RE: Unfamiliar bar joists[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: RE: Unfamiliar bar joists
- From: "Effland, Greg" <geeffland(--nospam--at)butlermfg.com>
- Date: Fri, 29 Jun 2001 12:59:23 -0500
From: Brian K. Smith [mailto:smithegr(--nospam--at)bellsouth.net]
Sent: Friday, June 29, 2001 12:35 PM
Subject: RE: Unfamiliar bar joistsThe metal building industry ("pre-engineered") are using something very similar to these now. I know Butler has some. If the building is only a couple of years old, surely you can find the fabrictor and ask them some questions.Brian K. Smith, P.E.-----Original Message-----
From: Adair, Joel [mailto:JAdair(--nospam--at)Halff.com]
Sent: Friday, June 29, 2001 10:10 AM
Subject: RE: Unfamiliar bar joists
These joists are only a couple of years old.
The joist seats are made by adding an additional "sombrero" section, inverted.
From: Davis Parsons [mailto:dparsons(--nospam--at)msc-engineers.com]
Sent: Friday, June 29, 2001 9:51 AM
Subject: Re: Unfamiliar bar joists
"Adair, Joel" wrote:
> We have a project in Reynosa, Mexico that involves adding some framing to an
> existing building. The existing framing uses some joists that we are
> unfamiliar with, and we wanted to find out if someone might have an idea who
> the possible manufacturer might have been. The joists are designated "40
> JS" on the plans. The chord members (called "sombreros" on the plans) look
> like cold-formed light gauge sections with a configuration like this (pardon
> the ASCII art):
> |___/ \___|
> They are designated "cal. 14", which we understand is 14-gauge. They are
> 0.18 m (7 inches) wide and 0.03 m (1-3/16") deep.
> The web members are made of continuous bar stock bent into a normal joist
> web configuration, and welded to the chords at the bend.
> Anyone have any information on these joists? Who would be a possible
> supplier or manufacturer?
That type of chord section was used in joists made by Truscon, Bethlehem, and
Armco. None of the old catalogs that I have show a chord width at 7 inches.
What year range were these joists produced?
Are the joist seats made with just an inverted piece of chord material or do
they have a piece of flat plate attached?
Davis G. Parsons II, PE RA AEI
a practical structural engineer
in Fort Worth, Texas
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