lumber grade

lumber grade

A classification used by the lumber industry for pieces of lumber: the categories are standard, structural, and utility.
References in periodicals archive ?
Grading of Northern Hardwood Logs (Benson and Wollin 1941) became the first attempt by the USDAFS to develop a standardized system for grading hardwood logs, based on the resulting lumber grade yields.
Think clear lengths instead of lumber grade. The better a company can match the lumber they purchase with the dimensions of clear lengths they need to produce their product, the lower their production costs become.
They slide and stack the lumber in piles, sorting them according to the lumber grade marked on each piece.
With the work of Yaussy and his coauthors during the late 1980s in developing statistical models for predicting the lumber grade yields from Hanks et al.
(See footnote 4.) Lumber grade, the marker station's throughput rate and the complexity of the cutting bill affect accuracy.
A better approach is for the rough mill foreman to smooth flow by adjusting cutting bills, lumber grade brought to the mill, lumber length and width of lumber brought to the mill.
To supplement the lumber grade information in describing the quality of the koa lumber recovered, defect counts and area summaries were compiled for different defect types by lumber grade and sample site.
Consideration should be given to whether lumber grade, species or size changes might be coming.
Quality Indexes for red oak (Quercus rubra) and white oak (Quercus alba) logs were established using multivariate regression models developed by the US Department of Agriculture (USDA) Forest Service that predicted green 4/4 lumber grade yields from hardwood sawlogs.
Rough mill managers may be able to control the incoming lumber grade mix, which in turn will impact yield and lumber usage and consequently the lumber cost.
The unit shows the sawyer how each board should be cut for a given cutting bill and suggests the best lumber grade mix to use.
First, we compiled the volume of each lumber grade for each size and defect class of trees processed in the sawmill.