W – wide flange

W250x101

Standard: ASTM A6/A6M (désignations métriques)Source: SI values from the AISC v16.0 database (ASTM A6 shapes common to Canada)
ASTM A6 rolled shapes are the same in Canada; the CISC list may differ slightly (availability).
xybf = 257d = 264tf = 19.6tf = 19.6tw = 11.9tw = 11.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
264mm
Flange widthbf
257mm
Web thicknesstw
11.9mm
Flange thicknesstf
19.6mm
Distance k (design)kdes
32.3mm
Distance k (detailing)kdet
36.5mm
Distance k1k1
22.2mm
Web clear depthT
191mm
Distance between flange centroidsho
245mm

Mass and area

Mass per lengthm
101kg/m
Cross-sectional areaA
12,800mm²

Strong axis x–x

Moment of inertiaIx
16410⁶ mm⁴
Elastic section modulusSx
1,24010³ mm³
Plastic section modulusZx
1,40010³ mm³
Radius of gyrationrx
113mm

Weak axis y–y

Moment of inertiaIy
55.810⁶ mm⁴
Elastic section modulusSy
43310³ mm³
Plastic section modulusZy
65710³ mm³
Radius of gyrationry
65.8mm

Torsion and stability

Torsional constantJ
1,48010³ mm⁴
Warping constantCw
83210⁹ mm⁶
Effective radius of gyrationrts
74.2mm

Slenderness ratios

Flange slendernessbf/2tf
6.58
Web slendernessh/tw
16.7

Equivalents in other standards