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An innovative system that can be used to test and compare sediment control products has been approved as a new ASTM International standard by Committee D18 on Soil and Rock. The standard, D 7351 , Test Method for Determination of Sediment Retention Device Effectiveness in Sheet Flow Applications, is under the jurisdiction of Subcommittee D18.25 on Erosion and Sediment Control Technology. Even…
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A new ASTM standard, D 7401, Test Methods for Laboratory Determination of Rock Anchor Capacities by Pull and Drop Tests, is the result of requests to standardize a test to determine dynamic rock anchor capacity that is used internationally in the mining industry. The new test method was developed by Subcommittee D18.12 on Rock Mechanics, part of ASTM International Committee D18 on Soil and Rock.…
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A proposed new ASTM International standard will fill a need for a reliable method for measuring beryllium at various levels in soil samples that does not require the use of aggressive digestion methods involving strong acids. The proposed standard, WK17600 , Test Method for Determination of Beryllium in Soil, Rock, Sediment and Fly Ash Using Field-Based Extraction and Fluorescence Detection, is…
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A new standard recently approved by ASTM International Committee D18 on Soil and Rock is the result of requests from the Indiana Department of Transportation and the U.S. Bureau of Reclamation for an effective test method to cover the determination of the maximum dry unit weight and water content range for effective compaction of granular soils. D 7382 , Test Methods for Determination of Maximum…
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A new ASTM International standard, D 7367 , Test Method for Determining Water Holding Capacity of Fiber Mulches for Hydraulic Planting, will provide a means of evaluating water holding capacity in fiber mulches. The standard has been developed by Subcommittee D18.25 on Erosion and Sediment Control Technology, part of ASTM International Committee D18 on Soil and Rock. According to Becky Gauthier…
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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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A new ASTM International standard, D 7322 , Test Method for Determination of Rolled Erosion Control Product (RECP) Ability to Encourage Seed Germination and Plant Growth Under Bench-Scale Conditions, covers guidelines, requirements and procedures for evaluating the effect of RECPs on seed germination and vegetation enhancement. The standard was developed by Subcommittee D18.25 on Erosion and…
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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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An extensively revised standard and a proposed new standard are among the latest activities pursued by ASTM International Committee D18 on Soil and Rock. Subcommittee D18.11 on Deep Foundations has completed revisions to D 1143 , Test Method for Deep Foundations Under Static Axial Compressive Load, while Subcommittee D18.25 on Erosion and Sediment Control Technology is now working on proposed new…, ASTM D 1143, Test Method for Deep Foundations Under Static Axial Compressive Load, D 1143 covers procedures for testing vertical or inclined deep foundations individually or in groups to determine the axial deflection in response to a static axial compressive load. Subcommittee D18.11 has recently approved an extensive revision of D 1143 that reflects the latest technology used for these purposes. The following are the biggest changes to D 1143, according to Paul Bullock,…, WK13229, Test Method for Determination of Hydraulically Applied Fiber Matrix Performance in Protecting Hill Slopes from Rainfall-Induced Erosion, Subcommittee D18.25 is seeking participation in the ongoing development of WK13229 , particularly from testing laboratories and tackifier manufacturers/importers. WK13229 covers the guidelines, requirements and procedures for evaluating the ability of hydraulically applied fiber matrix to protect hill slopes from rainfall-induced erosion. For this protection to happen effectively, the fiber…
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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…