Brian Perry Civil

CATEGORY 2: Projects with a value between $1 million and $10 million

Runway success

The 350mm thick concrete slabs on a taxiway at Auckland airport airfield had to be replaced due to damage from increased aircraft loading and traffic movements. The client was Auckland International Airport and the project was called the Taxiway A1A Concrete Slab Replacement. Damaged to existing 350mm thick concrete slabs at the eastern end of the airfield, an area of approximately 9800 square metres, was identified for replacement with new 500mm thick concrete slabs. The contract was awarded to Brian Perry Civil and involved 3430 cubic metres of excavations; 1960 cubic metres of cement treated basecourse; CATEGORY 5000 cubic metres of concrete pavement; 2 FINALIST and 1350 metres of trenching for electrical ducting. Work started January 19 2016 and finished March 21. The works were part of a three-year contract Brian Perry Civil has with AIAL as the contractor is the main contractor for the works with Beca, the consultant engineer for airfield improvement and replacement works.

“AIAL decided to place these works in the second year of the three-year contract to allow appropriate lead-in time and planning for the client, consultant and contractor’s project team to meticulously examine each construction activity against the design and airfield operational constraints,” says the company.

“Following taking possession of the site, the existing concrete was broken up and removed by Ward Demolition. Higgins was then brought in to excavate the subbase and paver lay a new cement treated basecourse.

“Once the stabilised basecourse had cured, formwork was setup and concrete laid in 12 metre wide bays and up to 750 cubic metres in each shift.”

The tight programme constraints necessitated 24 hour work, especially during concreting. The construction programme therefore had a completion date of March 31.

Work was completed on March 23, eight days ahead of the ultimate project completion date. In addition joint sealing was also completed, an activity not originally planned to happen until after the taxiway was handed back to the airport. l