Rendel/Ingerop are responsible for developing and delivering the Scheme Design of the Civil Works in Stage 1 followed by the Detailed Design in Stage 2, for the Design-and-Build contractor, ALIGN. Align is comprised of the three Civil Contractors in Joint Venture (Bouygues Travaux Publics, Sir Robert McAlpine, Volkerstevin).

The services provided include design of the Colne Valley viaduct and other structural elements (e.g. abutments); design of associated approach embankments; geotechnical modelling, ground risk assessments and earthworks; soil-structure interaction analysis for piled foundations and earth-retaining structures; geological interpretation of GI data; development of ground models; highway designs for road diversions, realignments, new junctions, new access roads to compounds and transformer sites, highway scope definition, pavements, emergency hard standings, road drainage and vehicle swept path analysis;  track alignments; production of 2D drawings and 3D BIM models of the designs to meet the ultimate client’s BIM and data management requirements; Environmental assessments; hydraulic modelling for river realignments / diversions; acoustic modelling for the design of Noise Barriers.

Rendel, Ingerop’s UK subsidiary, provided Management Support Consultancy services, which included value engineering design to accelerate construction, on the US $2.9 billion Padma Multipurpose Bridge Project (PMBP).

Funded by the Government of Bangladesh, PMBP is a two-level, steel truss bridge with a four-lane highway on the upper level and provisions for a single-track railway on the lower level. The upper and lower levels act compositely with a reinforced concrete deck slab. The bridge has a total length of 6.15 kilometres and a width of 22 metres at upper deck level. As well as rail and road, the bridge carries utilities including a high pressure gas pipe and telecommunication lines. The project is considered one of the most challenging construction projects in the country’s history, as in response to very challenging foundation conditions, it features driven piles over 125m long.

It is the largest bridge in the Ganges-Brahmaputra-Meghna river basin, located approximately 40 kilometres southwest of Dhaka. It connects the south-western region to the rest of Bangladesh to encourage and facilitate economic growth through the transport of people, goods, natural gas and telecommunications.

In addition to the construction of the bridge itself, there is an elaborate system of associated road constructions including two toll plazas and bridge end facilities, a 13.6 kilometre, four-lane, dual carriageway approach road, culverts, small bridges, underpasses, service roads and service areas for residential accommodation. Complex riverbank protection/training works of 14 kilometres in length were also constructed. The social and environment impacts were carefully managed via the implementation of a Resettlement Action Plan (RAP).

Rendel provided Management Support Consultancy (MSC) which included project management of the entire scheme including contractual and commercial advice; engineering and technical support and advice; budgetary and financial management; quality control and assurance; advising on dispute settlement; and the implementation of the social safeguard plans (environment, resettlement, etc.).

Rendel also managed several specific supplementary engineering studies. These included re-detailing of the main bridge precast roadway deck slabs to improve the buildability and enhance longevity; and the design and implementation of a dehumidification system through the interior of the 6.15 kilometres truss main bridge in association with Ingerop, who modelled the completed assembled truss module using 3-D CFD.

Rendel also completed the original Padma River Crossing Pre-feasibility Study in 2000.