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BUILDING DEPARTMENT<br />
100 Parkers Mill • <strong>Oswego</strong>, IL 60543 • (630) 554-2310 • Fax: (630) 554-7545<br />
Website: http://www.oswegoil.org<br />
JOIST & BEAM SIZING FOR TREATED PERGOLAS<br />
J O I S T S P A N<br />
6' 7' 8' 9' 10' 11' 12' 13' 14' 15' 16'<br />
P<br />
4'<br />
Treated<br />
Joist<br />
Size<br />
Treated<br />
Beam<br />
Size<br />
2x4<br />
16"oc<br />
2x4<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x10<br />
16"oc<br />
2x10<br />
24"oc<br />
2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6<br />
O<br />
S<br />
T<br />
5'<br />
Treated<br />
Joist<br />
Size<br />
Treated<br />
Beam<br />
Size<br />
2x4<br />
16"oc<br />
2x4<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x10<br />
16"oc<br />
2x10<br />
24"oc<br />
2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6<br />
S<br />
P<br />
6'<br />
Treated<br />
Joist<br />
Size<br />
Treated<br />
Beam<br />
Size<br />
2x4<br />
16"oc<br />
2x4<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x10<br />
16"oc<br />
2x10<br />
24"oc<br />
2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x8 2 - 2x8<br />
A<br />
C<br />
I<br />
N<br />
7'<br />
Treated<br />
Joist<br />
Size<br />
Treated<br />
Beam<br />
Size<br />
2x4<br />
16"oc<br />
2x4<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x10<br />
16"oc<br />
2x10<br />
24"oc<br />
2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x6 2 - 2x8 2 - 2x8 2 - 2x8 2 - 2x8 2 - 2x8 2 - 2x8<br />
G<br />
8'<br />
Treated<br />
Joist<br />
Size<br />
Treated<br />
Beam<br />
Size<br />
2x4<br />
16"oc<br />
2x4<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x4<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x6<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x6<br />
16"oc<br />
2x8<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x8<br />
16"oc<br />
2x10<br />
24"oc<br />
2x10<br />
16"oc<br />
2x10<br />
24"oc<br />
2 - 2x6 2 - 2x6 2 - 2x8 2 - 2x8 2 - 2x8 2 - 2x8 2 - 2x8 2 - 2x8 2 - 2x10 2 - 2x10 2 - 2x10
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