Douglas Fir Span Tables
Explore our updated Douglas Fir span tables for 2024, providing essential data on maximum spans for this durable softwood. These tables are practical for building decks, joists, and rafters, and are adjusted for different regions.
Species Included:
- Douglas Fir
- Douglas Fir (South)
- Douglas Fir (North)
These tables will help you meet building codes and enhance material utilization, making your projects both safer and more cost-effective.
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Douglas Fir Joist and rafters span table based on Dead Load: 10 psf Live Load: 40 psf and deflection limit of L/360
Max span calculations have been based on this RedX Apps Span Calculator.
| Douglas Fir Joist and Rafters Max Span Table | |||||
|---|---|---|---|---|---|
| Lumber Grade | Nominal Size | Spacing O.C. | |||
| 12 in | 16 in | 19.2 in | 24 in | ||
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Douglas Fir (south) Joist and rafters span table based on Dead Load: 10 psf Live Load: 40 psf and deflection limit of L/360
Max span calculations have been based on this RedX Apps Span Calculator.
| Douglas Fir (south) Joist and Rafters Max Span Table | |||||
|---|---|---|---|---|---|
| Lumber Grade | Nominal Size | Spacing O.C. | |||
| 12 in | 16 in | 19.2 in | 24 in | ||
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Douglas Fir (north) Joist and rafters span table based on Dead Load: 10 psf Live Load: 40 psf and deflection limit of L/360
Max span calculations have been based on this RedX Apps Span Calculator.
| Douglas Fir (north) Joist and Rafters Max Span Table | |||||
|---|---|---|---|---|---|
| Lumber Grade | Nominal Size | Spacing O.C. | |||
| 12 in | 16 in | 19.2 in | 24 in | ||
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Disclaimer:
While every effort has been made to insure the accuracy of the information presented, and special effort has been made to assure that the information reflects the state-of-the-art, RedX Technology nor its members assume any responsibility for any particular design prepared from this Span Calculator. Those using this Span Calculator assume all liability from its use.