Sounds like you're on the right track. I've never had any issues with the drainage piping freezing, because the only time there's ever water in it is when it's already warm enough for your downspouts to be carrying water. Also, it's usually always continuously-sloped, so there's no water staying in the piping. I have these done in three different materials, sch.20 PVC drain pipe near the house, transitioning to 6" corrugated black drain pipe or sch.35 sewer pipe, and no freezing issues with any of these. Depth varies from 1 to 4 feet, to maintain continuous downward slope, across my undulating yard. As long as there's no "belly" in the slope of the pipe, it will always stay dry when not doing it's thing.Thank you thank you thank you Glad to hear there is hope. I will follow your plan to a T (other than slab floor. That will never happen until the house is paid. Or if I get ambitious with a cement mixer and 800 bags of concrete. >.<)
1. Gutters and downspouts are almost complete. I was afraid of the PVC pipes freezing underground. How far down you put them?
2 & 3. Little bit of mortar work at ground level to do and then grading is next.
4 Already did the perimeter drain inside. It's gonna have to be 6mil plastic for now.
5. Bought Dehumidifer early 2017. Just waiting till I finish the work above to install.
6. This is an old root cellar. no access from inside the house. You open a trap door at ground level, then walk down very steep steps to a door into the cellar under the main living area. Almost done sealing the old window areas.
7. I air condition in the summer. But the temperature in cellar never exceeds 16 degrees and I have AC set to 21. I still want to install Reflectix between the joists just for a little added comfort in the winter from the FREEZING floor. If I install Rockwool batts, afraid the mice will get into it.
In the current house, which was built adjacent to a spring (1730's), the prior owner put about a mile of perf pipe under the basement floor before pouring the slab. This is connected into a drain that runs to the storm basin, which seems to be carrying water most of the year, even when it hasn't rained for a week. No issues with this one freezing, even though it's penetrating the storm basin only 24" below grade.
Plastic on the floor? That would probably keep humidity down at least as well as a slab, but there's the obvious durability concerns. Trying to dehumidify with a dirt floor and no barrier might be pretty darn tough, though.