ISMB – medium beams

ISMB 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 = 140d = 400tf = 16tf = 16tw = 8.9tw = 8.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
400mm
Flange widthbf
140mm
Web thicknesstw
8.9mm
Flange thicknesstf
16mm
Root radiusr1
14mm
Toe radiusr2
7mm

Mass and area

Mass per lengthm
61.59kg/m
Cross-sectional areaA
7,846mm²
Published area (standard)A pub.
7,840mm²
Outside perimeterP
1,282mm

Strong axis x–x

Moment of inertiaIx
204.610⁶ mm⁴
Elastic section modulusSx
1,02310³ mm³
Plastic section modulusZx
1,17610³ mm³
Radius of gyrationrx
161.5mm

Weak axis y–y

Moment of inertiaIy
6.22110⁶ mm⁴
Elastic section modulusSy
88.8810³ mm³
Plastic section modulusZy
149.710³ mm³
Radius of gyrationry
28.16mm

Equivalents in other standards