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  2. Pole building framing - Wikipedia

    en.wikipedia.org/wiki/Pole_building_framing

    Pole building design was pioneered in the 1930s in the United States originally using utility poles for horse barns and agricultural buildings. The depressed value of agricultural products in the 1920s, and 1930s and the emergence of large, corporate farming in the 1930s, created a demand for larger, cheaper agricultural buildings. [2]

  3. Molar volume - Wikipedia

    en.wikipedia.org/wiki/Molar_volume

    The ideal gas equation can be rearranged to give an expression for the molar volume of an ideal gas: = = Hence, for a given temperature and pressure, the molar volume is the same for all ideal gases and is based on the gas constant: R = 8.314 462 618 153 24 m 3 ⋅Pa⋅K −1 ⋅mol −1, or about 8.205 736 608 095 96 × 10 −5 m 3 ⋅atm⋅K ...

  4. 2,2,4-Trimethylpentane - Wikipedia

    en.wikipedia.org/wiki/2,2,4-Trimethylpentane

    2,2,4-Trimethylpentane, also known as isooctane or iso-octane, is an organic compound with the formula (CH 3) 3 CCH 2 CH(CH 3) 2. It is one of several isomers of octane (C 8 H 18 ). This particular isomer is the standard 100 point on the octane rating scale (the zero point is n -heptane ).

  5. Barn (unit) - Wikipedia

    en.wikipedia.org/wiki/Barn_(unit)

    A barn (symbol: b) is a metric unit of area equal to 10 −28 m 2 (100 fm 2). This is equivalent to a square that is 10 −14 m (10 fm ) each side, or a circle of diameter approximately 1.128 × 10 −14 m (11.28 fm).

  6. Mass fraction (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Mass_fraction_(chemistry)

    Mass fraction can also be expressed, with a denominator of 100, as percentage by mass (in commercial contexts often called percentage by weight, abbreviated wt.% or % w/w; see mass versus weight). It is one way of expressing the composition of a mixture in a dimensionless size ; mole fraction (percentage by moles , mol%) and volume fraction ...

  7. Housebarn - Wikipedia

    en.wikipedia.org/wiki/Housebarn

    A housebarn (also house-barn or house barn) is a building that is a combination of a house and a barn under the same roof. [ 1 ] [ 2 ] Most types of housebarn also have room for livestock quarters. If the living quarters are only combined with a byre, whereas the cereals are stored outside the main building, the house is called a byre-dwelling .

  8. Standard temperature and pressure - Wikipedia

    en.wikipedia.org/wiki/Standard_temperature_and...

    For example, IUPAC has, since 1982, defined standard reference conditions as being 0 °C and 100 kPa (1 bar), in contrast to its old standard of 0 °C and 101.325 kPa (1 atm). [2] The new value is the mean atmospheric pressure at an altitude of about 112 metres, which is closer to the worldwide median altitude of human habitation (194 m).

  9. Barnwood Builders - Wikipedia

    en.wikipedia.org/wiki/Barnwood_Builders

    In the final two episodes of Season 7, the Barnwood Builders take on their hardest build yet. They construct a giant timber frame house for Project Healing Waters, a place where wounded veterans recover from PTSD and other battle injuries. Season 8. Episode 4, Mark works with a client who appeared on a previous episode to build a new boneyard ...