ISLB – light beams

ISLB(P) 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 = 4.3tw = 4.3
Cross-section, to scaledimensions in mm

Dimensions

Depthd
100mm
Flange widthbf
50mm
Web thicknesstw
4.3mm
Flange thicknesstf
7mm
Root radiusr1
8mm
Toe radiusr2
3mm

Mass and area

Mass per lengthm
8.663kg/m
Cross-sectional areaA
1,104mm²
Published area (standard)A pub.
1,110mm²
Outside perimeterP
365.9mm

Strong axis x–x

Moment of inertiaIx
1.79310⁶ mm⁴
Elastic section modulusSx
35.8610³ mm³
Plastic section modulusZx
41.7910³ mm³
Radius of gyrationrx
40.31mm

Weak axis y–y

Moment of inertiaIy
0.128510⁶ mm⁴
Elastic section modulusSy
5.14110³ mm³
Plastic section modulusZy
8.59810³ mm³
Radius of gyrationry
10.79mm

Equivalents in other standards