The following is provided to assist architects, engineers, and builders in specifying and designing with Northeastern lumber products. While the information was developed with the latest available information, please consult with a design professional for your specific building project needs.
Base Design Values (All Northeastern Species)
Softwood Lumber – 2″ to 4″ thick by 2″ and thicker
Hardwood Lumber – 2″ to 4″ thick by 2″ and thicker
Beams and Stringers – All species, 5″ & thicker and width 2″ greater than thickness
Posts and Timbers – All species, 5″ by 5″ and larger with width not more than 2″ greater than thickness
Size Adjusted Design Values by Species:
Spruce-Pine-Fir South (SPFs)
Span Tables – Spruce Pine Fir South (SPFs)
