Building Construction Handbook, Eighth Edition

(Nancy Kaufman) #1
Electronic Installations † in addition to standard electrical and
telecommunication supplies into buildings, there is a growing
demand for cable TV, security cabling and broadband access to the
Internet. Previous construction practice has not foreseen the need
to accommodate these services from distribution networks into
buildings, and retrospective installation through underground
ducting is both costly and disruptive to the structure and
surrounding area, particularly when repeated for each different
service. Ideally there should be a common facility integral with new
construction to permit simple installation of these communication
services at any time. A typical installation will provide connection
from a common external terminal chamber via underground ducting
to a terminal distribution box within the building. Internal
distribution is through service voids within the structure or
attached trunking.

Electronic Communications Installations

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