Frost line in ontario

The frost line —also known as frost depth or freezing depth—is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources. Figure 2: Freezing Index Map for Southern Ontario.

Calculating Insulation Needs to Fight Frost Heave by Comparing Freezing Index and Frost Depth . Figure 3: Freezing Index Map for Northern Ontario.

The contractor refused to adjust them.

Should we worry enough and is there any bylaw in Ontario or Markham area to regulate the minimum depth of the fence post to post the frost line ?

In this article, we will cover the Frost Line Depth in North America. Frost Depth or Freezing Depth is the maximum depth within the soil, where groundwater is expected to freeze. This article discusses the causes of frost heave, typical damage resulting from heaved ground and ways frost heaving can be avoided. In southern Ontario the depth of ground freezing varies from 1. In addition, Ontario experience shows that repeated freeze-thaw cycles at the beginning of the cold season will produce large heaves. New Brunswick, on the other han reports that most of the heaving . It should support the load without sinking and that requires footings.

It should resist frost upheave both by having the footings below the frost line and in clay soils that are susceptible to adfreezing, minimizing ice lens adhesion. An a somewhat new factor in . Most water services are deeply buried for protection against frost. Housing Corporation, 7Montreal Roa Ottawa, Ontario K1A OP7. Foundation control joint grade line protect caulking from backfill with asphalt strip. Control joints, to be effective, must reduce the wall thickness by . Footings must bear below the frost line - a potential problem for walkout.

Ambient Temperatures - Below Ground. The frost depth can be fairly accurately calculated as it is usually directly related to the number of freezing. The following table which is provide courtesy of the Ontario Ministry of the Environment, can be used as an approximate guide to determine soil temperature. Never burn treated wood scraps as the fumes are noxious.

Always put footings below the frost line or follow the guidelines of the area where the deck will be constructed. This is even more true if the post extends to below the frost line , since expansion pressure will then be almost entirely lateral. If the small end of the post is put in the groun the expansion of freezing ground will tend to . The relationship between cumulative freezing degree days and frost depth was found to .