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cibula11 02-14-2007 05:02 PM

Beam project complete??
Well, the beam is up. I used 2 lvl's to span the 15 ft I needed. I've drywalled around it and it looks nice. Pictures soon! One end of the beam goes to the exterior wall, the other to the middle of the room. The end post (4x4 douglas fir) sits on a doubled sill plate. Under this is the basement. I looked in the basement and the post is sitting about 2-3 feet away from the main beam that supports the house. The post also falls on a floor joist. Should I give support to this area in the basement, or is the beam that is a couple feet away close enough to support the weight? There is a way I could simply add a little wall with 2x4 in the area to help frame out a rough in shower.

Also my house is old, and the floors are thick. Almost 6 inches, so its not like the end post is sitting on subfloor. Am I okay??

Square Eye 02-15-2007 12:42 AM

Add the support wall in the basement!!
Take advantage of ANY opportunity to support a beam, a post, a wall.. anything load bearing..

Did I mention YES!!! build the wall? :)

cibula11 02-15-2007 06:58 AM

Would a 2x4 wall be sufficient if it was not exactly under where the post would fall in the basement. It would be about a foot from the post upstairs and so the post would fall in the middle of the main support beam and the new wall in the basement? Or should it be directly underneath?

If a 2x4 wall is not enough, could I just use an adjustable post on top of treated I would probably not want to add a footing in the concrete for a supplemental post.

harleysilo 02-15-2007 06:59 AM

I would imagine over time the floor joist that is under the supporting beam COULD start to pull away from the main beam. I would make sure that joist is properly attached to the main beam. You could also sister that joist with another equal sized one. But if you are sure that end post sits dead on the joist, and that so happens to be exactly where you need a wall, I'd build a load bearing wall there as Not Round Eye suggests!

I have had a similar problem with a load bearing upstairs wall built less than 2 feet off the main beam in the basement, over the 20 years it was like this, those Floor joists all saged 3/4 inch. I had to jack them up and build another load bearing wall in basement to support them. The joists were not originally connect to the beam in the best manner.

harleysilo 02-15-2007 07:04 AM

Does this represent what you are describing?

cibula11 02-15-2007 07:17 AM

Yep it looks very similar. The only difference is that all the floor joists sit on top of the main beam. They are not hung into them. So most of the floor joists extends on top of the beam. There is no way that they could "pull" away .Sag, maybe. Also my proposed wall would not be that far away from where the post would fall. It is actually just about 1' away, and like I said earlier, about 2.5' away from the main beam. Does that make sense?

Another website forum told me to build a post directly under where the post is. The main problem with that is that it is close to a floor drain and the concrete begins to slope. That's why I was wondering if I could just add a wall a little off center from the supporting post.

cibula11 02-15-2007 07:17 AM

Also the wall would run perpendicular to the floor joists

harleysilo 02-15-2007 08:42 AM

I think I understand what you are describing now. So what is your new beam supporting?

Do you think you could build your own "mini-beam" and insert it next to the floor joist underneath the post, and run it over to the top of the new wall? So say your joists are 2x10's, you take 3 2' long 2x10's, nail and screw them together, place them on beam running over to top of new wall.....

Do you follow? Check your other thread about this for same response....

glennjanie 02-15-2007 09:57 AM

I vote with Square Eye; you must have direct support under the load. I have actual experience with this for evidence. When Janie and I moved into this house there was a 1-1/4" sag under the plumbing wall (which serves 2 baths) and the doors in that area were binding and dragging so bad they couldn't be closed. The house was 45 years old then and I don't know how long it had taken to get that much sag, but I know it was there. I raised it back up with 2 basement jacks and some 4 X 6s about 15 years ago and haven't had any problem since.

cibula11 02-15-2007 10:22 AM

Okay. My biggest problem...and sorry if I already mentioned this, but it is that the place that I need to support the floor joist is near a floor drain where the concrete slopes. I had thought that I could lay a pt 6x6 on the floor and put an adjustable post on top of the 6x6 and and attach to the floor joist. Is this an option?

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