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Traffic monitoring is a means of counting and classifying vehicles and measuring vehicle flow characteristics, such as vehicle speed, lane occupancy, turning movements and other items typically used to portray traffic movement. In order for traffic monitoring data to be assessed properly, information on how the data were collected, edited, summarized and reported must be provided. This obligation…
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Since the appearance of the first California-type models around 1940, the profilograph has been a popular device used for quality control in the construction of pavements. Both roadway and airfield landing agencies have adopted roughness indexes computed from profilograph-derived measurements as a level of construction quality. Emerging high-speed inertial profilers can now quickly collect…
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All interested parties are invited to participate in the standards developing work of Subcommittee F23.50 on Certification and PPE Interoperability, part of ASTM International Committee F23 on Personal Protective Clothing and Equipment. The subcommittee, which was formed in 2009, is currently working on a proposed new standard, WK27616 , Practice for a Product Certification Process. According to…
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A proposed new ASTM International standard for liquid threats on protective clothing will cover the specific needs of law enforcement officers. The new standard, ASTM WK25965 , Test Method for Liquid Threat Sprayed on a Mannequin, is being developed by Subcommittee F23.30 on Chemicals, part of ASTM International Committee F23 on Personal Protective Clothing and Equipment. Fire and hazardous…
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The ability to provide the correct amount of protection is one of the important elements in the development of protective clothing worn by individuals who apply pesticides as part of their jobs. While overprotection in hot climatic conditions can result in heat stress and low compliance, some of the existing design-based requirements can result in too little protection, as material performance…, CONTACT:, ASTM Committee F23 Next Meeting:, Jan. 26-28, 2010, January committee week, San Antonio, Texas, Technical Contact:, Anugrah Shaw, University of Maryland Eastern Shore, Princess Anne, Md., Phone: 410-651-6064; ashaw@umes.edu, ASTM Staff Contact:, Stephen Mawn, ASTM International, Phone: 610-832-9726; smawn@astm.org, ASTM PR Contact:, Barbara Schindler, ASTM International, Phone: 610-832-9603; bschindl@astm.org Release #84 54/Jan2010
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Workers in oil refineries, chemical plants, the natural gas industry and other industries that involve flammable or explosive materials need access to rain gear that is also flame resistant. A new ASTM International standard, ASTM F2733 , Specification for Flame Resistant Rainwear for Protection Against Flame Hazards, provides minimum requirements for flame resistant rainwear to be used by…
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A proposed new standard being developed by ASTM International Committee E17 on Vehicle-Pavement Systems will be the first to describe how truth-in-data should be applied to traffic monitoring data collection, summarization and reporting. WK25280 , Practice for Highway Traffic Monitoring Truth-in-Data, is under the jurisdiction of Subcommittee E17.52 on Traffic Monitoring. Current traffic…
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Rapid hardening hydraulic cements are used in a variety of applications in which reduced cementitious contents are desired or early service is needed. Included among these applications are paving, construction, stucco, mortar and block. A newly approved ASTM International standard covering these cements, ASTM C1600/C1600M , Specification for Rapid Hardening Hydraulic Cement, has been developed by…, Type URH, —ultra rapid hardening, for use where ultra high early strength is desired;, Type VRH, —very rapid hardening, for use where very high early strength is desired;, Type MRH, —medium rapid hardening, for use where mid-range rapid hardening, high early strength is desired; and, Type GRH, —general rapid hardening, for use when the higher strength properties of Type VRH or a Type MRH cement is not required. “ASTM C1600 lists minimum requirements for compressive strength, setting time, shrinkage and soundness (autoclave expansion),” says Hicks. “Optional specifications for sulfate expansion, alkali silicate reactions with aggregates, heat of hydration and expansion in water are also…
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In the field of personal protective clothing, a temperature rating indicates the lowest acceptable air temperature at which an average person would be comfortable when wearing a certain set of clothing. While manufacturers believe that providing temperature ratings is helpful to consumers when they are comparing garments, there have been different methods of testing for a temperature rating. The…
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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…