Earthquake Bracing Requirements For Chassis Installed On A Wall In A - Nortel Meridian 1 Planning And Installation Manual

Page 28 of 590 Chapter 3 — System and site requirements
Earthquake bracing requirements for chassis installed on a
wall in a vertical position
553-3021-209 Standard 1.00
The following earthquake bracing guidelines comply with the
requirements for the state of California specifications in the United
States. Requirements may be different in other regions or countries.
To be braced against earthquakes, the Option 11C Mini chassis must
be installed in a vertical wall-mount position.
Note: The earthquake bracing method for the Option 11C Mini does not
guarantee that the system will continue to operate during or after an
earthquake.
Install the chassis on a wall using a piece of 3/4 in. (20 mm) plywood as a
backboard. Secure the plywood to the wall with a minimum of six fasteners.
(Refer to Table 5 on page 29 for a description of the appropriate fasteners.)
Table 4 identifies the maximum acceptable wall height for different types of
stud wall construction in areas prone to earthquakes.
Table 4
Minimum wall requirements – stud construction
Wall Studs
2 in. x 4 in. wooden studs
2 in. x 6 in. wooden studs
3 5/8 in. 20 gauge metal studs
3 5/8 in. 18 gauge metal studs
July 1999
IMPORTANT
CAUTION
Spacing off
center
16 in. or 24 in.
16 in. or 24 in.
16 in. or 24 in.
16 in. or 24 in.
Maximum Height of
Wall
10 ft
16 ft
12 ft
16 ft