Headers & Beams: Machine-Graded Lumber
The Southern Forest Products Association provides allowable load tables for headers and beams to assist architects, engineers, contractors, and other professionals engaged in designing and building residential and commercial structures in selecting the proper size of header or beam for the job.
The header and beam supplemental tables provided below are supplemental load tables for machine-graded Southern Pine lumber.
| Table Number | Grade | Total Load Deflection Limit | Live Load Deflection Limit | Load Duration Factor, CD |
|---|---|---|---|---|
| 21 A | 24F-2.0E | 240 | 240 | 1.00 |
| 21 B | M-23 | 240 | 240 | 1.00 |
| Download Tables 21A & 21B | ||||
| 27 A | 24F-2.0E | 180 | 240 | 1.15 |
| 27 B | M-23 | 180 | 240 | 1.15 |
| Download Tables 27A & 27B | ||||
| 33 A | 24F-2.0E | 180 | 240 | 1.25 |
| 33 B | M-23 | 180 | 240 | 1.25 |
| Download Tables 33A & 33B | ||||
The Southern Forest Products Association does not develop design values for either lumber or glued laminated timber. Accordingly, SFPA does not warrant the design values on which these tables are based, and assumes no liability for damage caused or contributed to by the use of such design values.
In addition, SFPA and its members have no knowledge of the loads, spans, materials used, quality of workmanship, professional competence of the users, and other factors involved in specifying headers or beams for any given project; and accordingly, cannot, and do not, represent or warrant the performance in use of headers or beams incorporated into any particular construction project, and disclaim liability for injury or damage caused by the failure of a header or beam in use.
Download SFPA’s Southern Pine Headers and Beams: Supplemental Tables, which provides size selection tables for various beam spans and loading combinations for machine-graded Southern Pine dimension lumber and Southern Pine glued laminated timber.
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