Building comprising at least two vertically superimposed computer rooms 2, 3, 4, 5 each limited by a
peripheral wall 6 and separated from each other by an intermediate floor 7 and which each contain computer cabinets 11 for computer or
electronic equipment 25. The building is characterised in that: each computer room 2, 3, 4, 5 comprises at least one interior wall 10 formed in part or less by the computer cabinets 11 and which separates the interior volume of each computer room into a
hot zone Zc and a
cold zone Zf, since the air cannot flow between the
hot zone Zc and the
cold zone Zf without passing through the computer cabinets 11; each intermediate floor 7, 8, 9 is perforated to allow free circulation of air, all cold zones Zf are superimposed and forming a supply column of
fresh air Ca and all the hot spots are superimposed forming an exhaust column of hot air Ce; the floors 7, 8, 9, the perimeter walls 6 and interior walls 10 are adapted to prevent a direct flow of air between the supply column Ca and the exhaust column Ce, and the building comprises
fresh air means 20, 30 in the supply column Ca and means for evacuating 23, 30 hot air from the exhaust column Ce.