Southern Pine Lumber Design Values (by NAHB, 12-Jun-2012 10:52 AM)
Information and Resources on Proposed CHANGES to Southern Pine Lumber Design Values
On October 6, 2011, the Southern Pine Inspection Bureau (SPIB) announced it was submitting a proposal to the American Lumber Standard Committee’s (ALSC) Board of Review to lower the design properties for all grades and sizes of visually graded Southern Pine by 25%-30%. SPIB also indicated that it intended, upon approval by the ALSC Board of Review, to immediately implement and publish the new design values. Gary Ehrlich, NAHB’s Program Manager - Structural Codes & Standards, represents NAHB on the ALSC. NAHB has been working with members of its Building Systems Councils, the Structural Building Components Association (SBCA) and other industry representatives on this issue.
To read the full article from the National Association of Home Builders CLICK HERE.
The Southern Pine Inspection Bureau (SPIB) issued new design values effective June 1, 2012 in Supplement No.9 to the 2002 Standard Grading Rules for Southern Pine Lumber . The only design values that changed apply to visually graded Southern Pine and Mixed Southern Pine sized 2" to 4" wide and 2" to 4" thick (2x2s through 4x4s) in No.2 and lower grades (No.2, No.3, Stud, Construction, Standard and Utility). This also includes new design values for No.2 Dense and No.2 NonDense Southern Pine.
Design values for all other grades and sizes of visually graded Southern Pine remain the same, pending results of testing scheduled for completion later this year.
CLICK HERE to read more about Design Values from the Southern Pine Inspection Bureau.
CLICK HERE to read FREQUENTLY ASKED QUESTIONS from the National Association of Home Builders.