ISLB – light beams

ISLB 125

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 = 75d = 125tf = 6.5tf = 6.5tw = 4.4tw = 4.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
125mm
Flange widthbf
75mm
Web thicknesstw
4.4mm
Flange thicknesstf
6.5mm
Root radiusr1
8mm
Toe radiusr2
3mm

Mass and area

Mass per lengthm
11.79kg/m
Cross-sectional areaA
1,502mm²
Published area (standard)A pub.
1,510mm²
Outside perimeterP
509.2mm

Strong axis x–x

Moment of inertiaIx
4.01310⁶ mm⁴
Elastic section modulusSx
64.2110³ mm³
Plastic section modulusZx
73.1510³ mm³
Radius of gyrationrx
51.7mm

Weak axis y–y

Moment of inertiaIy
0.369110⁶ mm⁴
Elastic section modulusSy
9.84310³ mm³
Plastic section modulusZy
16.710³ mm³
Radius of gyrationry
15.68mm

Equivalents in other standards