Gunnedah Aerodrome, New South Wales, Australia

ACG performed as the Head Contractor for this Project. Works included:

• Pavement refurbishment to the full extent of the primary sealed runway (RWY11/29), main taxiway and apron.
• Stormwater drainage included grading in and around the runway strip, apron and taxiways to existing pits and/or existing open unlined drains.
• Demolition of mid turning node on primary sealed runway (RWY11/29).
• Flank / Shoulder regarding and line marking compliant with MOS 139 as applicable for the airport Code to all pavement areas.
• New airfield lighting system

Project Capital Cost: $7.5m

Head Contractor

Unsuitable subgrade material – ACG conducted a proof roll of the stripped surface of the runway and found numerous soft areas where the subgrade was being pumped up into the gravel pavement. Due to the organic black clay CBR value, initially, ACG could not construct the pavement as per the requirement. So, the existing granular material was removed and stabilised the subgrade with 3% lime to a depth of 300mm. Once stabilised, the existing granular material was placed over the stabilised subgrade.