ISWB – wide-flange beams

ISWB 550

Standard: IS 808:2021Source: IS 808:2021 dimensions (BIS) — calculated properties, flange slope 98° (8°)
Tapered-flange sections; flange thickness measured at the quarter of the flange.
xybf = 250d = 550tf = 17.6tf = 17.6tw = 10.5tw = 10.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
550mm
Flange widthbf
250mm
Web thicknesstw
10.5mm
Flange thicknesstf
17.6mm
Root radiusr1
16mm
Toe radiusr2
8mm

Mass and area

Mass per lengthm
112.4kg/m
Cross-sectional areaA
14,324mm²
Published area (standard)A pub.
14,300mm²
Outside perimeterP
1,987mm

Strong axis x–x

Moment of inertiaIx
74710⁶ mm⁴
Elastic section modulusSx
2,71610³ mm³
Plastic section modulusZx
3,06110³ mm³
Radius of gyrationrx
228.4mm

Weak axis y–y

Moment of inertiaIy
34.8210⁶ mm⁴
Elastic section modulusSy
278.610³ mm³
Plastic section modulusZy
480.210³ mm³
Radius of gyrationry
49.3mm

Equivalents in other standards