High technology raised floors
Vibration test on systems for raised technical floors
The tests were carried out by the EUCENTRE – European Center for Training and Research at Earthquake Engineering in Pavia, on systems with slightly different details but with the same size in the plan (3×3 panels). The system has been reproduced by means of adjustable metal columns with a tube welded to a plate, glued (or screwed) in the lower part to a multilayer wood panel, used as a connection interface. An adhesive based on reactive silane was used for bonding. On the upper plate of the metal column, the FOURxFOUR system was set up, initially in polyurethane and then in polypropylene. The floor was made with panels (600x600x44 mm) in calcium sulphate with porcelain stoneware finishing, bound on the gasket thanks to conical connectors. The test consisted in the application of the seismic excitation at the base of the structure object of the test, in correspondence of the constraint between the metal columns and the multilayer wood panel, rigidly connected to the upper part of the metallic vibrating table. For the tests an accelerometric recording of the Aquila earthquake of 9 April 2009 was used. At the end of the test cycles, the structure and the pavement, subjected to accelerometric tests equal to 4.5 times the earthquake in L’Aquila, did not reported a significant level of damage.
The substructure, the heart of the raised flooring.
The substructure is a crucial technical element for a floating floor. The Kleos system has feet of any height, able to solve any situation, to hide any system up to over one meter in height. They are easy to install, of variable height, with high load capacity and made of anticorrosive materials.