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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
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
Is Frost Depth Always Required? | Eng-Tips 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
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
Frost box? | Eng-Tips 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
Frost depth | Eng-Tips What happen if you cannot achieve frost depth on retaining wall Can you put helical piers underneath the wall to counteract lifting from the frost? How do I know how much I need?
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 protection - void form thickness design | Eng-Tips Hi all, this may be old to someone but i need your input on frost heave design for my foundation I'm designing an unheated structural slab supported on piles Design depth of frost penetration is 2700mm from soil report I'm going to use Dow ethaform void form but i dont know how to calculate
Frost Line for Grade Beam with Piles | Eng-Tips If piles are driven, with a concrete grade beam poured over the pile cap, does the bottom of the grade beam have to be poured below the frost line, or having the piles driven below the frost line complies with placing foundations below the frost line