headwater and tailwater.
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4035
Rotation, Rotation System, or Rotational working
A method of managing an irrigation supply system such that an irrigator, or small group of irrigators, receive water delivery for a fixed period of time, after which the water is moved to the next turnout(s). Deliveries are  rotated at all irrigators so that the supply again becomes available before crop stresses can occur. The period of time requi.....
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4566
Pumping head, or Working head
The sum of the static head and lost head on a pump when discharging a given rate of flow.
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4852
Minimum working pressure of a filter
The lowest pressure at which the filter should function.
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4867
Maximum working pressure of a fertigation apparatus
The highest pressure at which the apparatus (injection pump or fertilizator) can function with full safety.
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5841
Working chamber
A chamber fitted with compressed air to prevent entry of water. Inside this chamber the excavation or construction work can be executed......
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6102
Working cycle
A complete set of operations. In an excavator, it usually includes loading, moving, dumping, and returning to the loading point......
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6162
Working dragline
An excavating machine having shoes to walk on and suitable for excavating large width canals. During excavation it sits on its base which has a diameter of about 9 m, and the shoes are arranged on both sides. To move, the walking shaft is rotated clockwise, thus turning the crank from its upright position and bringing the walking shoes in contact w.....
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6356
Working capital
The accumulation of net profits from year to year, carried over in the balance sheet, to provide against emergencies and to replace equipments as and when required......
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8936
Surveys for as-built record drawings
Surveys to collect the information of any changes, additions, or deletions to that shown on sanctioned drawings or contract drawings that were used for construction of the project or any of its features......
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9044
Contract drawings
Drawings listed in the specifications under the title `contract drawings` and include any future changes and revision of said drawings......
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