Dimension lumber (2" to 4")

2x5

Standard: DOC PS 20 / NDS SupplementSource: Nominal → actual dry sizes (PS 20), calculated
xyb = 1.5d = 4.5
Cross-section, to scaledimensions in inches

Dimensions

Depthd
4.5in
Widthb
1.5in

Mass and area

Cross-sectional areaA
6.75in²
Outside perimeterP
12in

Strong axis x–x

Moment of inertiaIx
11.39in⁴
Elastic section modulusSx
5.062in³
Plastic section modulusZx
7.594in³
Radius of gyrationrx
1.299in

Weak axis y–y

Moment of inertiaIy
1.266in⁴
Elastic section modulusSy
1.688in³
Plastic section modulusZy
2.531in³
Radius of gyrationry
0.433in

Torsion and stability

Torsional constantJ
4in⁴

Equivalents in other standards