Railway Terrace, Schofields NSW

Project Overview

As part of a major water main relocation project, UEA was contracted to install three crossings beneath significant utilities for OHL-York JV in hard rock ground conditions at Railway Terrace in Schofields, NSW.

Location

Schofields NSW

Geology

Sandstone

Client

OHL-York JV

Length

54 metres over 3 bores

Pipe

900mm & 600mm steel casing

Technique

Thrust boring

Scope of Works

The scope of works involved the supply and installation of 36 metres of DN600 mild steel enveloper pipe in two bores and 18 metres of DN900 from one large launch pit at different grades and alignments, facilitating the installation and connection of DN375 & DN600 SCL pipes. The works consisted of setting up the auger boring equipment at three separate settings from one launch pit. UEA used the McLaughlin auger boring machine with a specially designed tungsten carbide tipped drill head to install the steel enveloper pipes. Ground conditions were consistent with Sydney sandstone with some harder iron stone deposits.

COMPLETION

The project was a success, with UEA completing all bores on the correct grade and alignment and then completing the project within one week of commencement.

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