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Discussion Starter · #1 · (Edited)
Hi
So we removed a 3 ft end(to left of doorway in pic) of a 6 ft load bearing wall and a chimney that was unused. Chimney was not bearing any weight. See pic below. Load bearing wall is wall to right of chimney. This is bearing due to ceiling joists lapped/sistered above it. There was an arched opening just to right of chimney so really the only full length studs supporting the joists was the one to right of chimney and those around the doorway. We built a new wall just 12" behind it and parallel. Even though this new wall is not underneath the lapped joists since it is very close will this be sufficient. There are really only 3 joists that would be unsupported. Span is just over 10 ft.
 

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Discussion Starter · #5 ·
I should note that the 10 ft span I mentioned is the ceiling span from the new wall to the exterior wall. There currently is no full length joist- they are sistered just above the old load bearing wall. I could add a new 10 ft joist sistered to the old ones. Would that be enough to support any load from drywall/plaster ceiling?
 

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I should note that the 10 ft span I mentioned is the ceiling span from the new wall to the exterior wall. There currently is no full length joist- they are sistered just above the old load bearing wall. I could add a new 10 ft joist sistered to the old ones. Would that be enough to support any load from drywall/plaster ceiling?
That is what I meant.
 

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Is it something like this? I imagine the ceiling joists weren't fastened to each other, just toenailed into the top plate of the wall. Is there a strongback/binder across all the ceiling joists? It's just 3 ceiling joists with this new hinge point then, holding up lath/plaster?
 

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Discussion Starter · #10 ·
Is it something like this? I imagine the ceiling joists weren't fastened to each other, just toenailed into the top plate of the wall. Is there a strongback/binder across all the ceiling joists? It's just 3 ceiling joists with this new hinge point then, holding up lath/plaster?
Yes that's how it is. Ceiling joists were sistered to each other. No binder. All ceiling joists are 2x4. I have a 2x4 brace holding up the joists now. But I had unsupported for at least a couple weeks with no issue except one of the sistered joists was sagging a bit.

So if I add a 14 ft 2x4 sistered to the existing that spans the mid load bearing wall of the house to the exterior wall, will that be sufficient? I would add this new 14ft 2x4 along all unsupported joists (3 of them).
 

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Discussion Starter · #12 ·
When I sister a 14ft joist how should I attach it to each joist when they are sistered themselves. If I attach it to one joist at one end, it won't touch the other sistered joist at the other end- if that makes sense??
 

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Sister the new one on the side of the short joist that is on the other side than the opposite joist overlaps onto it. Put a block (or longer length) in the gap between the new 14' and the old opposite joist right over the new wall. If that makes sense. You're just eliminating a hinge while keeping the rafter tie intact.
 
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