Dimension lumber (2" to 4")

2x6

Standard: DOC PS 20 / NDS SupplementSource: Nominal → actual dry sizes (PS 20), calculated
xyb = 1.5d = 5.5
Cross-section, to scaledimensions in inches

Dimensions

Depthd
5.5in
Widthb
1.5in

Mass and area

Cross-sectional areaA
8.25in²
Outside perimeterP
14in

Strong axis x–x

Moment of inertiaIx
20.8in⁴
Elastic section modulusSx
7.562in³
Plastic section modulusZx
11.34in³
Radius of gyrationrx
1.588in

Weak axis y–y

Moment of inertiaIy
1.547in⁴
Elastic section modulusSy
2.062in³
Plastic section modulusZy
3.094in³
Radius of gyrationry
0.433in

Torsion and stability

Torsional constantJ
5.125in⁴

Equivalents in other standards