G & T Construction Ltd is a privately owned Civil Construction company based in Canterbury. The company was formed in 1994 and has grown steadily since, completing a variety of contracts for local Councils and private customers.
Our aim is to deliver the highest standards of workmanship and to maintain excellent working relationships with our customers, engineers and sub-contractors. All projects undertaken by G & T Construction are managed by our own team of experienced personnel. This includes the design, costing and on site supervision of all work undertaken.
Our staff are supported by a modern fleet and current market civil construction machinery and equipment with a company policy of minimal reliance on hired plant. This plant is used in house on our own contract work, and available for hire on a contract basis or hourly terms.
G & T Construction have an excellent record in regard to Work Place Health and Safety and hold a Green SiteWise Certificate, we have an ongoing commitment to training and education within the workplace.
The company has a practical and thorough Health and Safety Management Plan in place with regular feedback and input from staff to ensure safety issues are addressed and resolved quickly. G & T Construction operate a Quality Management System conforming to AS/NZS ISO 9001:2015 to ensure all work is completed to specification and the required standards are met.
As part of the on going plant maintenance at the Christchurch Wastewater Treatment Plant, G & T Construction have been awarded a contract to carry out repairs to existing plant channels, many of which have not had any maintenance since they were constructed in 1957.
The repair work involves the removal and reinstatement of the concrete channel roof complete with HDPE liner and the construction of new lined wall concrete down below the operating level of the channel.
As these channels are all in service and often there is no alternate route for the plant effluent, a new bypass channel was constructed to allow flows to continue around the work site.
This contract involves the construction of a new weir structure within the existing Oxidation Pond toe drain. A sheetpiled and dewatered excavation was required to install the new weir in conjunction with a cofferdam and over pumping of the flow witihn the toe drain.
We have begun a contract to remediate two Sludge Lagoons at CWTP that have suffered extensive damage in the Christchurch earthquakes.
The lagoons were part of the original Waste Water Treatment Plant at Bromley and date back to the early 1900's. One lagoon had a mixing tank built in it in 2005 and the other was used for vacuum tanker dewatering during the earthquake rebuild.
The dividing wall between the sludge lagoons and the mixing tank were both demolished and the waste concrete was crushed for backfill on site.
One lagoon is to be filled to ground level for a future gas tank installation and the other lagoon is to be retained for emergency discharge of digested sludge.
The contract includes the construction of a new water tight concrete cell within the existing lagoon area.