Frost Knot Vs Water Knot. Feb 11, 2025 · Hello, I am currently designing concrete dril

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. Oct 23, 2015 · I have an equipment foundation that needs to be frost protected. And yes when I was there we installed and repaired sewer pipes all winter. 2 of ASCE 32 it states, "Foundations placed on a layer of well-drained, undisturbed ground or fill material that is not susceptible to frost shall have the thickness of such a Nov 19, 2008 · 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 Oct 21, 2024 · Hello, What is your opinion regarding the bottom of new foundation for the basement walkout stair? Creating a walkout for the basement will affect the frost line. I am able to calculate the required thickness but have unique site conditions (clay soil, subject to freeze/thaw (frost) action)and am looking for additional design considerations/ criteria. Can a very heavy foundation (while still below the allowable bearing capacity of the soil) eliminate the need to go below the 42" Aug 10, 2015 · Frost depth in busy roads, normal winter 5-7 feet, residential roads 46 feet in the yards adjacent to both roads, 2-3 feet. 2" thick rigid insulation (extruded polystyrene) is thermally quivalent to more than 2 feet of soil 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 recommendations also state that placing friction reducing material can be considered as an alternate option to prevent damage Mar 3, 2011 · A contractor is suggesting the use of 1ft deep, very wide concrete slab to support heavy rotating equipment. On the other hand, if the structure is an unheated warehouse, then they should be protected just as exterior footings are. If you're trying to avoid sinking the wall deeper, consider laying insulation board over the toe of footing, to out beyond the toe edge a few feet. I'm designing an unheated structural slab supported on piles. 2" thick rigid insulation (extruded polystyrene) is thermally quivalent to more than 2 feet of soil . Thanks for the response. any help? Nov 18, 2024 · If the building is heated there is no need to frost protect interior footings. Should I start counting the required 36" from the bottom of the stairs? In addition, the existing house foundation should not be Apr 5, 2011 · In reality the frost depth is a little less directly below the wall, but I wouldn't count on it. Design depth of frost penetration is 2700mm from soil report. May 24, 2009 · Hi all, this may be old to someone but i need your input on frost heave design for my foundation. In section 4. I'm going to use Dow ethaform void form but i dont know how to calculate Mar 3, 2006 · I am designing a thickened edge slab for a garage 28'w x 36'l. In this case, the frost depth is 48". The local jurisdiction has a required frost depth 42in.

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