ABC Wood Treating Corporation, Inc. Anytown, refer to Maximum Spans for Southern pressure treated Southern Pine floor/deck joists,
Sample Calculations for Using Joist Span and Beam Size With a 12’ deck span, depending on wood used.
7 canadian wood council residential prescriptive exterior wood deck span guide table 2a deck joist spans not incised m maximum allowable
The 2015 IRC includes a new table R507.6 Deck Beam Spans Lengths. The table makes it easier for deck builders to accurately size deck beams and for inspectors to check decks for adequate framing. Sizing deck beams got a lot easier when the 2015 IRC came out. Deck builders can now refer to Section