Dimension lumber (2" to 4")

2x12

Standard: DOC PS 20 / NDS SupplementSource: Nominal → actual dry sizes (PS 20), calculated
xyb = 1.5d = 11.25
Cross-section, to scaledimensions in inches

Dimensions

Depthd
11.25in
Widthb
1.5in

Mass and area

Cross-sectional areaA
16.88in²
Outside perimeterP
25.5in

Strong axis x–x

Moment of inertiaIx
178in⁴
Elastic section modulusSx
31.64in³
Plastic section modulusZx
47.46in³
Radius of gyrationrx
3.248in

Weak axis y–y

Moment of inertiaIy
3.164in⁴
Elastic section modulusSy
4.219in³
Plastic section modulusZy
6.328in³
Radius of gyrationry
0.433in

Torsion and stability

Torsional constantJ
11.59in⁴

Equivalents in other standards