W shapes (wide flange)

W12X279 W310X415

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 = 13.1d = 15.9tf = 2.47tf = 2.47tw = 1.53tw = 1.53
Cross-section, to scaledimensions in inches

Dimensions

Depthd
15.9in
Flange widthbf
13.1in
Web thicknesstw
1.53in
Flange thicknesstf
2.47in
Distance k (design)kdes
3.07in
Distance k (detailing)kdet
3.375in
Distance k1k1
1.625in
Web clear depthT
9.125in
Distance between flange centroidsho
13.4in

Mass and area

Mass per lengthm
279lb/ft
Cross-sectional areaA
81.9in²

Strong axis x–x

Moment of inertiaIx
3,110in⁴
Elastic section modulusSx
393in³
Plastic section modulusZx
481in³
Radius of gyrationrx
6.16in

Weak axis y–y

Moment of inertiaIy
937in⁴
Elastic section modulusSy
143in³
Plastic section modulusZy
220in³
Radius of gyrationry
3.38in

Torsion and stability

Torsional constantJ
143in⁴
Warping constantCw
42,000in⁶
Effective radius of gyrationrts
4in

Slenderness ratios

Flange slendernessbf/2tf
2.66
Web slendernessh/tw
6.35

Equivalents in other standards