Filter sand definition

Filter sand means a specially graded type of permanent filter media.
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Filter sand means a type of filter media.
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Filter sand means clean, washed, screened or natural sand having less than 10% by weight retained on a 10 mm (3/8 in) sieve and less than 2% by weight passing a 0.075 mm (#200 US std.) sieve and the permeability of the sand must be not less than 0.0004 m/s (0.0013 ft/s);
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Examples of Filter sand in a sentence

  • Filter sand was placed in the annular space at the sampling depth, and bentonite was utilized to seal the annular space between sampling depths.

  • Filter sand shall be hard filter silicon material free of carbonates or other foreign material, with an effective particle size of between 0.4 and .55 mm and a uniformity coefficient not exceeding 1.75.

  • Filter sand used in wastewater disposal fields shall meet the gradation requirements in Table 3.

  • Filter sand was placed a few inches above the sampling implant, and bentonite/grout slurry was used to seal the annular space to the ground surface.

  • Filter sand is poured and tamped until tip is covered by at least 150mm.

  • Sediments from an unstabilized site affect the design flow rates of the measure and require cleaning prior to system use. Compaction of Soil Filter: Filter sand media and underdrain bedding material should be compacted to between 90 and 92% standard proctor.

  • The (e) Filter sand shall be placed on graded gravel layers for an following shall be considered, among other factors, in determining initial filter sand depth of 30 inches.

  • Filter sand is typically used from the bottom of the borehole up to one foot over the slotted sections of the well (which has a watertight end cap).Boreholes will have separate IDs and locations will be recorded using a GPS instrument.

  • Filter sand was installed in the annular space to the top of the screen and bentonite seal material installed above the filter sand.

  • Employing the same processes used in the assemblage of the HSSF Filter, sand is sifted with a 1mm mesh sieve for grain uniformity and then arranged to a specific depth inside the container to cover the candles.


More Definitions of Filter sand

Filter sand means the fine fraction of plant aggregate. It is a ground and washed sand (typical size minus-10 mesh) that has been cycloned, hydroseparated and then filtered at the extractor belt filters. It is transported by conveyor belt, rail or other wheeled conveyance. It is generally mixed with dry cobb aggregate but may be transported and used separately depending on construction needs. This term replaces the former terms 'coarse tailings', 'filter tailings', or 'belt filter tailings' in order to clarify the purpose and origin of the construction material to which it refers.
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