Dimension lumber (2" to 4")

3x5

Standard: DOC PS 20 / NDS SupplementSource: Nominal → actual dry sizes (PS 20), calculated
xyb = 2.5d = 4.5
Cross-section, to scaledimensions in inches

Dimensions

Depthd
4.5in
Widthb
2.5in

Mass and area

Cross-sectional areaA
11.25in²
Outside perimeterP
14in

Strong axis x–x

Moment of inertiaIx
18.98in⁴
Elastic section modulusSx
8.438in³
Plastic section modulusZx
12.66in³
Radius of gyrationrx
1.299in

Weak axis y–y

Moment of inertiaIy
5.859in⁴
Elastic section modulusSy
4.688in³
Plastic section modulusZy
7.031in³
Radius of gyrationry
0.7217in

Torsion and stability

Torsional constantJ
15.3in⁴

Equivalents in other standards