ISLB – light beams

ISLB 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 = 6.4tf = 6.4tw = 4tw = 4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
100mm
Flange widthbf
50mm
Web thicknesstw
4mm
Flange thicknesstf
6.4mm
Root radiusr1
7mm
Toe radiusr2
3mm

Mass and area

Mass per lengthm
7.955kg/m
Cross-sectional areaA
1,013mm²
Published area (standard)A pub.
1,020mm²
Outside perimeterP
367.7mm

Strong axis x–x

Moment of inertiaIx
1.6610⁶ mm⁴
Elastic section modulusSx
33.210³ mm³
Plastic section modulusZx
38.4910³ mm³
Radius of gyrationrx
40.48mm

Weak axis y–y

Moment of inertiaIy
0.115510⁶ mm⁴
Elastic section modulusSy
4.61910³ mm³
Plastic section modulusZy
7.74410³ mm³
Radius of gyrationry
10.67mm

Equivalents in other standards