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Old 05-22-2014, 07:04 PM   #1
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Header On The Botton Of Wall?


Has anyone seen a header on the bottom of a wall?

This is my plan or the new framing going on my existing foundation.
At present, over all the windows, the existing floor joists (2x8's) are only nailed to the rim board (2x8), and sitting on and maybe nailed to the sill plate, (2x4). I also added joist hangers for the existing floor joists above the windows.

I'm planning on changing the window to an egress window but I want to keep the top up as high as it is presently.

Does the pic look like a good idea to spread the load out to the foundation rather than pushing down on the floor joists above the window?

Let's not do the engineer talk. I design first and ask questions later.
Besides, the company making the pre fab walls I will buy for this project will engineer the system they build and provide.

I'd just like to hear some opinions on where you see the load going and stuff.



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Old 05-22-2014, 07:28 PM   #2
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Header On The Botton Of Wall?


Years ago I was involved in a similar design, except we put the header on top the sill plate.
The joist were hung off the header. We had ample bearing on concrete wall too

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Old 05-22-2014, 07:40 PM   #3
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Header On The Botton Of Wall?


The header only supports the weight above it. The way you have it drawn that section of floor is only being supported by the single 2x plate above the window and is inadequate.

The floor joist hanging off the header as E mentioned would be the way to do it.
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Old 05-22-2014, 07:45 PM   #4
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Header On The Botton Of Wall?


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Years ago I was involved in a similar design, except we put the header on top the sill plate.
The joist were hung off the header. We had ample bearing on concrete wall too
But, this is an existing foundation and keeping the floor and existing floor joists.

The walls MUST be ordered prefab for a fast build up. A few days only to frame the whole house to dry in.
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Old 05-22-2014, 07:48 PM   #5
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Header On The Botton Of Wall?


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The header only supports the weight above it. The way you have it drawn that section of floor is only being supported by the single 2x plate above the window and is inadequate.

The floor joist hanging off the header as E mentioned would be the way to do it.
Interesting. The rim board is 2x8 spanning the window. That's what the hangers will be fastened to. Perhaps double the rim board over the window opening for double 2x8 since I will be cutting the floor joists back anyways to create a brick ledge.
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Old 05-22-2014, 08:06 PM   #6
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Header On The Botton Of Wall?


I have wide windows just below the rim joist--my architect designed doubled rim joists with a steel flitch plate sandwiched in between---

That would be over kill for a standard egress window.
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Old 05-22-2014, 08:07 PM   #7
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Interesting. The rim board is 2x8 spanning the window.
Yes I typed to fast but that doesn't mean it's adequate. Double up the rim and then then you have?
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Old 05-22-2014, 08:12 PM   #8
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Header On The Botton Of Wall?


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I have wide windows just below the rim joist--my architect designed doubled rim joists with a steel flitch plate sandwiched in between---

That would be over kill for a standard egress window.

Thanks. The window will be 48" wide.

I have 4 other windows 32" wide with the joists only nailed to the rim board and surprisingly they are not squishing down on the windows.

I plan on using hangers on those four small windows.

I just redrew the headers on the back wall where they were over the windows.



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Old 05-22-2014, 08:16 PM   #9
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Header On The Botton Of Wall?


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Yes I typed to fast but that doesn't mean it's adequate. Double up the rim and then then you have?
......then you (me) have to check the span tables. Basically, the rim should now be the same size as the header over a window opening of the same width. Is that where you're going with this?

Edit: then I wouldn't need the header in the bottom of the wall?

Last edited by 123pugsy; 05-22-2014 at 08:26 PM.
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Old 05-22-2014, 08:21 PM   #10
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Header On The Botton Of Wall?


The rim joist becomes a header--you can keep it the same width as the floor joists as long as it is strong enough---double or triple it or add steel---
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Old 05-22-2014, 10:19 PM   #11
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Header On The Botton Of Wall?


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The rim joist becomes a header--you can keep it the same width as the floor joists as long as it is strong enough---double or triple it or add steel---
You could even consider a micro-lam

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