W shapes (wide flange)

W12X79 W310X117

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 = 12.1d = 12.4tf = 0.735tf = 0.735tw = 0.47tw = 0.47
Cross-section, to scaledimensions in inches

Dimensions

Depthd
12.4in
Flange widthbf
12.1in
Web thicknesstw
0.47in
Flange thicknesstf
0.735in
Distance k (design)kdes
1.33in
Distance k (detailing)kdet
1.625in
Distance k1k1
1.063in
Web clear depthT
9.125in
Distance between flange centroidsho
11.7in

Mass and area

Mass per lengthm
79lb/ft
Cross-sectional areaA
23.2in²

Strong axis x–x

Moment of inertiaIx
662in⁴
Elastic section modulusSx
107in³
Plastic section modulusZx
119in³
Radius of gyrationrx
5.34in

Weak axis y–y

Moment of inertiaIy
216in⁴
Elastic section modulusSy
35.8in³
Plastic section modulusZy
54.3in³
Radius of gyrationry
3.05in

Torsion and stability

Torsional constantJ
3.84in⁴
Warping constantCw
7,330in⁶
Effective radius of gyrationrts
3.43in

Slenderness ratios

Flange slendernessbf/2tf
8.22
Web slendernessh/tw
20.7

Equivalents in other standards