Nortel Networks 1000M warranty Selecting the kit, Seismic Bracing Kits System configuration

Installing earthquake bracing Page 345 of 456

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 61 on page 345. 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 61

Seismic Bracing Kits

Seismic Bracing Kit	System configuration
NT8D64CD	1 module
NT8D64CA	2 modules
NT8D64CB	3 modules
NT8D64CC	4 modules
NT8D64BD	expansion

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.

Communication Server 1000M and Meridian 1 Large System Installation and Commissioning