Questions tagged [frost-heave]

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How to build a shed ramp and account for ground heaving

I live in the Baltimore Maryland area and have recently built a shed on a shed pad that is about 8 inches of 57 stone to promote drainage. I built the shed floor joists using 2x6 pressure treated wood ...
Irish Redneck's user avatar
3 votes
3 answers

What is a suitable post hole depth for a 4' fence?

Would 21 inches of post below ground be enough to support 4 feet picket fence (wooden)? I have dug holes 25-26 inches and planning to fill 4-5 inches of gravel. I am planning 8 feet panels (only 3 or ...
vabii's user avatar
  • 145
3 votes
3 answers

Can I join two 4x4 fence posts?

I purchased 6’ 4x4’s to put up a 4’ fence. I learned about digging below the frost line after. So now the non returnable 4x4’s I have are too short. Is it possible to join two 4x4’s together to make ...
Randy 's user avatar
  • 31
0 votes
0 answers

How do I design a foundation that will be frozen and thawed yearly?

I currently have a 12x12 insulated shed on slab on grade. I use it to store seedlings during the planting season. I pre-chill the room by opening it in winter and using a box fan to circulate air ...
Sherwood Botsford's user avatar
2 votes
2 answers

Foundation design for a small cabin

I'm planning to build a 14ft x 16ft A-Frame on grade in Vermont this summer. The frost line here is 4ft. My site is at the top of a small, wooded knoll. I know from some exploratory digging that The ...
4restg's user avatar
  • 21
0 votes
0 answers

Water pooling against the garage, limited drainage options

I have a single family home in the city in MN. My detached garage abuts the alley, and I have a concrete slab next to it that spans the rest of my small property line (basically the back of my ...
Skc45x's user avatar
  • 93
0 votes
1 answer

Greenhouse wood foundation and frost heave

I'm a novice constructing a 8x12' saltbox style green house made from recycled single pane windows in climate 5 & 4 Marine. It does get freezing here in winter with maybe an inch to three of snow ...
Vetsin's user avatar
  • 105
2 votes
2 answers

Estimating frost heave displacement?

I'm planning a storage shed underneath a deck. I'll assume that the deck is anchored below the frost line and won't move when the ground freezes. I'd like to build the shed on just a floating gravel ...
Tim's user avatar
  • 161
0 votes
0 answers

How to retrofit a slab for protection from frost heave

One structure on our property is built slab on grade. Located in the US in climate zone 6. This is a heated space which we will be removing part of. The removal will expose a lot of the slab to the ...
StayOnTarget's user avatar
  • 5,435