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Safer streets and an attractive neighbourhood to walk, bike and drive in – that’s all on track for a revitalised Woolston Village in eastern Christchurch.
The civil infrastructure for Ferry Road and its intersecting streets will soon be as good as new as a result of a transformation project undertaken by Citycare teams for the Christchurch City Council.
Upgrading this neighbourhood involves a combination of new sewer and stormwater pipes, reshaping and resurfacing the roads, new trees, plants, cycle lanes and footpaths, signalised pedestrian crossings and additional street furniture.
This major renewal project began in July and is expected to finish in April.
Citycare teams are working a mix of day and night shifts to minimise the disruptive impact for local businesses and residents, Senior Project Manager Roading Brian Jackson said.
The wastewater pipes under Ferry Road were installed in 1928 and have reached the end of their life, while the road surface has also deteriorated and needs to be repaired.
The new pipes were addressed first and now the project has progressed to the road surfaces.
Citycare’s roading and landscaping teams are working through the Village, first working on one side of the street then the other.
The extensive traffic management plan involves redirections and road closures to keep the workers and road users safe.
The aim of the transformation is to complement Woolston’s distinctive industrial character by improving the way the village looks and feels for residents and businesses and connecting communities.
The Citycare Water drainage team has replaced the sewer and pipes connecting each house to the main sewer, at times working in three-metre deep trenches surrounded by high fences.
It was a challenging project for the drainage team because the pipes were deep and the soil wet and of poor quality – the team had to ‘dewater’ or suck water out of the ground to make it dry enough to work in.
On one street, they installed a ‘raft’ foundation (large stones wrapped in geotextile material) under the new pipe to make sure it doesn’t sink.
The drainage team also saved a considerable amount of time, money and avoided significant disruption to local businesses by using spiral lining, a non-invasive, trenchless, or ‘no dig’ method of repairing damaged, but still straight, pipes.
Spiral lining involves winding a continuous strip of interlocking PVC from a spool into and around the inside of a damaged pipe. The rotational action feeds the PVC strip through the damaged pipe and the strip interlocks to form the new lining.
Once the lining is cured a robotic cutter travels along the lined pipe cutting holes for the openings to lateral pipes.
Potholing is another technique the teams are using, Brian says. That means digging down to identify the location of underground services before the work progresses.
For example, the discovery of telecommunications cables above the planned location of the new pipe was a challenge.
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