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RE: Concrete Joists

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That was my thought also (that they had loop ties into the slab).


Glad to hear it may be a product and not just some concrete cowboy “doin’ his own thang”.


Barry H. Welliver



From: David Fisher [mailto:dfisher(--nospam--at)]
Sent: Thursday, June 10, 2004 3:40 PM
To: seaint(--nospam--at)
Subject: RE: Concrete Joists


Sounds like a precast concrete I joist floor system with a topping slab.


I’ve seen this system in schools and churches…


The tops of the joists have “loops” that were used to set them and serve as shear connectors…





David L. Fisher SE PE

Fisher + partners

372 West Ontario

Chicago 60610



312.573.1726 fax


312.622.0409 mobile

From: Barry H. Welliver [mailto:barrywelliver2(--nospam--at)]
Sent: Thursday, June 10, 2004 4:21 PM
To: Seaint Listserv
Subject: Concrete Joists


I am doing a remodel to a 1930’3 concrete residence and came upon an unusual (to me) framing system.


The floor slab is concrete which is supported on joists which look like “fat” TJI’s at 16” on center. At first I thought I was looking at a fireproof spray on to a wood I joist, but they’re real concrete. It was not readily apparent whether the floor slab is monolithic with to floor slab but they do seem to have been poured with the concrete girders.


Any idea what this may be? The house is apparently the work of a local Salt Lake City “cement” man, but it’s got me stumped.


Barry H. Welliver