Does this help?

http://www.thesteelsupplyco.com/blog/bid/105048/Hi...

BA

Not really but thank you. So far I have been looking at the bending of the web which isn't giving me enough so I have added a stiffener just under the slotted hole in the web for the diagonal brace. This is such a "popular" type of connection that I am surprised that there isn't more info on an established design procedure for it.

Bending of the web could best be resolved using Yield Line Theory. If in doubt about its capacity, add a doubler plate.

BA

I bit the bullet and made a risa fem plate model. I did use the YLT to design the top of a concrete vault years ago and I recall being amazed at how simple and efficient the method is. It really felt like engineering magic. I'll have to check this model with it. Thanks BA. I wasn't able to load an image, but I was able to create a slotted hole, and yes it did need a doubler plate. I experimented with plates perpendicular to the web, but the doubler had the most effect in reducing the stress around the hole.
I'm still surprised there isn't a table with published values for this situation.

Vato:
Why don’t you ‘bit the bullet’ again, you already ‘made a risa fem plate model’ and build us all that ‘ table with published values for this situation.’ Everything in this world doesn’t come for nothing or a quick Google. Maybe a nomograph would be a better presentation for such a problem. Maybe some of the variables would be load and its angle, double pl. thickness vs. col. web thk., double pl. width to height a/b. You could also show some yield line solutions to the problem and how they compare with the FEA solutions. Then provide a welding design btwn. the column and the doubler pl.

Dhengr: Please Google 'anger management' before you post again.

We usually try to avoid connecting to the web and attach to a horizontal plate spanning between the flanges, any chance that would work?

Maybe the attached will provide some info that you can use.

• http://files.engineering.com/getfile.aspx?folder=bb25ee8a-5cc5-4405-9137-de

Thank you j19, that is IT! Thanks again.