Murphy Surveys
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DART

DART
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DART INTERCONNECTOR UNDERGROUND

Key Facts : DART Interconnector Underground Utility Survey

Client: Iarnrod Eireann
Sector: Public
Value: €450,000
Survey Type: Site Control, Underground Utility Survey, Ground Penetrating Radar Surveys.
Area: 50 hectares
Resources: GPS, Ground Penetrating Radar, Electromagnetics, Slit Trenching.
Project Duration: 10 months

Client Requirements:

The purpose of the survey was to facilitate the development of the design of the relocation of existing utility services which may be required to be diverted or protected during the course of the DART Underground Construction Works. The results of the survey were also used as the basis for the structural design of the stations and access/ventilation shafts to the DART Underground. Subsequent to the completion of detailed design, the results of the survey will be relied on for the estimation of quantities for the main Contract for the DART Underground Project.

Murphy Surveys Solution: Involved the following:

- the investigation and mapping of all surface and subsurface utilities and utility apparatus, using non-destructive methods;
- the investigation and mapping of all surface and subsurface utilities and utility apparatus within building structures and basements, using non-destructive methods;
- liaison with the various Authorities, Iarnród Éireann, and landowners;
- the implementation of temporary traffic management arrangements;
- the confirmation and verification of the results of the survey by means of the excavation of a number of slit trenches within the scope of the survey boundary,
- the preparation of digital survey drawings and a utilities database.

Murphy surveys carried out all works on site during the night. This involved implementing a traffic management plan, obtaining work permits form DCC, Irish Rail and Veolia Transport and liaising with various utility providers and an Garda Siochana.

The survey objective was achieved utilising various techniques such as sonde surveys, radio detection surveys, ground penetrating radar surveys and any existing records that were available.

 
3D LASER
SCANNING / BIM
line HYDROGRAPHIC
SURVEYS
line GEOPHYSICS/ UTILITIES line MONITORING line LAND
SURVEYING
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