W – wide flange

W840x299

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 = 399d = 856tf = 29.2tf = 29.2tw = 18.2tw = 18.2
Cross-section, to scaledimensions in mm

Dimensions

Depthd
856mm
Flange widthbf
399mm
Web thicknesstw
18.2mm
Flange thicknesstf
29.2mm
Distance k (design)kdes
49.3mm
Distance k (detailing)kdet
61.9mm
Distance k1k1
39.7mm
Web clear depthT
733mm
Distance between flange centroidsho
828mm

Mass and area

Mass per lengthm
299kg/m
Cross-sectional areaA
38,100mm²

Strong axis x–x

Moment of inertiaIx
4,83010⁶ mm⁴
Elastic section modulusSx
11,20010³ mm³
Plastic section modulusZx
12,70010³ mm³
Radius of gyrationrx
356mm

Weak axis y–y

Moment of inertiaIy
31210⁶ mm⁴
Elastic section modulusSy
1,56010³ mm³
Plastic section modulusZy
2,41010³ mm³
Radius of gyrationry
90.4mm

Torsion and stability

Torsional constantJ
8,66010³ mm⁴
Warping constantCw
53,20010⁹ mm⁶
Effective radius of gyrationrts
107mm

Slenderness ratios

Flange slendernessbf/2tf
6.85
Web slendernessh/tw
41.7

Equivalents in other standards