http://structuremag.org/Archives/2009-6/C-EngrNotebook-Antiquated9a-Stuart-June-09.pdf
If you find your joist described in the tables provided along with the article contact directly me because it is very likely that I have the load tables for the product which I obtained directly from SJI.
D. Matthew Stuart, P.E., S.E., F.ASCE, SECB
Senior Project Manager
Structural Department
Associate
Engineers and Consultants - CMX <https://mail.cmxengineering.com/exchweb/bin/redir.asp?URL=http://www.cmxengineering.com/index.htm>
200 Route 9
Manalapan, NJ 07726
732-577-9000 (Ext. 308)
908-309-8657 (Cell)
732-298-9441 (Fax)
mstuart@CMXEngineering.com