Case Study: BRIDGE GAPS

22 Smart Locks used to avoid collapse

100 year old DN450 sewer pipe reinforced to stop potential collapse under Major Wellington Carrigeway.

 

PROJECT DESCRIPTION

HydroTech was approached by Wellington Water in Wellington, New Zealand to secure a 450mm Earthenware stormwater pipe running under a major carridge way and critical water and telecommunication infastructure in the city’s central business district.

The pipe was installed more than 100 years ago and was failing in a number of sections, causing what is known as “tomos” to form underneath the carridge way.

Smart Lock sleeves were used to create bridges within the Earthenware pipe and directly underneath the critical infastructure, which reduced the risk of furhter pipe collapses or failures and gave valuable time for a permanent solution to be found. Even with major joint displacements and pipe failures along the asset, Smart Lock patches could be installed safely in critical locations.

In total 22, Smart Locks were used for this project, and the risk of pipe failure and creation of further tomos or voids has been significantly reduced. Wellington Water is now installing a new 750mm pipe by tradtional methods as a means of asset replacement.

 

PROJECT DETAILS

Project: Repair damaged sections which were causing flooding
End User:Darebin Council
Contractor:New Plumbing Solutions
Country:Australia
Construction area:Parkland
Installation period:April 2021
Area of application:Storm Water
Number of seals:20
Nominal DN (mm):DN225
Challenge:Working around hard landscaping and Cafe

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