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The Washington State Building Code allows floor systems to have a deflection of L/360. This means 1'' of deflection in 360'' or 30'. TCT feels these floors are too soft and builds all their floors to the tougher standard of L/480. 33% less deflection - you can really feel the difference.

To read this table:

  • Look at the ''Truss Spacing'' -the center-to-center distance between each floor truss
  • Look up the depth of the flooring system (12''-24'')
  • Read the spans possible using 2 different grades of lumber


Contact TCT at 1-800-523-3847 to discuss how this table can be turned into a solution for you!