Beam Span Calculator
Lumber Species
Southern Pine
Douglas Fir
Douglas Fir-Larch
Hemlock-Fir
Spruce-Pine-Fir
Redwood
Western Cedar
Ponderosa Pine
Red Pine
Beam Size/Lamination
2-2x6
2-2x8
2-2x10
2-2x12
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3-2x6
3-2x8
3-2x10
3-2x12
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3x6
3x8
3x10
3x12
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4x6
4x8
4x10
4x12
Joist Span (less than or equal to)
6'
8'
10'
12'
14'
16'
18'
Overhang?