IR – wide flange (ASTM A6 W)

IR 250x49.1

Standard: ASTM A6 / IMCASource: SI values from the AISC v16.0 database
IR designation built from the metric W; cross-check with the IMCA Manual.
xybf = 202d = 247tf = 11tf = 11tw = 7.37tw = 7.37
Cross-section, to scaledimensions in mm

Dimensions

Depthd
247mm
Flange widthbf
202mm
Web thicknesstw
7.37mm
Flange thicknesstf
11mm
Distance k (design)kdes
23.7mm
Distance k (detailing)kdet
28.6mm
Distance k1k1
19.1mm
Web clear depthT
191mm
Distance between flange centroidsho
236mm

Mass and area

Mass per lengthm
49.1kg/m
Cross-sectional areaA
6,260mm²

Strong axis x–x

Moment of inertiaIx
71.210⁶ mm⁴
Elastic section modulusSx
57410³ mm³
Plastic section modulusZx
63610³ mm³
Radius of gyrationrx
106mm

Weak axis y–y

Moment of inertiaIy
15.210⁶ mm⁴
Elastic section modulusSy
15110³ mm³
Plastic section modulusZy
22910³ mm³
Radius of gyrationry
49.3mm

Torsion and stability

Torsional constantJ
24310³ mm⁴
Warping constantCw
21210⁹ mm⁶
Effective radius of gyrationrts
55.9mm

Slenderness ratios

Flange slendernessbf/2tf
9.15
Web slendernessh/tw
27.1

Equivalents in other standards