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Building my first steel box beam to replace my load bearing wall using details from my structural engineer.

3.3K views 9 replies 5 participants last post by  skhunt42  
#1 ·
Hello, everyone! Long time lurker, first post..

So I've gotten myself into quite a dilemma, my structural engineer is on vacation for a few weeks. He drew out some plans to safely create a 8"x4" steel box beam that spans for 16 ft and attaches to a steel post. My friend who's a very experienced millwright is helping me assemble the beam but he mainly works industrial sites so he doesn't keep any finishing work in consideration. The plans had some minor changes, but the material got backordered for 2 months due to covid/shortages. The parts have arrived but my brain has departed because I completely forgot the changes he mentioned over the phone.

Anyways, the project is at a halt but I would love a second opinion and hear your experiences/advice with building a metal box beam. These are basically the questions I'm compiling for him and I'd like to pass on any concerns to him.

1. Can a Simpson LU26 mount from a wood ceiling joist to the steel beam? I believe my engineer said it was okay. I don't see why not, it's both galvanized.
2. When anchoring the steel post to the concrete footing he calls for a RCKW3S, did he mean RCKW3 with a RCKW3S?
3. If I use a RCKW3 to hold the post then I won't be able to drywall or put flooring over it due to the bolt sticking out of the ground. His plans called for option B or D in detail #16. What are other ways to anchor this column to the ground and still drywall it? Unfortunately, I have to assemble the post first then sandwich it between 2 partition walls so anchoring it is tricky.
4. In the detail #4, I need to put a 90 degree bracket on the top and bottom of the steel beam to tie it to the steel post. There's absolutely no clearance to run a bracket above the steel beam. Could I just use this connector instead of the (2) 90 degree brackets? SHH

Please keep it constructive, I'm aware I should wait for my engineer before making any decisions.

Also, If you're wondering why I didn't go with a LVL the beam is because it will hang low due to the tight roof clearance. My wife is a frontline covid nurse and she's been wanting the perfect open concept kitchen. She did not like the idea of any protrusions.

660906
 
#3 ·
I have no idea. Only thing is comparing to wood materials and beams must have enough load resting surface. Example, short beams may be ok with single jack stud (windows/doors) but anything bigger usually have double jack studs. I don't think you should be making layman's decisions on the hangers to use. The hanger manufacturer may have an engineer who can help you.
 
#5 ·
Theres something wrong here. Those details are professionally done, i can’t image a structural engineer would make verbal changes. If he went to the trouble and expense to draw that, you need to follow it exactly. And pose any questions or alternates to him in writing.

And what does it matter that your wife is a covid nurse? That’s nice and commendable, but completely irrelevant to the situation.

You sure this isn‘t a trick post?
 
#6 · (Edited)
Theres something wrong here. Those details are professionally done, i can’t image a structural engineer would make verbal changes. If he went to the trouble and expense to draw that, you need to follow it exactly. And pose any questions or alternates to him in writing.

And what does it matter that your wife is a covid nurse? That’s nice and commendable, but completely irrelevant to the situation.

You sure this isn‘t a trick post?
lol, whoa, someone must not have his coffee. Take it easy man, I was simply bringing it up before I hear people respond with “just have the beam stick down”, “who cares about a little dip”, “you won’t even notice it” and I mentioned her because I did not want to have to explain myself which I still ended up doing.

and the engineer made those verbal changes, I don’t know how else to satisfy you. He got on FaceTime we went over the process. You’re genuinely overthinking this entire post.

@Nealtw, thanks for the tip I think that would work great