The distance your joists can safely cantilever or overhang a drop beam is determined by the size of the joists, the wood type and grade of the lumber and the spacing between joists. Many building departments limit joist cantilevers to 24' maximum. You must use at least five framing nails to attach the rim joist to the ends of your joists.
The American Wood Council states that cantilevers are limited to 1/4 the span of the joists.
| Joist Spacing (o.c.) | 12' | 16' | 24' | |
|---|---|---|---|---|
| Species | Size | Allowable Overhang | ||
| Southern Pine | 2x6 | 1'-0' | 1'-1' | 1'-4' |
| 2x8 | 1'-10' | 2'-0' | 2'-4' | |
| 2x10 | 3'-1' | 3'-5' | 2'-10' | |
| 2x12 | 4'-6' | 4'-2' | 3'-4' | |
Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir | 2x6 | 11' | 1'-0' | 1'-2' |
| 2x8 | 1'-8' | 1'-10' | 2'-2' | |
| 2x10 | 2'-10' | 3'-2' | 2'-9' | |
| 2x12 | 4'-4' | 3'-11' | 3'-3' | |
Redwood, Western Cedars, Poderosa Pine, Red Pine | 2x6 | 9' | 10' | 11' |
| 2x8 | 1'-5' | 1'-7' | 1'-9' | |
| 2x10 | 2'-5' | 2'-7' | 2'-8' | |
| 2x12 | 3'-7' | 3'-9' | 3'-1' |
Deck Set 2 0 133 Cm
Select Deck Select Mower All Mowers Show All Zero-Turn Mowers Show All Lawn Tractors - 100 Series - S240 Sport - X300 Select Series - X500 Select Series - X700 Signature Series Edge™. 4 PRESCRIPTIVE RESIDENTIAL WOOD DECK CONSTRUCTION GUIDE American Wood Council Table 2. Maximum Joist Spans and Overhangs.1 Species Size Joist Spacing (o.c.). Deck Player Price; 5 - 0 WUB WUB WUB: parkozaPL: 27 tix $ 114 - 5 - 0 Boros Winota Boros Winota Boros Winota: ruda: 205 tix $ 212 - 5 - 0 Dimir Control Dimir Control Dimir Control: PhilIvey: 106 tix $ 182 - 5 - 0 BR BR BR: KelMasterP: 216 tix $ 217 - 5 - 0 Dimir Rogues Dimir Rogues Dimir Rogues: PETR4: 187 tix $ 262 - 5 - 0 Mono-Red Aggro.
Deck Set 2 0 133 Mm
Deck Set 2 0 133 Mm
Deck Set 2 0 133 Inches
