ISLB – light beams

ISLB 200

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 = 100d = 200tf = 7.3tf = 7.3tw = 5.4tw = 5.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
200mm
Flange widthbf
100mm
Web thicknesstw
5.4mm
Flange thicknesstf
7.3mm
Root radiusr1
9.5mm
Toe radiusr2
3mm

Mass and area

Mass per lengthm
19.71kg/m
Cross-sectional areaA
2,511mm²
Published area (standard)A pub.
2,520mm²
Outside perimeterP
749.1mm

Strong axis x–x

Moment of inertiaIx
16.7410⁶ mm⁴
Elastic section modulusSx
167.410³ mm³
Plastic section modulusZx
191.110³ mm³
Radius of gyrationrx
81.65mm

Weak axis y–y

Moment of inertiaIy
0.945610⁶ mm⁴
Elastic section modulusSy
18.9110³ mm³
Plastic section modulusZy
32.8710³ mm³
Radius of gyrationry
19.41mm

Equivalents in other standards