ISWB – wide-flange beams

ISWB 300

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 = 300tf = 10tf = 10tw = 7.4tw = 7.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
300mm
Flange widthbf
200mm
Web thicknesstw
7.4mm
Flange thicknesstf
10mm
Root radiusr1
11mm
Toe radiusr2
5.5mm

Mass and area

Mass per lengthm
48.18kg/m
Cross-sectional areaA
6,138mm²
Published area (standard)A pub.
6,130mm²
Outside perimeterP
1,335mm

Strong axis x–x

Moment of inertiaIx
98.610⁶ mm⁴
Elastic section modulusSx
657.310³ mm³
Plastic section modulusZx
73310³ mm³
Radius of gyrationrx
126.7mm

Weak axis y–y

Moment of inertiaIy
10.9710⁶ mm⁴
Elastic section modulusSy
109.710³ mm³
Plastic section modulusZy
181.410³ mm³
Radius of gyrationry
42.28mm

Slenderness ratios

Flange slope used%
6.99

Equivalents in other standards