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  2. Frost line - Wikipedia

    en.wikipedia.org/wiki/Frost_line

    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. For example, snow cover and asphalt insulate the ground and homes can heat the ground (see also heat island). The line varies by latitude, it is deeper closer to the poles.

  3. Frost damage (construction) - Wikipedia

    en.wikipedia.org/wiki/Frost_damage_(construction)

    Frost damage can occur as cracks, stone splinters and swelling of the material. When water freezes, the volume of water increases by 9 %. [ citation needed ] When the volumetric moisture content exceeds 91 %, then the volume increase of water in the pores of the material caused by freezing cannot be absorbed by sufficient empty pores.

  4. Frost line (polymers) - Wikipedia

    en.wikipedia.org/wiki/Frost_line_(polymers)

    It is sometimes called freeze line, [3] while other disstinguish the concepts of frost/freeze line. [2] The distance from the die is called the height of the frost line. It depends on various factors, including the melt temperature, the speed of cooling, the extrusion speed, and the diameter of the bubble.

  5. Cryoseism - Wikipedia

    en.wikipedia.org/wiki/Cryoseism

    Most frost quakes are associated with minor snow cover on the ground without a significant amount of snow to insulate the ground (i.e., less than 6 inches (15 cm)) A rapid temperature drop from approximately freezing to near or below −18 °C (0 °F), which ordinarily occurred on a timescale of 16 to 48 hours.

  6. Frost line (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Frost_line_(disambiguation)

    In geology, the frost line is the level down to which the soil will normally freeze each winter. By an analogy, the term is introduced in other areas. Frost line (astrophysics), a particular distance in the solar nebula from the central protosun where it is cool enough for hydrogen compounds such as water, ammonia, and methane to condense into solid ice grains.

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  8. List of roof shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_roof_shapes

    Cross hipped: The result of joining two or more hip roof sections together, forming a T or L shape for the simplest forms, or any number of more complex shapes. Satari: A Swedish variant on the monitor roof; a double hip roof with a short vertical wall usually with small windows, popular from the 17th century on formal buildings.

  9. Category:Ground freezing - Wikipedia

    en.wikipedia.org/wiki/Category:Ground_freezing

    The term 'ground freezing' is used: a. when a section of ground is reduced in temperature either to stabilise the structure e.g. when underground water flow prevents mining or tunnel construction.