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Selecting the kit
To select the applicable bracing and anchorage kits for your particular
installation, you must first determine the following site requirements:
•
Identify system configuration (number of columns and modules per
column).
•
Identify specification requirements (BELLCORE or CALIFORNIA
OSHPD).
•
Determine site mounting floor parameters (this information can usually
be found in the engineering building drawings):
– concrete type (hardrock or lightweight aggregate),
– minimum concrete compressive strength (megapascals or psi),
– minimum concrete thickness
First, choose the appropriate module bracing kit using Table 59 on
Select a separate kit for each column of modules. For column expansion
(when an additional module is added to a column which already contains
seismic bracing), use the expansion bracing kit.
Table 59
Seismic Bracing Kits
Seismic Bracing Kit
Note: The NT8D64CD kit contains neither bracing rods nor tie bars
because these are not needed for single-module installations. The
NT8D64BD kit does not contain mounting plates as these are not needed
for column expansion.
Installing earthquake bracing
NT8D64CD
NT8D64CA
NT8D64CB
NT8D64CC
NT8D64BD
Large System Installation and Commissioning
Page 329 of 436
System configuration
1 module
2 modules
3 modules
4 modules
expansion
page
329.
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