- Urra Dam, Columbia, South America - Combined was asked to overcome a range of logistical and engineering challenges to successfully complete the structural modification of a remote hydro-electric dam in Colombia, South America. The project – to raise the full supply level of the Urra Dam in the state of Cordoba – required removal of a 5.2m high section of the existing spillway and structural modifications to the crest to accommodate new fuse gates. Continue Reading
- Port Hedland, WA - Due to the increase in demand for iron ore, the rail car dumper at the BHP Billiton Port Hedland Iron Ore Loading Wharf required upgrading. Steel I-beams encased 400mm deep in concrete had to be left in place while the structure was strengthed, and then cut by wire saw for removal at 25 separate locations. Continue Reading
- Hinze Dam, QLD - The Hinze Dam Stage 3 project was designed to increase water storage capacity and delay the release of floodwaters down stream thereby decreasing the number of properties vulnerable to flooding. Raising the spillway and embankment required the existing bridge to be removed to make way for construction of the new spillway and bridge. Continue Reading
- The Cross City Tunnel, Sydney NSW - As part of the Cross City Tunnel project, which links the Eastern and Western suburbs of Sydney, the feeder road from Sir John Young Crescent to the Cahill Expressway and Sydney Harbour Tunnel required widening. This involved extensive modification to the abutment of the Art Gallery Road bridge. Continue Reading
- The Argyle Cut, Sydney NSW - The NSW Rail Corporation required an emergency exit door installed in the concrete tunnel wall of the Shore Down Line, close to the Argyle Portal, which forms part of freeway approach to the Sydney Harbour Bridge. The tunnel wall is 1.2m thick and the opening needed to be 1.5m wide by 2.2m high. Continue Reading
- Chatswood to Epping Rail Tunnel, Sydney NSW - For the construction of the Chatswood to Epping rail tunnel, Theiss’ design plans required the rail lines to be fixed to a concrete track slab by the use of Delkor rail base plates. There was 5.5km of floating slabs and 3.1km of DFF drill and grout slabs existing in the tunnel, requiring 96,000 50mm diameter holes to be drilled. Continue Reading
