Southern Research Station

Title: Structural lumber laminated from 1/4-inch rotary-peeled southern pine veneer

Author: Koch, Peter

Date: 1972

Source: Forest Products Journal, Vol. 23(7): 17-25

Description: By the lamination process evaluated, 60 percent of total log volume ended as kiln-dry, end-trimmed, sized, salable 2 by 4's - approximately 50 percent more than that acheived by conventional bandsawing of matched logs. Moreover, modulus of elasticity of the laminated 2 by 4's (adjusted to 12 percent moisture content) averaged 1,950,000 psi compared to 1,790,000 for the sawn 2 by 4's. Allowable fiber stress in edgewise bending was 2,660 psi for the laminated 2 by 4's, more than twice the value obtained (1,270 psi) for the sawn 2 by 4's. A manufacturing procedure for 6-ply lumber is described that calls for no major innovation in equipment. When the price per MBF of structural lumber is 50 percent greater than the price per M sq. ft. of 1/2-inch sheathing plywood, it should be more profitable to manufacture laminated lumber than plywood.

Keywords: 

View and Print this Publication (2.23 MB)

Publication Notes: 

• We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
• This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

 Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

Citation

Koch, Peter  1972.  Structural lumber laminated from 1/4-inch rotary-peeled southern pine veneer.   Forest Products Journal, Vol. 23(7): 17-25