The Kahu Development is categorized as a 2 Lot residential project, varying in height from three to five stories, and is situated in the emerging development zone of Long Bay, Auckland. Design Engineers have been contracted to conduct a PS1 design review for the enclosure of the proposed building. This PS1 report is specifically tailored for BC1, addressing below-grade waterproofing. The plan involves implementing a partial Tanked system for Building A on Windlass Street and a fully tanked system for Building B using a Nuralite product. The basement structure predominantly includes proposed Precast walls, concrete slabs, and the application of a waterproofing membrane.
It's noteworthy that the maximum height of the building exceeds the prescribed limit of 10m and falls outside the scope of E2/AS1. Consequently, an authorised signatory is required to engineer and endorse the enclosure systems. The building is assigned an importance level of 2, and a design life of 50 years has been designated for the overall structural integrity.