Westconnex M5

Approximately 9km of new tunnels, motorway to motorway connections to the King Georges Road Interchange Upgrade at Beverly Hills; and a new interchange at St Peters.

Athassel Civil was engaged by CPB Draganos Samsung JV.

The scope of works involved

  • Construction of precast leachate pumpwells and associated pipework.
  • Installation of 6 new Leachate Pump Stations at Saint Peter’s Interchange
  • Rising mains and sump lines connecting to pits
  • Redirect stormwater flow,
  • Installation of 900m 375mm-1800mm RCP.
  • Excavate shore and construct Rocla CDS GPT unit 6.5m deep

Project Info

Client: CPB Draganos Samsung JV

Description: Athassel Civil was engaged by CPB Dragados Samsung JV.

Approximately 9km of new tunnels, motorway to motorway connections to the King Georges Road Interchange Upgrade at Beverly Hills; and a new interchange at St Peters.

Fire Connection M5

  • Supply, weld, excavate, lay and backfill approx 30m of 125mm PE red stripe and 63mm PE blue stripe pipe
  • Supply, weld, and lay above ground approx 365m of 63mm PE blue stripe pipe placed inside 90mm PVC stormwater pipe

Kingsgrove Stormwater – Early works

  • Excavate, Lay and backfill approx 90m of DN750 RCP at a depth of between 3.5-4.0m.
  • Excavate, Shore, pour blinding, place GPT and backfill with flowable fill grout

Kingsgrove Stormwater

  • Excavate, Lay and backfill 30m of DN600 RCP at a depth of under 1.5m
  • Excavate, Lay and Backfill approx. 7m of DN750 RCP at a depth of under 1.5m.
  • Excavate, Install and Backfill od a GPT and Humeceptor
  • Excavate, install and backfill pit 2.16.05 at an assumed depth of under 1.5m.
  • Excavate, form base, install and back with concrete Headwall 2.16.07
  • Excavate, Lay and Backfill of DN750 RCP
  • Excavate, Lay and Backfill of DN1200 RCP

Kingsgrove Compound Connections and Sewer Connection                      

  • Sewer Connection to Site compound
  • Excavate to required depth and core through existing manhole wall
  • Confined space works
  • Install PVC sewer internal pipework,
  • 180m of sewer site reticulation
  • 190m of water site reticulation

M5 Kingsgrove – Noise Mound Sewer  

  • Northern Noise Mound
  • Construct DTC sewer manholes
  • Lay DN225mm sewer mains
  • Extend existing manholes to surface level
  • Grout and make existing sewer line redundant

The complexities of the job included working around live traffic, traffic switches, pedestrian management, working in and around high voltage electricity, high pressure gas and fibre optic cables.