The existing Bay of Islands Hospital is located on the existing pre-1920’s hospital site in Kawakawa. The hospital provides comprehensive medical, maternity and paediatric services, as well as a substantial community health service to the people in the Bay of Islands and the Mid-North. The latest two-storey addition comprises a new Accident and Medical Department, X-ray and consultation facilities (bottom level) and an in-patient Ward (top level). The new building is tied into the existing hospital buildings through various access points around its perimeter. The design developed through intensive consultation with the clinical users and the Board’s facility management team. Early contractor involvement enabled robust consideration of options for building form, services strategies, construction methodology and materials to maximise value.
CLIENT BRIEF/PROJECT CHALLENGES
A significant challenge of this project was maintaining the operation of the existing hospital building while the new building works were undertaken. Demolition works were required to make space for the new building. A separate enabling works package was undertaken to stabilise the remaining portions of partly demolished buildings. Minimal documentation was available for the existing structures and so WSP had to develop bespoke stabilising solutions for the conditions found on site. In addition to maintaining the structural stability of the existing hospital buildings, WSP worked with the Client to develop services proposals to maintain services continuity while the demolition works were ongoing. With a constrained budget, we had to look at cost effective solutions to deliver quality services to the building.
WSP’s Solution for the structural design was perimeter precast concrete walls with an internal structural steel gravity frame. The services fitout includes ducted air and exhaust systems with high wall and cassette AC units for the majority of spaces. Nurse call systems, body protected electrical systems, medical gases and other hospital fitout elements were incorporated throughout.
This solution allowed the perimeter walls to act as both shear walls and fire walls and reduced construction times through off-site fabrication. The services solutions adopted focused on providing best value, ensuring that costs were kept affordable to the client while delivering appropriate services for an inpatient building of this nature.