Frost Protection For Retaining Walls and Fences
Frost Protection For Retaining Walls and Fences
(OP)
Situation: Small rear yard that will be lowered such that is approximately 24" below the adjacent yard on each side. On top of the small retaining wall there will be a new fence, possibly brick masonry but possibly something more flexible.
Is the minimum frost depth required for situations like this? That's 4ft in my case. The code states 'for buildings and other permanent structures'. It is quite a bit of work to excavate a continuous trench 4ft in addition to the 2ft lowering of the yard - this will require engineered sheeting and shoring drawings for the building department. I am just wondering if this is excessive for a fence and small retaining wall. What is the risk of not adhering to this and going with say 24"? Frost heaving may damage the fence? Any chance of it leading to instability of the wall?
Is the minimum frost depth required for situations like this? That's 4ft in my case. The code states 'for buildings and other permanent structures'. It is quite a bit of work to excavate a continuous trench 4ft in addition to the 2ft lowering of the yard - this will require engineered sheeting and shoring drawings for the building department. I am just wondering if this is excessive for a fence and small retaining wall. What is the risk of not adhering to this and going with say 24"? Frost heaving may damage the fence? Any chance of it leading to instability of the wall?






RE: Frost Protection For Retaining Walls and Fences
I don't like to use brick in contact with soil.
Have you considered segmental pre-cast walls?
Dik
RE: Frost Protection For Retaining Walls and Fences
RE: Frost Protection For Retaining Walls and Fences
RE: Frost Protection For Retaining Walls and Fences
RE: Frost Protection For Retaining Walls and Fences
MiketheEng - I have recommended versa-lok, thanks - they just wanted to know the requirements if they did not go this route.
RE: Frost Protection For Retaining Walls and Fences
RE: Frost Protection For Retaining Walls and Fences
b) place a layer of non frost susceptible soil below the footing
c) use 4 feet deep round pile footings to support your wall