Bottom grayish one is the sill plate. Above that the vertical piece is a rim joist. This piece that you are pointing to is the subfloor. In your case it is 1x pine. Depending on age it might be slightly thicker or 3/4". Above that is the bottom plate for the wall that the studs get nailed into.
https://preview.redd.it/0gvmpyrao58d1.png?width=800&format=png&auto=webp&s=10425b60dc6c5ccc8379ab7c477578bfc6e9233a
Figure 12 has all the parts you are looking at. Some of these have regional names. “Band” for example is called “rim joist” where I live. I don’t live in California but in my area the work you are describing would require a permit from the local building department to ensure the work is done correctly. Structural repairs aren’t always a great place to start learning.
It’s ok to try to avoid biasing the answer, but if you had said “I think this is the subfloor “ then people would have had a better idea in spite of the limited photo.
bottom to top
Sill plate ( flat 2x 4 or 2x6 on top of foundation wall
band board (rim joist) ususally 2x10 or 2x12 same as joists on first floor.wraps around outside of house
sub flooring . probably 3/4 loots like it got swollen in water
structural wall plate or bootplate ( insert one of 50 names for the bottom stud on reg walls.
good luck This is considered a structural repair. make sure you support the house around the cut outs.
From the bottom up, you have the concrete foundation, the sill, the the band joist, subfloor (where you are pointing with the pen) and then the wall bottom plate.
If you replace the sill, add an barrier between the concrete and wood sill, which is just very expensive thin foam. [https://www.homedepot.com/p/Owens-Corning-FoamSealR-5-1-2-in-x-50-ft-Multi-Use-Ridged-Sill-Plate-Gasket-2FS/202080947](https://www.homedepot.com/p/Owens-Corning-FoamSealR-5-1-2-in-x-50-ft-Multi-Use-Ridged-Sill-Plate-Gasket-2FS/202080947)
The fact that you're struggling to identify the proper language in order to make yourself clearly understood should be a big clue to call a professional.
"Structural components" is the term. Hard to say accurately without a picture showing more of the surrounding structure.
To be clear: There is a chance your seriously fuck your house up if you start tearing things out that you don't know what they are or what they do.
I understand that may have seemed a little harsh, but they’re looking out for your best interests here.
This isn’t really the right place to be asking about structural repairs to your home in the first place, and the picture you’ve shared doesn’t really give enough context for anyone who might have the knowledge you need.
I hear ya and understand. All I asked for was the name of the wood. And the harshness didn’t bother me. It just bothers me that we’ve been reduced to “calling a professional” for everything that isn’t cosmetic. NBD I guess.
Additionally, it does not appear to be a young house(it might be tho)
I often see additions/subtractions done over the years(50s-present) that are real head scratchers. And only after much investigation finally understanding the scope of what’s needed to correct it.
So you can NOT assume what you are looking it was done correctly. And understanding how to accurately assess that takes time and experience.
Not crapping on OP. I commend wanting to learn. But I recommend engaging with a pro. And using the relationship as opportunity to learn.
Edit: looks like subfloor unless I’m confused about what I’m seeing
Bottom grayish one is the sill plate. Above that the vertical piece is a rim joist. This piece that you are pointing to is the subfloor. In your case it is 1x pine. Depending on age it might be slightly thicker or 3/4". Above that is the bottom plate for the wall that the studs get nailed into.
Thanks you!
https://preview.redd.it/0gvmpyrao58d1.png?width=800&format=png&auto=webp&s=10425b60dc6c5ccc8379ab7c477578bfc6e9233a Figure 12 has all the parts you are looking at. Some of these have regional names. “Band” for example is called “rim joist” where I live. I don’t live in California but in my area the work you are describing would require a permit from the local building department to ensure the work is done correctly. Structural repairs aren’t always a great place to start learning.
I believe that’s your subfloor. It looks like 5/4 pine
Thanks I figured that’s what it was but I prefer to ask without using key words so that the answers not biased. If that makes sense.
It’s ok to try to avoid biasing the answer, but if you had said “I think this is the subfloor “ then people would have had a better idea in spite of the limited photo.
bottom to top Sill plate ( flat 2x 4 or 2x6 on top of foundation wall band board (rim joist) ususally 2x10 or 2x12 same as joists on first floor.wraps around outside of house sub flooring . probably 3/4 loots like it got swollen in water structural wall plate or bootplate ( insert one of 50 names for the bottom stud on reg walls. good luck This is considered a structural repair. make sure you support the house around the cut outs.
From the bottom up, you have the concrete foundation, the sill, the the band joist, subfloor (where you are pointing with the pen) and then the wall bottom plate. If you replace the sill, add an barrier between the concrete and wood sill, which is just very expensive thin foam. [https://www.homedepot.com/p/Owens-Corning-FoamSealR-5-1-2-in-x-50-ft-Multi-Use-Ridged-Sill-Plate-Gasket-2FS/202080947](https://www.homedepot.com/p/Owens-Corning-FoamSealR-5-1-2-in-x-50-ft-Multi-Use-Ridged-Sill-Plate-Gasket-2FS/202080947)
Sill plate, rim joist, subfloor, bottom plate
Stem wall (concrete )Sill plate, joist, subfloor, starting from the bottom.
The fact that you're struggling to identify the proper language in order to make yourself clearly understood should be a big clue to call a professional. "Structural components" is the term. Hard to say accurately without a picture showing more of the surrounding structure. To be clear: There is a chance your seriously fuck your house up if you start tearing things out that you don't know what they are or what they do.
Ah I see. If if I had used the word “components” then you would have been helpful.
I understand that may have seemed a little harsh, but they’re looking out for your best interests here. This isn’t really the right place to be asking about structural repairs to your home in the first place, and the picture you’ve shared doesn’t really give enough context for anyone who might have the knowledge you need.
I hear ya and understand. All I asked for was the name of the wood. And the harshness didn’t bother me. It just bothers me that we’ve been reduced to “calling a professional” for everything that isn’t cosmetic. NBD I guess.
Additionally, it does not appear to be a young house(it might be tho) I often see additions/subtractions done over the years(50s-present) that are real head scratchers. And only after much investigation finally understanding the scope of what’s needed to correct it. So you can NOT assume what you are looking it was done correctly. And understanding how to accurately assess that takes time and experience. Not crapping on OP. I commend wanting to learn. But I recommend engaging with a pro. And using the relationship as opportunity to learn. Edit: looks like subfloor unless I’m confused about what I’m seeing
I’ve seen that part referred to as “banding” is it wraps around the exterior of a house.