ISMB – medium beams

ISMB 450

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 = 150d = 450tf = 17.4tf = 17.4tw = 9.4tw = 9.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
450mm
Flange widthbf
150mm
Web thicknesstw
9.4mm
Flange thicknesstf
17.4mm
Root radiusr1
15mm
Toe radiusr2
7.5mm

Mass and area

Mass per lengthm
72.43kg/m
Cross-sectional areaA
9,227mm²
Published area (standard)A pub.
9,220mm²
Outside perimeterP
1,417mm

Strong axis x–x

Moment of inertiaIx
303.910⁶ mm⁴
Elastic section modulusSx
1,35110³ mm³
Plastic section modulusZx
1,55310³ mm³
Radius of gyrationrx
181.5mm

Weak axis y–y

Moment of inertiaIy
8.34110⁶ mm⁴
Elastic section modulusSy
111.210³ mm³
Plastic section modulusZy
187.110³ mm³
Radius of gyrationry
30.07mm

Equivalents in other standards