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  1. "Top" or "Bottom" of Footing? | Eng-Tips

    Apr 5, 2008 · Frost depth always has been and should be to the bottom of the footing. You are trying to avoid a condition where frost occurs in the soil directly under a footing and in which …

  2. Drilled Pier Frost Heave | Eng-Tips

    Feb 11, 2025 · 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 …

  3. Frost Depth | Eng-Tips

    Oct 1, 2025 · Frost depth also tends to presume a bit of "heated building" in the tabulated numbers, so keep that in mind for say, a freezer building, unheated storage, etc.

  4. Slab on grade -thickened edge subject to frost | Eng-Tips

    Mar 3, 2006 · I am designing a thickened edge slab for a garage 28'w x 36'l. I am able to calculate the required thickness but have unique site conditions (clay soil, subject to freeze/thaw (frost) …

  5. Frost Heave Calculation | Eng-Tips

    Jan 10, 2018 · Frost heave can easily be several inches in northern states with frost-susceptible (silty) soils and a shallow water table or just poor drainage. On the other hand, dry, clean, …

  6. Frost depth for turndown slab | Eng-Tips

    Jul 30, 2010 · I have virtually an unheated metal shack. It will sit on a slab on grade with a turndown. Is is necessary for the turndown to bear below the frost depth? In my mind, only …

  7. frost footing vs. monolithic slab | Eng-Tips

    Aug 31, 2010 · when do you draw the line when deciding frost footing with cmu wall for slab support, vs. monolithic slab. reason i ask is that I will have to bring in 4-5' of fill to get slab up …

  8. Can foundation weight allow avoidance of frost depth? | Eng-Tips

    Mar 3, 2011 · A contractor is suggesting the use of 1ft deep, very wide concrete slab to support heavy rotating equipment. The local jurisdiction has a required frost depth 42in. Can a very …

  9. Frost line depth | Eng-Tips

    Mar 12, 2018 · Hello All, How can I determine the frost line depth for a project in Virginia? All I can find in the code is in R301.2 which leaves in up to the locality. The online version of the code is …

  10. How is frost depth determined / calculated? | Eng-Tips

    Dec 17, 2018 · 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 …