Chadwick Holmes wrote:So, any roof wieght or roof loads are directed straight down through an engineered system that contains the load in a plumb force, if there were parts missing the roof load could under some circumstances begin to spread your structure. This is why in old block shops from the 50s you will often see an all thread bolt every ten ft going from one wall to the other perpendicular to the ridge of the roof.
Just a reminder to watch for it that's all, once it moves it's difficult to move back into place.....
So, any roof wieght or roof loads are directed straight down through an engineered system that contains the load in a plumb force, if there were parts missing the roof load could under some circumstances begin to spread your structure.
Kieran Chapman wrote:Title sounds a little wacky. My house is divided by a large steel I-beam, and the crawlspace below (dirt floor) has one side about 4' deep while the other side is barely even a foot from the bottom of the joists. I've played with the idea of building some kind of mass heater for a while, and considered what it might take to actually support the stove above the crawlspace. This year I actually built a short, fat cob wall around my wood stove directly above the I-beam, but for a larger object, it would need to be continuously supported. I considered opening a hole in the floor, and building four walls down into the crawlspace and then infilling with rubble, and placing the stove on top, but then I thought, "why not just fill the whole thing?" Well, not the whole thing, but the half of the crawlspace that's already relatively shallow. There's no plumbing or electrical work there. I was just curious if anyone's ever done anything like this in an effort to gain more thermal mass and potentially install in-floor heating. I've also considered installing some kind of Japanese style hearth or Korean Ondol sytem.
My plan was basically to build a a nice thick stacked stone wall (broken concrete) directly under the I-beam, then tear up the wood floor in my living room, cut the joists away, host a wheel barrow party to fill in the empty space, and build up the layers as if you were doing a normal earth foundation and/or earth floor. The main issue I see is the pockets at the sill where the floor joists are currently resting. The stud walls are resting on the floor joists and rim joist, so removing the floor joists would require, at the least, fitting in another rim joist to replace them. I'd also be nervous about the earth floor resting directly against the rim joist, number one due to potential moisture, though that issue could be mitigated with some kind of membrane/vapor barrier, but number two do to the potential lateral thrust of the earth. Theoretically it would only be about 10" of earth/gravel/etc, since that's the height of the rim joist, and it wouldn't be shifting over time, but the house isn't old enough to have used a massive sill plate, but it's not young enough to have significant mechanical connections between the rim joist and foundation.
Thoughts? Or just a lot of work for not much return?
The only alternative I really see is I go buy a bunch of foam board and properly insulate the crawlspace (I've already sealed it as well as possible), and then try to pipe some warm air down in there from the wood stove so I can stop walking on cold floors all winter...
I'm wondering what the best way to treat the joist pockets would be. They would still have the floor joists stubs in them. Could I just install insulation and add blocking in between the joist stubs and then extend my wall (lath and plaster) down to meet the new floor?