Span Chart Data Sheet

TECHNICAL

Data Sheet

Span Chart

FLOOR BEAM SPAN CHART FOR SINGLE SPAN SIMPLE BEAMS, LOADS IN POUNDS PER LINEAL FOOT (PLF).

Total Load (plf) Live Load (plf) Dead Load (plf)

Species

3 x 6 3 x 8 3 x 10 3 x 12 4 x 6 4 x 8 4 x 10 4 x 12 6 x 6 6 x 8 6 x 10 6 x 12 8 x 8 8 x 10 8 x 12

Redwood No. 2 8' 0" 10' 1" 12' 4" 14' 3" 8' 11" 11' 10" 15' 1" 17' 9" 10' 6" 14' 4" 18' 2" 22' 0" 16' 1" 20' 5" 24' 9"

125 100 25 Douglas-fir No. 1 9' 4" 11' 10" 14' 6" 16' 9" 10' 8" 14' 1" 17' 10" 20' 9" 12' 2" 16' 7" 21' 0" 25' 5" 18' 5" 23' 3" 28' 2"

Douglas-fir No. 2 8' 10" 11' 3" 13' 9" 15' 11" 10' 5" 13' 9" 16' 11" 19' 8" 10' 6" 14' 4" 19' 7" 23' 9" 16' 9" 21' 2" 26' 4"

Redwood No. 2 5' 8" 7' 2" 8' 8" 10' 1" 6' 8" 8' 9" 10' 19" 12' 6" 7' 5" 10' 1" 12' 10" 15' 6" 11' 10" 15' 0" 18' 2"

250 200 50 Douglas-fir No. 1 6' 7" 8' 4" 10' 3" 11' 10" 7' 9" 10' 3" 12' 7" 14' 8" 9' 5" 12' 10" 16' 8" 20' 2" 14' 7" 18' 6" 22' 5"

Douglas-fir No. 2 6' 3" 7' 11" 9' 8" 11' 3" 7' 5" 9' 9" 11' 11" 13' 11" 7' 5" 10' 1" 13' 10" 16' 9" 11' 10" 15' 0" 19' 7"

Redwood No. 2 4' 7" 5' 10" 7' 1" 8' 3" 5' 5" 7' 2" 8' 9" 10' 3" 6' 0" 8' 3" 10' 5" 12' 8" 9' 8" 12' 3" 14' 10"

375 300 75 Douglas-fir No. 1 5' 5" 6' 10" 8' 4" 9' 8" 6' 4" 8' 6" 10' 3" 12' 0" 7' 8" 10' 5" 14' 1" 17' 0" 12' 2" 15' 6" 19' 7"

Douglas-fir No. 2 5' 1" 6' 6" 7' 11" 9' 2" 6' 0" 7' 11" 9' 9" 11' 4" 6' 0" 8' 3" 11' 4" 13' 8" 9' 8" 12' 3" 16' 0"

Notes: 1. Moisture content of 19% or less in service. 2. Deflection limits of 360/live load. 3. Floor live load (DOL = 1.0). 4. Compression edge braced laterally.



Contact: Humboldt Redwood Mill Sales at (707) 764-4472.

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