Samoa Aviation Investment Project
- Heavy Weight Deflectometer (HWD) Testing
- Technical PCN assessment
The Government of Samoa (GoS), through the Ministry of Works, Transport and Infrastructure (MWTI), received a grant from the World Bank and other development partners for Phase 2 of the Pacific Aviation Investment Program (PAIP). Part of the grant was dedicated to conducting the HWD structural assessment required to provide sufficient information on the airports current pavement condition. The project was implemented through the Samoa Airport Authority (SAA).
The survey consisted of testing multiple profiles along the 3000m of Runway, Taxiways and Apron pavement areas; using Data Collection Limited’s (DCL) Heavy Weight Deflectometer (HWD). Extra testing was required where significant defect damage had occurred and this was assessed on site by DCL’s Senior Project Manager - Ian Chatwin. A visual assessment was also undertaken and imagery was collected of the pavement areas which included the local geographical surroundings.
The deflection data from the HWD, visual inspection assessment and coring data supplied by Fulton Hogan were used in the back calculation and engineering analysis to provide Samoa Aviation Authority with a technical Pavement Classification Number (PCN) assessment. The PCN assessment was led by Dr Geoff Rowe, consultant to DCL.
This PCN report assisted the Samoa Aviation Authority and the design team by providing sufficient data on the current pavement performance. This allowed them to target future investigative works and come up with a suitable pavement upgrade design.