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  2. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    square foot equivalent direct radiation: sq ft EDR ≡ 240 BTU IT /h ≈ 70.337 057 W: ton of air conditioning: ≡ 2000 lb of ice melted / 24 h ≈ 3504 W: ton of refrigeration (imperial) ≡ 2240 lb × ice IT / 24 h: ice IT = 144 °F × 2326 J/kg⋅°F ≈ 3.938 875 × 10 3 W: ton of refrigeration (IT) ≡ 2000 lb × ice IT / 24 h: ice IT ...

  3. Time–distance diagram - Wikipedia

    en.wikipedia.org/wiki/Time–distance_diagram

    A time–distance diagram is a chart with two axes: one for time, the other for location. The units on either axis depend on the type of project: time can be expressed in minutes (for overnight construction of railroad modification projects such as the installation of switches) or years (for large construction projects); the location can be (kilo)meters, or other distinct units (such as ...

  4. Cubic yard - Wikipedia

    en.wikipedia.org/wiki/Cubic_yard

    27 ft 3 A cubic yard (symbol yd 3 ) [ 1 ] is an Imperial / U.S. customary (non- SI non- metric ) unit of volume , used in Canada and the United States. It is defined as the volume of a cube with sides of 1 yard (3 feet , 36 inches , 0.9144 meters ) in length .

  5. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    A unit of time is any particular time interval, used as a standard way of measuring or expressing duration. The base unit of time in the International System of Units (SI), and by extension most of the Western world , is the second , defined as about 9 billion oscillations of the caesium atom.

  6. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    historical definitions of the units and their derivatives used in old measurements; e.g., international foot vs. US survey foot. For some purposes, conversions from one system of units to another are needed to be exact, without increasing or decreasing the precision of the expressed quantity.

  7. Square foot - Wikipedia

    en.wikipedia.org/wiki/Square_foot

    Comparison of 1 square foot with some Imperial and metric units of area. The square foot (pl. square feet; abbreviated sq ft, sf, or ft 2; also denoted by ' 2 and ⏍) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States, Canada, the United Kingdom, Bangladesh, India, Nepal, Pakistan, Ghana, Liberia, Malaysia, Myanmar, Singapore and Hong Kong.

  8. Square yard - Wikipedia

    en.wikipedia.org/wiki/Square_yard

    Comparison of 1 square yard with some Imperial and metric units of area The square yard ( Northern India : gaj , Pakistan : gaz ) is an imperial unit and U.S. customary unit of area . It is in widespread use in most of the English -speaking world, particularly the United States, United Kingdom, Canada, Pakistan and India.

  9. Miner's inch - Wikipedia

    en.wikipedia.org/wiki/Miner's_inch

    The miner's inch is a unit of flow in terms of volume per unit time, usually in relation to the flow of water. The definition of a miner's inch varies by location. In hydraulic mining and some forms of placer mining, as well as ore dressing, a large and regular supply of water is needed.