HP Superdome SX2000 Generic Site Preparation Guide, Fourth Edition - Page 24

NOTE: Have a floor system consultant for the appropriate flooring environment verify any floor system under consideration for a server installation. Raised Floor Loading Raised floor loading is a function of the manufacturer's load specification and the positioning of the equipment relative to the raised floor grid. While HP cannot assume responsibility for determining the suitability of a particular raised floor system, it does provide the following guidelines: • Because many raised floor systems do not have grid stringers between floor stands, the lateral support for the floor stands depends on adjacent panels being in place. To avoid compromising this type of floor system while gaining under-floor access, remove only one floor panel at a time. • Larger floor grids (bigger panels) are generally rated for lighter loads. CAUTION: Do not position or install equipment cabinets on the raised floor system until you have carefully examined it to verify that it is adequate to support the appropriate installation. Average Floor Loading The average floor load value is not appropriate for addressing raised floor ratings at the floor grid spacing level. However, it is useful for determining floor loading at the building level, such as the area of solid floor or span of raised floor tiles covered by the server footprint. Typical Raised Floor Site This section contains an example of a computer room raised floor system that is satisfactory for the installation of a server. Based on specific information provided by HP, Tate Access Floors has approved its Series 800 all-steel access floor with bolt-together stringers and 24 inches (61.0 cm) by 24 inches (61.0 cm) floor panels. When the flooring is replaced or a new floor is installed, Tate Access Floors recommends using the Series 1250 all-steel access floor with bolt-together stringers and 24 inches (61.0 cm) by 24 inches (61.0 cm) floor panels to support the HP installation. NOTE: If the specific floor being considered is other than a Tate Series 800 floor, contact the specific floor manufacturer to evaluate the floor. Table 1-4 lists specifications for the Tate Access Floors Series 800 raised floor system. Table 1-4 Typical Raised Floor Specifications Item Dead load Live load Concentrated load1 Ultimate load Rolling load Average floor load 1 With 0.08 in (0.2 cm) of span maximum deflection. Rating 7 lb/ft 2 (34.2 kg/m2) 313 lb/ft 2 (1528.3 kg/m2) 1,250 lb (567 kg) 4,000 lb (1814 kg) per panel 400 lb (181 kg) 500 lb (227 kg) 24 General Site Preparation Guidelines