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Cranbourne, Merinda Park station


Southern Eastern Program Alliance / Uptrack


40mm, 50mm , 63mm, SDR11. while 125mm SDR 13.6 and 180mm SDR 13.6


Clay geology with rock at deeper inverts


Total 1,619 metres

Bore lengths per location varied between 48 meters to 280 meters in length, from point to point.

Each bore essentially parallel to each other however inverts varied in order to  construct in a contained surface area of the rail corridor

Conduit configurations range from 10 conduits to 4 conduits of various conduit sizes being 40mm, 50mm, 63mm, SDR11. while 125mm SDR 13.6 and 180mm SDR 13.6 as per required design.

As a result, bore diameters varied from 300mm up to and including 600mm as required for installation of conduit configurations.

Project Value:
Over 5 locations on going

A total length of 1,619 mtrs of bores were completed prior to programmed delivery dates to design of a variety of lengths and diameters


  • Predominantly Clay geological conditions, Rock encountered at deeper inverts
  • Restricted zones
  • Stakeholder requirements / constraints required high level planning and controls in consideration of being a high density residential zones

Number of ppl required / team:

Average team of 6 personnel

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Coordination and planning the construction and delivery of 4 required bores during an occupation commencing 9.00 pm in the evening on a 24/7 program until completed

1 x 450mm bore – 66 mtrs

1x 350mm bore – 66 mtrs

1 x 350mm bore – 102 mtrs

1 x 350mm bore – 102 mtrs

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Challenge was the management of waste produced during the night shifts so the drilling and installation of required conduits were not delayed.

Skills, knowledge, experience and planning by the team resulted in delivery as per design.

Highlight- Delivery well before program timelines, knowing all the planning and hard work resulted in a positive outcome

All 4 bores were completed by utilising 2 x Drill teams and resources in a single 12-hour shift.

The following dayshift ensured the site safe, clean and compliant along with the final demobilising of all plant from the site.

Uptrack and SEPA Staff – excellent to work with – preparation and daily support of the highest level which as result permitted prompt positive delivery of required build.

Techniques required, materials required:

Construct using Vermeer D60 x 90 Horizontal Directional Drill

Construct using Vermeer D40 x 55 Long Rod Horizontal Directional Drill.

Digitrak F5  Falcon Tracking system

Defined Mud mix to suit known Geological Conditions

Adequate water and Mud mix resources to permit consistent supply as required upon demand

Ample Vacuum Trucks to ensure smooth transfer of drilling slurry to Tip site without incurring delays to process

Special purpose tooling – reamers

Skilled Team

Precise planning pre commencement

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