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ASTM grain size is a property written into many specifications for metals, with finer grain sizes generally indicating better mechanical properties, such as formability. While measuring certain materials for such properties can be difficult, electron backscatter diffraction can provide precise determinations as well as give information on grain size distribution and statistics. A new ASTM…
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“Bumping” is a process that can allow virtually anyone to covertly operate a pin tumbler lock. A long-held locksmith secret, bumping has become more well known as videos describing the process of making and using a bump key have surfaced on the Internet. Potential intruders can use the bumping process to break into homes and other buildings while leaving the impression that something must have…
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A recent revision to ASTM International standard E384 , Test Method for Knoop and Vickers Hardness of Materials, expands the range of its coverage. The standard is under the jurisdiction of Subcommittee E04.05 on Microindentation Hardness Testing, part of ASTM International Committee E04 on Metallography. The revision incorporates ASTM E92 , Test Method for Vickers Hardness of Metallic Materials…
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Special considerations need to be made for flooring in multi-purpose rooms, particularly those in child care buildings, elementary schools and long-term care facilities. ASTM International Committee F06 on Resilient Floor Coverings is currently developing a proposed new standard for such flooring. WK24836 , Specification for Active Area, Multipurpose Flooring, is under the jurisdiction of…
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Responding to an increasing level of interest from engineers, regulators and communities, ASTM International Committee C27 on Precast Concrete Products has formed new Subcommittee C27.70 on Precast Concrete Products for Stormwater Management. “New environmental regulations, as well as vastly improved methods of meeting these, have created many new products and practices for stormwater management…
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ASTM International Committee F12 on Security Systems and Equipment has approved a new standard, F 2656 , Test Method for Vehicle Crash Testing of Perimeter Barriers. The new test method, developed by Subcommittee F12.10 on Systems, Products and Services, provides a range of vehicle impact conditions, designations and penetration performance levels for the testing of perimeter barriers that are…
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Although alkali resistant glass fibers have been commercially available for more than 30 years, there has not been an official standard that clearly defines what is required to make glass fibers resistant to alkali attack without the need for protective coatings. ASTM International Committee C27 on Precast Concrete Products has recently developed such a standard, C 1666/C 1666M , Specification…
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It has become a common scene: a driver in a parking lot suddenly loses control of a car, sending it into a storefront or other pedestrian area. In an effort to minimize the injury and damage caused by such crashes, ASTM International Committee F12 on Security Systems and Equipment is developing a proposed new standard, WK13074 , Test Method for Crash Testing of Low Speed Pedestrian Barriers. The…
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ASTM International Committee F12 on Security Systems and Equipment invites all interested users, specifiers and industry personnel to participate in the development of a proposed new standard, WK11191 , Test Method for Boat Barriers. WK11191 is under the jurisdiction of Subcommittee F12.10 on Systems, Products and Services. The purpose of the WK11191 is to create requirements for any land-based…
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Ineffective removal of grease from restaurants poses a variety of serious environmental problems. Large quantities of grease in public sanitary sewer systems can cause stoppages of piping networks and create costly and time-consuming problems at treatment plants. Sewer backups resulting from grease can also create health hazards when raw sewage backs up into homes or businesses. While grease…