Need to calculate a header.
This is a header on 2nd floor opening on a load bearing wall. Under it, is 1st floor, and crawl space.
This load bearing wall is on top of a beam on 1st floor, with a loaded width of 15ft. There is already a header of 3"x5" under the floor joists of 3rd floor. Then there is the load bearing wall, with a top plate of 3"x3".
On top of this load bearing wall, is a 3rd floor load bearing wall, with a loaded width of 10ft. On top of this, is the 4th floor load bearing wall, with a loaded width of 8ft. On top of that, is the flat roof.
See the sketch attached.
I need to open up 5'4" in the wall on 2nd floor. I want to integrate the required header with the existing 3"x3" top plate and/or the 3"x5" beam on top of the top plate.
Ideally, I could make a flitch plate in place, using the 3"x3" and/or 3"5. The flitch plate can be made by 3 layers: 1/2"steel - 3"x3" top plate - 1/2" steel. If needed, the thickness of the steel can increas etc.
No need for any drawings. Just need the sizes of mateirials.
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Hello dear, I am a M.Sc. Structural engineer. I am expert in structural analysis and design. I can ﬁnish your task in the required time. Please contact me to discuss the details and start working.