609 Wellington Street

609 Wellington Street is a 30-storey student accommodation tower currently in the design phase, located in the Perth CBD. We are providing both structural and civil engineering services for the development. The structure is a reinforced concrete frame with an in-situ core and a highly slender form, requiring specific measures to control lateral drift within serviceability limits.

Two alternative systems have been proposed for the floor construction: a hollow-core slab system and a post-tensioned slab system. Each has been analysed for compatibility with the architectural layout, construction sequencing, and performance under load. In addition, we have provided design options that eliminate internal columns entirely, allowing for increased spatial flexibility.

The structure has been engineered without transfer levels, enabling a reduction in embodied carbon and simplifying the vertical load path. Foundation design consists of deep piles to accommodate ground conditions and tower loading. The in-situ core is the primary lateral stability element, and has been optimised to resist wind actions while minimising construction complexity.

Our civil scope includes external drainage strategy, pavement levels, and site interface coordination. The proposed structural systems reflect a coordinated approach to design efficiency, construction feasibility, and sustainability objectives within a constrained high-rise urban site.