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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 .
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 ...
This volume measurement was developed to estimate what volume of a round log would be usable timber after processing, in effect attempting to ‘square’ the log and allow for waste. The hoppus ton (HT) was also a traditionally used unit of volume in British forestry. One hoppus ton is equal to 50 hoppus feet or 1.8027 cubic meters.
A log scaling method that has been popular since the adaptation of trucks to haul logs has been the 'ramp scale'. In this approach, the log truck is driven beside a scale ramp which is simply an elevated platform, and from there the log scaler climbs around on the truck and on the load and measures and grades the logs.
In 1950, the United States produced 38 billion board feet of lumber, and that number remained fairly constant throughout the decades moving forward, with the national production at 32.9 billion board feet in 1960 and 34.7 billion board feet in 1970. [61]
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The volume of a face cord or a rick [29] depends on the length of the logs that are stacked in a 4 by 8 ft (1.22 by 2.44 m) pile. When 16 in (41 cm) logs are used, the volume is 42 + 2 ⁄ 3 cubic feet (1.21 m 3) which is one third of a full or bush cord stack of wood. [28]