OWSJ Identification and Information
OWSJ Identification and Information
(OP)
Hi,
I am trying to identify what I beleive is a GSW "L" OBSJ...see attached photos. I would also like to know if any span or capacity tables are available for this joist.
I saw the GSW joist referenced in a past post from May 17, but for some technical reason wasn't permitted to reply to the post.
Thanks!
I am trying to identify what I beleive is a GSW "L" OBSJ...see attached photos. I would also like to know if any span or capacity tables are available for this joist.
I saw the GSW joist referenced in a past post from May 17, but for some technical reason wasn't permitted to reply to the post.
Thanks!






RE: OWSJ Identification and Information
RE: OWSJ Identification and Information
But unless you can get a size (might be on a tag hanging from the joist, or painted on it, on the drawings, etc.), you're going to have to measure the joist and either figure out the properties or send them to the Steel Joist Institute (SJI).
RE: OWSJ Identification and Information
RE: OWSJ Identification and Information
RE: OWSJ Identification and Information
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
As for not being able to respond to the May 17 thread, the administrator may have closed the thread to further comments either due to its age or lack of activity. You can always ressurrect it (of sorts) by cutting and pasting the thread number to this thread as a reference should you so desire.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
I have two GWS catalogs: the Western (W) 1973 Series with Imperial dimensions listing allowable safe loads and the later but undated Metric catalog based on Limit States Design listing factored loads in kN/m.
What is your depth and span of joist? Do you want the Imperial or Metric span tables?
BA
RE: OWSJ Identification and Information
RE: OWSJ Identification and Information
RE: OWSJ Identification and Information
If it is a 32G spanning 60 feet, the allowable live load is 99 plf (L/360), antd total load 208 plf.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
I will have them look for a tag and or doublecheck the depth.
As of this point I would wager it is a 34L.
RE: OWSJ Identification and Information
GNW is now out of business, no longer making joists, but was purchased by Canron. Don't know the history beyond that.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
Anyone happen to have a span table covering this joist?!
Thanks
Darryl
RE: OWSJ Identification and Information
For a 32K spanning 60 feet, the total load is 337 plf and the L/360 live load capacity is 163 plf.
There is no rating for a 32K at 62 feet, they start at a 36G for 62 feet.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
BA
RE: OWSJ Identification and Information
BA
RE: OWSJ Identification and Information
Thanks again!
RE: OWSJ Identification and Information
FYI, a sticker on the bottom of page 1 gives an ICBO Approval Number of "PFC-4047". You might google that to see if you can get further information.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
BA
RE: OWSJ Identification and Information
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
BA
RE: OWSJ Identification and Information
How to reach us:
1-800-423-6587 or click on a name to send an e-mail message.
•Technical Application questions: Mike Temesvary, Director of Sales
•New Report Application questions: Terri Aguirre, Manager, Client Relations
•Billing questions: Sherell Jackson, Accounting Clerk
•Renewal Application questions: Juanita Molina, Administrative Coordinator III
•General questions: es@icc-es.org
The3y might have more information, but then again...
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
Thanks
Daniel Byrne, P.Eng.
RE: OWSJ Identification and Information
OK... See if this works. May not all be readable, but the best I can to.
...Looks like it's too big to upload here.
I have the catalog on my desktop, so if you can give the management here your email address and have them send it to me, then I can forward this to you. Please DO NOT post your email in this forum. No worries.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
Can I post a temp FTP site for you to post to?
Thanks!
Daniel Byrne, P.Eng.
RE: OWSJ Identification and Information
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
RE: OWSJ Identification and Information
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: OWSJ Identification and Information
Thanks again, sorry this sort of became a run around
RE: OWSJ Identification and Information
I am currently trying to assess a roof made of joists that may fall the description for GWS, I'm attaching a picture of it; didn't find any tags or markings, it seems the were recently painted.
I was wondering if you could help me identify it and if so help me out with the load table for it? de measured depth is 22"
Much appreciated
M.
RE: OWSJ Identification and Information
I don't believe that is a GWS joist, but it is hard to say from a side view. I provided the geometry of the chords of GWS joists in an earlier thread which I am repeating in the link below. Check the geometry of your chord and see whether or not it corresponds to the GWS geometry. So far as I know, GWS was the only fabricator in Canada to use a "hat" section as a chord, but other fabricators including MacComber and Anthes used a one-piece chord which might appear similar in side view.
BA
RE: OWSJ Identification and Information
The "hat" shape is quite different from what you sent, I am attaching more descriprive pictures and a hand sketch of the cross section.
Cheers!
RE: OWSJ Identification and Information
I think your joist is either a Macomber or an Anthes joist.
If it is Macomber, you will find some information on SlideRuleEra's archive (see link below). The top chord appears similar to your sketch but the bottom chord is different.
If it is Anthes, both top and bottom chords appear similar to your sketch. I don't know if you can find it on the internet, but I have an old catalog available. Anthes went out of business several years ago because joists on several projects collapsed under snow load, so you might want to be careful about using their span tables.
BA
RE: OWSJ Identification and Information
Both top and bottom chords are the same so it's definitely not a Macomber.
I think it may be an Anthes, what I am thinking on doing is calc the section properties, consider some conservative steel strength, say A-36 and do the calcs as if it was a truss, now does your catalog show the section properties for the 22" deep joist's chords and webs? I can obtain them from my pictures, but just to cross match them.
I am a bit worried about the reason the company closed, no wonder eh?, so I want to be conservative here. Do you know if the reported failures were due to the joist itself properties? or due to the steel it was made of?
Thanks a lot
M.
RE: OWSJ Identification and Information
thread507-285980: help identifying an irregular OWSJ chord
They made several 22" deep joists by using different chord members top and bottom as well as different web members. You will have to find the chord section actually used and compare it to my earlier post.
According to their brochure, the Anthes "V" Sections and open seam tubes conform to the following:
Tensile Strength: 67,000 psi minimum
Yield Strength: 55,000 psi minimum
So far as I am aware, the fault was not with the material. It was the fact that end diagonals were cut to the same length even when the width of the top flange of the supporting beam varied by several inches. This meant that, in some cases there were large eccentricities where the end diagonal met the top chord at the support.
I will peruse the brochure some more and post anything useful if I find it.
BA
RE: OWSJ Identification and Information
I will check on that thread
I appreciate it
RE: OWSJ Identification and Information
I was going to send you some more info on the Anthes joist, but my scanner has given up the ghost.
For Designation B224 through B228, the top chord is 4 through 8, the bottom chord is 3 through 7, the Resisting Moment in inch-kips is 421, 490, 598, 717 and 871. The maximum End Reaction in lb. is 6200, 7600, 8500, 11000 and 13000.
If the above are out of range, Anthes issued a supplement with three more sizes, namely B222, 223 and 229 which I will send if you need them.
BA
RE: OWSJ Identification and Information
BA
RE: OWSJ Identification and Information
I don't know what the designations mean, or have you sent that sheet already early in the thread? Let me check.
Cheers!
RE: OWSJ Identification and Information
BA