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Need Help Designing or Engineering Your Building
Project?
Timber Technologies has engineering support for
its clients. We can assist you in finding the right columns for the
project. We offer a downloadable Building
Requirements Form to help get the project started. Otherwise
feel free to use the following technical information in your project
plan.
Allowable Stresses
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MEMBERS
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GRADE
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Fb
beam
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Fb
colomn
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Fc
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E-value
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Fv
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2x6 Treated Base
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SYP #1
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2200*
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3040*
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1750
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1,700,000
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175
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2x6 Upper
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SPF 1650
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2200*
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3040*
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1700
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1,500,000
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135
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2x8 Treated Base
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SYP #1
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1985
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2760*
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1650
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1,700,000
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175
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2x8 Upper
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SPF 1650
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2200*
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3040*
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1700
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1,500,000
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135
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Base treated to .60 CCA for ground contact (Lifetime
Warranty against insect damage and decay)
SYP- Southern Yellow Pine
SPF- Spruce-Pine-Fir
1650-Fb- Fiber Stress Bending- Machine Stress Rated
*Increased by 1.15 for multiple members. All design specifications from
NDS "2001"
-A flat use factor used for beams
-Fb x 1.6 (D.O.L. factor for wind and seismic) for columns
Section Properties
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COLUMN
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DIMENSION
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AREA
(12in2)
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Sx
(in3)
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Ix
(in4)
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3-ply 2x6
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4.125" x 5.3"
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21.65
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19.98
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53.71
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4-ply 2x6
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5.5" x 5.3"
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28.87
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26.58
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71.44
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3-ply 2x8
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4.125" x 7.125"
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29.39
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35.11
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125.09
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4-ply 2x8
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5.5" x 7.125"
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39.19
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46.70
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166.39
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*Materials may be substituted to fit design requirements*
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