Deck Joist Span Table

Tabular reference for maximum deck joist spans and overhangs. Same data as the chart, written for people who search “table” instead of “chart.” Jump to the deck joist span calculator when you want a single answer.

Deck joist span chart / table (AWC DCA 6)

Full Table 2 values: three species groups × four sizes × three spacings, with span and overhang.

Source: AWC DCA 6-15 PDF, Table 2.

About this table

Every cell is copied from AWC’s Prescriptive Residential Wood Deck Construction Guide (DCA 6-15), Table 2. We store values as feet-and-inches strings so they stay identical to the PDF. Related: deck joist span chart, assumptions.

Disclaimer

This site is a reference tool. Span and overhang values are transcribed from the American Wood Council DCA 6-15 Table 2 (based on the 2015 IRC). It is not engineering design. Always follow your local building code and a licensed design professional. These tables do not apply to snow loads above 40 psf, hot tubs, roofed decks, or other concentrated loads.