Magnetic shielding by large metallic structure in modern buildings

In high-rise commercial buildings, the concept of raised floors and metal decking is often adopted for various purposes. The shielding performance of these metal structures is of interest. The paper presents an experimental investigation into the shielding properties of raised floors, metal decking and large flat sheets applied in buildings. It is recognized that the shielding performance depends on various parameters, such as shielding material, source orientation, shield thickness, and distance from the shield. These factors should be carefully looked at when magnetic shielding is considered to mitigate background magnetic fields.