rolled-steel joist


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rolled-steel joist

n
(Building) a steel beam, esp one with a cross section in the form of a letter H or I. Abbreviation: RSJ
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014