ISMB – medium beams

ISMB 125

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 = 70d = 125tf = 8tf = 8tw = 5tw = 5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
125mm
Flange widthbf
70mm
Web thicknesstw
5mm
Flange thicknesstf
8mm
Root radiusr1
9mm
Toe radiusr2
4.5mm

Mass and area

Mass per lengthm
13.36kg/m
Cross-sectional areaA
1,702mm²
Published area (standard)A pub.
1,700mm²
Outside perimeterP
486.4mm

Strong axis x–x

Moment of inertiaIx
4.45310⁶ mm⁴
Elastic section modulusSx
71.2510³ mm³
Plastic section modulusZx
82.0710³ mm³
Radius of gyrationrx
51.15mm

Weak axis y–y

Moment of inertiaIy
0.384610⁶ mm⁴
Elastic section modulusSy
10.9910³ mm³
Plastic section modulusZy
18.4610³ mm³
Radius of gyrationry
15.03mm

Equivalents in other standards