Lyall Street Apartments is a 23-storey residential tower in Perth, designed by Architectus for Sirona Urban. We are providing structural and civil engineering services for this development, which features a reinforced concrete core and columns with post-tensioned slabs forming the primary structure. The tower includes three basement levels, posing significant engineering challenges due to its location within a high-water table.
The basement must be designed to withstand substantial hydrostatic pressure, necessitating a combination of deep piles and a hydrostatic slab to maintain long-term stability. Achieving a dry basement solution is a critical requirement, and careful monitoring of dewatering efforts during construction will be essential. Until sufficient structural weight is in place to counteract buoyant forces, stability measures must ensure that the basement remains secure.
Lateral stability is another key consideration, as the building’s slender form and eccentric core introduce complexities in resisting wind and seismic forces. We have implemented a strategically positioned core and shear wall system to control lateral movement while optimizing structural efficiency. By refining the placement of these elements, we have achieved a balance between architectural intent and performance requirements.
Our approach integrates structural resilience with efficient construction methodologies, addressing both immediate and long-term engineering challenges associated with this high-rise development.
