ISLB – light beams

ISLB 350

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 = 350tf = 11.4tf = 11.4tw = 7.4tw = 7.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
350mm
Flange widthbf
165mm
Web thicknesstw
7.4mm
Flange thicknesstf
11.4mm
Root radiusr1
16mm
Toe radiusr2
8mm

Mass and area

Mass per lengthm
49.64kg/m
Cross-sectional areaA
6,323mm²
Published area (standard)A pub.
6,300mm²
Outside perimeterP
1,289mm

Strong axis x–x

Moment of inertiaIx
132.710⁶ mm⁴
Elastic section modulusSx
758.110³ mm³
Plastic section modulusZx
856.210³ mm³
Radius of gyrationrx
144.9mm

Weak axis y–y

Moment of inertiaIy
7.26910⁶ mm⁴
Elastic section modulusSy
88.1110³ mm³
Plastic section modulusZy
145.810³ mm³
Radius of gyrationry
33.91mm

Slenderness ratios

Flange slope used%
6.99

Equivalents in other standards