Coefficient of permeability definition

Coefficient of permeability and "Hydraulic Conductivity" shall mean the rate of laminar flow of water through a unit cross-sectional area of a porous medium under a unit hydraulic gradient at a standard temperature. The units of "Coefficient of Permeability" and "Hydraulic Conductivity" shall be expressed in centimeters per second.
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Examples of Coefficient of permeability in a sentence

  • Payments made by check will be refunded by check and may take up to 30 days to process.

  • The Mix Design shall be composed of a mixture of aggregate, cement, and water meeting the following requirements:Mix Design Requirements 7-day Compressive strength, psi (kPa) Between minimum 400 psi (2758 kPa) and maximum 800 psi (5516 kPa) ASTM C31 and ASTM C39 Cylinders in accordance with ASTM C31 and test per ASTM C39 Coefficient of permeability (ft/day) Between 500 to 1500 ft/day (150 to 450 m/day) AASHTO T215 Water-Cement Ratio Approx.

  • Coefficient of permeability recovery using a 7.5 % aqueous solution of calcium chloride was 93 %, as for concentration of CaCI2 of 10 % – coefficient was 96 %, as for 15 % CaCI2 – 91 %.

  • Coefficient of permeability values of 5 and 7 x 10-13 m/s were reported at ages of 28 and 7 days respectively for the mix with Penetron but no test was conducted on the control plain mix.

  • Define Coefficient of permeability, intrinsic permeability and transmissibility.

  • Where drainage drywells are proposed as stormwater infiltration infrastructure, the required drainage drywell wall surface areas shall be determined using Darcy's Empirical Law as follows: Where: Q = Design flow in m3/s; A = Cross-sectional area of soil through which flow takes place in m2; K = Coefficient of permeability of receiving soils in m/s; i = Hydraulic gradient within proximity to the drywell.

  • The following Geotechnical properties were investigated ; Shear strength, angle of internal friction and cohesion using unconsolidated undrained triaxial test (ASTM D 2850), Coefficient of permeability using constant head permeameter (ASTM D 2434), consolidation parameter (Cv, av, and S) using consolidometer (ASTM 2435), California bearing ratio CBR (ASTM 2434).

  • The Coefficient of permeability of a sample is given as: K = 2.3 aL/At log10 h1/h2 Where, k = Coefficient of Permeability a = Area of stand pipe A = Cross- sectional area of soil sample L = Length of sample t = Time interval h1 = Initial head h2 = Final headThe Coefficient of permeability of pond ash, soil and pond ash-lime mixture was found to be 7.00×10-6 m/s, 1.53×10-7 m/s and 3.27×10-6 m/s respectively.

  • The results show that CBR, and Coefficient of permeability (K) decreased from 12.6% and 3.28 × 10-4 cm/s at 0% contamination to 0.6% and 2.0 × 10-4 cm/s at 14% contamination, consolidation parameters Cv, av, and S increased from 6.46 × 10-7 KN/m2 , 1.1 × 10-2 Kn/m2 and 2.98mm at 0% to 9.65 × 10-7 KN/m2, 1.23 × 10-2 KN/m2 and 3.3mm at 14% contamination respectively.

  • Coefficient of permeability for a 6 inch diameter core sample of 5.98x101 inches/second.

Related to Coefficient of permeability

  • Turbidity means the cloudy condition of water due to the presence of extremely fine particulate materials in suspension that interfere with the passage of light.

  • Permeability of a space means the ratio of the volume within that space which is assumed to be occupied by water to the total volume of that space.

  • Irrigation efficiency (IE) means the measurement of the amount of water beneficially used divided by the amount of water applied. Irrigation efficiency is derived from measurements and estimates of irrigation system characteristics and management practices. The irrigation efficiency for purposes of this ordinance are 0.75 for overhead spray devices and 0.81 for drip systems.

  • Coefficient means a number that represents the quantified relationship of each variable to the assessed value of a property when derived through a mass appraisal process

  • Coefficient of variation or “C” means the ratio of the standard deviation to the mean value of a population of observations. It is estimated using the following equation:

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

  • Structural pest control means a use requiring a license under Chapter 14 (commencing with Section 8500), Division 3, of the Business and Professions Code.

  • Fertilization means the fusion of a human spermatozoon with a human ovum.

  • Aquatic invasive species means any invasive, prohibited,

  • SCADA means supervisory control and data acquisition.

  • Repeatability means the range of values within which the repeat results of cigarette test trials from a single laboratory will fall 95 percent of the time.

  • Material of Environmental Concern means and includes pollutants, --------------------------------- contaminants, hazardous wastes, and toxic, radioactive, caustic or otherwise hazardous substances, including petroleum, its derivatives, by-products and other hydrocarbons, or any substance having any constituent elements displaying any of the foregoing characteristics.

  • Invasive plant species means species of plants not historically found in California that spread outside cultivated areas and can damage environmental or economic resources. Invasive species may be regulated by county agricultural agencies as noxious species. Lists of invasive plants are maintained at the California Invasive Plant Inventory and USDA invasive and noxious weeds database.

  • Maintenance Manual shall have the meaning ascribed to it in Clause 10.7; “Maintenance Programme” shall have the meaning set forth in Clause 14.3; “Maintenance Period” shall have the meaning set forth in Clause 14.1; “Maintenance Requirements” shall have the meaning set forth in Clause14.2;

  • New Jersey Stormwater Best Management Practices (BMP) Manual or “BMP Manual” means the manual maintained by the Department providing, in part, design specifications, removal rates, calculation methods, and soil testing procedures approved by the Department as being capable of contributing to the achievement of the stormwater management standards specified in this chapter. The BMP Manual is periodically amended by the Department as necessary to provide design specifications on additional best management practices and new information on already included practices reflecting the best available current information regarding the particular practice and the Department’s determination as to the ability of that best management practice to contribute to compliance with the standards contained in this chapter. Alternative stormwater management measures, removal rates, or calculation methods may be utilized, subject to any limitations specified in this chapter, provided the design engineer demonstrates to the municipality, in accordance with Section IV.F. of this ordinance and N.J.A.C. 7:8-5.2(g), that the proposed measure and its design will contribute to achievement of the design and performance standards established by this chapter.

  • traceability means the ability to trace and follow a food, feed, food-producing animal or substance intended to be, or expected to be incorporated into a food or feed, through all stages of production, processing and distribution;

  • FOIPPA means the Freedom of Information and Protection of Privacy Act;

  • Stability (7) means the standard deviation (1 sigma) of the variation of a particular parameter from its calibrated value measured under stable temperature conditions. This can be expressed as a function of time.

  • Air pollution control equipment means a mechanism, device, or contrivance used to control or prevent air pollution, that is not, aside from air pollution control laws and administrative regulations, vital to production of the normal product of the source or to its normal operation.

  • health and safety specification means a site, activity or project specific document prepared by the client pertaining to all health and safety requirements related to construction work;

  • Processes with Significant Environmental Aspects means the Equipment which, during regular operation or if not properly operated or maintained, may cause or are likely to cause an adverse effect.

  • Safety Convention means the International Convention for the Safety of Life at Sea, 1974 (a copy of the English text of the articles of which, and of part of the annex to which, is set forth in Schedule 4), as affected by any amendment, other than an amendment objected to by Australia, made under Article VIII of that Convention and, after the date on which the Protocol of 1978 relating to the Safety Convention enters into force for Australia, as also affected by that Protocol;

  • Disinfection profile means a summary of daily Giardia lamblia inactivation through the treatment plant. The procedure for developing a disinfection profile is contained in s. NR 810.34.

  • Standard Methods for the Examination of Water and Wastewater means the most recent edition of Standard Methods for the Examination of Water and Wastewater published jointly by the American Public Health Association, the American Waterworks Association and the Water Environment Federation;

  • Accessibility means the ability for persons served to enter, approach, communicate with, or make use of the services of an agency, including but not limited to the need for bilingual staff, minority-specific programming, staffing patterns that reflect community demographics and adequacy of hours of operation.

  • Safety Management System means a systematic approach to managing safety, including the necessary organisational structures, accountabilities, policies and procedures;