HP Management LAN Blade for bh7800 Site Preparation Guide, Second Edition - HP - Page 32

General System and Facility Guidelines Environmental Factors NOTE An appropriate floor system consultant should verify any floor system under consideration for a HP 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 Hewlett-Packard cannot assume responsibility for determining the suitability of a particular raised floor system, it does provide information and illustrations for the customer or local agencies to determine installation requirements. The following guidelines are recommended: • 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 any equipment cabinets on the raised floor system until you have carefully examined it to verify that it is adequate to support the appropriate installation. Floor Loading Terms The table below defines floor-loading terms: Table 2-1 Floor Loading Term Definitions Term Dead load Live load Concentrated load Ultimate load Rolling load Average floor load Definition The weight of the raised panel floor system, including the understructure. Expressed in lb/ft2 (kg/m2). The load that the floor system can safely support. Expressed in lb/ft2 (kg/m2). The load that a floor panel can support on a 1-in2 (6.45 cm2) area at the panel's weakest point (the center of the panel), without the surface of the panel deflecting more than a predetermined amount. The maximum floor panel load that the floor system can support without floor panel(s) breaking or bending.Ultimate load is load per floor panel. The load a floor panel can support when a wheel of specified diameter and width is rolled across the panel. Computed by dividing total equipment weight by the area of its footprint. This value is expressed in lb/ft2 (kg/m2). Cooling Requirements Air conditioning equipment requirements and recommendations are described in the following sections. Appendix A, "System Specifications and Requirements," summarizes air conditioning requirements for this HP server. 32 Chapter 2