Where do I find decking design values?

• The National Design Specification® (NDS®) Supplement tables list design values for 2x and larger decking.
  
  The American Lumber Standards Committee (ALSC) provides a Policy for Evaluation of Recommended Spans for Span Rated Decking Products. Here's more information on their website: http://www.alsc.org/untreated_spanrated_mod.htm
  
  You will need to contact the specific grading agencies to obtain their span ratings for various species. A list of those agencies is on the ALSC website as well.
  
  Lateral design values for lumber diaphragms and shear walls are available in Special Design Provisions for Wind and Seismic .
  
  Also see the Span Tables FAQ for span information on decking.
  Also see Tongue and Groove Roof Decking - WCD #2.
  Also see Plank-And-Beam Framing for Residential Buildings - WCD #4.