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A proposed revision to ASTM International standard ASTM D5456 , Specification for Evaluation of Structural Composite Lumber Products, would add bamboo as a fiber material that can be used in the manufacture of products covered in the standard. ASTM D5456 is under the jurisdiction of Subcommittee D07.02 on Lumber and Engineered Wood Products, part of ASTM International Committee D07 on Wood. ASTM…
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Air permits from regulatory agencies, such as the U.S. Environmental Protection Agency (USEPA), often require the measurement of a plume's opacity as the plume is emitted from a stationary point source (for example, smokestacks) in the outdoor ambient environment. While such opacity is often visually measured by human observers as “certified smoke readers,” an opacity measurement method using…
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The measurement of acid mist is becoming increasingly important due to recent actions taken by the U.S. Environmental Protection Agency on fine particles (2.5 micrometers in diameter and smaller) that are unhealthy to breathe. ASTM International Committee D22 on Air Quality is currently working on a proposed standard for measuring acid mists that come from combustion sources, WK22846 , Test…
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High-speed machine tool spindles and the high-pressure turbopumps that move liquid hydrogen in the space shuttle are just two examples of the uses for hybrid roller bearings. ASTM Subcommittee F34.01 on Rolling Element has now developed a standard for hybrid roller bearings, ASTM F2730/F2730M , Specification for Silicon Nitride Cylindrical Bearing Rollers. Subcommittee F34.01 is under the…
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A new ASTM International standard provides guidance for using data generated by ASTM standards in testing for asbestos in surface dust. ASTM D 7390 , Guide for Evaluating Asbestos in Dust on Surfaces by Comparison Between Two Environments, was approved by ASTM International Committee D22 on Air Quality, part of Subcommittee D22.07 on Sampling and Analysis of Asbestos. According to James Millette…
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A new ASTM International subcommittee, D07.08 on Forests, is now soliciting all interested stakeholders to assist in the development of a proposed new guide for forest management systems. The purpose of the subcommittee, under the jurisdiction of ASTM International Committee D07 on Wood, is to promote knowledge, stimulate research and develop standards pertaining specifically to forests. Industry…
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A new ASTM International standard that covers annular ball bearings intended primarily for use in instrument and precision rotating components has been developed as a conversion of a U.S. military standard, MIL-B-81793F, Annular Ball Bearings, for Instruments and Precision Rotating Components. The new standard, F 2332 , Specification for Annular Ball Bearings for Instruments and Precision…
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A new ASTM International standard will provide a method to consistently address indoor air quality complaints in residential buildings and to guide IAQ investigations in an efficient manner. The standard, D 7297 , Practice for Evaluating Residential Indoor Air Quality Concerns, is under the jurisdiction of Subcommittee D22.05 on Indoor Air, part of ASTM International Committee D22 on Air Quality…
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ASTM International Committee B08 on Metallic and Inorganic Coatings has recently approved a revision of one of its most important standards, B 633 , Specification for Electrodeposited Coatings of Zinc on Iron and Steel. B 633 is under the jurisdiction of Task Group B08.08.04 on Soft Metals, which is part of Subcommittee B08.08 on Metallic Coatings. Zinc coatings are used to provide a sacrificial…
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A recently approved ASTM International standard recognizes new state of the art technology for reinforcing glued laminated timber beams. The standard, D 7199 , Practice for Establishing Characteristic Values for Reinforced Glued Laminated Timber (Glulam) Beams Using Mechanics-Based Models, was developed by Subcommittee D07.02 on Lumber and Engineered Wood Products, under the jurisdiction of ASTM…