ISLB – light beams

ISLB 325

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 = 165d = 325tf = 9.8tf = 9.8tw = 7tw = 7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
325mm
Flange widthbf
165mm
Web thicknesstw
7mm
Flange thicknesstf
9.8mm
Root radiusr1
16mm
Toe radiusr2
8mm

Mass and area

Mass per lengthm
43.46kg/m
Cross-sectional areaA
5,537mm²
Published area (standard)A pub.
5,480mm²
Outside perimeterP
1,255mm

Strong axis x–x

Moment of inertiaIx
100.510⁶ mm⁴
Elastic section modulusSx
618.710³ mm³
Plastic section modulusZx
697.210³ mm³
Radius of gyrationrx
134.8mm

Weak axis y–y

Moment of inertiaIy
7.00110⁶ mm⁴
Elastic section modulusSy
84.8610³ mm³
Plastic section modulusZy
134.310³ mm³
Radius of gyrationry
35.56mm

Slenderness ratios

Flange slope used%
0

Equivalents in other standards