Singapore legislation
Regulation 77E
of Civil Aviation Authority of Singapore (Changi Airport) By-laws 2009
Regulation 77E
Use of approved service corridors, service ducts or other associated structures for underground installations
Subregulation 1
Paragraph (2) applies before an earthworks permit holder installs or replaces any underground installation within the airport as part of carrying out earthworks.
Subregulation 2
The earthworks permit holder must propose to the airport licensee the service corridor, service ducts or other associated structures through which the earthworks permit holder intends to lay the underground installation.
Subregulation 3
An earthworks permit holder must only lay the underground installation through a service corridor, service duct or other associated structure that is approved for such use by the airport licensee.