SH1 Alpurt Sector A1 Motorway - Light weight
embankment
Owner: Transit New Zealand
Contractor: W Stevenson and Son
Consultant: Connell Wagner
Ka-Ching Cheung designed a 3m thick expanded polystyrene light weight embankment/pavement subgrade for the State Highway SH1 to reduce the designed 30m high embankment fill load. It enabled the contractor to complete the construction within a tight programme.
