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CMU Spec

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Hello all:
I have plan check corrections for these items and I have found out no one in our company has updated their plan spec yet, so I am the fall guy.  I need to change our old specs for Concrete Block U.B.C. STD. 21-4  Grade N; for Brick U.B.C. STD. 21-4
and Welding of Rebar  U.B.C. STD. 19.1  low hydrogen.  What are the new designated spec for these ?
Thanks very much
Joe Venuti
Johnson & Nielsen Associates
Palm Springs, CA

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