American Audio VELOCITY - REV 4-05 Betriebsanleitung PDF herunterladen (Seite 104)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

DE304.09 9-99 Revision 4 : 05/09/12

Metro Baseline Re-Baseline: 04/29/10

be served by one conduit run. All conduits shall be GRS, minimum one inch

(1"). Conduits shall be routed directly from the junction boxes to the TC & C

room. The conduits shall not pass through a Communications Interface Cabinet

(CIC). No other circuits may be shared in a CCTV conduit.

I. Fire and Emergency Management Conduits

Fire and Emergency Management Conduits shall be embedded GRS conduit for

various types of detectors, sound powered telephones and emergency

annunciation cabinets/panels.

1. Embedded or concealed GRS conduits shall be provided from all Fire,

Smoke, and Heat detector junction boxes to the appropriate CIC or to the TC

& C room. Conduits shall be a minimum of one inch (1"). No other types of

circuits may be shared in a fire/smoke/heat detector conduit.

2. Junction boxes for detectors shall be embedded and located nine feet above

finished floor in a wall. (The Systems Contractor will extend the circuit via

surface mounted conduit to the ultimate detector location).

3. The Emergency Management Panel (EMP) shall be provided with four (4)

three inch (3") conduit and two (2) one inch (1") which shall run directly from

the EMP to the TC & C room.

4. The Command Post (CP) (Subway System only) shall be provided with two

(2) two inch (2") conduits which shall run directly from the CP to the TC & C

room.

9.5.3 Tunnel Conduit/Tray Routing

Subsystem Devices of the same system within tunnel area shall be grouped and

routed to an Area-Junction Box. From this Area-Junction Box, all wires of that

subsystem will share an adequately sized common conduit or tray, for wire

routing to the designated Communications Interface Cabinet (CIC).

1. Conduit or tray routing of Subsystem Devices shall be configured as to

reduce the quantities of single conduits or tray runs from devices to a

Communications Interface Cabinet (CIC) or to the station or tunnel area TC

& C room.

2. Subsystem Devices located in close proximity to the station or tunnel TC & C

room may be grouped and routed directly into the TC & C room. If these

conduits enter the TC & C room from overhead, they shall be located 11'-6"

above the finished floor or 6" above the room cable tray.

3. Conduit or tray routing shall be configured to provide the routing path with

the fewest changes of direction.

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American Audio VELOCITY - REV 4-05 Betriebsanleitung Seite 104