1300 083 042
Gravity Sewer Amplification
About the project
Pensar was engaged to repair damage to existing gravity sewer pipework which was causing repeated blockages. With the site located within a car park, access was tight with high stakeholder impact.
Location
West Gosford, New South Wales
Client & Duration
Central Coast Council
September 2020 - October 2020
Project Scope
- Excavation and installation of a new gravity sewer with DN225 pipework
- Installation of three new 1050mm sewer manholes
- Installation of a DN400mm 60m micro tunnel, install carrier pipework and grout fill
- Completed two new live sewer manhole connections
- Dewater excavations of ground water
- Restored the car parking area and line marking
Challenges
- Completing the micro tunnel under multiple services including 11kva power cable to a local substation
- Dewatering of all open excavations and meeting discharge requirements
- Site constraints due to the works being completed in an operating car park and business precinct
- Delivery of the project in a short timeframe to meet all stakeholders’ requirements
- Multiple sewer bypasses were implemented to complete critical live sewer connections
Achievements
- Zero incidents during the delivery of works
- Successful delivery of a 60m micro tunnel and installation of new gravity sewer pipework and manholes
- Zero complaints from local businesses or community members due to efficient communication and site management
- Multiple sewer bypasses were implemented to complete critical live sewer connections
- Worked closely with the Central Coast Council to meet project timeframes and deliverables
- Zero sewage spills or environmental incidents
