Storm-water piping construction work

Description

Installation a gravity drainage system to serve the new airfield aprons, parallel taxiway. Drainage system will consist of circa 20 No manholes, varying pipe sizes connecting into a 170 m x 3 m x 2.1 m attenuation chamber, which in turn will be connected to an oil separator and pumping station. The pumping station will pump surface water to a new connection point on the existing surface water system. Due to the construction of the new aprons and parallel taxiway new and amended links are required for the connections to the runway. The works comprise provision of all necessary people, plant, equipment, materials, temporary works and consumables to complete the tie-in works. A new pit and duct system is required to connect the areas of new taxiway and links to the AGL systems. The scope of work within this package will be the pit and duct system which sit in the clear and graded area of the runway connecting into the new pit and duct system being constructed by another contractor. The physical scope of work includes all works necessary to design, supply, manufacture and construct the Airfield Drainage works which includes: — Drainage Drainage scope includes the installation of a gravity drainage system to serve the new airfield aprons, parallel taxiway and amendments to hold 27. The drainage system will consist of circa 20 No manholes, varying pipe sizes connecting into a 170 m long x 3 m wide x 2.1m deep attenuation chamber. The attenuation chamber in turn will be connected to an oil separator and pumping station. The pumping station will pump surface water to a new connection point on the existing surface water system to be located in the region of taxiway Charlie. — Surfacing/ Tie-in works. Due to the construction of the new aprons and parallel taxiway new and amended links are required for the connections to the runway. The works comprise provision of all necessary people, plant, equipment, materials, temporary works and consumables to complete the tie-in works. — Airfield Ground Lighting (AGL) ducting. A new pit and duct system is required to connect the areas of new taxiway and links to the AGL systems. The scope of work within this package will be the pit and duct system which sit in the clear and graded area of the runway connecting into the new pit and duct system being constructed by the Piling and Deck package contractor.