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ISLB 550

Light Beam78.4 kg/m

Indian Standard Light Beam — IS 808:2021 | Depth 550mm × Width 190mm

Cross-Section (mm)
550190tw=9.9tf=15
Weight Calculator
78.4 kg/m × 6m × 1 =
470.4kg
0.470tonnes
Section Properties
Depth (D)550 mm
Width (B)190 mm
Web Thickness (tw)9.9 mm
Flange Thickness (tf)15 mm
Weight per Metre78.4 kg/m
Cross-sectional Area99.8 cm²
Moment of Inertia (Ixx)59348.6 cm⁴
Moment of Inertia (Iyy)1326.6 cm⁴
Section Modulus (Zxx)2158.1 cm³
Section Modulus (Zyy)139.6 cm³
Radius of Gyration (rxx)24.38 cm
Radius of Gyration (ryy)3.64 cm
Related Sections
ISLB 500
500mm × 180mm · 67.8 kg/m
Ixx 43239.5 cm⁴ · Zxx 1729.6 cm³
ISLB 600
600mm × 200mm · 89.9 kg/m
Ixx 79983.3 cm⁴ · Zxx 2666.1 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 550 per metre?

ISLB 550 weighs 78.4 kg per metre as per IS 808. For a standard 6m length, the total weight would be 470.4 kg.

Q.What are the dimensions of ISLB 550?

ISLB 550 has a depth of 550mm, flange width of 190mm, web thickness of 9.9mm, and flange thickness of 15mm.

Q.What is the moment of inertia of ISLB 550?

The moment of inertia of ISLB 550 is Ixx = 59348.6 cm⁴ (major axis) and Iyy = 1326.6 cm⁴ (minor axis).

Q.When should I use ISLB 550?

ISLB 550 (Light Beam) is typically used for secondary beams, light-duty beams, and window/door lintels. It provides a section modulus of Zxx = 2158.1 cm³, suitable for beams with moderate bending requirements.

Q.How much does a 6 metre ISLB 550 weigh?

A 6m length of ISLB 550 weighs 470.4 kg (0.470 tonnes). Weight formula: 78.4 kg/m × 6m = 470.4 kg.

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