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That's your call, the plans call for it, the inspector passed the current design with the wooden posts. Maybe ask the builder if he would do it for your piece of mind. If he argues the structure passed, cut a deal, ask if he would install if you provided the posts...:)
 

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Should we have the steel columns actually replace the 2x4's or have the steel columns put right next to the 2x4's as reinforcement? The footings are 36"x36"x12". The city inspector said he is done with the approval, and any changes done by us or the builder at this point would be up to us to deal with.
 

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Should we have the steel columns actually replace the 2x4's or have the steel columns put right next to the 2x4's as reinforcement? The footings are 36"x36"x12". The city inspector said he is done with the approval, and any changes done by us or the builder at this point would be up to us to deal with.
It's a pity the builder used the 2 x 4's instead of the posts, those would have given you peace of mind. Adding them to what you already have is "overkill". The structure has passed, the builder did no wrong other than NOT to place steel posts in the right place. He'd need to "block" beside the existing, lift slightly, pull the timber out and fit the post. It's not a five minute operation. Again, I would have a very friendly chat to the builder and make a very friendly request. Offer to buy the posts if he's prepared to supply the labor, that may be the only way to resolve this.
I, as a contractor, would have installed to plan, you do have the one saving argument there. Good luck.
 

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You can add the steel post yourself next to the 2x4 post. They are not that expensive and pretty easy to put in yourself. If you are going to have peace of mind with the steel posts in place then just do it yourself or see if the builder will place them next to the 2x4 posts. You don't need to remove the wood posts and replace with steel posts, putting the steel posts next to the wood ones will be fine.
 

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If the plans called for steel posts then the inspector should have failed the inspection. You should go back to the architect/structural engineer that speced that portion of the design, show them the pictures, & get their opinion.

Depending on the load conditions, the 2X4 supports may not be appropriate, especially the one where there are only 3-2X4s supporting 3 LVLs.

I would also check to see if bolts are required for connecting the 3 LVLs together and/or the jack studs supporting the LVLs.

If you are planning on finishing off that space then adding the steel posts will not allow flush walls.
 

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Should we have the steel columns actually replace the 2x4's or have the steel columns put right next to the 2x4's as reinforcement? The footings are 36"x36"x12". The city inspector said he is done with the approval, and any changes done by us or the builder at this point would be up to us to deal with.
I say, do not attempt to replace the 2X4's, just add the columns next to them. Make sure the 2X4's are nailed together properly. And the beams, as mentioned before, are not fastened correctly and this is required for span and deflection ratings for beams and girder trusses.
 

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These guys are right, I was wrong. I did replace two steel posts recently in a basement and worked fine for me and needed to do it because of the way the walls were to be structured, but it's a risk, what these folks are suggesting is no risk, the better way to go.
Merry Christmas folks...)
 

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It appears that the beams are sitting on Jack Studs, with a King Stud attached to the Top Plate. As long as everything is secure, in theory, the current setup should work. Now, depending on the load, and what the Structurial Engineer said, especially if not proper, the builder would have to fix.
 
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