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			rule of thumb for the lumber needed for any given span is height times height times width. (nominal) 2x4 = 2x4x4 = 32" span (3') 2x6 = 2x6x6 = 72" span (6') 2x8 = 2x8x8 = 128" span (10' 8") 2x10 = 2x10x10 = 200" span (16' 8") It is just a rule of thumb and at the extremes it is faulty but from 2x6 to 2x12 it is close. ________ Honda Vfr1200F Last edited by PaulS; 04-03-2011 at 03:43 PM. | 
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