Page 20 of 536
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
Содержание Meridian Meridian 1
Страница 3: ...553 3121 210 Standard 3 0 January 1999 ...
Страница 17: ...xiv Contents 553 3121 210 Standard 3 0 January 1999 ...
Страница 89: ...Page 70 of 536 Chapter 6 Bracing cabinets against earthquakes 553 3121 210 Standard 3 0 January 1999 ...
Страница 97: ...Page 78 of 536 Chapter 8 Installing a new system 553 3121 210 Standard 3 0 January 1999 ...
Страница 107: ...Page 88 of 536 Chapter 10 Installing the system ground 553 3121 210 Standard 3 0 January 1999 ...
Страница 113: ...Page 94 of 536 Chapter 11 Installing the power supply 553 3121 210 Standard 3 0 January 1999 ...
Страница 125: ...Page 106 of 536 Chapter 12 Adding an expansion cabinet 553 3121 210 Standard 3 0 January 1999 ...
Страница 139: ...Page 120 of 536 Chapter 13 Installing the circuit cards 553 3121 210 Standard 3 0 January 1999 ...
Страница 157: ...Page 138 of 536 Chapter 15 Installing and connecting SDI and Ethernet ports 553 3121 210 Standard 3 0 January 1999 ...
Страница 175: ...Page 156 of 536 Chapter 16 Starting up and testing the system 553 3121 210 Standard 3 0 January 1999 ...
Страница 209: ...Page 190 of 536 Chapter 18 Connecting the trunks 553 3121 210 Standard 3 0 January 1999 ...
Страница 323: ...Page 304 of 536 Chapter 21 Installing Hospitality 553 3121 210 Standard 3 0 January 1999 ...
Страница 419: ...Page 400 of 536 Chapter 23 Pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 455: ...Page 436 of 536 Chapter 24 Changing pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 555: ...Page 536 of 536 Chapter 25 Fault locating and clearing 553 3121 210 Standard 3 0 January 1999 ...