W shapes (wide flange)

W40X264 W1000X393

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 = 11.9d = 40tf = 1.73tf = 1.73tw = 0.96tw = 0.96
Cross-section, to scaledimensions in inches

Dimensions

Depthd
40in
Flange widthbf
11.9in
Web thicknesstw
0.96in
Flange thicknesstf
1.73in
Distance k (design)kdes
2.91in
Distance k (detailing)kdet
3in
Distance k1k1
1.688in
Web clear depthT
34in
Distance between flange centroidsho
38.3in

Mass and area

Mass per lengthm
264lb/ft
Cross-sectional areaA
77.4in²

Strong axis x–x

Moment of inertiaIx
19,400in⁴
Elastic section modulusSx
971in³
Plastic section modulusZx
1,130in³
Radius of gyrationrx
15.8in

Weak axis y–y

Moment of inertiaIy
493in⁴
Elastic section modulusSy
82.6in³
Plastic section modulusZy
132in³
Radius of gyrationry
2.52in

Torsion and stability

Torsional constantJ
56.1in⁴
Warping constantCw
181,000in⁶
Effective radius of gyrationrts
3.12in

Slenderness ratios

Flange slendernessbf/2tf
3.45
Web slendernessh/tw
35.6

Equivalents in other standards