ISMB – medium beams

ISMB 100

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 = 50d = 100tf = 7tf = 7tw = 4.7tw = 4.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
100mm
Flange widthbf
50mm
Web thicknesstw
4.7mm
Flange thicknesstf
7mm
Root radiusr1
9mm
Toe radiusr2
4.5mm

Mass and area

Mass per lengthm
8.961kg/m
Cross-sectional areaA
1,142mm²
Published area (standard)A pub.
1,140mm²
Outside perimeterP
362.2mm

Strong axis x–x

Moment of inertiaIx
1.81610⁶ mm⁴
Elastic section modulusSx
36.3210³ mm³
Plastic section modulusZx
42.6310³ mm³
Radius of gyrationrx
39.89mm

Weak axis y–y

Moment of inertiaIy
0.125310⁶ mm⁴
Elastic section modulusSy
5.01410³ mm³
Plastic section modulusZy
8.58210³ mm³
Radius of gyrationry
10.48mm

Equivalents in other standards