Uniformity coefficient definition

Uniformity coefficient means a value which is the ratio of D60 to D10 where D60 is the soil diameter of which 60 percent of the soil weight is finer and D10 is the corresponding value at 10 percent finer. (A soil having a uniformity coefficient smaller than 4 would be considered "uniform" for purposes of this regulation.)
Sample 1Sample 2Sample 3
Uniformity coefficient means a number obtained by dividing that size of sand in millimeters of which 60% by weight is smaller, by that size of sand in millimeters of which 10% by weight is smaller.
Sample 1Sample 2Sample 3
Uniformity coefficient means a numeric quantity calculated by dividing the size of the sieve opening which will pass sixty percent of a sample by the size of the opening which will pass ten percent of the sample on a weight basis. Symbolically this is depicted as d60/d10 = Uc.
Sample 1Sample 2Sample 3

Examples of Uniformity coefficient in a sentence

  • Particle size distribution, mechanical sieve analysis as per IS code particle size distribution curve, effective diameter of soil, Uniformity coefficient and coefficient of curvature, well graded and uniformly graded soils.

  • The Particle size distribution curve, which is essential for determination of D10, Uniformity coefficient and Coefficient of curvature are not appended with the report.

  • Uniformity coefficient is approximately 74% which is less compared tosprinkler system.

  • Where Appendix 6/1 gives limits for other properties not listed in this Table such limits shall also apply.4. (05/04) Where BS 1377 : Part 2 is specified for mc, this shall mean BS 1377 : Part 2 or BS EN 1097-5 as appropriate.5. Uniformity coefficient is defined as the ratio of the particle diameters D60 to D10 on the particle-size distribution curve, where:D60 = particle diameter at which 60% of the soil by weight is finer D10 = particle diameter at which 10% of the soil by weight is finer6.

  • Uniformity coefficient: <1.6 Effective Size: 0.8-1.1 mm, Particle size > 8 mesh (2.36 mm) max.: 5 mass-% Particle size <30 mesh (0.60 mm) max.: 4 mass-%CTC adsorption min.:50% 2.

  • Uniformity coefficient of 2.36 and curvature coefficient of2.88 classifies the soil as poorly graded sand.

  • Uniformity coefficient: Ratio of the D60 size to D10 size of the material (low coefficient indicates uniform material).

  • The uniformity coefficient (Cu) percent was calculated using the Christiansen’s formula (1942);Where,Cu - Uniformity coefficient, per centm - Average value of all observations, mm n - Number of observationsx - Numerical deviation of individual observations from the average application rate.

  • Uniformity coefficient (UC ) as well as distribution uniformity ( DU ) as related to coefficient of variation ( CV ) affected when slope and inflow rate change and achieved acceptable value for all treatments.

  • Depth [m] Sediment type Percentage of fraction contribution [mm] U=d /d [–] CaCO [%] from to >0.2 1–2 0.5–1 0.25–0.5 0.15–0.25 0.05–0.15 <0.05 60 10 30.00.5U – Uniformity coefficient the diagrams, the boundary between the naturally loose and naturally compacted sediments is also in- dicated (marked by a solid line in Fig.


More Definitions of Uniformity coefficient

Uniformity coefficient means the ratio of the sieve size that will retain 40 percent of the aquifer materials to the effective size.
Sample 1Sample 2Sample 3
Uniformity coefficient means the number representing the degree of homogeneity in the distribution of particle sizes of filter sand or other granular material. The coefficient is calculated by determining the D60/D10 ratio where D10 and D60 refer to the particle diameter corresponding to the 10 and 60 percentile of the material which is finer by dry weight.
Sample 1Sample 2Sample 3
Uniformity coefficient means a ratio of the sieve-size opening that will pass sixty per cent of a representative sample of the filter material divided by the sieve-size opening that will pass ten per cent of the material.
Sample 1Sample 2Sample 3
Uniformity coefficient means a numeric quantity calcula- ted by dividing the size of the sieve opening which will pass sixty percent of a sample by the size of the opening which will pass ten
Sample 1Sample 2Sample 3
Uniformity coefficient means a value which is the ratio of D60 to D10 where D60 is the soil diameter of which 60 percent of the soil weight is finer and D10 is the corresponding
Sample 1
Uniformity coefficient means from a particle-size distribution curve it is, the ratio of the 60 percent grain size to the 10 percent grain size.
Sample 1

Related to Uniformity coefficient

  • Runoff coefficient means the fraction of total rainfall that will appear at the conveyance as runoff.

  • Energy Use Intensity (EUI means the kBTUs (1,000 British Thermal Units) used per square foot of gross floor area.

  • Pretreatment means the reduction of the amount of pollutants, the elimination of pollutants, or the alteration of the nature of pollutant properties in wastewater prior to or in lieu of discharging or otherwise introducing such pollutants into a POTW.

  • Stable in relation to land, means land form dimensions are or will be stable within tolerable limits now and in the foreseeable future. Stability includes consideration of geotechnical stability, settlement and consolidation allowances, bearing capacity (trafficability), erosion resistance and geochemical stability with respect to seepage, leachate and related contaminant generation.

  • Weather Normalized Site EUI means the amount of Energy that would have been used by a property under 30-year average temperatures, accounting for the difference between average temperatures and yearly fluctuations.

  • Thermal efficiency means the useful electric energy output of a

  • Working voltage means the highest value of an electrical circuit voltage root-mean-square (rms), specified by the manufacturer, which may occur between any conductive parts in open circuit conditions or under normal operating conditions. If the electrical circuit is divided by galvanic isolation, the working voltage is defined for each divided circuit, respectively.

  • Skilled Nursing Facility means an institution or part thereof that is licensed as a Skilled Nursing Facility by the State of Florida, and is accredited as a Skilled Nursing Facility by The Joint Commission or recognized as a Skilled Nursing Facility by the Secretary of Health and Human Services of the United States under Medicare.

  • Water treatment plant means that portion of the water supply system which in some way alters the physical, chemical, or bacteriological quality of the water.