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  2. Tree girth measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_girth_measurement

    The Árbol del Tule in Santa Maria del Tule, Oaxaca, Mexico (Taxodium mucronatum) has a girth of 119.8 feet (36.5 m) and a height of 116.1 feet (35.4 m), with a 144-foot (43.9 m) wide crown as measured by Dr. Robert Van Pelt in 2005. The Tule tree therefore has a diameter of 38.1 feet (11.61 m) as extrapolated from the tape wrap values.

  3. Standard (timber unit) - Wikipedia

    en.wikipedia.org/wiki/Standard_(timber_unit)

    The timber would be typically called battens (7 inches wide), deals (above 7, usually 9 inches wide) and planks (11 inches wide); boards were under 2 inches thick. [ 3 ] [ 4 ] The standard hundred of the Russian capital of Saint Petersburg was 120 boards which were 12 feet long, 1 1 ⁄ 2 inches thick and 11 inches wide – a volume of 165 ...

  4. Girard form class - Wikipedia

    en.wikipedia.org/wiki/Girard_form_class

    Girard form class is a form quotient calculated as the ratio of diameter inside bark at the top of the first 16 foot log to the diameter outside bark at breast height ().Its purpose is to estimate board-foot volume of whole trees from measurement of DBH, estimation of the number of logs, and estimation of the taper of the first log, based on the general relationships identified between the ...

  5. Regular open set - Wikipedia

    en.wikipedia.org/wiki/Regular_open_set

    The interior of a closed subset of is a regular open subset of and likewise, the closure of an open subset of is a regular closed subset of . [2] The intersection (but not necessarily the union) of two regular open sets is a regular open set. Similarly, the union (but not necessarily the intersection) of two regular closed sets is a regular ...

  6. Tree volume measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_volume_measurement

    The President Tree (Sequoiadendron giganteum) [3] was measured in 2012 to have a trunk volume of 54,000 cubic feet (1,500 m 3) of wood and a branch volume of 9,000 cubic feet (250 m 3) of wood in the branches. In this giant tree the branch volume was only 16.7% that of the trunk volume.

  7. Board foot - Wikipedia

    en.wikipedia.org/wiki/Board_foot

    The board foot or board-foot is a unit of measurement for the volume of lumber in the United States and Canada [1]. It equals the volume of a board that is one foot (30.5 cm) in length, one foot in width, and one inch (2.54 cm) in thickness, or exactly 2.359 737 216 liters .

  8. Natural density - Wikipedia

    en.wikipedia.org/wiki/Natural_density

    A subset A of positive integers has natural density α if the proportion of elements of A among all natural numbers from 1 to n converges to α as n tends to infinity.. More explicitly, if one defines for any natural number n the counting function a(n) as the number of elements of A less than or equal to n, then the natural density of A being α exactly means that [1]

  9. Cord (unit) - Wikipedia

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

    A cord is the amount of wood that, when "racked and well stowed" (arranged so pieces are aligned, parallel, touching, and compact), occupies a volume of 128 cubic feet (3.62 m 3). [1] This corresponds to a well-stacked woodpile 4 feet (122 cm) high, 8 feet (244 cm) wide, and 4 feet (122 cm) deep; or any other arrangement of linear measurements ...