The Evolution of Structural Composite Lumber Aug, 2007 By Renee Strand, P.E. In Articles, Product Watch This article is currently only available in PDF format, please click the link to the top right. About the author ⁄ Renee Strand, P.E.Renee Strand, P.E., is a senior engineer for iLevel by Weyerhaeuser. She can be reached at renee.strand@weyerhaeuser.com. Prev The Structural Engineer Expert and the Code Next Stephen P. Timoshenko