W shapes (wide flange)

W21X73 W530X109

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 = 8.3d = 21.2tf = 0.74tf = 0.74tw = 0.455tw = 0.455
Cross-section, to scaledimensions in inches

Dimensions

Depthd
21.2in
Flange widthbf
8.3in
Web thicknesstw
0.455in
Flange thicknesstf
0.74in
Distance k (design)kdes
1.24in
Distance k (detailing)kdet
1.438in
Distance k1k1
0.875in
Web clear depthT
18.38in
Distance between flange centroidsho
20.5in

Mass and area

Mass per lengthm
73lb/ft
Cross-sectional areaA
21.5in²

Strong axis x–x

Moment of inertiaIx
1,600in⁴
Elastic section modulusSx
151in³
Plastic section modulusZx
172in³
Radius of gyrationrx
8.64in

Weak axis y–y

Moment of inertiaIy
70.6in⁴
Elastic section modulusSy
17in³
Plastic section modulusZy
26.6in³
Radius of gyrationry
1.81in

Torsion and stability

Torsional constantJ
3.02in⁴
Warping constantCw
7,410in⁶
Effective radius of gyrationrts
2.19in

Slenderness ratios

Flange slendernessbf/2tf
5.6
Web slendernessh/tw
41.2

Equivalents in other standards