Allen made up the rebar mats for the walls while I cut the plyform etc. We did not pour any footings and will pour a little dirt/mortar floor later. Due to the thinness of the walls and the hardness of the dirt I think this will be OK. Normally, I would always pour some kind of footing but, as we say on the big jobs, we ain't building no piano. The 2 holes in the ground are for the door frame.
This is a detail of the of the forms; I didn't think this was a very good shot but maybe it's clear enough to see what we did. The forms are basically 3/4" plyform (not regular plywood although that would be fine) with 2x4's nailed on the edges to stiffen. Plyform is plywood (usually fir) that has been treated with an oily release agent. It has a good smooth surface kinda like BC and is great for sheathing later because it resists moisture. We did not use snap ties because, as far as I know, they don't make 4" ties but these walls were not hardly big enough for them anyway. The little, wooden block in the photo acted as a snap tie in that it kept the forms a certain distance apart and, being PT also, will be left in the walls to screw the wood framing down to. We ran galvanized screws halfway into the sides of the blocks to help them bond into the concrete. There are also 2- 3" PVC sleeves down in there to form a passageway for the water pipe and electrical conduit to run through the walls.
This is just me floating off the top of the walls trying to get them pretty much on grade and fairly smooth so the bottom plate of the wood framing will sit nice. The interior forms we set at grade but for ease we just let the outer forms run wild on about half of it. We couldn't do a lot of digging or disturbing ground without it falling into the wall forms.
We started mixing and pouring about 3:00 p.m. and finished around 7:00. We used 28, 80 lb. bags, so we poured 2,240 lbs of concrete ( doesn't include the water) with a 5 -gallon bucket. We took turns mixing but we were wore slap out by evening to say the least. If you are wondering why didn't I just order concrete, well, I'll tell you. Even all that wouldn't have made quite a yard of concrete. All the batch plants up here charge a 3-4 yard minimum and with concrete going up to $91.00/yard min. it was much cheaper this way. Plus, we would have had a major time getting a truck up in the woods where this thing is, if it would have been possible at all. Now, we could have laid 8" block and it would have been cheaper (maybe not much) and easier ( sorta) but we just prefer poured concrete. Maybe we are gluttons for punishment. Oh, BTW, the local building supply once again beat Lowe's and Home Depot on prices. They were about 50 cents cheaper per bag on the Quikcrete than the big box stores. How is that possible? Hhhmm. Something stinks in Denmark.