Installing a foundation under an existing building part 1: demo, excavation, footings

okay guys so today is raining pretty good and it's a perfect day to start on the new project and i'm gonna start a new series of videos on this this building right here everything that you can see right here needs a foundation underneath of it it has none right now there's a few stacked stones underneath parts of it maybe it goes down a few feet with stacked stones i'm not really sure but it definitely doesn't have a proper foundation underneath of it so yes this could have been knocked down and we could have started over again like the other side but this is going to save some money it may not save some time but it'll save some money so we're gonna put a four foot foundation underneath this so the first thing we're gonna do is put an opening in this end of the building this end is the gable end it has no weight on it the weight is all on the evens so i'm gonna make an opening here big enough for the excavator to come in and i'm gonna dig down like four and a half feet for this foundation and over on these eve ends we're going to leave the wall as far down as we can and then just cut the bottom of the wall enough to put the foundation in and so kind of the plan is that i'm going to put some beams on that wall going from where it's supported over there all the way to the end and then extend it beyond and put some posts down same thing on that side and then the evens will be supported and then we can cut the bottom of the wall out and leave enough room for the foundation so inside this area this is a bedroom and this is a bathroom and so this is the areas that we need to put a foundation underneath the rest of the house now has a foundation underneath of it so from there all the way around to there doesn't have a foundation it's it's probably stacked on a few stones but it's not four feet down and it's not sealed up so air gets in animals get in so what we're going to try to do is save everything above the windows and i may have to take out the windows to put in this foundation maybe not i mean i definitely got to take those out because this is going to be where we access with the excavator but i'm going to try to save the windows on the side and not have to take them out and put them back in again so we're going to take out this dividing wall right here and the trusses appeared at first to sit on this wall and rest weight on it but then when i looked underneath there's really nothing underneath here so i think we're going to try to support that with a small beam and then put a post underneath of it but i don't think it's got crazy weight on it so the idea is that we're going to rip up the floor put a new foundation underneath and then reframe the floor and then reframe that wall and so i'm going to come through this area right here take out these windows and maybe a few feet beyond that and then i'll have access with the excavator the excavator is eight foot six tall so it's going to be really tight with these beams but i'm also going to be another foot down so normally i would try to save this kind of wood and reuse it somewheres but the bottom side of this is like a foot from the ground and it's seeing its days with animals and moisture and mold and stuff so i don't think it's really worth saving so we're going to tear that up just cut it up with a sawzall and tear it up and then we'll have a place to work [Music] [Music] [Music] [Music] [Music] [Music] so [Music] so [Music] so [Music] [Music] so [Music] [Music] so [Music] so so [Music] [Applause] [Applause] [Music] [Applause] so i established the level that we're gonna be at here this is five foot down from the top of the foundation that we put in before on the other side that leaves eight inches for footings and four inches for gravel and then four foot for the wall so we still got to get this nice chunk here that side we gotta scrape down to make that look better so we're gonna try to dismantle some of this rock wall here and then i'm gonna start on this side and put the beam up and take the dirt out from underneath of it [Music] [Applause] just dug this down a little deeper and then i'm going to set this post here to hold up this beam beam's gonna cantilever over that's just solid concrete filled blocks [Applause] [Music] [Applause] [Music] [Music] see if there's any sag on this beam not eating [Music] so i just got to get rid of this pile here it's kind of in my way to keep digging what i did before i left the other day was dig this out so it all pitches downhill all the water goes that way i had a feeling we were going to get some heavy rains i didn't want to get it all flooded in here so the only water that got in is this little bit right there that's it everything else is completely dry so we got our level established out there so now we just got to tamp it down and put some gravel on and then we're ready for the footings so i just got to get the rest of this gable end dug out and then i got to get this evened over here [Music] [Music] so [Music] so [Music] [Applause] [Music] okay so we got this side supported and i did a little bit more work to get it supported because you can see the roof is lopsided and it has more weight on this side than the other side that one only has like a nine foot horizontal span on that so it's not that much weight but this one is almost twice that so i wanted to make sure i got an extra post there and i got that diagonal piece i'll probably end up just doing that here too so you can see the way we did it is there's a post directly underneath and then these on the back are basically to support everything and keep it straight so to have two pieces next to each other everybody thinks that's a post that's strong it's not really that strong though because it can buckle it can buckle like this so if you have two pieces of wood it's always stronger much stronger to make a tee like this you see than it is to have two of these together and that's because they're both going different directions with the grains so they work against each other and with each other at the same time and i put these diagonal pieces going across here because the way that these lvls work is they're so thin and tall that the first thing that happens when you put a lot of weight onto them is they start buckling like this so that's why we have those diagonals there because that way it can't move like this it also squares it up with the building so in case somebody knocks it with a bucket it's not going to break something so once i get this other event dug out then i'm going to put another small beam on the top here just to hold up that little bit of wall right there because it's not holding up the roof at all and then i'm going to dig out this last [Music] [Music] [Music] so [Music] [Music] [Music] [Music] oh [Music] [Music] me [Music] [Music] [Music] all right so that's about where we need to be i just got this one last chunk here from here to there and then i got this whole side to do the trusses kind of have a step up right there it's kind of hard to see right now but so right there i'm not sure if i need to support that or not it wasn't really supported before but that doesn't mean it shouldn't have been supported so i think i'm going to put a post right in the middle here and then i can take that post away and then i can get the rest of that i'm just trying to load this dirt out of [Music] here [Music] so i'll show you what we're working with here it's getting kind of muddy right now [Music] is where we're dumping all this fill pretty much everything you see here is from the edition which is an enormous amount of fill [Music] and then that new pile is from what we're doing now everything you see from there all the way across there except for that pile and that pile are from the addition you can see it's all muddy right here so that's where we're dumping it and where we're taking it from is way over there you can see probably be a little bit more efficient take the dump truck and fill it up and bring it over but it's just too muddy over here to do that all that thing as right go up here um so so [Music] oh [Music] [Music] so [Music] so [Music] so in case you guys are wondering how these tracks are working let's try this out [Music] [Music] [Music] they're a little rough when you have hard packed ground like this and there's gravel on it and it's packed down but over here where it's really muddy we couldn't do anything before as a matter of fact earlier this year it got so bad that we had to stop for a little while and actually had to get the tractor instead of the skid steer it's just really muddy here [Music] see these ruts are over a foot deep [Music] just being able to get through this never mind actually doing something while you're going through just being able to get through it is more than we could do before just going through that patch right there is more than it could do before [Music] [Music] pretty much run out of power before you start slipping [Music] but even a dozer is going to lose traction if you push too hard [Music] [Applause] [Music] so [Music] just one little rock holding that whole thing up [Music] so right i just wanted to make sure i wasn't in the building when i took that last little rock out but you can see it's all up in the air now really not that much weight on it though really wasn't too worried about it these are two 14 inch lvls they can hold quite a bit of weight plus i got that mid support there there's like seven feet of wall that i'm holding here but a lot of it's sheered up to right there anyways from the plywood [Music] [Music] [Music] so [Music] [Music] [Music] [Applause] so [Music] so [Music] [Music] [Music] uh [Music] all right so right now i'm just trying to keep some of this dirt here for backfill so there's a lot of rocks in it and i want to separate them and then stockpile it right here you can see there's a lot of rocks in here so i'm just going to sort them out and that stuff's just gonna go back in the field over there and that way i can have a pile that i'm gonna cover up with an insulated blanket and i'll have it for backfill [Music] about to have this all closed up where the heat will stay [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] it's been pretty cold the last few days so what i did or what i'm in the process of doing right now is just putting these insulated concrete blankets on the fill that way we have something to backfill when we're done because otherwise we'll just have a clump of frozen dirt and that doesn't really do much good another one over here these are like triple layer they work really well they're i think they're 12 by 20 sheets i got like i don't know 25 of them something like that so we're ready to pour the footings so we're drilled and epoxied right into the old foundation there well it's not really old we just put it in but the existing foundation got a snorkel there so i've done work like this before in the winter where i put in a foundation in the freezing weather it's not terrible but it definitely takes a lot more time and you got to keep these propane tanks switched out i got this one which can put out a massive amount of heat but that's on low right there but then i figured out how to actually put it even lower than that when you want it overnight but then i also have this big body heater here that works really well we need to be able to heat not just the concrete but outside of it too like at least a foot 18 inches on the outside of it we don't want the frost to creep underneath these footings either propane gives off a lot of moisture when it's burning so that's why there's a lot of ice oh hmm um [Music] morning so hello [Applause] [Music] so [Applause] so i was a little bit worried about this snow last night i am so glad to see that that is still standing and all the plastic is still on it i can see there's some condensation on the inside which means the heat is still going everything looks good it's about 18 inches of snow doesn't look like those beams are sagging at all that is wonderful news i was just really hoping that the wind didn't blow down that plastic or the combination between the wind and the heavy snow because i definitely don't want anything to freeze near those footings so i got the skid steer here i thought i was gonna have to snow blow my way in to this good steer but i just kind of rammed it through just barely made it though i gotta snow blow my way to the skid steer it's right over there [Music] you [Music] okay so you can see the snow came up pretty high on the sides there but we're all good in here it's nice and warm it's pretty cold out i don't know in the mid teens 15 18 degrees something like that so we just need to strip these forms and then we'll place our vertical rebar and put in the icfs insulated concrete forms we've got these extra supports here just for the snow load and that piece on the bottom so it doesn't spread out the piece on the top is to kind of hold those together at the top kind of like a roof but i just figured i'd put one on each side here just for a little bit of extra support because we have a 50 pound snow load here so i don't know if it's 50 pounds per square foot on this storm but it's probably at least 30. so whenever we're doing a cold weather pour like this i always like to check the temperatures you can use just a regular cheap infrared gun you can use a thermal imager and check see out there is like 37 36 degrees and then the actual footing itself is 46 45 degrees and so it's really important that you check both the footings and like a foot or two outside of the footings because you don't want that to freeze either because then it'll start freezing underneath of the footing and then you'll have a problem but if you use a clean gravel like this then you really don't have to worry too much about the freezing this stone has a lot of voids in it so the water can freeze and expand and it doesn't really change too much but it's still definitely a good idea to try not to get anything freezing around it or underneath of it so you can see like up here in the walls it's a lot hotter and then when you get up to the ceiling it's even hotter the cool thing about this thermal imager though is you can see the studs in the walls you can see that it's not insulated too well with the studs so here's a wall that still has sheetrock on it now you can actually see where the studs are that is a gfci so you can see there's a stud right there check out how sensitive this is though i'm just gonna put my hand right up to this wall right here okay i didn't touch it yet i'm just gonna touch it for one second ready watch here let me show you there's my hand all right i'm gonna touch it for one second touching not touching check out how sensitive that is yeah i'm gonna do a half a second this time right ready all right gonna touch it now half a second right there all right now i'm going to touch it for like five seconds this time one two three four five you can still see the first one so that was just sheetrock here's just plastic right here let's see i'm gonna touch it for one second one second that's it see i imagine that plastic will dissipate the heat a lot quicker yep yes yeah it's already disintegrating let me see with this concrete here i'm going to touch this real quick i'm going to touch it for five seconds look there's the footing dissipates pretty quickly on the concrete yeah i'm going to touch this cold metal right here on this heater for one second one off oh wow that didn't actually make a lot of difference on that huh all right let me do it for five seconds okay wow look at that i think it's spreading the heat out more than anything i did not expect that so you can see there's some heat coming out of the bottom a little bit out of the window while it's cold snow is 16 degrees 15 degrees should be a little heat left in that skid steer since i was using it that was hours ago though you can see the soffit is lit up a little bit i'm sure that's because the exhaust vent isn't working that great right now because of the snow that's covering up the exhaust so it's kind of like exhausting out of the soffit which is not really ideal but there's really nothing you can do about it well anyways i got to get shoveling off that roof i don't really trust it even though it's holding up i want to take at least some of the weight off of it so i'm going to go up there and shovel it off so on the next video we're going to be installing the icfs and waterproofing them and doing a rat slap and then we'll probably do another video for the floor and maybe another one for the rest of the stuff [Music] [Music] [Music] you

Channel: Jesse Muller

Views: 263,334

Rating: 4.9328022 out of 5

Keywords:

Id: McEqhQ-y-Xs

Length: 59min 2sec (3542 seconds)

Published: Sat Dec 19 2020