Timbers – 5" and larger

5x10

Standard: DOC PS 20 / NDS SupplementSource: Nominal − ½" (green), calculated
xyb = 4.5d = 9.5
Cross-section, to scaledimensions in inches

Dimensions

Depthd
9.5in
Widthb
4.5in

Mass and area

Cross-sectional areaA
42.75in²
Outside perimeterP
28in

Strong axis x–x

Moment of inertiaIx
321.5in⁴
Elastic section modulusSx
67.69in³
Plastic section modulusZx
101.5in³
Radius of gyrationrx
2.742in

Weak axis y–y

Moment of inertiaIy
72.14in⁴
Elastic section modulusSy
32.06in³
Plastic section modulusZy
48.09in³
Radius of gyrationry
1.299in

Torsion and stability

Torsional constantJ
202.8in⁴

Equivalents in other standards