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A new ASTM International standard covers the principal dimensions and materials of closed chocks, used for mooring, for installation on ships. The new standard, ASTM F2935 , Specification for Chocks, Ship Mooring, Cast Steel, has been developed by Subcommittee F25.01 on Structures , part of ASTM International Committee F25 on Ships and Marine Technology . Chocks are mounted directly on the deck,…
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A new ASTM International practice provides a standard for preparing a mixture of cement paste that will simulate the shearing experienced by the cement paste in concrete. The new standard, ASTM C1738 , Practice for High-Shear Mixing of Hydraulic Cement Pastes, was developed by Subcommittee C01.22 on Workability , part of ASTM International Committee C01 on Cement . According to Chiara Ferraris,…
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Fiber reinforced plastic gratings are often used as walkways for a variety of marine vessels. A proposed new ASTM International standard will cover several aspects of fiber reinforced plastic gratings, including fire testing procedures, ultraviolet effects and moisture absorption. The proposed standard, ASTM WK31924 , Specification for Fiber Reinforced Plastic (FRP) Gratings Used in Marine…, ASTM Committee F25 Next Meeting:, May 17-19, 2011 May Committee Week, Anaheim, Calif., Technical Contact:, John H. Miller, U.S. Coast Guard, Washington, D.C., Phone: 201-372-1372; john.h.miller@uscg.mil, ASTM Staff Contact:, Robert Morgan, Phone: 610-832-9732; rmorgan@astm.org R elease #8816
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A new ASTM International standard will be used to prevent fire and explosions on the decks of tank vessels used to transport hazardous products. ASTM F2876 , Practice for Thermal Rating and Installation of Internal Combustion Engine Packages for Use in Hazardous Locations in Marine Applications, was developed by Subcommittee F25.07 on General Requirements, part of ASTM International Committee F25…, ASTM Committee F25 Next Meeting:, May 17-19, 2011, May Committee Week, Anaheim, Calif., Technical Contact:, James Lawrence, U.S. Coast Guard, Washington, D.C., Phone: 202-372-1382; james.d.lawrence@uscg.mil, ASTM Staff Contact:, Robert Morgan, Phone: 610-832-9732; rmorgan@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8787
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Many ship owners and operators repair ship structures with temporary steel patches known as doublers. The U.S. Coast Guard and Navy, as well as other maritime authorities, usually allow such patches until the ship’s next inspection period, which can be as long as three to five years from the date of repair. Despite this situation, there is not currently a standard for repairing steel hull ships…, ASTM Committee F25 Next Meeting:, May 17-19, 2011, May Committee Week, Anaheim, Calif., Technical Contact:, Chao H. Lin, Maritime Administration, U.S. Department of Transportation, Washington, D.C., Phone: 202-366-1847; chao.lin@dot.gov, ASTM Staff Contact:, Robert Morgan, Phone: 610-832-9732; rmorgan@astm.org, ASTM PR Contact:, Barbara Schindler, Phone: 610-832-9603; bschindl@astm.org Release #8750
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All interested parties are invited to participate in the development of a new standard, ASTM WK28289 , Guide for Design, Operation, Inspection and Maintenance of Oil Spill Response Vessels (OSRV). The proposed standard is being developed by Subcommittee F25.07 on General Requirements, part of ASTM International Committee F25 on Ships and Marine Technology. According to Thane Gilman, systems…
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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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A recently approved revision to ASTM International standard C 150 , Specification for Portland Cement, includes three significant technical changes to the document. The changes are part of a joint effort between ASTM and the American Association of State and Highway and Transportation Officials to harmonize C 150 with AASHTO’s standard, M 85, Specification for Portland Cement. C 150 is under the…
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ASTM International Committee F25 on Shipbuilding is supporting the 2006 Marine Environmental Engineering Technology Symposium, Common Issues, Common Solutions Government/Industry Partnership . Other sponsors of the event, which will occur Jan. 23-25, at the Crystal City Hotel in Arlington, Va., are the American Society of Naval Engineers, the Society of Naval Architects and Marine Engineers and…
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After a 35-year-absence, the natural cement industry is being revived and, along with it, a long-withdrawn ASTM International standard. Until it closed in 1970, the Century Cement Company in Rosendale, N.Y. was the last company to manufacture natural cement. Up to that point, Rosendale had been the center of the industry, the source of more than half of all natural cement produced in the U.S.…