Southbase was appointed at the concept and feasibility stage of this six-level office building with mixed-use ground floor and commercial offices on the floors above. This commercial building is situated overlooking the Avon River Park in central Christchurch, a few minutes walk from Cathedral Square and the CBD. Engaged in the early stages of the development the Southbase team assisted the client in the selection of a consultant design team and budget, participating in all design phases and consent stages, including negotiation in tenant MCHF and SHF packages, programme and budgets.
Southbase successfully delivered an architecturally designed, iconic building that sets a benchmark for seismic design and sustainability for 3,000sqm in a fast tracked construction time frame. Our work covered all design, construction and integrated tenant fit-out phases.
The structure comprises of a concrete basement supporting a base-isolated, light-weight steel structure above. In order to keep the weight of the building down our team introduced the use of GRC panels to the building’s Western elevation as well as installing a light-weight fully insulated roof. This in turn allowed for cost savings in the basement design.
The building is glassed along the Cambridge Terrace & Gloucester Street frontages with concrete and GRC cladding to its southern and western elevations. The building is equivalent to a 4.5 star NZGBC rating, however our focus during design was to ensure that a whole-of-life approach was taken when assessing capital cost against opex budgets. This is evidenced through the angle placement of each of the façade glass fins to avoid excessive solar gain to each of the floor areas. Assessment of the building performance against the NABERS rating tool will be on-going during the commission and maintenance period.
Seismic design is provided by the placement of Triple Pendulum bearings to the basement columns. Southbase worked with the design engineer and fabricator during early design stages, which meant we were in a position to successfully install the bearings. This has led to Southbase instructing other companies on how to install this type of bearings.
Key Project Facts
Total project value $28M.
Six-level office building totaling c7,000m2.
Equivalent to a 4.5 star NZGBC rating.
Triple pendulum bearing placed at the basement columns.
Delivered on time and on budget.