On June 11, The Plastics Pipe Institute (PPI) issued what it called a "cautionary advisory" (read a copy here) regarding the integrity of fusible polyvinyl chloride (PVC) pipe. PPI said that fusible PVC pipe is susceptible to rapid crack propagation (RCP) and that this characteristic has led to a number of recent water pipeline failures. In particular, the group cited a failure in Naples, Fla., in May 2008, in which a newly installed 36-inch fused PVC water main cracked, causing significant damage and requiring costly repairs.
Underground Solutions, Inc. (UGSI), supplier of the fusible PVC pipe used in Naples, immediately responded with a letter to customers (click here to read) defending fusible PVC pipe performance and detailing what it called "misleading claims" and "inaccuracies" in PPI’s press release.
The Construction Outlook, a quarterly construction market forecast developed by FMI’s Research Services Group, indicates construction for 2008 remains much the same, but the outlook for 2009 has been revised down slightly because a downturn in nonresidential construction usually lags a slow down in the general economy. Nevertheless, water supply and sewage and waste disposal construction are expected to increase.
Thornton Tomasetti, Inc., the international building engineering and technology firm, has been contracted to provide structural design services for the new Transbay Transit Center in San Francisco. In September 2007, Pelli Clarke Pelli Architects was selected for the design and development of the Transbay Transit Center at First and Mission streets. The Los Angeles and New York offices of Thornton Tomasetti will join the architect’s team on this project that will consist of a new transit terminal topped by a public park.
The third edition of Technical Digest No. 9 contains a thorough coverage of the proper handling and erection procedures to be used in the field to ensure Steel Joist Institute joist products are not damaged, that they perform as specified, and to assist in the safety of the erectors.