Alexander A. “Sak” Sakhnovsky, a pioneer of test methods for curtain-wall stability, died of heart failure at age 84 on June 19 in Miami. SAKHNOVSKYWhile running a housing research laboratory at the University of Miami, Sakhnovsky was among the first to perform window testing, in 1954. A trained chemist, he was instrumental in developing, in the 1960s, the American Society for Testing Materials' static water- leakage test. It remains virtually unchanged today. Sakhnovsky bought the lab and launched Construction Research Laboratory Inc. (CRL), Medley, Fla., in 1968.CRL is considered the world's first and largest curtain-wall test facility, with 40 test
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