Navigation

Directory


Edward Flanders

Building Official

Lionel Mailoux

Asst. Building Official

Debra Lefcheck

Technical Assistant

Address:

230C Mountain Rd.
Suffield, CT 06078

Phone:

(860) 668 3878

Fax:

(860) 668 3879

Town Offices Directory

Town Offices

    Building Department - Lumber Spans

    2003 International Residential Code (IRC)
    Floor Joists- All Rooms Except Sleeping Rooms and Attics (40 PSF Live Load, 10 PSF Dead Load) L/360
      2x6 2x8 2x10 2x12
    Species and Grade 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc
    #1/#2 Doug Fir/Larch North 10'9 9'9 8'0 14'2 12'5 10'2 17'6 15'2 12'5 20'4 17'7 14'4
    #2 Doug Fir/Larch (US) 10'9 9'9 8'1 14'2 12'7 10'3 17'9 15'5 12'7 20'7 17'10 14'7
    #1/#2 Hem Fir North 10'9 9'9 8'6 14'2 12'10 11'0 18'0 16'5 13'5 21'11 19'1 15'7
    #2 Hem Fir (US) 10'0 9'1 7'11 13'2 12'0 10'2 16'10 15'2 12'5 20'4 17'7 14'4
    #1/#2 Spruce/Pine/Fir North 10'3 9'4 8'1 13'6 12'3 10'3 17'3 15'5 12'7 20'7 17'10 14'7
    Decks #2 PT So. Yel. Pine. (SPC) 10'4 9'5 7'10 13'8 12'5 10'2 17'5 15'10 13'1 21'2 18'10 15'5
    Floor Joists- Sleeping Rooms and Attics (30 PSF Live Load, 10 PSF Dead Load) L/360
      2x6 2x8 2x10 2x12
    Species and Grade 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc
    #1/#2 Doug Fir/Larch North 11'10 10'9 8'11 15'7 13'11 11'4 19'7 16'11 13'10 22'8 19'8 16'1
    #2 Doug Fir/Larch (US) 11'10 10'9 9'1 15'7 14'1 11'6 19'10 17'2 14'1 23'0 19'11 16'3
    #1/#2 Hem Fir North 11'10 10'9 9'4 15'7 14'2 12'4 19'10 18'0 15'0 24'2 21'4 17'5
    #2 Hem Fir (US) 11'0 10'0 8'9 14'6 13'2 11'4 18'6 16'10 13'10 22'6 19'8 16'1
    #1/#2 Spruce/Pine/Fir 11'3 10'3 8'11 14'11 13'6 11'6 19'0 17'2 14'1 23'0 19'11 16'3
    Ceiling Joists- Drywall- No Future Rooms, Limited Storage: (20 PSF Live Load, 10 PSF Dead Load) L/240
      2x4 2x6 2x8 2x10
    Species and Grade 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc
    #1/#2 Doug Fir/Larch North 9'10 8'8 7'1 14'7 12'8 10'4 18'6 16'0 13'1 22'7 19'7 16'0
    #2 Doug Fir/Larch (US) 9'10 8'11 7'3 15'0 13'0 10'8 19'1 16'6 13'6 23'3 20'2 16'5
    #1/#2 Hem Fir North 9'10 8'11 7'8 15'6 13'9 11'2 20'1 17'5 14'2 24'6 21'3 17'4
    #2 Hem Fir (US) 9'2 8'4 7'1 14'5 12'8 10'4 18'6 16'0 13'1 22'7 19'7 16'0
    #1/#2 Spruce/Pine/Fir 9'5 8'7 7'2 14'9 12'10 10'6 18'9 16'3 13'3 22'11 19'10 16'3
    Rafters- Snow Region Light Roof covering, Drywall, No Attic Space (30 PSF Live Load, 10 PSF Dead Load) L/240
      2x6 2x8 2x10 2x12
    Species and Grade 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc
    #1/#2 Doug Fir/Larch North 13'6 11'9 9'7 17'2 14'11 12'2 21'0 18'2 14'10 24'4 21'1 17'3
    #2 Doug Fir/Larch (US) 13'2 11'5 9'4 16'8 14'5 11'9 20'4 17'8 14'5 23'7 20'5 16'8
    #1/#2 Hem Fir North 13'6 12'3 10'5 17'10 16'2 13'2 22'9 19'9 16'1 26'5 22'10 18'8
    #2 Hem Fir (US) 12'7 11'1 9'1 16'2 14'0 11'6 19'10 17'2 14'0 22'11 19'11 16'3
    #1/#2 Spruce/Pine/Fir 12'11 11'9 9'9 17'0 15'1 12'4 21'4 18'5 15'1 24'8 21'5 17'6
    Rafters- Snow Region Light Roof covering, (30 PSF Snow Load, 10 PSF Dead Load) L/180 No Finished Ceiling
      2x6 2x8 2x10 2x12
    Species and Grade 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc 12" oc 16" oc 24" oc
    #1/#2 Doug Fir/Larch North 13'7 11'9 9'7 17'2 14'11 12'2 21'0 18'2 14'10 24'4 21'1 17'3
    #2 Doug Fir/Larch (US) 14'0 12'1 9'10 17'8 15'4 12'6 21'7 18'9 15'3 24'8 21'5 17'6
    #1/#2 Hem Fir North 14'9 12'9 10'5 18'8 16'2 13'2 22'9 19'9 16'1 26'5 22'10 18'8
    #2 Hem Fir (US) 13'7 11'9 9'7 17'2 14'11 12'2 21'0 18'2 14'10 24'4 21'1 17'3
    #1/#2 Spruce/Pine/Fir 13'9 11'11 9'9 17'5 15'1 12'4 21'4 18'5 15'1 24'8 21'5 17'6
     
    Roof Pitch 15 14 13 12 11 10 9 8 7 6 5 4
    Slope Factor 1.601 1.537 1.474 1.414 1.357 1.302 1.25 1.202 1.158 1.118 1.083 1.054
    Roof Coverage = slope Factor x sq footage of foot print under the roof
    Example: 25x40 colonial with 6/12 pitch would need 1,000 sf (footprint) x 1.118 (Slope Factor) = 1,118 sf on the roof. (11.18 squares of roofing)
    This table is only a guide and should not be substituted for the Building Code.
    Spans are taken from "The U.S. Span Book for Major Lumber Species" 2002 Edition http://www.cwc.ca
    Southern Pine Council "Pressure Treated Southern Pine" Standards Specifications and Applications Guide http://www.southernpine.com
    Last Updated on Oct 31, 2005