Minimum thickness of vertically stiffened web plate according to IS 800-1984

IS 800-1984 is the Indian Standard Code of Practice for General Construction in Steel. It provides guidelines for the design, fabrication, and erection of steel structures.

One of the requirements specified by IS 800-1984 is the minimum thickness of the vertically stiffened web plate in steel structures.

According to the code, the minimum thickness of the vertically stiffened web plate shall not be less than d/200, where d is the depth of the web plate.

Explanation

The web plate is a crucial component of a steel structure that carries the vertical loads and resists the shear forces. The web plate is usually stiffened vertically by adding angles or channels to enhance its strength and rigidity.

The minimum thickness of the vertically stiffened web plate is specified to ensure that it can withstand the stresses induced by the loads and maintain its stability during the service life of the structure.

IS 800-1984 recommends a minimum thickness of d/200 for the vertically stiffened web plate. This means that if the depth of the web plate is d, the minimum thickness of the stiffened web plate should be d/200.

For example, if the depth of the web plate is 500 mm, the minimum thickness of the stiffened web plate should be 500/200 = 2.5 mm.

This requirement ensures that the web plate is strong enough to resist the stresses induced by the loads and the stiffeners are adequately spaced to prevent buckling.

Conclusion

The minimum thickness of the vertically stiffened web plate is an essential requirement in the design of steel structures. It ensures the stability and safety of the structure during its service life. IS 800-1984 specifies a minimum thickness of d/200 for the vertically stiffened web plate, where d is the depth of the web plate.

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