Otahuhu East Branch Sewer
Client
Watercare Services Ltd
Client Project Manager
Roy Schultz
Engineer to the Contract
Tim Munro
Engineer’s Representative
Ken Chung
Design Engineer
Harrison Grierson
Description
The project involved the installation by directional drilling of a twin siphon (250OD & 200OD HDPE) pipelines under the Tamaki Estuary, construction by microtunnelling of a 300NB pipeline and associated precast and insitu concrete chambers.
A new pipe bridge spanning 60m across the Tamaki Estuary required construction of a temporary working platform across the mangroves to provide access for piling rigs and pipe installation.
Expertise
- Insitu concrete chamber construction
- directional drilling (siphon)
- microtunnelling
- HDPE welding
- piling
- drainage
