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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. 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, …

  3. Frost Penetration and Movement | Eng-Tips

    Oct 21, 2009 · Frost penetration and frost depth effects are really two different animals. As OldestGuy indicated, even in very cold climates, they recognize that footings do not have to go …

  4. 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 …

  5. Crushed stone size limitation for non-expansive frostfree fill

    Jun 4, 2008 · Hi, Guys, Need help here. I remember there was a thread before, which discusses about the crushed stone size for use as non-expansive frostfree fill. But I...

  6. 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 …

  7. Exterior Large Equipment Pad with deep frost depths | Eng-Tips

    Jan 7, 2021 · Frost heave isn't really caused by just the moisture in the soil freezing (and the subsequent small volume increase). It becomes an issue when ice lensing happens. This is …

  8. Frost box? | Eng-Tips

    Aug 7, 2008 · 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 …

  9. Frost protection of fill | Eng-Tips

    Dec 4, 2002 · The depth the frost will penetrate below the insulating layer depends on insulating value (thermal conductivity and thickness), initial ground temperature, and of course the air …

  10. Frost depth consideration in existing rock layer | Eng-Tips

    Feb 2, 2004 · 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 …