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Load and resistance factor design methodology developed by the American Association of State Highway and Transportation Officials plays a key role in a proposed ASTM standard on the design of culverts and storm drains. ASTM WK38166 , Specification for Manufacture of Precast Reinforced Concrete Three-Sided Structures for Culverts and Storm Drains Designed According to AASHTO LRFD, is being…, Technical Contact:, Balaram K. Singh, P.E., Michigan Department of Transportation, Lansing, Mich., Phone: 517-335-2174; singhb@michigan.gov, ASTM Staff Contact:, Diane Trinsey, Phone: 610-832-9661; dtrinsey@astm.org, ASTM PR Contact, : Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org R elease #9311
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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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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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A new standard approved by ASTM International Committee B07 on Light Metals and Alloys provides an outline for designers, casting purchasers, casting producers and technical societies on how to do business when purchasing squeeze, thixocast or rheocast parts. The new standard, B969 , Specification for Aluminum-Alloy Castings Produced by the Squeeze Casting, Thixocast and Rheocast Semi-Solid…
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ASTM International Committee C13 on Concrete Pipe has approved a new standard that covers flexible joints for concrete box sections using rubber gaskets for leak resistant joints. Subcommittee C13.08 on Joints for Precast Concrete Structures developed ASTM C1677 , Specification for Joints for Concrete Box, Using Rubber Gaskets. “This specification will provide a uniform minimum level of…
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A strong demand from the aerospace sector has made it challenging for industry to supply heat-treated plate for both aerospace and other applications. To increase heat-treated plate production capacity, ASTM International Committee B07 on Light Metals and Alloys has developed a new standard, B 947 , Practice for Hot Rolling Mill Solution Heat Treatment for Aluminum Alloy Plate. The new standard…