Case Study 2
Western Sydney International (Nancy Bird-Walton) Airport
Western Sydney Airport Corporation (WSA Co.) is implementing Building Information Management (BIM) modelling for the Western Sydney Airport to enable significant time, cost and quality improvements for the delivery of significant airport infrastructure.
These BIM processes will provide WSA Co. with an approach that allows digital information to become a key enabler of stakeholder engagement, decision making, improved asset knowledge, capability, and capacity planning.
GHD has been engaged to produce a Reference Design for Packages 1C (Airside) and Package 3 (Landside) for the 10 Million Annual Passenger (10 MAP) capacity that is capable of incremental growth to 82 MAP ultimate capacity with the relevant safeguard in the site-wide elements. Together with the reference design, GHD is preparing a BIM Execution Plan (BEP) and model to map these requirements. DCWC is working closely with GHD verifying quantities derived from their BIM Model, measuring additional quantities in conjunction with their advice, and expanding on data derived from the BIM Model to provide quantities for components below the ground that cannot reasonably be shown in the model. These joint activities are assisting GHD, and therefore WSA Co., in identifying any discrepancies between the BEP, the client requirements and the Reference Design Documents.
This process has clearly identified the need for both BIM Modelling and human input to ensure overall integrity of the model, consistency between the BIM Model and the design documentation, and accuracy of data. It also highlighted deficiencies in the current estimating software used by DCWC (Cost X) to measure quantities and the need to proceed with upgrades. Upgraded versions of Cost X now allow the importation of raw data from Digital Engineering software such as 12D and Autocad and Civils 3D etc., without having to convert this data to other recognised forms.