W shapes (wide flange)

W40X278 W1000X415

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 = 12d = 40.2tf = 1.81tf = 1.81tw = 1.03tw = 1.03
Cross-section, to scaledimensions in inches

Dimensions

Depthd
40.2in
Flange widthbf
12in
Web thicknesstw
1.03in
Flange thicknesstf
1.81in
Distance k (design)kdes
2.99in
Distance k (detailing)kdet
3.063in
Distance k1k1
1.75in
Web clear depthT
34in
Distance between flange centroidsho
38.4in

Mass and area

Mass per lengthm
278lb/ft
Cross-sectional areaA
82.3in²

Strong axis x–x

Moment of inertiaIx
20,500in⁴
Elastic section modulusSx
1,020in³
Plastic section modulusZx
1,190in³
Radius of gyrationrx
15.8in

Weak axis y–y

Moment of inertiaIy
521in⁴
Elastic section modulusSy
87.1in³
Plastic section modulusZy
140in³
Radius of gyrationry
2.52in

Torsion and stability

Torsional constantJ
65in⁴
Warping constantCw
192,000in⁶
Effective radius of gyrationrts
3.13in

Slenderness ratios

Flange slendernessbf/2tf
3.31
Web slendernessh/tw
33.3

Equivalents in other standards