Frequently Asked Questions
Where can I find design values for lumber and glued laminated timber?
Shear parallel to grain (Fv) values along with compression perpendicular to grain (Fc⊥), bending (Fb), tension parallel to grain (Ft), compression parallel to grain (Fc), and modulus of elasticity (E) values are located in the NDS supplement, Design Values for Wood Construction.
Wood Products
- 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?
Engineered Wood Products
- Where can I find information on fiber reinforced plastic (FRP) wood composites?
- Where can I find design values, span tables, allowable load tables and other information for structural glued-laminated timber?
- Where can I find information on glulam adhesive manufacturers?
- What are I-joists and where can I find them?
- Where can I find information on structural composite lumber (SCL)?
Panel Products