Structural Lumber Information
Structural Dimension Lumber
For more information on specific species and grades of lumber contact the following organizations:
California Redwood Association
(CRA)
415-382-0662
Canadian Wood Council
(CWC)
613-747-5544
Northeastern Lumber Manufacturers Association
207-829-6901
Southern Forest Products Association (SFPA)
504-443-4464
Southern Pine Inspection Bureau (SPIB)
904-434-2611
West Coast Lumber Inspection Bureau (WCLIB)
503-639-0651
Western Wood Products Association (WWPA)
503-224-3930
Grading and Grade Stamp information...
Frequently Asked Questions
Section: Lumber
- What is the difference between SPF and SPF south? DF-L and DF-L(N)? HF and HF(N)?
- Where can I find information for nominal 1", 1-1/4", and 1-1/2" stress-rated boards?
- Where can I find design values for cypress for structural use?
- Where do I find decking design values?
- Where can I find design values for lumber?
- Can finger jointed lumber (also known as end-jointed and edge-glued) be substituted for sawn lumber?
- Where can I find information on Lumber Grade Rules and Grade Stamps?
- Where can I find information about structural lumber grades vs. appearance characteristics?
- Where can I find design values, span tables, allowable load tables, and other information for structural softwood and hardwood lumber?
- What is the difference between plastic lumber and wood-plastic composites?
- What is the difference between southern pine and southern pine-misiones Argentina?
- Where can I find design values for tropical hardwoods, imported species, and other species not found in the NDS Supplement?
- Where can I find information on tongue and groove roof decking?
- How are the floor joist span tables calculated and used?
- Where can I get span tables and span table information for lumber?
Where can I get decking span tables?