Shielding effectiveness of concrete buildings

The prediction of the shielding effectiveness of concrete structures is a fundamental aspect of the architectural design phase of purpose built control centres. These buildings designed with a functional requirement to house sensitive control equipment; malfunction of such equipment may lead to loss of life and impact on revenue service. In this paper, a simple analytical approach is proposed to influence the design of buildings such that the structure provides adequate attenuation to hostile electromagnetic ambient and potential electromagnetic pulses. Comparison with numerical methods is provided. The effect of moisture content on the shielding effectiveness of a concrete wall is outlined.