Substation 164 is a new 7,867m2 boutique office tower that incorporates the restoration & refurbishment of the heritage listed Shelley’s Warehouse & the adjoining former electrical substation, together with a new 7 level sculptural glass extension.
Built elected to go with the structural steel over concrete for this project, due to the cantilever spans & the complexity of the raking columns on Levels 7 & 8 supporting the glass extension. Additionally, the steel put less dead load on the offset core which resulted in less horizontal flex for the building.
Lower ground floor to Level 5 structure consisted of structural steel columns between slab & soffit to transfer the new build loads directly to the basement, plus welded box plate elements to tie into & strengthen new floor slabs.
Levels 6 through to 13 consisted of composite structural steel, bonded to concrete floors with raking columns, eventually cantilevered to support the new office floors above.
This project utilized the true flexibility of structural steel design & construction for use in both the old & new structures.