2009年12月28日 · Frost heaving goes in the direction of least resistance. I have seen many a house basement wall shoved in by frost. While the subject of capillary action is used by some to explain frost heaving, it more likely is due to combinations of other mechanisms, such as clay electro-chemical actions.

2015年11月3日 · Frost depth is an aspect of the majority of foundation design that I do, but thinking about it, I realize I'm not sure how the actual frost depth is determined. I see STP1358, "Remote Field Methods to Measure Frost Depth" (from the ASTM website) outlines several ways that frost depth can be calculated.

2008年8月7日 · the depth of frost penetration depends on a lot of things. One factor is the presence of water in the soil. As that material is at 32 degrees, it gives off heat of fusion. That heat release slows down the migration of that freezing front. As an extreme of this, take the depth of frost at a lake as compared to soil on land.

2002年12月4日 · For example snow covered ground will have musch less frost penetration than an area kept clear of snow. 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 temperature over the freezing period.

2023年8月7日 · I'm working on designing a blown film process and I'm having trouble calculating the frost line height. I've read that the frost line height is the distance from the die to the point at which the molten polymer starts to solidify, and it depends on a number of factors, including the melt temperature, the speed of cooling, the extrusion speed ...

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2015年2月18日 · I am designing piles for a ramp, roughly 5 kips factored load, without a geotech report. I am wondering if I should be using frost adfreeze for uplift calculations? I've seen values of 65 kPa to 100 kPa for adfreeze on the shaft perimeter in the depth of frost.

2007年8月17日 · In my area (Edmonton, Alberta) the frost penetration in an unheated area is about six to eight feet, depending on snow cover and natural insulation. For sheds and unattached garages, it is common practice to use a slab on grade with a thickened edge all around the perimeter. The edge thickening is completely within the active zone of frost.

2017年10月6日 · I inspected a house on the beach in NJ this past week, which was a 1-story dwelling with a basement, constructed fully of masonry block. When I went into the basement, there was a horizontal crack about 36" above the basement slab (and near outside grade level) which propagated through the...

2018年11月28日 · A thickened slab edge usually won’t solve a frost problem, if such problem exists, that needs a deeper edge beam, or wall and ftg. The edge of a slab is generally its weakest point since it has no added/adjacent support from surrounding slab on one edge.