While cutting the rafters use a rafter table, which comes in an instruction manual with the rafter square, to determine the length of the rafter. For a 5/12 rafter, that will be 13, or 13 inches of rafter for every foot of run; with a 12-foot run, that is 13 feet. Mark that sp...
The rafter table on a typical framing square gives rafter length for roof slopes with a rise anywhere between 2" to 18" per foot of run. How to find Roof Slope & Rafter Length on a framing square How would we use our framing square to measure or to calculate the slope and rafter leng...