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- Top or Bottom of Footing? | Eng-Tips
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 case the soil expands (or rather the moisture freezes and expands within the soil matrix) and dislocates the footing
- Can foundation weight allow avoidance of frost depth? | Eng-Tips
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 heavy foundation (while still below the allowable bearing capacity of the soil) eliminate the need to go below the 42"
- Drilled Pier Frost Heave | Eng-Tips
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
- Frost Depth | Eng-Tips
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
- Frost Heave Calculation | Eng-Tips
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, sand or gravel may freeze without heaving Heave can vary a lot from year to year depending on moisture conditions and weather
- Stoops | Eng-Tips
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, stairway, ramp, etc 2 In freeze areas, provide a deep enough foundation underneath to avoid frost heave and the resulting jamming of the door as it tries to open
- Frost line depth | Eng-Tips
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 blank in this section Any help would be appreciated
- When to Go Down to the Frost Depth | Eng-Tips
I always hear that the footings have to be placed below the frost depth but does that apply to any footing? For a job where the local code indicates frost depth of 42”, all exterior bldg footings are placed at that depth but when it comes to the exterior stairs, they only go down 18” only!! The
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