What is the primary difference between IS 808 and IS 3954?

IS 808 covers standard structural beam, channel, and angle sections, whereas IS 3954 caters to specific channel profiles intended for general engineering purposes.

Does this standard specify the chemical or mechanical properties of the steel?

No, it focuses strictly on dimensions, mass, and sectional properties. Mechanical properties are determined by separate material codes like IS 2062.

What specific sectional properties are detailed in the standard?

It provides nominal depth, flange width, web thickness, flange thickness, mass per metre, cross-sectional area, moments of inertia, section modulus, and radii of gyration.

IS 3954

: 1991

Hot Rolled Steel Channel Sections for General Engineering Purposes – Dimensions

CurrentFrequently UsedSpecificationBIMStructural Engineering · Structural Engineering and Structural Sections

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This standard specifies the nominal dimensions, mass, and cross-sectional properties of hot-rolled steel channel sections intended for general engineering, machinery bases, and structural applications not covered under standard structural steel codes.

Hot Rolled Steel Channel Sections for General Engineering Purposes – Dimensions

Quick Reference Values

Density of steel assumed for mass calculation7.85 g/cm³

Standard delivery lengths5 to 13 m

Practical Notes

Verify market availability of specific channel sizes before finalizing designs, as some profiles may require large minimum order quantities.

Material grades (like E250 as per IS 2062) must be specified separately as this code only covers dimensional properties.

Sectional properties from Table 1 are directly used for defining custom structural steel sections in finite element software like STAAD.Pro or 3D detailing software like Tekla.