Tonkin & Taylor undertook the geotechnical challenge for the primary interchange station on the new HK$18 billion West Rail line, which extended up the west side of the Hong Kong
mainland from Kowloon to Tuen Mun. T&T worked with Hong Kong based design
engineer RBA over 1999 - 2001 for the
development of project geotechnical design
parameters, challenging locally accepted
materials criteria in a design-construct team on
part of a multi-billion dollar rail development.
Preliminary review of coastal processes and hazards for multiple sites along various shorelines of South East Asia countries.
A classifi cation system was developed that identified possible current and future hazards that had the potential to limit use or development of the sites. A screening level hazard assessment identified that while the sites are reasonably secure from direct effects of coastal erosion, there are some potential hazards associated with the sites that could limit development.
Jetty, Slipway Repair and Road
Construction, Pitcairn Island
Client : British Government.
Discipline : Multiple
The landing at Bounty Bay provides the only access to Pitcairn Island and it is a small rocky bay backed by steep cliffs. The only access into the bay has been by a steel sheet pile bulkhead jetty and concrete slipway connected to a steep dirt road. The jetty is exposed to large waves which have corroded the sheet piles below water level. This project involved the repair and strengthening of the jetty, slipway and an upgrade of the road by constructing a concrete surface.
Tonkin & Taylor International undertakes a wide range of planning, consent and infrastructure design for all types of waste projects. These have included advisory studies for waste management and composting in Tuvalu (ADB), landfill siting studies in Fiji and Papua New Guinea, greenhouse gas and waste inventory studies in 12 Pacific Island countries, and advisory input to landfill operations and leachate treatment in Fiji. Tonkin & Taylor International have also provided technical support to the Fijian Ministry of Housing on strategic waste issues.
The Utwa-Walung Conservation Area (UWCA) is a community-based conservation initiative supported by SPREP. The conservation area includes marine, reef, estuarine, lagoon and mangrove forest ec/osystems. The UWCA provides examples of healthy hard coral, as well as some of Micronesia’s most pristine forests and extensive mangrove ecosystems. Tonkin & Taylor International was engaged to carry out an Environmental Impact (EIA) Assessment for a tourist complex proposal located on the boundary of the conservation area.
Strengthening Water Resources
Assessment and Management (SWRAM)
Project, Papua New Guinea
Client :World Meteorological Organisation/UNDP.
Discipline : Catch Management
Tonkin & Taylor International were engaged by the World Meteorological Organisation/UNDP for institutional strengthening in Catchment Management Planning. This was associated with the Strengthening Water Resources Assessment and Management (SWRAM) Project, Bureau of Water Resources, and Department of Environment and Conservation. Responsibilities included “hands-on” training centred around completion of formal management plans for selected catchments in the Western and Eastern Highlands of PNG.
Client : PNG Department of Environment and Conservation (DEC)
Discipline : Environmental Impact Assessment
The DEC engaged Tonkin & Taylor International to undertake an Environmental Impact Assessment (EIA) for a major open-cast goldmine operation on Lihir Island. The development involved the discharge of waste rock and wastewater to the sea. Tonkin & Taylor International provided an assessment of the potential marine effects, water quality impacts and provided sediment discharge mitigation options for the proposed Environmental Management Plan.
Environmental Impact Assessment (EIA) studies have been undertaken as an integral part of feasibility and design work on the 8 MW Komarindi run-of-river hydroelectric power project. The EIA studies involved wide consultation, supplemented by fieldwork in key specialist disciplines. Mitigating measures were formulated to minimise potential environmental impacts. The need to preserve the catchment in its natural state was fundamental in maintaining the hydro water resource, and was a key aspect of the study. A Protected Area Management Plan (PAMP) was also being formulated for the client by SPREP with assistance from Tonkin & Taylor International.
This project involved an analysis of the recently upgraded water supply network for Majuro, and an identification of the reasons for pressure deficiencies. Tonkin & Taylor International was responsible for the design to modify the network to meet supply requirements. Hydraulic modelling was used to identify the problems in the network, this involved changes to valve arrangements and an upgrade of the main pumping station.
The Rewa Bridge project was a design-build contract undertaken for the Government of Fiji Public Works Department which involved the construction of a 425 m long, four-lane bridge in Nausori, Fiji. The abutment and pier foundations consisted of 204 no. 610 mm diameter steel tube piles driven to depths of 50 m.
The Government funded Aua Road Project was a design-build contract involving the improvement of a steeply graded road. The road provides access to the settlement of Aua with a population of approximately 2000 people. Tonkin & Taylor International undertook the detailed investigations, design and construction support for the concrete pavement construction works, drainage improvement, bridge construction and landslip protection works.
The Faleolo International Airport Upgrade was a project funded by the World Bank. Tonkin & Taylor International was engaged to undertake the detailed investigations, design and construction supervision for the new runway extension, the expansion of the existing apron, a new taxiway, a new control tower, an overlay of the existing runway and an upgrade of the existing airport terminal.
The Fitiuta Airport Project involved the
construction of extensions to each end of the
existing runway, situated on Manu'a Island.
The runway extensions involved development
of a quarry, placing reinforced embankments of
fill and coastal armouring works.
The Natadola Marine Resort is a major development that will include the creation of five hotels, a marina access channel, two golf courses and recreational facilities. The project included an assessment of coastal processes modelling, flora, fauna and marine baseline studies and consultation at village and national levels.
The Asian Development Bank funded the
South Coast Road Project which was a
design-build contract involving the upgrade
and realignment of a section of coastal road in
the South East area of Upolu Island, Samoa.
The Rokobili Port Development involved the reclamation of 40 ha of foreshore, construction of an 800 m long wharf structure with associated dredging, and ancilliary administration buildings and container handling/storage facilities.
Airports Fiji Ltd is planning the upgrade of the
facilities at Nausori and Savusavu. The works
include a new terminal, control tower, fire and
rescue building at Nausori Airport, an apron area,
runway widening and a new terminal at Savusavu.
