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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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One of the goals of Subcommittee E54.05 on Building and Infrastructure Protection is to provide guidance for the design of doors, windows and other opening protectives that are part of the exterior security envelopes of buildings. As one path to achieve that goal, the subcommittee is currently developing a proposed new standard, WK14650 , Test Methods for Forced Entry and Ballistics Resistant (…
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An ASTM International task group is developing a proposed new standard, WK11343 , Test Method for Performance Verification of Blast Resistant Trash Receptacles (BRTR). Manufacturers of BRTR and related products, transit and other security organizations that may deploy them, organizations that could conduct testing and other interested parties are welcome to attend a task group meeting from 9:00…
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ASTM International Committee E54 on Homeland Security Applications invites all interested parties to participate in the development of a proposed new standard, WK8908 , Guide for School Preparedness and All-Hazard Response. WK8908 is under the jurisdiction of Subcommittee E54.02 on Emergency Preparedness, Training and Procedures. WK8908 will cover concepts, principles and best practices for all…
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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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A proposed new ASTM International standard will help emergency responders develop succinct, usable emergency response guidance in the event of a radiological event, which may include an intentional release or an attack involving a radiological dispersal device (also known as a “dirty bomb”). The proposed standard, WK7020 , Guide for the Development of a Radiological Emergency Response Playbook,…
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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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ASTM International, one of the largest voluntary standards development organizations in the world, announced the approval and availability of a new standard for collecting, packaging, and transporting visible powder samples suspected of being biological agents. ASTM E 2458 ,, Standard Practices for Bulk Sample Collection and Swab Sample Collection of Visible Powders Suspected of Being Biological Agents from Nonporous Surfaces, is the first standard to address the subject. E 2458 incorporates reference guidance to comply with appropriate federal regulations regarding biosafety and biosecurity. The standard is applicable to nonporous surfaces only., Cooperative Interagency and Stakeholder Effort, The development of a sample collection standard was initiated by the U.S. Department of Homeland Security (DHS) in order to address the problems associated with haphazard sample collection and screening. DHS assigned the National Institute of Standards and Technology (NIST) to coordinate and lead a task group whose charge was to develop a standard protocol for the collection of powders that are…, ASTM Committee E54 on Homeland Security, Currently there are over 500 stakeholders in Committee E 54 on Homeland Security, representing diverse groups including first responders, manufacturers, suppliers, trade and professional associations, and federal, state and local government. The committee was first organized in 2003. E 2458 is the third standard issued by Committee E54 on Homeland Security, and the first standard of Subcommittee…, Two-Step Procedure, E 2458 is a two-step procedure that is performed after an initial risk assessment is conducted and a visible powder is deemed a credible biological threat. The first step of the procedure, or Method A, covers the bulk collection and packaging of the suspicious visible powders from solid nonporous surfaces. Bulk samples are collected and transported in a manner that permits public health and…, Sample Collection Procedure Proven to Work, A study was conducted in March 2006 to validate the reliability of the sampling procedure at the U.S. Army Dugway Proving Ground. The study demonstrated that the sampling procedure can be used by trained Emergency Responders in simulated emergency conditions to consistently recover samples. The study also proved that sufficient number of Bacillus anthracis spores can be detected by Emergency…, after, all bulk samples have been collected. The evaluation study was designed to determine the recovery efficacy on seven environmental surface types that included stainless steel, food-grade painted wood, rubber, tile, concrete, finished wood, and plastic. The study involved six teams that included four National Guard Civil Support Teams (CST), the Navy’s Chemical Biological Incidence Response Force (…, Contacts, ASTM standards are available from Customer Service (610-832-9585); https://www.astm.org/contact/ ) or the ASTM web site store ( www.astm.org ). For further technical information, contact E54.01 Chairman Alim A. Fatah, Program Manager, Chemical Systems & Materials, Office of Law Enforcement Standards, NIST (phone: 301/975-2753; alim.fatah@nist.gov ). The next meeting of Committee E54 is Jan.…