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SPAN CHARTS

For everything you ever wanted to know about lumber, visit wwpa.org

Sleeping Rooms and Attics: 30 PSF Live, 10PSF Dead
#2 & Btr      L/360
2X6 2X8 2X10 2X12
  12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c.
SPF 10-5 9-6 13-9 12-6 17-6 15-11    
Hem-Fir 11-0 10-0 14-6 13-2 18-6 16-10 22-6 19-8

All Residential Rooms Except Sleeping Rooms and Attics: 40 PSF Live, 10PSF Dead
#2 & Btr     L/360
2X6 2X8 2X10 2X12
  12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c.
SPF 9-6 8-7 12-6 11-4 15-11 14-6    
Hem-Fir 10-0 9-1 13-2 12-00 16-10 15-2 20-04 17-7

Residential Exterior Decks and Balconies: 60 PSF Live, 10PSF Dead
#2 & Btr or Sel #1 as labeled    L/360
2X6 2X8 2X10 2X12
  12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c.
P.T. SYP 10-2
#1
9-3
#1
10-11
#2
9-11
#2
13-11
#2
12-3
#2
17-5
#1
15-1
#1

Ceiling Joist (Drywall - No future rooms & limited attic storage) : 20 PSF Live, 10PSF Dead
#2 & Btr     L/240
2X6 2X8 2X10 2X12
  12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c.
SPF 13-8 12-5 18-0 16-4 22-11 20-10    
Hem-Fir 14-5 13-1 19-0 17-3 24-3 21-11 29-4 25-5

Roof Rafters (Med. roof covering, drywall, no attic space.  Roof slope greater than 3:12) : 30 PSF Live, 15PSF Dead
#2 & Btr    L/240
2X6 2X8 2X10 2X12
  12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c. 12" o.c. 16" o.c.
SPF 11-11 10-7 15-6 13-5 18-11 16-4    
Hem-Fir 12-7 11-1 16-2 14-0 19-10 17-2 22-11 19-11

All information taken from WWPA's Western Lumber Span Tables (572).  Always verify with township building inspector or engineer prior to building to insure that these spans are correct for your application.
 
 
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