/ Case Studies

/ Recent Projects

Our work is out of sight, but never out of mind.

The following projects are a showcase of our capabilities and approach to what we do.

Park Road Rising Main, Hastings

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Client Name

/ Timeframe

April 2019 – October 2019

/ Project Cost

$1.5m

/ Details

Installation of a 280mm rising main running from the Park Road/ St Aubyns Street intersection to the Willow Park/ Victoria Street intersection.

/ The Challenge

This was Drainways first major job as lead contractor to Hastings District Council.

One of the initial challenges was determining the potential for underground service clashes. This required potholing two metres deep to find service locations and then plotting these with GPS to provide council engineers with coordinates for their modelling to ensure the rising main didn’t clash with these existing services.

The project also included a 30-metre section of directional drilling that required two drill shots.

Given the location of this project in a residential area, we also had concerns around traffic disruptions and making sure residents had access to their houses. This meant working outside driveways while residents were at work and completing the job before they arrived home. To keep residents informed, we also did letterbox drops outlining details of the job, timing and a contact phone number for the Drainways Project Manager running the job.

/ The Outcome

Our first Council project as lead contractor was a great success. Although it was scheduled to be finished in December 2020, the Drainways team completed the job eight weeks early, well within budget.  Happy engineers, happy Council, happy residents. It doesn’t get better than that.

Gracelands Retirement Village, Hastings

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Client Name

/ Timeframe

8 Months

/ Project Cost

$2.7m

/ Details

Stage One civil infrastructure works for 50 retirement apartments and dwellings.

/ The Challenge

The Gracelands project was our first big commercial job as lead contractor. As you’d expect, this caused a few nerves within the Drainways team. But we took up the challenge with a determination to achieve a successful outcome for our client, Oceania Healthcare, one of New Zealand’s largest owner/ operators of retirement villages.

/ The Outcome

From a drainlaying perspective, the job couldn’t have gone more smoothly. Compaction standards were always exceeded, engineering requirements were met, and all pipes were laid correctly first time.

It takes a great team to be successful on the big jobs, but what was truly remarkable about this project was the collaborative spirit amongst our team of sub-contractors and a willingness from our client to let us get on with job.

Thank you to Oceania Healthcare for believing in us and having confidence we could complete the project to a high standard on time and well within budget.

And thank you to our brilliant team of subbies:

Roberts Electrical
Brookes Builders
Awakeri Drainage
Ian Dick Concrete Contractors
Instant Green
Pro Seal
Osborne Road Markers

Links Road Roundabout Drainage, Hastings

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Client Name

/ Timeframe

February 2018 – April 2018

/ Project Cost

$200k+

/ Details

Installation of storm water drainage at the new Links Road roundabout including concrete culvert pipes, wing walls, sumps and manholes from 225mm up to 1350mm.

/ The Challenge

Pressure from the public and the main client to minimise hold ups on the Hawke’s Bay motorway made this a challenging drainage project that was made even more challenging by a week of very ordinary weather. At 1350mm in diameter, these were some of the largest pipes we have worked with, requiring different methods for setting them in place and connecting together.

/ The Outcome

Having the right equipment on hand helped us stay ahead of the programme from the start. We finished ahead of time, passing all our inspections and pressure tests with flying colours.

St Aubyn Street Sewer Upgrade

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Client Name

/ Timeframe

March – July 2018

/ Project Cost

$550k+

/ Details

Replacing the original 225mm concrete sewer with a new 300mm PVC main at 3.5m deep running down the middle of St Aubyns Street, Hastings.

/ The Challenge

Replacing the sewer main on one of the busiest roads in Hastings calls for next level traffic management, health and safety assurances, management of the constant comings and goings of personnel, trucks and other machinery, and keeping homeowners living on St Aubyns and surrounding streets happy by minimising noise, dirt and disruption.

The upgrade to the main sewer pipe involved the removal of the old pre-cast concrete manhole covers, each weighing 8 tons, and replacing them with plastic Romold manholes. Each lateral had to be replaced from the main to the boundary with new access boxes called ‘rodding eyes’. The sewer remained live throughout the job, which meant over-pumping from manhole to manhole.

/ The Outcome

Avoiding damage to the myriad of other services (gas, power, water, communications) running along and across St Aubyns Street was made easier by the arrival of our new hydro vac truck, Big Red – which enabled us to clear the way around these vital services with no disruption to residents.

West Place Subdivision, Greenmeadows

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Client Name

/ Timeframe

July – October 2018

/ Project Cost

$300k+

/ Details

Installation of new sewer and water infrastructure at the new West Place subdivision in Greenmeadows, Napier

/ The Challenge & Outcome

It’s fair to say that the installation of new sewer and water infrastructure at the new
West Place subdivision in Greenmeadows, Napier, threw up a few surprises for the Drainways team.

First up was the discovery of existing services that were not on the plans. Avoiding a clash between these and the new services meant plans had to be amended, the new services redesigned, and parts of the job re-priced. Drainways assisted council with a number of ideas throughout the rethinking process, including a purpose-designed bypass manhole.

An old leaking water main that had soaked the ground from 100mm below the surface caused the trench to collapse in the midst of installing a 450mm concrete water pipe. After excavating a wider trench and using pumps to move excess water, the team worked quickly to install the new pipes and complete the job ahead of further slumping in the trench.

A very tight right of way close to an existing fence allowed no swing area for our excavators and there was a real possibility the fence would collapse. Using a 13 tonne zero swing excavator and a smaller 5 tonne machine, our boys dug the trench and put in a massive effort to install 70 metres of 300mm stormwater pipe in one day – minimising the time the trench was open and preventing the fence from falling in.

Wilson Road Water Main Upgrade, Hastings

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Client Name

/ Timeframe

November 2016 – January 2017

/ Project Cost

$100K+

/ Details

To upgrade an old section of 250mm steel water main with 250mm PE – including the replacement of valves, hydrants, tees and lateral connections to properties.

/ The Challenge

The water shortage in Havelock North following the e-coli outbreak just a few months before the start of the project coupled with a need for more water pressure to residences during the coming summer months meant that time was of the essence on this project.

Public safety and disruption was also a concern as the work was to be carried out on a main roundabout during a busy time of year.

/ The Outcome

Although the project was planned for completion in January 2017, Drainways got the job done in December 2016.

Te Mata Road Water Main Replacement, Havelock North

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Client Name

/ Timeframe

June 2016 – July 2016

/ Project Cost

$60K+

/ Details

To replace a 100mm asbestos pipe with a new 150mm PVC pipe, including all lateral connections to the boundary.

/ The Challenge

The old asbestos main was constantly bursting and needed replacing right away. Not only was it a danger to the hundreds of school children who walked over it each day, it was also an ongoing headache for the residents it serviced, who could be without water for long periods until it was repaired.

/ The Outcome

Drainways was called in at short notice to fix the problem.
Despite having to fit the job into a hectic schedule, the team put in the extra hours to complete the work in under a month, with minimal disruption to the public or adjoining property owners.

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