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Backbone Pathways
INTER-BUILDING PATHWAYS
In a campus environment, inter-building pathways are required to connect separate buildings. The few main pathway types used are underground, buried, aerial and tunnel pathways.
Underground pathways consist of conduit, ducts and troughs; possibly including manholes.
Trenching
Boring
Tunnels provide pathways for conduit, trays, wireways or support strand.
Consists of poles, cable-support strand and support system.
i. Building Entrance Facillity
ii. Equipment Rooms
iii. Backbone Pathways
iv. Telecommunication Rooms
v. Horizontal Pathways
vi. Work Areas
Trays
Wireways
Conduit
Cable Support Strand
Poles
INTRA-BUILDING (IN-BUILDING) PATHWAYS
Intra-building backbone pathways are used to place backbone cables between the equipment room and the entrance facility, the entrance facility and the telecommunications room or the equipment room and the telecommunications room. Pathways can be either conduit, sleeves, slots or cable trays.
Locations where building occupants interact with telecommunications devices.
If a telecommunications room can not be vertically alligned with the one above or below, or if a room cannot be vertically aligned with the entrance facility room, a horizontal backbone pathway is used to connect them.
Installation of horizontal cabling from the work area outlet to the telecommunications room.
A system of rectangular distribution and feeder ducts or a network of raceways embedded in concrete.
• Distribution ducts are those ducts from which the wires and cables emerge to a specific work area.
• Feeder ducts are those ducts which connect the distribution ducts to the telecommunications room.
Include electrical metallic tubing, rigid metal conduit and rigid PVC.
-Telecommunications outlet locations are permanent
-Device densities are low
-Flexibility is not a requirement.
-The usable floor area to be served is greater than 1000 m2.
-The length of horizontal distribution cable required to reach the work area is greater than 90 m2.
Conditions for ceiling distribution systems include the following:
• Inaccessible ceiling areas (lock-in ceiling tiles, drywall, plaster) are not to be used as distribution pathways
• Ceiling tiles must be removable and placed at a maximum height of 3.4 m above the floor.
• There should be a suitable means for supporting cables and wires. They are not to be laid directly on the ceiling tiles or rails.
Telephone Room
Administration Building of Faculty of Engineering and Built Environment
Backbone Pathway
Telephone and Fax Machine
Switch Rack
Makmal Media
Bilik ICT
PTM , UKM
Ethernet Port
Horizontal Pathway
Vertical Pathway