How far can I span a 2×10 Rafter?

How far can I span a 2×10 Rafter? In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2×8 up to 12 feet; 2×10 to 15 feet and 2×12 to 18 feet. Can a 2×10 span 20 feet? 2×10 floor joists can span up to … Continue reading How far can I span a 2×10 Rafter?