ISWB – wide-flange beams

ISWB 400

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 = 200d = 400tf = 13tf = 13tw = 8.6tw = 8.6
Cross-section, to scaledimensions in mm

Dimensions

Depthd
400mm
Flange widthbf
200mm
Web thicknesstw
8.6mm
Flange thicknesstf
13mm
Root radiusr1
13mm
Toe radiusr2
6.5mm

Mass and area

Mass per lengthm
66.68kg/m
Cross-sectional areaA
8,494mm²
Published area (standard)A pub.
8,500mm²
Outside perimeterP
1,509mm

Strong axis x–x

Moment of inertiaIx
233.510⁶ mm⁴
Elastic section modulusSx
1,16710³ mm³
Plastic section modulusZx
1,31810³ mm³
Radius of gyrationrx
165.8mm

Weak axis y–y

Moment of inertiaIy
12.8210⁶ mm⁴
Elastic section modulusSy
128.210³ mm³
Plastic section modulusZy
22410³ mm³
Radius of gyrationry
38.85mm

Equivalents in other standards