J-Series Joists
J-Series Joists
(OP)
I am trying to nail down a capacity for existing floor system that the architect wants to use for an alternate loading condition. I am looking for total and live load capacities for the following J series joists:
14J5's spanning a maximum of 20'-7"
14J4's spanning a maximum of 18'-2 1/2" + 1'-7" top chord extension.
I understand that these joists used A36 steel, and no design live load is listed on the 1963 drawings. I have a capacity estimate but I am looking for something more accurate.
Any help would be appreciated.
Thank you for your time and help.
14J5's spanning a maximum of 20'-7"
14J4's spanning a maximum of 18'-2 1/2" + 1'-7" top chord extension.
I understand that these joists used A36 steel, and no design live load is listed on the 1963 drawings. I have a capacity estimate but I am looking for something more accurate.
Any help would be appreciated.
Thank you for your time and help.






RE: J-Series Joists
14J4, 18' span: 311 plf total (no mention of tcx)
From the SJI 60-Year Manual, pg. 256.
RE: J-Series Joists
18J8's spanning 27'-2", and
16J6's spanning 20'
RE: J-Series Joists
RE: J-Series Joists