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Setup
Wood Joist Span Tables
JOIN, DESIGN & PURCHASE NOW
Table
Joist Conditions
A-1 Maximum Spans for Floor Joists - General Cases
A-2 Maximum Spans for Floor Joists - Special Cases
A-3 Maximum Spans for Ceiling Joists not Accessible by a Stairway
A-4/A-5 Maximum Spans for Roof Joists
A-6/A-7 Maximum Spans for Roof Rafters
Commercial Designation:
D.Fir-L
Hem-Fir
S-P-F
Northern
Member Size:
2x4
2x6
2x8
2x10
2x12
Brace or Condition:
Strapping
Bridging
Strapping and Bridging
Clg Furg without Brg
Clg Furg with Brg
Conc. Topping
Lumber Grade:
SS
No.1/No.2
No.3
Construction
Standard
Frame Spacing:
12"
16"
24"
Image
Results
Specified Snow Load:
[[climatic_data]]
kPa
Maximum Span
[[mSpan]]
[[mSpanMeter]]m