Specifications

2-9
Fitting out the Premises
Computer Room Floor
Primary Floor
The primary floor must be sloped and equipped with a drain.
Primary floor resistance must be > 600 daN/m .
The primary floor and wall risers located at raised floor level must be coated with dustproof
paint.
Raised Floor
CAUTION:
A raised floor compliant with Standard NF P67 103-1 and 103-2, dated April 1993 is
mandatory for the Bull NovaScale Servers.
A raised floor allows even distribution of the overall system load and provides a plenum
space for cabling and air-conditioning.
The structure must be reinforced by intermediate crossbeams or T-beam section spars,
according to slab cutouts and the hardware load.
The raised floor structure (at the actuator base) must be meshed with >
20mm section, flat,
tin-plated copper braiding. See Figure 15 Raised floor equipotentiality method, on page 4-6.
The raised floor must be made of 60 cm x 60 cm, removable, interchangeable, square slabs
supported by adjustable flat-head actuators (18 per silo), fitted with electrically conductive
rubber pads.
Raised Floor Features:
• resistance: > 500 daN/m
2
,
• temporary resistance: > 2.5 kN/m
2
,
• slabs: galvanized steel or aluminium trays, inside which high density particle boards are
bonded and covered with plastic laminate or vinyl flooring,
• volume resistivity: 10
4
- 10
10
ohms,
• plenum space: > 30 cm to allow the correct circulation of conditioned air,
• slab surface flatness must be checked by laser.
Figure 8. Raised floor cross-section