W shapes (wide flange)

W40X331 W1000X494

Standard: AISC Shapes Database v16.0Source: AISC (aisc.org) — Shapes Database v16.0 (Excel file)
Values published by AISC, in US customary (original) and SI units.
xybf = 12.2d = 40.8tf = 2.13tf = 2.13tw = 1.22tw = 1.22
Cross-section, to scaledimensions in inches

Dimensions

Depthd
40.8in
Flange widthbf
12.2in
Web thicknesstw
1.22in
Flange thicknesstf
2.13in
Distance k (design)kdes
3.31in
Distance k (detailing)kdet
3.375in
Distance k1k1
1.813in
Web clear depthT
34in
Distance between flange centroidsho
38.7in

Mass and area

Mass per lengthm
331lb/ft
Cross-sectional areaA
97.7in²

Strong axis x–x

Moment of inertiaIx
24,700in⁴
Elastic section modulusSx
1,210in³
Plastic section modulusZx
1,430in³
Radius of gyrationrx
15.9in

Weak axis y–y

Moment of inertiaIy
644in⁴
Elastic section modulusSy
106in³
Plastic section modulusZy
172in³
Radius of gyrationry
2.57in

Torsion and stability

Torsional constantJ
105in⁴
Warping constantCw
241,000in⁶
Effective radius of gyrationrts
3.21in

Slenderness ratios

Flange slendernessbf/2tf
2.86
Web slendernessh/tw
28

Equivalents in other standards