ISMB – medium beams

ISMB 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 = 140d = 300tf = 13.1tf = 13.1tw = 7.7tw = 7.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
300mm
Flange widthbf
140mm
Web thicknesstw
7.7mm
Flange thicknesstf
13.1mm
Root radiusr1
14mm
Toe radiusr2
7mm

Mass and area

Mass per lengthm
46.05kg/m
Cross-sectional areaA
5,867mm²
Published area (standard)A pub.
5,860mm²
Outside perimeterP
1,084mm

Strong axis x–x

Moment of inertiaIx
89.8610⁶ mm⁴
Elastic section modulusSx
599.110³ mm³
Plastic section modulusZx
680.910³ mm³
Radius of gyrationrx
123.8mm

Weak axis y–y

Moment of inertiaIy
4.86410⁶ mm⁴
Elastic section modulusSy
69.4810³ mm³
Plastic section modulusZy
117.610³ mm³
Radius of gyrationry
28.79mm

Equivalents in other standards