Yes, they drill holes into the ground to a depth appropriate for one's geography and well below any "frost line". For here, that's 36". A cast high strength concrete "cookie" goes in the bottom of the hole, the posts are stood on top of that (they have uplift-prevention plates on them), a couple bags of dry high strength (5000 psi) concrete gets poured in the hole and then the holes are backfilled while the posts are held plumb. There are other ways to do this, including using posts with pre-cast concrete bottoms (a standard on many Morton buildings ... $$$$$) or pouring piers and using heavy steel brackets to mount the posts. Posts can also be mounted to a traditional poured foundation with the same heavy brackets and that's often used for "barndominium" type structures. What load needs to be borne is kept in mind when choosing how to support the structure. The bigger and heavier the building, the stronger this has to be made as the weight of the building bears on the posts and only the posts. My building is a "baby building" at 24x36x10, so the method we used was more than adequate for several of my remaining lifetimes of service.Did the posts get buried in the holes? Was there concrete involved?
Using rigid foam insulation board under a slab on grade has been done for quite a while now
We started doing it back in the 1980's
You do it one time - and it pays back in heating savings over the entire life of the building
The foam doesn't degrade, and it doesn't detract from the structural strength of the slab
You'll see it used more often just around the building's perimeter, where it extends in about 24" from the outside edge of the building
By installing insulation around the perimeter, it stops the frost and cold from creeping in - like thermal break
Running insulation under the entire slab like Jims done will allow the whole floor to warm up relatively quickly without transferring its heat down into the sub-grade
It should make for a real comfortable shop with a nice even temperature - no cold feet!
You're spot on with 11 yards for the floor and small apron.Should be right around 11 cubic yards of concrete at a full 4" thick
How did the pour go?
You're spot on with 11 yards for the floor and small apron.
Pour went very well and since the concrete supplier is literally around the corner (less than a half mile by road) the two trucks were actually "on time". The foreman will be back tomorrow morning to cut the relief lines and also deal with some "fuzziness" that's there from the fiber mesh that I'm not happy with. I'm not expecting a polished floor, but it needs to be smooth. They will deal with it.
The concrete folks were back today to cut the relief lines and also brought a big floor buffer with an abrasive pad. The pad got most of the "forest" of fibers and they left me a nice, unopened 5 gallon container of sealer to roller apply once the dust settles and I can clean it better. This should deal with any remaining fibers which are only on the surface now, not sticking up.Yeah, those fuzzies sticking up from the fiber-mesh don't look good at all, but they will wear off pretty quickly - or they can be eliminated by a pass or two with a power trowel after the surface tightens up
With the way you prepared the sub-grade, you should have an excellent floor
I'm glad things went well
The concrete folks were back today to cut the relief lines and also brought a big floor buffer with an abrasive pad. The pad got most of the "forest" of fibers and they left me a nice, unopened 5 gallon container of sealer to roller apply once the dust settles and I can clean it better. This should deal with any remaining fibers which are only on the surface now, not sticking up.
The floor really is great...pretty much darn level. (which was a goal after enduring a sloped floor for decades in the old shop at the old property) I wish I could have done a wooden floor, but that wasn't in the cards, so serious anti-fatigue mats will deal with it once I'm moved in and have things arranged. But that's likely months away due to both the work I need to do as well as being careful with money, given the market is down at the moment. I need to reduce what I'm withdrawing monthly for a bit.
I tend to buy larger, for purpose, anti-fatigue mats. I do need to find a new supplier as I'm not willing to do business with the previous one for personal reasons, but have identified a few possibilities.. "I like big mats, I cannot lie..."That's fantastic Jim! I love your new shop!!! Can't wait to see that floor. I have those rubber, interlocking, mats in my little shop and they work really well vs. standing on a hard floor. They were pretty cheap too if I recall. I think each square is 2x2 and it went down in no time flat.