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Old 11-23-2008, 09:56 PM   #1
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Rim joists opinion......


I'm looking for some input on a rotted rim joists.

About a 4 foot section is gone above an access point for the crawl space.
2 floor joists need replacing (1 split in half, 1 cracked & on it's way out).
They are both knotched to fit in the rim joist. I've never seen this type of construction before.
I'll be sistering on new floor joists with the old. Joist hangers will be used.
2-2 x 8 sections will be used to replace the 2 x 4 & 2 x 6 that are on top of the sill. The 2 x 4 will be knocked back & they will be screwed into solid old section.
All new wood will be PT. Hangers will be galvanized.

My question is...does this seem Ok.?
As I said, I've never seen this type of construction before, but I don't see the sense of replacing it to the original.

The problem stems from a shed placed about 6 inches from the exterior wall, which will be addressed in the spring.

The sill plate is questionable if it is still good at this point, but I doubt it will be when I get further into it.

Any thoughts would be appreciated.
Thanks,
Rick

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Old 11-23-2008, 09:59 PM   #2
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Rim joists opinion......


Opps....forgot the sketches
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Old 11-25-2008, 07:29 AM   #3
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Rim joists opinion......


There really isn't a need for a double rim joist. In fact it is probably not a good idea since it will shorten the bearing footprint of the floor joists. Leave the 2x4 since it is already in place. Replace the existing 2x6 with a 2x8.
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Old 11-25-2008, 08:27 AM   #4
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Rim joists opinion......


I believe the 2x4 was acting as some sort of header for the access below. the double 2x8 will act the same.
I don't see any problem with what your trying to do. BOB.
When I frame on a foundation I always double the rim joist over any basement windows or openings. BOB.
OH! you have a 2x6 now for a rim joist, and your going to install a 2x8 do you have the room for the 2" that you will gain, or are you going to rip them down.

Last edited by buletbob; 11-25-2008 at 08:32 AM.
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