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Chapter 3 — System and site requirements
553-3121-210
Standard 3.0
January 1999
— all electric motors
— electrical transformers
Earthquake bracing requirements
The guidelines recommend that the cabinets be mounted on a wall using a
sheet of 3/4 in. (20 mm) plywood as a backboard. The plywood should be
secured to the wall with a minimum of six fasteners. (Refer to Table 3 and
for a description of appropriate fasteners.)
The following table identifies the maximum allowable wall height in
earthquake prone areas for various types of stud wall construction.
IMPORTANT
The following earthquake bracing guidelines conform to the
requirements for the state of California specifications in the U.S.A.
Table 3
Minimum wall requirements – stud construction
Wall Studs
Spacing off
center
Maximum Height of
Wall
2 in. x 4 in. wooden studs
16 in. or 24 in.
10 ft
2 in. x 6 in. wooden studs
16 in. or 24 in.
16 ft
3 5/8 in. 20 gauge metal studs
16 in. or 24 in.
12 ft
3 5/8 in. 18 gauge metal studs
16 in. or 24 in.
16 ft
Summary of Contents for Meridian Meridian 1
Page 3: ...553 3121 210 Standard 3 0 January 1999 ...
Page 17: ...xiv Contents 553 3121 210 Standard 3 0 January 1999 ...
Page 97: ...Page 78 of 536 Chapter 8 Installing a new system 553 3121 210 Standard 3 0 January 1999 ...
Page 107: ...Page 88 of 536 Chapter 10 Installing the system ground 553 3121 210 Standard 3 0 January 1999 ...
Page 113: ...Page 94 of 536 Chapter 11 Installing the power supply 553 3121 210 Standard 3 0 January 1999 ...
Page 125: ...Page 106 of 536 Chapter 12 Adding an expansion cabinet 553 3121 210 Standard 3 0 January 1999 ...
Page 209: ...Page 190 of 536 Chapter 18 Connecting the trunks 553 3121 210 Standard 3 0 January 1999 ...
Page 323: ...Page 304 of 536 Chapter 21 Installing Hospitality 553 3121 210 Standard 3 0 January 1999 ...
Page 419: ...Page 400 of 536 Chapter 23 Pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Page 555: ...Page 536 of 536 Chapter 25 Fault locating and clearing 553 3121 210 Standard 3 0 January 1999 ...