Press Release Summary:
ASTM WK38192, Specification for Wet-Cast Precast Modular Block Retaining Wall Units, is being developed by Subcommittee C27.20. According to C27 member Clint Hines, "This standard will set requirements for dimensional tolerances of individual block units and lifting device requirements for improved safety in handling and installation." Hines also noted this standard will, among other things, eliminate use of reconstituted ready-mixed concrete in production of block units.
Original Press Release:
ASTM Precast Concrete Committee Developing Proposed Standard for Precast Concrete Retaining Wall Units
W. CONSHOHOCKEN, Pa.—While machine-placed wet-cast precast concrete retaining wall units have been commercially available since the late 1990s, there has not been an ASTM standard available to cover these products. Now, ASTM International Committee C27 on Precast Concrete Products is working on such a standard. ASTM WK38192, Specification for Wet-Cast Precast Modular Block Retaining Wall Units, is being developed by Subcommittee C27.20 on Architectural and Structural Products.
“Like any product standard, the purpose of ASTM WK38192 is to identify the physical properties of the products that are important for their intended use and to describe the proper means and methods of testing and measurement of those properties,” says Clint Hines, president, JC Hines and Associates LLC, and a C27 member. “This standard will set requirements for dimensional tolerances of individual block units and lifting device requirements for improved safety in handling and installation.”
In addition, Hines notes that ASTM WK38192, once it has been approved, will eliminate the use of reconstituted ready-mixed concrete in the production of block units, establish guidelines for freeze-thaw durability concerns and standardize minimum requirements for production quality assurance/quality control testing and reporting.
The units to be covered by ASTM WK38192 are used in the construction of gravity retaining wall and mechanically stabilized earth retaining wall applications. They can be used for a broad range of retaining wall applications from residential homes to large-scale commercial site development projects, as well as public agency transportation and waterways. The proposed standard will be used by manufacturers and distributors of the block units, testing laboratories, consulting firms, government agencies and commercial construction companies.
All interested parties are invited to join in the standards developing activities of Committee C27.
To purchase ASTM standards, visit www.astm.org and search by the standard designation, or contact ASTM Customer Relations (phone: 877-909-ASTM; email@example.com). ASTM International welcomes participation in the development of its standards. For more information on becoming an ASTM member, visit www.astm.org/JOIN.
ASTM International is one of the largest international standards development and delivery systems in the world. ASTM International meets the World Trade Organization (WTO) principles for the development of international standards: coherence, consensus, development dimension, effectiveness, impartiality, openness, relevance and transparency. ASTM standards are accepted and used in research and development, product testing, quality systems and commercial transactions.
For more news in this sector, visit www.astm.org/sn-construction or follow us on Twitter @ASTMBuildings.
ASTM Committee C27 Next Meeting: Dec. 10, 2013, December Committee Week, Jacksonville, Fla.
Technical Contact: Clint Hines, JC Hines and Associates LLC, Anderson, Ohio, Phone: 513-843-6570; firstname.lastname@example.org
ASTM Staff Contact: Joseph Hugo, Phone: 610-832-9740; email@example.com
ASTM PR Contact: Barbara Schindler, Phone: 610-832-9603; firstname.lastname@example.org