Our Projects
Centraus Engineers consider the collaborative approach to building design and construction to be paramount to what we do. 
By listening and being part of the process we always strive to provide what is “needed” and not necessarily what is originally asked for. 
We put significant effort into the coordination of the design with the construction sequencing and ultimately with the use of the building allowing our buildings to have low “life cycle costs”. 
Bespoke architecture and site issues enhance conditions for us to resolve and provide for interesting design possibilities.
By Photographer: P. Stalder - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2543660


37 Anzac Building is a five storey building located in the Auckland’s CBD. Centraus was engaged to provide the structural assessment and detailed design to strengthen the building and add three additional timber floors on top.
The building was originally built in the 1920s as a concrete frame with brick infill building and there was deterioration throughout. Centraus was in charge at multiple phases of the project, including developing a testing program, detailed design for the restoration works and strengthening works.
There were multiple challenges with the project due to the age of the existing building. Centraus provided due diligence and constant communication with multiple parties involved throughout the project helped the client identify several issues early on. This allowed us to achieve a design incorporating multiple systems including steel braced frames and fibre reinforced polymer that efficiently and effectively addressed the building’s deficiencies.


The TSB Building is an eleven storey building located in the centre of Palmerston North’s CBD. Centraus was engaged by Optimum Projects to undertake a Detailed Engineering Evaluation followed by detailed design to improve the building’s seismic capacity.
Critical to the design was the need to alleviate the torsional effects on the existing building. We accomplished this by adding heavily reinforced shotcrete walls to balance the stiffness at the front and the back of the building.
Centraus’s choice of employing high-strength fibre reinforced polymer to improve the capacity and connectivity of the existing concrete slab and concrete members resulted in a very cost-effective strengthening solution. It also significantly reduces the disturbance to the building users during the construction process.


This turn of the century stately home was extensively damaged by the Canterbury Earthquakes from September 2010 into late 2011.
The owners of this home desired to keep the home while also incorporating a more appropriate extensive remodel. The Centraus structural design addressed the differing soils conditions on the site by providing an underlying micropile solution while re-levelling the original 110 year old structure and providing a new modern foundation.
The framing and structure was adapted to create a seamless transition from new to old to make the two indistinguishable to one another.
Our collaborative effort with the owner, architect and geotechnical considerations provided for an efficient design for the retention of a heritage building.


A difficult site right on the waterfront lay vacant many years due to the underlying soils issues.
Using new ground improvement techniques we were able to find a solution to support a few two storey mutliuse buildings. This provided a much needed use benefit to the prime wharf real estate.  The buildings also utilized exposed timber structure as an expressed element in the architecture.  The express use of engineered timber was chosen to minimize maintenance and life cycle costs of the structure while maintaining a unique building envelope for offices and hospitality spaces.
The durability of the timber and steel systems were found to be a good solution for the high seismic and wind loads for which the site was subjected.  The collaboration of Engineering and Architecture was a success that resulted in an award winning facility.


An iconic building in the central business district of Christchurch suffered significant damage during the Canterbury earthquakes.
Based on our assessment and understanding of building performance, a system of seismic strengthening and enhancement is to be implemented.
These new works will increase the building to an equivalent risk of 100% NBS; far exceeding the owner expectations.
This milestone was achieved through our strong understanding of existing building materials, observed and anticipated building performance as well as new complimentary structural systems.