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Madison, WI 53726-2398
Phone: (608) 231-9200
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Title: Yellow Pine Small Clear Flexural Properties across Five Decades

Source: Forest Products Journal

Author(s)França, Frederico José Nistal; Shmulsky, Rubin ; Ratcliff, J. Tedrick; Farber, Benjamin ; Senalik, C. Adam; Ross, Robert J.; Seale, R. Daniel.

Publication Year: 2021  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4714-1B

Abstract: When discussing structural southern yellow pine lumber, questions frequently are asked regarding changes over time. This is a significant area of discussion given that structural lumber properties (i.e., design values) were changed around 2012. Climate change, forest management, genetics, processing, and others are listed among the many possible contributing factors. Of interest are these questions: (1) Are changes in bending properties permanent at some fundamental level, or are they somewhat dynamic and responsive to controllable factors? (2) To what degree have the basic southern pine wood mechanical properties changed over time? Related thereto, this research examines the bending properties of small clear pine specimens from three samples. Sample 1 was pulled from a production-weighted sample of in-grade parent lumber. Sample 2 was pulled from commercially available molding and millwork. Sample 3 was pulled from data from the U.S. Department of Agriculture Forestry Products Laboratory from the early to mid-1960s. The flexural properties of small clear specimens among the three samples showed some statistically significant differences. However, there was no clear trend regarding these differences. These results appear to support the notion that while the variability of pine’s flexural properties is significant and that while many changes in forest management and production have occurred over the past five decades, the basic density and bending strength of clear southern pine appear generally stable over time.

Keywords: yellow pine; historic; properties; flexural

Publication Review Process: Formally Refereed

File size: 315 kb(s)

Date posted: 09/02/2021

This publication is also viewable on Treesearch:  view
RITS Product ID: 10232
Current FPL Scientists associated with this product (listed alphabetically)
Ross, Robert J.
Supervisory Research Gen. Engineer
Senalik, Christopher
Research General Engineer

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