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C120-H007-05EN 9
2.2 Buildings
2.2.1 Building structures
Structural considerations for buildings in which server systems are to be installed are
summarized below.
(1) Floor strength
The floor of the building in which a server system is to be installed should be strong
enough to withstand the combined weight of the server and its component devices. An
equipment layout superimposed with weight distributions should be presented to the
building designer or installation engineer as a means of determining whether the
server system can be installed.
a) Base floor strength of the computer room
The base floor loading strength of the computer room including the strength of the
floor itself, beams, and columns should be sufficient to accept the installation of a
server system.
• Loading strength of the floor itself
The base floor of the computer room, like the floor of a general office room, must
have a loading strength of 2.9 kN/m
2
(61 lbf/ft
2
) or greater.
• Loading strength of beam and column
A loading strength of 2.9 kN/m
2
(61 lbf/ft
2
) or greater is recommended for the
beams and columns that support the floor of the computer room.
Although a loading strength of 1.8 kN/m
2
(38 lbf/ft
2
) or greater is recommended for
the beams and columns used to support the floor of a general office room, this could
restrict the equipment layout of large chained devices or heavy devices.
b) Verification by the building designer or the building constructor
Even if the base floor strength of the computer room meets the value suggested
above, the structure of the building, its secular changes, or the location of the server
system may not accept its installation. For these reasons, an equipment layout
superimposed with weight distributions should be presented to the building designer
or the building constructor as a means of determining whether the server system can
be installed.
c) Rooms used to install heavy devices
Power supply rooms and media storage rooms may require reinforcement even
when they provide a loading strength of 2.9 kN/m
2
(61 lbf/ft
2
).