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ASTM International Committee E29 on Particle and Spray Characterization has recently approved an extensive revision of ASTM standard E11 , Specification for Wire Cloth and Sieves for Testing Purposes. The revision will lead to better control of the quality of sieve cloths and test sieves. ASTM E11 is under the jurisdiction of Subcommittee E29.01 on Sieves, Sieving Methods and Screening Media.…
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Being able to compile and interpret data on how traffic turns through an intersection could have an impact on future environmental and safety decisions regarding intersection geometry and traffic control. However, until recently no standard has existed to properly obtain and use this data. Now, ASTM International Committee E17 on Vehicle-Pavement Systems has approved E2667 , Practice for…
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Providing practical advice on the use of infrared thermometers is the purpose of a proposed new ASTM International standard. Infrared thermometry is used in a variety of measurement applications, including heating, ventilating and air conditioning, building inspection, industrial and manufacturing, automotive and food service equipment. The proposed new standard, ASTM WK21204 , Guide for the…
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Drawing on the best practices of the U.S. Federal Highway Administration and the states, ASTM International Committee E17 on Vehicle-Pavement Systems has developed a new standard, E 2561 , Practice for Installation of Inductive Loop Detectors. E 2561 is under the jurisdiction of Subcommittee E17.52 on Traffic Monitoring. Inductive loop detectors are installed in sawed slots in roadway pavement…
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Airport operators, military pavement maintenance personnel, transportation regulatory agencies and state highway departments will all benefit from the approval of a new ASTM standard for measuring skid resistance. The standard, E 2340 , Test Method for Measuring the Skid Resistance of Pavements and Other Trafficked Surfaces Using a Continuous Reading, Fixed-Slip Technique, was developed by…
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Two new standards developed by ASTM International Committee E17 on Vehicle Pavement Systems will provide uniform specification and test criteria for agencies and manufacturers that deal with traffic monitoring devices. The new standards, which are both under the jurisdiction of Subcommittee E17.52 on Traffic Monitoring, are E 2300 , Specification for Highway Traffic Monitoring Devices, and E 2532…
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A more efficient method to take asphalt pavement layer temperatures is the subject of a new standard developed by Subcommittee E17.41 on Pavement Management. The document, D 7228 , Test Method for Prediction of Asphalt-Bound Pavement Layer Temperatures, details surface temperature measurement and is based on temperature relationships in the Federal Highway Administration Long Term Pavement…
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Many state departments of transportation are collecting traffic data in real time and using it to manage traffic or provide travel information, as part of intelligent transportation systems. Some agencies save and archive this data after its initial real-time use and make it available to other data users, who often know little about how the data was collected or even what is contained in the data…
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Sieve manufacturers produce testing sieves using various sizes of wire cloth, per ASTM International standard E 11, Specification for Wire Cloth and Sieves for Testing Purposes. They also use ASTM standards E 161, Specification for Precision Electroformed Sieves, and E 323, Specification for Perforated-Plate Sieves for Testing Purposes when producing sieves from perforated plate. These…