Frost Protected Building Addition
Frost Protected Building Addition
(OP)
I was out for foundation checks on a building addition project and found out the the original building was simply a SOG over 6-12" of granular material. We have a design frost depth of about 42" here so the addition has been designed to bear below the frost elevation. I am a little concerned about the tie-in location. Structurally speaking, the addition is fully self-supporting, but exterior roof/wall finishes will be tied together. The existing building is fully heated and is a retail building, so the slab will always be kept warm, but I don't think that heat will push deep enough to prevent frost from developing and moving the existing building.
Are my concerns well founded or am I overthinking this one? Is there a good way to seal the building up, while allowing for relative movement between the two buildings?
Are my concerns well founded or am I overthinking this one? Is there a good way to seal the building up, while allowing for relative movement between the two buildings?






RE: Frost Protected Building Addition
BA
RE: Frost Protected Building Addition
If you're really concerned about it and you feel something has to be done you could have them insulate the existing slab on the outside to provide the 42" frost protection.
RE: Frost Protected Building Addition