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  2. Physical properties of soil - Wikipedia

    en.wikipedia.org/wiki/Physical_properties_of_soil

    There is no clear relationship between the size of soil mineral components and their mineralogical nature: sand and silt particles can be calcareous as well as siliceous, [18] while textural clay (0.002 mm (7.9 × 10 −5 in)) can be made of very fine quartz particles as well as of multi-layered secondary minerals. [19]

  3. Pore space in soil - Wikipedia

    en.wikipedia.org/wiki/Pore_space_in_soil

    The density of quartz is around 2.65 g/cm 3 but the dry bulk density of a soil can be less than half that value. Most soils have a dry bulk density between 1.0 and 1.6 g/cm 3 but organic soil and some porous clays may have a dry bulk density well below 1 g/cm 3.

  4. Permeability (porous media) - Wikipedia

    en.wikipedia.org/wiki/Permeability_(porous_media)

    These terms refer to the quality that the permeability value in question is an intensive property of the medium, not a spatial average of a heterogeneous block of material equation 2.28 [clarification needed] [further explanation needed]; and that it is a function of the material structure only (and not of the fluid).

  5. Tree volume measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_volume_measurement

    In contrast the volume of the Sag Branch Tuliptree (Liriodendron tulipifera), height 167.7 feet, dbh 7.08 feet, crown spread 101 feet) had a trunk volume of 2430 ft 3 (68.6 m 3) and a branch volume of 1560 ft 3 (44.17 m 3). [15] The volume of the branches on the tuliptree was only 64.2% that of the trunk. [15] The President Tree (Sequoiadendron ...

  6. List of obsolete units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_obsolete_units_of...

    Yojana – a Vedic measure of distance used in ancient India. Its value was about 10 km (6.2 mi), although the exact value is disputed among scholars (between 8 and 13 km or 5 and 8 mi) Its value was about 10 km (6.2 mi), although the exact value is disputed among scholars (between 8 and 13 km or 5 and 8 mi)

  7. Atterberg limits - Wikipedia

    en.wikipedia.org/wiki/Atterberg_limits

    The moisture content at which it takes 25 drops of the cup to cause the groove to close over a distance of 12.7 millimetres (0.50 in) is defined as the liquid limit. The test is normally run at several moisture contents, and the moisture content which requires 25 blows to close the groove is interpolated from the test results.

  8. Daantjie Badenhorst - Wikipedia

    en.wikipedia.org/wiki/Daantjie_Badenhorst

    Daniel Streicher Badenhorst (born 6 December 1967), better known as Daantjie Badenhorst and nicknamed Daantjie Dinamiet [1] (Daantjie Dynamite), is a South African quiz show champion, journalist and author.

  9. Shrink–swell capacity - Wikipedia

    en.wikipedia.org/wiki/Shrink–swell_capacity

    [3] This property is measured using coefficient of linear extensibility (COLE) values. If a soil has a COLE value greater than 0.06, then it can cause structural damage. [2] A COLE value of 0.06 means that 100 inches of soil will expand by 6 inches when wet. [2] Soils with this shrink-swell capacity fall under the soil order of Vertisols. [6]