CJESP – Services Tunnel, CBD, Christchurch

Date: September-October 2015

Client: Ministry of Justice

Engineer: Holmes Consulting Group

Main Contractor: Fletcher Construction Ltd

PT Subcontractor: BBR Contech

The Christchurch Justice and Emergency Services Precinct brings together all justice and emergency services in one purpose-built, leading-edge precinct in central Christchurch.

The precinct, made up of three buildings – the Justice Building, the Emergency Services Building and a car park for operational vehicles, is located in the central city block bordered by Colombo, Tuam, Durham and Lichfield Streets in Christchurch’s central business district.

An estimated 2,000 people will work in or use the 42,000m2 precinct daily. At the peak of construction, 500-600 people will be working on site each day.

It is the largest multi-agency government co-location project in New Zealand’s history and the first major public building to be built in Christchurch by the government since the earthquakes of 2010 and 2011.

BBR Contech were engaged to supply, install, stress and grout 4 № Macalloy 1030 Grade 40mm tendons over the 54 metre length of the precast services tunnel comprising of 34 № individual precast units 2m x 2m x 5m. The Macalloy tendons were stressed to 907kN or 70% UTS using a 150T hydraulic jack once all units were in position.

The whole site is to be operational by Mid 2017.