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Tim - You still have good weather in Connecticut to pour before 1st frost or not so much a concern? You scheduled a pour?
Winter Mix surcharge starts Nov1, hoping to get it poured in the next couple of weeks, unfortunately site work guy is a flake, should be working now. Bunch of no show days. Got a fair amount of material to move. Had an option of a 6 ft Foundation wall or cut the hill back more and put a mafia block retaining wall in place.
$3500 for 72 ft x 6 ft block wall or probably at least double that for a poured wall.
Still fighting the site, got a big boulder to deal with, I had a bad experience with the first guy.
I have a reputable guy hopefully coming in the next few days.
My building supplier wants just a flat slab but I am concerned about snow buildup along the metal siding vs having a knee wall.
Another concern is using a floating slab in CT due to frost heaving.
I have seen some interesting FPSW (Frost protected shallow foundation)
42" frost walls and footings get pricey.
Mono slab ezforms looks like a good semi DYI way of achieving a FPSW. (but pricey)
Any concrete guys out there or others with cold weather foundation experience?
Thoughts?
I worked three summers pouring foundations, setting walls & pouring walls in Quads in Northern Illinois (Chicagoland) ~50 years ago. Unfortunately, I'm unfamiliar w/ pouring slabs & any of the newer materials. They're called Quads because each building contained four condominiums. So, there were four berths in each Quad building (50'W x 50'L x 8'H = 20,000 square foot) or basements/per condominium (80,000 square foot buildings [Quads]). They were erecting 25 of these buildings (Quads) - about 16 of us per concrete/framing crew per Quad building. Sorry, I digress.
Can't really offer much advice as each of these Quad basements were ~9' below the surface - far from any type concrete pad like you're going to pour. Sorry you're now going to pay the Winter Surcharge. Bad enough the price of concrete alone. Keep us informed & good luck, Tim.
I have a pole barn with a floating slab in upstate NY. It’s five years old and I have zero problems with frost heave.
The key is to have good drainage under and around the slab and not tie the slab into anything that’s fixed. I put a 2x6 between the vertical posts and the slab as an edge form and then stripped it after the slab was placed.
FWIW my barn is set into a steep slope with 2x2x4 concrete blocks at the base of the slope. They haven’t moved. The bottom of the blocks are about 8-12” below the top of the slab elevation.
Last edited by allyolds68; Oct 31, 2024 at 10:55 AM.
I have a pole barn with a floating slab in upstate NY. It’s four years old and I have zero problems with frost heave.
The key is to have good drainage under and around the slab and not tie the slab into anything that’s fixed. I put a 2x6 between the vertical posts and the slab as an edge form and then stripped it after the slab was placed.
FWIW my barn is set into a steep slope with 2x2x4 concrete blocks at the base of the slope. They haven’t moved. The bottom of the blocks are about 8-12” below the top of the slab elevation.
Looks like a lot of potential water coming down that slope. You're not having issues with water in the garage?
Looks like a lot of potential water coming down that slope. You're not having issues with water in the garage?
Ive never had any water on the slab
The slab sits 8” higher than the surrounding crushed stone around the perimeter (and there’s crushed stone between the 2x2x4 block and the bottom of the siding). I also ran an underdrain from the back corner, under the slab, and daylighted the underdrain to the slope downhill from the garage. Between the stone and the underdrain the water is kept below the slab.
I’ve been doing heavy civil construction my whole life. Keeping water from building under the slab is the best way to minimize frost damage and keep the slab dry
I too have a hill to deal with I have 2x2x6 mafia blocks and have been trying to figure out the best plan,
I have about 6-7 ft high hill that is about 17ft from the property line,
I can do 4ft wall without a permit I was thinking two 3ft+ walls with a 6 ft terrace in between.
But after seeing your slope I may be able to get away with one 4ft wall and slope the hill instead of making a flat terrace.
I am planning a french drain and the the soil is very good sand gavel mix,
Doing some planning for the new garage.
I have a Hot Dawg propane heater in the other garage. works well. (Not sure if propane is the safest while doing bodywork etc)
I can easily tap into the same tank for the new garage, I am thinking 80-100k BTU Hot dawg for the 1800 sqft.
Does anyone have other suggestions to heat the 1800 sq ft with 14 walls w18ft apex?
Ready to pour but not ready.
All dug out and ready to pour slab but....
Town was not supposed to approve permit without a state exemption for slab not having 42 inch frost walls.
So as I wait for the state it's getting colder and colder.
Looks like after Thanksgiving at minimum.
I will need some kind of frost protection.
Concrete piers or helical posts.
why are you apposed to a footing and frost wall? That’s pretty much common practice in an environment where the ground freezes. I have a pole barn and the posts have to be embedded at least 48” for that reason (NY). I think CT is 42”
why are you apposed to a footing and frost wall? That’s pretty much common practice in an environment where the ground freezes. I have a pole barn and the posts have to be embedded at least 48” for that reason (NY). I think CT is 42”
I was told by the Metal building people to just pour a slab, the town gave me a permit when the building inspector retired and no inspector was available (they weren't supposed to).
I was under the impression footings and frost walls would be quite costly.
So it comes down to cost, between excavation and concrete I am guessing another 10k or so.
The new inspector suggested an option of helical piers. https://www.technometalpost.com/en-U...t-connecticut/
I will have to compare the costs, he estimated 200 per pier.
So I am thinking 2-3k.
Yes 42inch frost line
Regarding your setup when you removed the 2x6 between your vertical walls you ended up with a 6 inch gravel border around the slab?
Permit and foundation photos sent to building supplier, supposedly starts a 4 week clock for install.
If you're going with a 6" floor slab it's a good idea to thicken the slab to 8-10" where a future lift legs may sit. I thickened about a 6'x8' area for each leg and added reinforcing mesh there. I used fiber mesh for the rest of the slab as well. After over 6 years I don't have any cracks in my slab.
I know it's been been cold & likely weather & the number of jobs they have has something to do w/ it. At any rate, just a couple suggestions. Good time to re-evaluate the needs of your new building and decide if anything is needed prior to a slab pour. A couple examples:
(1) Potable water & waste water (sewage). Now's the time to consider plumbing. You "can" do all the plumbing above grade/ground after building erection; yet, installing PVC pipes, vertical clean-outs is something to think about;
(2) Electrical. Again, you "can" do this after the building is erected; yet, if installing a new electrical sub-panel, duplexes (receptacles), lighting, etc. burying some of the electrical conduit may be nice.
Looking forward to your progress. Stay warm.
EDIT: A French drain maybe for a free-standing shower, possibility of a sump-pump if you think it might be needed.
The town is very picky, any drains or water supply needs to be tied into the septic I may just tie a hose in from the original garage.
Some conduit for electrical might be a good idea but since the floor is going to be poured after the building is installed I think I'm good to wait.
The town is very picky, any drains or water supply needs to be tied into the septic I may just tie a hose in from the original garage.
Some conduit for electrical might be a good idea but since the floor is going to be poured after the building is installed I think I'm good to wait.
Thanks for the tips.
I did all my under slab piping before the slab was placed, located it off known above ground points and buried it, leaving it a couple inches under ground. After I got my final inspection I hammered everything out and connected it....But I was doing almost all the work myself
Last edited by allyolds68; Jan 16, 2025 at 09:15 AM.
Gotcha. Think about it as you move forward. You don't have to hook anything up (won't require a permit) - toilet drain PVC in the slab pour, drain (grates) PVC out to edge of slab. Anyways, just stuff to think about. Enjoy the weather. Ba hum bug for this next round next week.