Official new values for the strength and stiffness of Southern Pine have now taken effect, and they mean shorter spans for the wood species that accounts for most treated wood in the marketplace. Taking the new values for treated SYP into account, the American Wood Council has updated its "Prescriptive Residential Wood Deck Construction Guide" with new span tables and fastener requirements.

If you want to learn more about how to use the manual, you could attend AWC's August 14 webinar, taught by experts Michelle Kam-Biron and Buddy Showalter. Sign-up is free at the AWC's Events page.