Posted 3/26/2024 21:16 (#10681878 - in reply to #10681644) Subject: RE: How heavy of rafters?
western iowa,by Denison
on 2ft spacing a 2x12 will span twice its depth-if you go to a 2x10 it will hold at 2ft spacing not at 4ft spacing-you need a 2x24 to span 20ft at 4ft spacing