A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

DBH (Diameter breast height)     The diameter of a tree at breast height (4.5 feet above ground) together with the estimated height of the usable logs in a tree is used to determine the volume of lumber likely to be yielded in a log depending on the log scale used (Scribner, Doyle or International Rule).     Back to top       Deciduous     Term applied to trees (commonly broadleaf) that usually shed their leaves annually. Also known commercially as 'hardwoods'. Back to top         Dominant trees     Trees with crowns extending above the general level of the canopy and receiving full light from above and partly from the side; taller than the average trees in the stand with crowns well developed. Also see co-dominant trees.     Back to top           Doyle Log Rule     In use since about 1870, this scaling method deducts a full four inches for slabs. It grossly underestimates the yield on small diameter logs (less than 14") . Every fourth Doyle load could be considered free in comparison to International rule, if the logs are within 14 to 20" inches in diameter and the prices per MBF for both scales were identical. The variance between Doyle rule and other rules is based on diameters, rather than lengths. (Also see Scribner and International Rule.)     Back to top       Dressed Lumber     Lumber that has been trimmed and planed at the sawmill. Back to top       Dry Lumber     As applied to softwoods, lumber sold as "dry" or "kiln dried" is at 19% or lower moisture content, as specified by the American Softwood Lumber Standards. Hardwoods are generally considered dry when at 10% or lower moisture content, although there is no definitive standard as with softwood species. Back to top       Dry Weight     The oven-dry weight, or simply dry weight, is the weight of wood after drying to a constant weight at a temperature slightly above the boiling point of water (215° to 220°F). Back to top       For Further Information Please contact our knowledgable staff