You are trying to avoid a condition where frost occurs in the soil directly under a footing and in which case the soil expands (or rather the moisture freezes and expands within the soil matrix) and dislocates the footing. It seems to me that there are a ton of variables that could affect frost depth, so am just curious how these numbers are typically determined. On the other hand, dry, clean, sand or gravel may freeze without heaving
🏔 Frost ️: RTX 4070 12GB | Ryzen 7500F | 32GB DDR5 RAM | 1TB SSD | 4
Heave can vary a lot from year to year depending on moisture conditions and weather.
Hello, i am currently designing concrete drilled piers, and per the geotech report, the recommendations incur a 1600 psf design stress for potential frost heave
The recommendations also state that placing friction reducing material can be considered as an alternate option to prevent damage. Hello all, this is my first post here so please bear with me Where do you go to find accurate frost depth/line values At my job, we often have to design footers/foundations rapidly so as to get them to a costumer for the purposes of an estimate
Because everything needs done asap, contacting. No, frost depth is not always required if what you are supporting can withstand the movement However, for most pipe racks we have designed we have gone to frost depth There have been a few short runs where the client did not want to go that deep
We informed the client of the potential heave and the possible issues (similar to you describing).
Frost penetration and frost depth effects are really two different animals If i propose to install a strip footing of reinf Concrete for live and dead loads such that design allowable soil bearing capacity is 8000 psf.do i have to be concerned about the fact that the existing rock layer is above the frost line? A frost box is probably a term for a variation (enhancement) of the sheet insulation over the pipe, where vertical insulation is placed along the pipe to better protect the pipe & contain the heat.
If frost depth is determined for a county, how many tests do they perform before the county is satisfied with their estimate of frost depth Is climate change taken into account in frost depth calculations
