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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. 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 …

  4. 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 …

  5. 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 …

  6. Preheat coil on AHU - cold climate | Eng-Tips

    Mar 31, 2004 · The "frost thermostat" you mention is commonly called a freezestat. It is normally an averaging sensor installed downstream of the preheat coil, and it is wired into the fan …

  7. Stoops | Eng-Tips

    Mar 7, 2008 · Stoops are any sort of entrance entity that is situated adjacent to building exits. They serve two main purposes: 1. Provide proper surfaces to exit on, such as a landing, …

  8. 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...

  9. How to insulate a shallow water line | Eng-Tips

    Oct 6, 2008 · The frost line here is approximately 42" and the water within the sprinkler system will not be flowing unless there is a fire in the building, so we believe that there is a real pottential …

  10. 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 …