LEESBURG, VA – The American Wood Council (AWC) has revised several of its standards and design tools in response to upcoming changes to Southern Pine design values. The American Lumber Standard Committee (ALSC) Board of Review approved changes to design values for 2"- 4" thick, 2"- 4" wide, Southern Pine #2 Dense and 2x4 Mixed Southern Pine #2, and all lower grades (i.e. #3, Stud, Construction, Standard, and Utility), with a recommended effective date of June 1, 2012 to allow for their orderly implementation. The changes to AWC standards and design tools ensure they remain consistent with the new design values. Visit www.spib.org and www.southernpine.com for more details.