3.6Geometrical Properties

IS 800:2007, General Construction in Steel — Code of Practice

Last Updated 29 Oct 2026

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3.6.1 General

The geometrical properties of the gross and the effective cross-sections of a member or part thereof, shall be calculated on the following basis:

a) The properties of the gross cross-section shall be calculated from the specified size of the member or part thereof or read from appropriate table.
b) The properties of the effective cross-section shall be calculated by deducting from the area of the gross cross-section, the following:

The sectional area in excess of effective plate width, in case of slender section (see 3.7.2).
The sectional areas of all holes in the section except for parts in compression. In case of punched holes, hole size 2 mm in excess of the actual diameter may be deducted.

IS 800:2007, General Construction in Steel — Code of Practice

Last Updated 29 Oct 2026

Hover any section to copy its link or text, ask Copilot about it, or bookmark it.

The geometrical properties of the gross and the effective cross-sections of a member or part thereof, shall be calculated on the following basis:

a) The properties of the gross cross-section shall be calculated from the specified size of the member or part thereof or read from appropriate table.
b) The properties of the effective cross-section shall be calculated by deducting from the area of the gross cross-section, the following:

The sectional area in excess of effective plate width, in case of slender section (see 3.7.2).
The sectional areas of all holes in the section except for parts in compression. In case of punched holes, hole size 2 mm in excess of the actual diameter may be deducted.