S – standard beams

S310x74

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 = 139d = 305tf = 16.7tf = 16.7tw = 17.4tw = 17.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
305mm
Flange widthbf
139mm
Web thicknesstw
17.4mm
Flange thicknesstf
16.7mm
Distance k (design)kdes
36.6mm
Distance k (detailing)kdet
36.5mm
Web clear depthT
232mm
Distance between flange centroidsho
287mm

Mass and area

Mass per lengthm
74kg/m
Cross-sectional areaA
9,480mm²

Strong axis x–x

Moment of inertiaIx
12610⁶ mm⁴
Elastic section modulusSx
82910³ mm³
Plastic section modulusZx
99810³ mm³
Radius of gyrationrx
116mm

Weak axis y–y

Moment of inertiaIy
6.4910⁶ mm⁴
Elastic section modulusSy
93.210³ mm³
Plastic section modulusZy
16910³ mm³
Radius of gyrationry
26.2mm

Torsion and stability

Torsional constantJ
1,15010³ mm⁴
Warping constantCw
13510⁹ mm⁶
Effective radius of gyrationrts
33.5mm

Slenderness ratios

Flange slendernessbf/2tf
4.16
Web slendernessh/tw
13.7

Equivalents in other standards