Skip to Main Content
Bending strength and stiffness of loblolly pine lumber from intensively managed stands located on the Georgia Lower Coastal PlainAuthor(s): Mark Alexander Butler; Joseph Dahlen; Richard F. Daniels; Thomas L. Eberhardt; Finto Antony
Source: European Journal of Wood and Wood Products
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
View PDF (371.0 KB)
DescriptionLoblolly pine is increasingly grown on intensively managed plantation forests that yield excellent growth; however, lumber cut from these trees often contains a large percentage of juvenile wood which negatively impacts strength and stiffness. Because of changing forest management and mill practices the design values for visually graded southern pine were updated in 2013 to more accurately account for the material properties available in commerce. This study was undertaken to assess the bending strength and stiffness of loblolly pine lumber from intensively managed stands located on the Georgia Lower Coastal Plain. Eight hundred and forty-one pieces of lumber sawn from 93 trees age 24–33 years were tested in four-point bending according to ASTM International standards. The No. 1 grade MOE15 (11.9 GPa) was greater than the current (11.0 GPa) design value and comparable to the previous (11.7 GPa) design value. The No. 2 grade MOE15 (10.6 GPa) was greater than the current (9.7 GPa) design value but slightly less than the previous (11.0 GPa) design values. The No. 3 grade MOE15 (9.3 GPa) was etween the current (9.0 GPa) design value and the previous (9.7 GPa) design value. Altogether, these results point to the MOE15 mean values being reasonably comparable to the previous design values and currently meeting or exceeding the current design values for visually graded southern pine lumber.
- 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.
CitationButler, Mark Alexander; Dahlen, Joseph; Daniels, Richard F.; Eberhardt, Thomas L.; Antony, Finto. 2016. Bending strength and stiffness of loblolly pine lumber from intensively managed stands located on the Georgia Lower Coastal Plain. European Journal of Wood and Wood Products. 74(1): 91-100.
Keywordslumber, design values, modulus of elasticity
- Strength and Stiffness Properties of Sweetgum and Yellow-poplar Structural Lumber
- Potential Utilization of Sweetgum and Yellow-Poplar for Structural Lumber
- Comparison of nondestructive testing methods for evaluating No. 2 Southern Pine lumber: Part B, modulus of rupture
XML: View XML