Non-ductile reinforced concrete buildings are among the most common structures in the United States. They are also among the most deadly. Structures built prior to the 1950s in California and prior to ...
25 years after the Loma Prieta earthquake in 1989, the Investigative Unit has discovered many columns still need to be retrofitted for safety. And some that have already been retrofitted need to be ...
At the end of last month’s column (Retrofit variable speed pump considerations, Part 1), I promised that we would venture into the world of sizing retrofit circulators for light commercial projects ...
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