The XBlocPlus units are a unique cost-effective solution for Te Ara Tupua. These blocks are poured in the shape of an ‘X’, which interlock and stack on top of each other to create a seawall with a steeper incline.
Their design reduces the seawall’s physical footprint and impact on the marine environment which meant that the project could use less volume of material at a lower cost compared to a rock revetment. Through this innovation, our team of engineers and ecologists worked alongside iwi artist Len Hetet to combine cultural and environmental design which resulted in Te Ripowai and ecological enhancement to the XBlocPlus unit. These include surface patterns and textures to encourage growth of marine plants.
Te Ara Tupua is the first project where seismic performance has been considered and tested in the design of these units, ensuring the new seawall will be resilient, despite being built over a large active faultline.
