For most raised floor applications, a covering not exceeding the 2kV charge limit is usually sufficient.

There is no requirement for earth resistance for the whole structure. Requirements for earth resistance as per the above list are usually only necessary in subareas e.g. central computer rooms. Seen as a whole, the subject of static electricity is difficult to understand because of the many tests and requirements, a situation arising from excessive earth resistance requirements which were specified in the past.

Low conductivity of less than 10^8 Ω can only be achieved by raised floor manufacturers when using highly conductive coverings, panel materials and adhesives. With regard to construction costs, unnecessary excessive requirements should, therefore, be avoided. It should be mentioned here that corresponding user clothing (conductive footwear) is absolutely crucial. A technically perfect electrostatic floor construction is useless against nonconductive footwear. Damages due to electrostatic discharge in this instance are inevitable.

Source safety guideline for raised floors, AGI worksheet, manufacturer′s recommendations and carpet research institute.