Timbers – 5" and larger

12x14

Standard: DOC PS 20 / NDS SupplementSource: Nominal − ½" (green), calculated
xyb = 11.5d = 13.5
Cross-section, to scaledimensions in inches

Dimensions

Depthd
13.5in
Widthb
11.5in

Mass and area

Cross-sectional areaA
155.2in²
Outside perimeterP
50in

Strong axis x–x

Moment of inertiaIx
2,358in⁴
Elastic section modulusSx
349.3in³
Plastic section modulusZx
524in³
Radius of gyrationrx
3.897in

Weak axis y–y

Moment of inertiaIy
1,711in⁴
Elastic section modulusSy
297.6in³
Plastic section modulusZy
446.3in³
Radius of gyrationry
3.32in

Torsion and stability

Torsional constantJ
3,332in⁴

Equivalents in other standards