Timbers – 5" and larger

8x14

Standard: DOC PS 20 / NDS SupplementSource: Nominal − ½" (green), calculated
xyb = 7.5d = 13.5
Cross-section, to scaledimensions in inches

Dimensions

Depthd
13.5in
Widthb
7.5in

Mass and area

Cross-sectional areaA
101.2in²
Outside perimeterP
42in

Strong axis x–x

Moment of inertiaIx
1,538in⁴
Elastic section modulusSx
227.8in³
Plastic section modulusZx
341.7in³
Radius of gyrationrx
3.897in

Weak axis y–y

Moment of inertiaIy
474.6in⁴
Elastic section modulusSy
126.6in³
Plastic section modulusZy
189.8in³
Radius of gyrationry
2.165in

Torsion and stability

Torsional constantJ
1,239in⁴

Equivalents in other standards