Overhead anchor
The new Snake+ overhead anchor from Powers Fasteners, Inc., speeds installation of threaded rods—and is one of the industry’s first mechanical anchors to meet the new more stringent International Building Code for strength design (cracked concrete). The patented proprietary anchor eliminates the time consuming steps of banging in a drop-in and then using a special tool to set the expansion mechanism. It is simply set into a drilled hole and then tightened with a 1/2-inch impact wrench until flush with the ceiling and ready for the insertion of threaded rod. There is no need to swing a heavy hammer overhead while on a ladder or lift. The Snake+ also combines the aesthetics of an internally threaded body with the strong holding power of the popular Powers Wedge-Bolt anchor and its patented, deep-cutting thread design.
Powers Fasteners, Inc.
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Joist girder moment frames
Technical Digest No. 11, the latest in the Steel Joist Institute’s series of publications, illustrates procedures for the structural engineer to properly analyze, design, and specify open web steel joist and joist girder moment frames to resist wind and seismic lateral loads. The design methodology provided is limited to single-story structures subjected to wind and seismic loads; however, the design procedures are applicable to multi-story moment frames subjected to wind loads. This 120-page second edition—written by James M. Fisher, Ph.D., P.E.; Perry S. Green, Ph.D.; and Joseph J. Pote, P.E.—is an extensive update of the previously issued Technical Digest No. 11 on joist and Joist Girder moment frames. The digest covers the importance of the relationship between the specifying professional and the joist manufacturer, describes the analysis requirements for modeling the moment frame and provides design methodology for lateral wind loads and seismic loads. It also shows how to properly design and detail the connections and lateral bracing. There is an extensive discussion on the specification of loads and other design requirements that the specifying professional needs to provide to the joist manufacturer. Two detailed design examples are contained in the digest. To order a hardcopy, download an electronic copy or download an order form, visit www.steeljoist.org.
Steel Joist Institute
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Energy-conscious roof
Polyglass USA, a manufacturer of modified bitumen roofing products, now offers its Kool Roof Solutions Package, which includes its Polykool, Polybianko and Polyfresko self-adhesive roofing membranes. According to the company, these high-performance white membranes are designed to provide superior reflectivity and energy efficiency for low-slope roofing applications. Polykool, Polybianko and Polyfresko also incorporate a unique, high-performance fiberglass-reinforced polyester mat, manufactured with recycled content, which provides superior dimensional stability and enhanced puncture resistance. Polyglass’ Kool Roof Solutions not only provide enhanced performance and durability, they are also environmentally friendly, featuring highly reflective white surfaces that not only improve the aesthetic appearance of a building, but also reduce energy consumption, helping to minimize the heat island effect. Because of their enhanced energy efficiency, these membranes are ENERGY STAR-rated, CRRC-listed and California Title 24-compliant, and can significantly contribute toward LEED credit requirements.
Polyglass USA
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Concrete resource
The American Concrete Institute (ACI) released the 2008 edition of the Manual of Concrete Practice (MCP). Containing more than 190 documents, the MCP is the most comprehensive and largest single source of concrete practice information available in one set of books. The MCP is a must-have for concrete professionals in any facet of the industry and contains all of the ACI documents needed to answer any questions about code requirements, specifications, tolerances, concrete proportions, construction methods, evaluation of test results, and many more topics. The MCP also includes the 2008 version of ACI "318-08, Building Code Requirements for Structural Concrete and Commentary (ACI 318-08)." The MCP is available in a traditional hard copy version, which contains a set of six books and a separate index, an easy-to-use CD-ROM version, or an online version. To order, please call 248-848-3800 or visit www.concrete.org.
The American Concrete Institute
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