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ASTM International Committee D35 on Geosynthetics invites all interested parties to participate in the development of a proposed new standard, WK15082 , Specification for Measuring the Asperity Height of Textured Geomembrane. The proposed standard is being developed by Subcommittee D35.10 on Geomembranes. Although asperity height is specified throughout the geosynthetic industry, a procedure to…
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Three subcommittees of ASTM International Committee D35 on Geosynthetics are currently developing several proposed new standards. The topics covered in the following proposed standards are geosynthetic clay liners, geomembranes, and the development of a mechanistic-empirical design guide for pavements. Committee D35 will meet Jan. 30-Feb. 1, 2008, at the January Committee Week in Tampa, Fla.…, Subcommittee D35.04 on Geosynthetic Clay Liners, Responding to shrinkage issues involving geosynthetic clay liners, Subcommittee D35.04 has launched work on a proposed new standard, WK12239 , Test Method for Linear Dimensional Changes of Restrained Geosynthetic Clay Liners Under Cyclic Temperature and Hydration Conditions. WK12239 is an index test that covers the measurement of changes in linear dimensions of a geosynthetic clay liner that…, Subcommittee D35.10 on Geomembranes, Subcommittee D35.10 is currently developing two proposed new standards, WK14305 , Specification for Non-Reinforced PVC (Polyvinyl Chloride) Geomembrane Seams, and WK14311 , Guide for the Installation of Non-Reinforced Polyvinyl Chloride (PVC) Geomembranes. According to Mark Wolschon, engineers, specification writers, users, suppliers, manufacturers, fabricators and installers of PVC…, Subcommittee D35.01 on Mechanical Properties, There is currently a national movement to develop a mechanistic-empirical design guide for pavements. This initiative requires that the fundamental material properties for all components of the design be quantified. Subcommittee D35.01 is working toward this goal with the development of two proposed new standards, WK14361 , Test Method for Determining Small-Strain Tensile Properties of Geogrids…
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Since 1998, when ASTM International Committee F05 on Business Imaging Products first approved standard F 1856 , Practice for Determining Toner Usage for Printer Cartridges, there has been a rapid increase in the use of color in office printing. In order to address this important change, Subcommittee F05.04 on Electrostatic Imaging Products has developed F 2632 , Practice for Determining the Toner…
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ASTM International Committee D35 on Geosynthetics is currently developing a proposed new standard that covers the test procedure for evaluating the effectiveness of prefabricated vertical drains to enhance the consolidation of soils under specified conditions. The proposed standard, WK13402 , Test Method for Large Scale Consolidation Test for Prefabricated Vertical Drains, is under the…
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The increased use of geomembranes as barrier materials to restrict liquid migration from one location to another created a need for a test method to evaluate the quality of geomembrane seams produced by tape methods. ASTM International Committee D35 on Geosynthetics has met this need with the approval of the new standard D 7272 , Test Method for Determining the Integrity of Seams Used in Joining…
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ASTM International Committee D35 on Geosynthetics has developed a new standard that is an important step toward the improvement of filtration design for non-woven geotextiles. The standard, D 7178 , Practice for Determining the Number of Constrictions “, m, ” of Non-Woven Geotextiles as a Complementary Filtration Property, will provide engineers and researchers a common basis for accurate determination of an important products property. Practice D 7178 is under the jurisdiction of Subcommittee D35.03 on Permeability and Filtration. Practice D 7178 describes the procedure used along with existing test methods to determine the number of…
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A new ASTM International standard, F 2490 , Guide for Aircraft Electrical Load and Power Source Capacity Analysis, has been accepted by the Federal Aviation Administration (FAA) as a means of compliance with 14 CFR 23.1351(a) (2), Electrical System Capacity for Part 23 (and Predecessor) Aircraft. Guide F 2490 was developed by Subcommittee F39.01 on Design, Alteration, and Certification, which is…
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The ability to determine the number of pages an ink jet printer cartridge will print in its lifetime is essential for anyone who manufactures or remanufactures them. A new ASTM International standard, F 2555 , Practice for Determining Page Yield of Ink Jet Printer Cartridges — Continuous Printing Method, has been developed to aid in this endeavor. Practice F 2555 is under the jurisdiction of…
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ASTM International Committee F05 on Business Imaging Products is currently seeking participation in the development of proposed new standards under the jurisdiction of Subcommittee F05.07 on Ink Jet Imaging Products. Users, original equipment manufacturers and ink producers are needed to assist in the following task groups: F05.07.01 This task group is working on developing a user-friendly…
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ASTM International Committee F39 on Normal and Utility Category Airplane Electrical Wiring Systems has approved its first standard, F 2490, Guide for Aircraft Electrical Load and Power Source Capacity Analysis. The new guide covers how to prepare an electrical load analysis to meet Federal Aviation Administration requirements. "This standard is a model for a consistent method of determining the…