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Southern Pine lumber has been used since Colonial times. Favorable growing conditions and wise forest management assure a continuous supply, and highly efficient manufacturing delivers quality Southern Pine products.
These tables compare design values for Southern Pine lumber and other major commercial species used in the U.S. The included tables are based on results of the North American In-Grade Testing Program completed in 1991.
As part of this effort, more than 70,000 full-size In-Grade pieces were tested to the breaking point. What evolved from the In-Grade Testing Program were new design values for Southern Pine and other North American species. One simple fact remained unchanged, as illustrated in these tables: Southern Pine is the strongest species for engineered and framing applications.
Today, Southern Pine is the preferred species of designers and specifiers, not only for its high strength and density, but also for its treatability. As in Colonial times, Southern Pine remains a preferred species in world export markets as well.
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These tables are for comparison purposes only, and do not provide complete design information. For more design details, see the National Design Specification® (NDS®) for Wood Construction published by the American Forest & Paper association, the Southern Pine Use Guide published by the Southern Pine Council™, and the following sources used for this publication:
Southern Pine
Southern Pine Council™: Maximum Spans for Southern Pine Joists & Rafters, 5/93.
Southern Pine Inspection Bureau: Standard Grading Rules for Southern Pine Lumber, 1994 Edition.
Douglas Fir-Larch, Hem-Fir and Spruce-Pine-Fir (South)
Western Wood Products Association: Western Lumber Size-Adjusted Values, 2/92, and Western Lumber Span Tables, 2/94.
Spruce-Pine-Fir
Canadian Wood Council: Canadian Dimension Lumber Data Book, 1/92, and The U.S. Span Book for Canadian Lumber, 1993.
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Click the links to view the species comparison for the sizes shown below:
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Disclaimer:
The Southern Pine Council™ does not grade or test lumber; and accordingly, does not assign design values to Southern Pine lumber. The design values contained on the following web pages are based on the SPIB Standard Grading Rules for Southern Pine Lumber, 1994 Edition, published by the Southern Pine Inspection Bureau, and modified as required by the 1997 National Design Specification® (NDS®) for Wood Construction published by the American Forest & Paper Association (AF&PA).
The primary purpose of this portion of the Southern Pine Council™'s web site is to provide a convenient reference for joist and rafter spans for specific grades of Southern Pine lumber. The maximum spans provided on the following web pages were determined on the same basis as those in the Span Tables for Joists and Rafters, 1993 Edition, published by AF&PA. Accordingly, the Southern Pine Council™, its principals and/or members, do not warrant in any way that the design values on which the span tables for Southern Pine lumber contained on the following web pages are based are correct, and specifically disclaim any liability for injury or damage resulting from the use of such span tables.
The conditions under which lumber is used in construction may vary widely, as does the quality of lumber and workmanship. Neither the Southern Pine Council™, nor its principals and/or members, have any knowledge of the construction project; and accordingly, cannot and do not, warrant the performance of the lumber used in completed structures.
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