OWSJ Identification and Information

[CruiserD]

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!

 

[BAretired]

I have an undated GWS metric catalog (4th edition, 1st printing) which lists an 800K joist with an actual depth of 822mm (32.36").

BA

 

[msquared48]

Mine is the "Imperial" version. It's better than your BA.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[BAretired]

Mike, the pages I attached earlier were from an Imperial catalog for the Western (W) 1973 series. The metric series was produced in Canada some time after 1973 but I do not know the exact date.

BA

 

[msquared48]

You might try contacting the ICBO at the following locations:

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

 

[CiVeDan]

Mike McCann, there are some Joists we are attempting to reference on site and we have managed to find the joist tags on some of the OWSJ's they are GWS 26" Deep and there are various spans. Is it at all possible for you to provide the joist catalouge to us in PDF form in its entirity? it would be greatly appreciated.

Thanks

Daniel Byrne, P.Eng.

 

[msquared48]

CiVeDan:

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

 

[CiVeDan]

I sent a request to management.

Can I post a temp FTP site for you to post to?

Thanks!

Daniel Byrne, P.Eng.

 

[msquared48]

No. They'll email me soon... Get it to you tomorrow.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[CiVeDan]

Ok, Great thanks!

 

[msquared48]

Dan: Should be in your in-box... Just sent it.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[CiVeDan]

Mike: I have not received an email I am assuming a bounce back has occured. I sent you an FTP site to upload to which has a 2GB limit. I trust this should be sufficient.

Thanks again, sorry this sort of became a run around

 

[Mixtli]

Hi BAretired,
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.

 

[BAretired]

Mixtli,

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

 

[Mixtli]

Hi BA, thanks for your response,
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!

 

[BAretired]

Mixtli,
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

 

[Mixtli]

Thanks BA,
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.

 

[BAretired]

Check the following thread in which I posted properties of the chord sections of Anthes joists:

thread507-285980

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

 

[Mixtli]

Thanks BA,
I will check on that thread
I appreciate it

 

[BAretired]

Mixtli,
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

 

[BAretired]

My scanner seems to be working again. See attached link:

BA