Client: Insituform Pacific Pty. Limited

End Client: Willoughby City Council

Location: High St and Gorman St, Willoughby
Date: 22 July- 7 August 2019
Value: $250,000

Project Details:

The Willoughby storm drain that require repair is a forty meter box culvert thats 1220mm x 1220mm. Before construction on the tunnel could begin the sandstone floor had to be levelled and three cubic  meters of sandstone removed. The  stainless steel reinforcement was tied into the existing sandstone invert with 12mm dowel bar. The floor was poured in two twenty meter sections to form a dry weather channel. Triaxial consulting were engaged for the structural design of the repairs to the existing soffit.

Works comprise of:

  • Confined Space Entry
  • Water Diversion
  • Demolition
  • Steel Fixing
  • Concrete Pumping

The works were performed in a sensitive residential area, which required thoughtful planning and liaising with willoughby council and residents. The works were successfully competed with 100% safety record and met with all the design requirements.


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