† this grade must also sustain a total load of 11 kN applied equally on four points, each point 25 mm square on a 200 mm x 200 mm square configuration at any point on the system.
* British Council for Offices Guide to Specification 2014
Consideration should be taken regarding use of the raised floor as a working platform during construction, pedestrian traffic in escape routes, main thoroughfares and how furniture / filing cabinets and other heavy equipment will be taken into the building (across the floor) especially if the lower classification is being considered.
Classification by grade is based upon a complete Kingspan system, i.e. panels and under structure.
Performance verification for PSA MUST be by an “approved independent laboratory”.