BridgePro Engineering is a leading Tasmanian contractor specialising in innovative and high-quality end-to-end solutions, from concept to construction.

TERHAP HDD Tie-In Sheet Pile Retention Structure

Design, installation and removal of a temporary sheet piled retention structure for HDD tie-in connections on TasWater’s rising main in Launceston.

Sheet piled excavation for TasWater HDD tie-in, Launceston

Project Overview

A $545,000 design and construct package for TasWater, part of the Tamar Estuary River Health Action Plan works.

BridgePro designed and certified a sheet pile box of around 14 m by 6 m and 4.7 m deep, installed the piles with a Movax side-grip vibratory driver and fitted in-house fabricated waler frames as excavation progressed. A redundant 1400 mm steel casing was lifted out during excavation. After TasWater completed the pipe replacement and backfill, BridgePro returned to remove the walers, extract the sheet piles and reinstate the site.

Key figures: Designed sheet pile retention structure, installed and removed in two stages.

Client:
TasWater

Contract type:
Design and Construct

Value:
$545,000

Start:
October 2024

Completion:
May 2025

Location:
Launceston, Tasmania

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