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ISLB 100

Light Beam7.9 kg/m

Indian Standard Light Beam — IS 808:2021 | Depth 100mm × Width 75mm

Cross-Section (mm)
10075tw=4tf=5
Weight Calculator
7.9 kg/m × 6m × 1 =
47.4kg
0.047tonnes
Section Properties
Depth (D)100 mm
Width (B)75 mm
Web Thickness (tw)4 mm
Flange Thickness (tf)5 mm
Weight per Metre7.9 kg/m
Cross-sectional Area10.11 cm²
Moment of Inertia (Ixx)189.6 cm⁴
Moment of Inertia (Iyy)23.4 cm⁴
Section Modulus (Zxx)37.9 cm³
Section Modulus (Zyy)6.2 cm³
Radius of Gyration (rxx)4.33 cm
Radius of Gyration (ryy)1.52 cm
Related Sections
ISLB 125
125mm × 75mm · 9.9 kg/m
Ixx 366.1 cm⁴ · Zxx 58.6 cm³
Applicable IS Codes
IS 808:2021 — Hot Rolled Structural Steel SectionsIS 2062:2011 — Hot Rolled Structural SteelIS 800:2007 — General Construction in Steel
Frequently Asked Questions
Q.What is the weight of ISLB 100 per metre?

ISLB 100 weighs 7.9 kg per metre as per IS 808. For a standard 6m length, the total weight would be 47.4 kg.

Q.What are the dimensions of ISLB 100?

ISLB 100 has a depth of 100mm, flange width of 75mm, web thickness of 4mm, and flange thickness of 5mm.

Q.What is the moment of inertia of ISLB 100?

The moment of inertia of ISLB 100 is Ixx = 189.6 cm⁴ (major axis) and Iyy = 23.4 cm⁴ (minor axis).

Q.When should I use ISLB 100?

ISLB 100 (Light Beam) is typically used for secondary beams, light-duty beams, and window/door lintels. It provides a section modulus of Zxx = 37.9 cm³, suitable for beams with moderate bending requirements.

Q.How much does a 6 metre ISLB 100 weigh?

A 6m length of ISLB 100 weighs 47.4 kg (0.047 tonnes). Weight formula: 7.9 kg/m × 6m = 47.4 kg.

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