Superdome Servers - I/O Expansion Cabinet Guide, Fifth Edition

Appendix B
Site Requirements
Facility Characteristics
211
Average Floor Loading
The average floor load value, defined in Table B-1, 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 IOX cabinet 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 IOX cabinet.
Based on specific information provided by Hewlett-Packard, Tate Access Floors has recommended its Series
800 all-steel access floor with bolt-together stringers and 24 in. (61.0 cm) by 24 in. (61.0 cm) floor panels.
Table B-2 lists specifications for the Tate Access Floors Series 800 raised floor system.
Live load The load that the floor system can safely support. Expressed in lb/ft2 (kg/m2).
Concentrated load The load that a floor panel can support on a 1-in2 (6.45 cm2) area at the panel’s
weakest point (typically the center of the panel), without the surface of the panel
deflecting more than a predetermined amount.
Ultimate load The maximum load (per floor panel) that the floor system can support without
failure. Failure expressed by floor panel(s) breaking or bending.Ultimate load is
usually stated as load per floor panel.
Rolling load The load a floor panel can support (without failure) when a wheel of specified
diameter and width is rolled across the panel.
Average floor load Computed by dividing total equipment weight by the area of its footprint. This
value is expressed in lb/ft2 (kg/m2).
Table B-2 Typical Raised Floor Specifications
Item Rating
Dead load 7 lb/ft 2 (34.2 kg/m2)
Live load 313 lb/ft 2 (1528.3 kg/m2)
Concentrated load 1250 lb (567 kg)
Ultimate load 4000 lb (1814 kg) per panel
Rolling load 400 lb (181 kg)
Rolling load 500 lb (227 kg)
Table B-1 Floor Loading Terms (Continued)
Term Definition