Tiny House Build #2 Slab Forms/Plumbing/Concrete Pour

All right guys they're starting to put the forms in for the monolithic slab foundation. I don't know if I mentioned this before but this is a monolithic slab that means one so it's poured in one shot. As you can see the edges are deeper and then you can see over there the pad on top is going to come up about four inches and on the sides here that's going to go down about 16 inches. So they will get the perimeter in here 17 going that way 24 going this way. When they have the perimeter in we'll have the exact footprint of the house then the plumbers are going to come in and do all the roughing for water and sewer right here. That's where the sewer taps in there's the water they'll dig it out connect it and get everything exactly where it's supposed to be because once they pour it they pour it. The forms are set and they are ready for the under slab plumbing. So they got the perimeter even and square. There's two feet of space right here for blue board insulation which is going to run two feet vertically and two feet horizontally and the reason they require this is because it's a shallow slab and I would imagine it's also a requirement because I'm here in Montana and it gets very cold. So after they pour it I'll be insulating it as well. So the slab is totally braced up they have these two by fours and stakes and they drill them into the side so the concrete doesn't blow out as they're pouring it because it's going to get pretty heavy and then to make sure it's exactly level what they do is they run a chalk line right there they shoot a laser and you can see the chalk line that runs all across so that's actually where the foundation is going to sit so it's nice and level. The plumbers just got here they're going to grab some fittings and they're going to get started on the plumbing tapping that four inch line that's right there all the drains are going to go into there the water is going to come into the water heater and washer dryer room and then go to everywhere else from there under the slab bathroom and kitchen it's pretty simple all the water and plumbing is going to be concentrated in this area. Plumbers are making quick work of it it's a pretty concentrated area here so here's a line right here which will be the wall this will be the washer dryer and hot water heater room so here you go hot water heater washer dryer toilet that's going to go up to the shower and then further up there we'll go to the kitchen nice big drains everything's coming right down into there and drainage system will work really well in this place all right guys the water meter is just installed we got the water guy leaving and this is one of the most crucial parts especially considering that this was directionally drilled i want to make for sure that this thing holds pressure so those meters are pretty sensitive which makes it great because if you shut this valve off the meter will be able to detect any leaks whatsoever right now we're sitting at a just under 90 and it's been running at the same pressure here for probably 15 minutes so there are no leaks we're gonna fix a few things with the plumbing and start putting rebar on this thing all right the rebar is in they might have a few more things to do i'm not totally sure since they left today but this is the gist of it right here they use these concrete blocks right there and the plastic blocks down there to elevate the rebar so the concrete can get under it to make it stronger now there's a couple things i want to mention over here with the water line as you can see that line is going to run in the footing of the foundation so i took some rebar and pushed it back about eight or nine inches just so it will be protected from freezing all the way back there and then i also put some rebar on this drain right here because when they pour it the pressure from that concrete is going to try to push that pipe down and that's set to drain out to the sewer so i don't want it to move i got two pieces of rebar and i duct taped it right there also ran into a little issue on the so if you're doing something like this make sure to double check everything i was going over the measurements that the plumbers made and the toilet was two inches too close to the wall when you have a toilet in a bathroom it has to be 15 inches from the center of the toilet to the wall and this was more like 13 so i actually had to have them come back and push a little bit further that way besides that everything measures up everything's lined up and everything is square the slab is complete and i wanted to mention a few things first of all this was 22 inches the normal depth of a slab like this is 18 inches so this is a lot of concrete and there's actually a few spots where the forms blew out a little bit over here it's actually a good thing because the water runs on this side so it's a little bit more insulation but over here you can see you can see that bow i'm going to snap the chalk line from end to end because that's square it just bowed right there so i'll snap the chalk line from end to end the concrete will ball out a little bit but the building will be square and plump the next time i build i'm going to do a stem wall this monolithic slab looks great on top and it'll work but after doing this once i will definitely be going with the stem wall next time but it'll do the job and it looks good on top they also cut two cracks that's called a control line so if it does crack it cracks with instead of in a crazy messed up way