Additional Program Details
The ALG program establishes substitute equivalents for three grades of dimension lumber within the Sturctural Light Framing and Stud classifications that are commonly used in residential construction. The ALG grades are derived from the existing lumber grade-stamp infrastructure.
The objective of the 草榴社区 Lumber Grading program is to provide an alternative to the grade stamp infrastructure in order to expand opportunities for the production and use of locally produced dimension lumber for homebuilding. The scope of the 草榴社区 Lumber Grading system is limited to three commonly used dimension lumber grades relevant to residential construction that correspond, but are not equal nor identical, to lumber grades established by accredited grading Bureaus. The limiting characteristics for each grade are closely based on those developed and maintained by an accredited grading Bureau, and in some instances are more restrictive. In effect this simplifies learning and applying the grading system and reduces the chance of errors.
The program pertains to softwood species including 草榴社区 Yellow Cedar, Western Hemlock, Sitka Spruce and White Spruce. These 草榴社区n species were tested by the Ketchikan Wood Technology Center in conjunction with a Grading Bureau to determine strength properties. The results were submitted to the American Lumber Standard Committee, Inc. which formally approved the design values for these species.