When Auckland Council’s Healthy Waters Department was reviewing the options for embodied carbon reductions for its Greville Road Stormwater Culvert Upgrade, it engaged collaboratively with the contractor (McConnell Dowell) and pipe supplier (Hynds Pipe Systems) through a joint workshop.
Hynds Pipe Systems was able to present variations in pipe designs and its HyndsLC range of low carbon pipes, with the relevant embodied carbon reductions, demonstrated the impact that joint profile changes would have on jacking forces. McConnell Dowell was able to give construction requirements of the jacking pipe for installation purposes and procurement timeline.
By undertaking this process, the team was able to include the lowest carbon option that met the project requirements for material strength, timeframes, and costs under the contract and resulted in 60 tCO2e savings through pipe selection alone.