By GWE Consulting Engineers
Client: Private Developer
Location: MacKelvie Street, Grey Lynn, Auckland
Project Value: Undisclosed
Sector: Environment, Land Development, 3 Waters
Completion: On-going
PROJECT DESCRIPTION
This inner-city redevelopment project involves the demolition of the existing buildings and structures on site and the construction of an attractive, 8 storey, mixed-use development with basement car parking.
A Detailed Site Investigation (DSI) and a conceptual site model (CSM) was prepared outlining potential contamination sources, determined land requirements in accordance with the NES-CS and provided recommendations with respect to site management in relation to ground contamination.
To establish the basement and construct a level building platform requires deep excavations at the site. Approximately 1,000m3 of earthworks is proposed where excavation depths will vary between 1.3 m and 4.7 m. Subgrade conditions range between very stiff residual soils and moderately weathered ECBF rock (cemented).
The site is in a topographical depression area. An overland flow path draining an upstream catchment traverses the site, filling the depression area before spilling on to MacKelvie Street and flowing downstream. A flood model was prepared and a pre and post flood hazard assessment was completed that demonstrated there was no downstream effect from partially filling the depression area. An innovative solution was found to realign the OLFP around the new development and protect the basement car park from flooding.
The provision of infrastructure to service the development has been investigated and analysed. The work has demonstrated that site can be adequately serviced by extensions to existing water, wastewater and stormwater networks.
SERVICES PROVIDED
GWE Consulting Engineers is a well regarded, multi-disciplinary engineering consultancy operating throughout New Zealand.
The company provides geotechnical, civil and three waters’ (wastewater, stormwater and potable water) and environmental engineering services to governmental, industrial, commercial, developer and private clients.
We work in close association with leading architectural, surveying and project management firms as part of a larger design team providing thought leadership and innovative designs on major or groundbreaking projects.
GWE Consulting Engineers is committed to collaborating with our clients, design partners and regulators to deliver holistic solutions that endure beyond the life of the project.
Our services are consistent with sustainable practice, modern methods of construction and contemporary environmental objectives and deliver to our clients, economic and practical solutions. To understand more about our work, take a look at our experience