Task Group 6.8 of the fib Commission 6 on Prefabrication recently published a State-of-the-art report about the treatment of imperfections in structural precast concrete (fib Bulletin No. 41). Since this is a very important topic for the precast industry, CPI will publish excerpts of this report in a series of 6 publications. In CPI issue 4-2008 the treatment of imperfections of hollow core slabs were already discussed, followed by issue 5-2008, reporting about the treatment of imperfections for precast beams. Issue 6-2008 was showing the treatment of imperfections of precast columns. Issue 1-2009 of CPI dealt with the treatment of imperfections of precast panels, and in this issue of CPI, the treatment of imperfections of precast double tee units will be discussed. The complete report, published in English, is available at the fib in Lausanne.
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fédération internationale du béton (fib) International federation for structural concrete Case Postale 88, 1015 Lausanne, Switzerland T +41 21 693 2747, F +41 21 693 6245 www.fib-international.org fib@epfl.ch