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RE: Bar Joists

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Per SJI Technical Digest No. 7, 50-Year Steel Joist Digest, the 1930
spec for a SJ102 states:

Depth = 10"

at L=14'-0" uniform load capacity = 214 plf

M capacity = 63,000 "#
Ma End Reaction = 1,900#

The above is the same for the 1949 revision of the specification.

Charles F. Espenlaub, III, P.E.
Martin-Espenlaub Engineering



-----Original Message-----
From: Michael Zaitz [mailto:mzaitz(--nospam--at)hgbd.com]
Sent: Thursday, January 11, 2001 10:10 AM
To: Structural Engineers Association
Subject: Bar Joists


Good Morning All

 I have a building built in 1936 concrete columns and beams supporting
bar joists with a 2 " concrete slab and flooring.  The existing plans
show S.J.. 102 at 23 1/2" o.c.  spanning 14'-0".  Can anyone give me any
information on these?  I have not gone to look at them but I plan too in
the near future.  Based on my experience with joists (fairly limited)
these are 10" deep joists and the 2 stands for the chord sizes (am I
correct in this)?

Thanks,

Mike