RadioFrame Networks Inc DH2 Manuel D’Utilisation
RadioFrame System
Pre-Installation
RFN_3.1 Beta
31
braided wire rope. Wire rope anchors are then secured to ceilings joists. The
benefit of this type of installation is that racks are allowed to sway within limits
but can't fall over.
benefit of this type of installation is that racks are allowed to sway within limits
but can't fall over.
•
Cabinet designs with wide footprints can be used to help prevent cabinets
from tipping over.
from tipping over.
•
Columns of cabinets stacked and bolted back-to-back present a very stable
and wide footprint. The bottom cabinets shall still, however, be bolted to the
floor for complete security.
and wide footprint. The bottom cabinets shall still, however, be bolted to the
floor for complete security.
•
Some cabinets can be outfitted with outrigger-type support legs to prevent tip-
over. These outriggers alone do not provide adequate earthquake protection,
but are typically adequate if the cabinet is bolted to the floor.
NOTE: If a rack is seismic rated, any add-on aftermarket equipment or
equipment that is not seismic rated will render the overall package as not
being seismic tested and certified as a unit. Therefore, the unit would no
longer be considered as seismic rated.
over. These outriggers alone do not provide adequate earthquake protection,
but are typically adequate if the cabinet is bolted to the floor.
NOTE: If a rack is seismic rated, any add-on aftermarket equipment or
equipment that is not seismic rated will render the overall package as not
being seismic tested and certified as a unit. Therefore, the unit would no
longer be considered as seismic rated.
•
When bolting down to computer floor, be sure to anchor all the way to the
subfloor.
subfloor.
•
Columns of cabinets must be supported, though not rigidly. Rigid mounting
will result in extreme vibration and resultant mechanical failure during an
earthquake. Semi-rigid mounting is preferred. Semi-rigid
will result in extreme vibration and resultant mechanical failure during an
earthquake. Semi-rigid mounting is preferred. Semi-rigid
bracing
is
defined
as
bracing which allows a measurable amount of movement.
•
Some computer floors lose mechanical integrity if several panels are
simultaneously removed. This could lead to equipment floor collapse during
at earthquake. The flooring manufacturer shall be consulted for floor removal
procedures.
simultaneously removed. This could lead to equipment floor collapse during
at earthquake. The flooring manufacturer shall be consulted for floor removal
procedures.
•
Equipment shall be stabilized by a top support. This is critical in preventing a
column of equipment from toppling, causing injury to personnel. The footings
cabinet columns and racks shall be bolted to the floor as appropriate, using
concrete anchors. Sometimes the cabinet columns are placed on C-channel
tract or wooden pedestals.
column of equipment from toppling, causing injury to personnel. The footings
cabinet columns and racks shall be bolted to the floor as appropriate, using
concrete anchors. Sometimes the cabinet columns are placed on C-channel
tract or wooden pedestals.
•
Cables and transmission lines should not be installed rigidly, and without
strain relief. Make broad service loops.
strain relief. Make broad service loops.
•
Lighting fixtures should be prevented from swaying by the addition of one or
more guy wires. A fluorescent lighting fixture in particular, can be very
dangerous if allowed to swing against a wall or equipment racks, shattering
and spraying broken glass below. Fluorescent lighting fixtures shall have
more guy wires. A fluorescent lighting fixture in particular, can be very
dangerous if allowed to swing against a wall or equipment racks, shattering
and spraying broken glass below. Fluorescent lighting fixtures shall have
protective
lenses or protective plastic sleeves that cover the fluorescent tube,
preventing broken glass from falling on occupants.
•
Storage cabinets shall be secured to the wall to prevent upset. Storage
cabinets shall also have closable, secured doors to prevent contents from
spilling during an earthquake.
cabinets shall also have closable, secured doors to prevent contents from
spilling during an earthquake.