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Arche de la Défense © C.Barriquand-Treuille

Exclusive know-how and outstanding projects

Eiffage is firmly focused on developing a structured, innovative offering built on concepts, processes and products combining energy efficiency, care for the environment, user friendliness and optimised costs

While its business activities have impacts, they are also the source of solutions encompassing care for the environment with the legitimate quest for lasting economic growth. The Group’s offering is based on a wide range of exclusive processes and practices developed by its divisions. 

Buildings combining high technology and low energy consumption

The Group’s offering and projects are guided by the key objectives of reducing the carbon and environmental footprint of structures throughout their life cycle, increasing their functionality and user friendliness, and complying with specific technical constraints. 


A perfect showcase, the Pierre Berger Campus

campus PB

Campus Pierre Berger  © Eiffage

The Pierre Berger campus, in Vélizy, was handed over during the summer 2015 with HQE "Exceptional" and BREEAM "Excellent" certifications. (See the chapter on energy for further details on its energy performances). Designated best HQE-compliant services sector building of 2015, this outstanding construction illustrates the synergy between the Group’s different business lines.

As a design complying with the Eiffage’s Haute Qualité de Vie® (high quality of life), the Pierre Berger campus encourages green mobility practices among employees, with the aim of fostering new modes of transport and reducing the site’s carbon footprint. In this context, 70 electric vehicles charging stations have been installed in the car park, 20 spaces are reserved for car poolers and special covered area are provided for bicycles.

The campus also reflects new ways of living and working by providing areas for social interaction and exchanges as well as innovative services.


In keeping with the aims of the Grenelle environmental summit and the green transition, Eiffage Construction has for years been deeply committed to designing and building homes that deliver high energy performance at best cost. These products are based on a winning trio of principles: streamlined design, industrialisation ensuring zero-defect quality, and low energy consumption.

These include Concept Lignum®, spearheading the division’s dry-process applications, H2CO and EcoEco for social housing projects and starter homes, Vivalib for autonomous senior citizens and Ehpad Evolution for dependent elderly people. The range is completed by Suites Home, service residences for professional people on business trips, and Renovalis for the renovation of old residential properties and the conversion of offices into homes.

©Eiffage Construction
Building with wood in line with an energy-efficient, low-carbon urban policy

The Eiffage Construction Concept Lignum® brand uses a combination of concrete and glued-laminated solid wood, harnessing the strengths of both types of material. This process is available in 3D and 2D versions. The 2D version features panels that are assembled on site, while the 3D version requires an intermediate factory assembly stage, with the resulting modules subsequently being put together on site.



Le Concept Lignum® showcased at the COP 21 summit

lignum villette

             Lignum module at Bassin de la Villette exhibition 2015 © Eiffage 

Eiffage exhibited a prefabricated Concept Lignum® module from December 14 to November 18, 2015, at the “Paris of the Future: Tangible climate solutions” show (Paris de l’Avenir: des solutions concrètes pour le climat) held at Bassin de la Villette by Paris City Hall. This module, used as a prototype room for the Jean Jouzel student’s hall of residence built in La Rochelle in 2013 (a passive building capable of stocking more than 600 tonnes of net carbon), is an excellent example of low-carbon solutions. It cuts greenhouse gas emissions during the works phase. The wood material used acts as a carbon sink, stocking one tonne of CO2 per cubic metre.


lignumOffices built using the 2D Concept Lignum® process in Loos-en-Gohelle (Eiffage Construction) ©BLAQ

Following the successful commissioning of the Concept Lignum® 3D based experimental project at the Jean Jouzel student residence in La Rochelle, the division is currently deploying the 2D version for an office concept under construction in Loos-en-Gohelle, the first two units being due for completion in the first half of 2015.


©Eiffage - Communication Department

New wood constructions in Île-de-France 

Solid CLT (cross-laminated timber) in sheets is assembled to build walls, roofing, floors, lift shafts and stair wells, etc. The CLT elements are prefabricated and delivered ready to assemble. As well as stocking carbon, solid CLT structures produce less waste and save water on work sites. They can also significantly reduce construction times.

Eiffage Construction Ile-de-France is involved in several solid CLT projects including, notably, the construction of 140 social apartments in the Ris-Orangis docks eco-district – the largest housing project ever to be built using CLT in France. This is a pilot building for France’s new BBCA low-energy building label. The project’s 1,911 cubic metres of biosourced, recyclable wood will stock 880 tonnes of CO2, equivalent to the carbon emissions that will be produced in catering for the building’s heating and hot water needs for 88 years. The building’s energy consumption is aimed at surpassing the requirements of the RT 2012 thermal regulations by 30%, with heating provided by a collective biomass boiler-house.


The future Hyperion tower©Jean-Paul Viguier et Associés

Other innovative wood building projects are underway, including Hypérion, the highest wood-framed 18-storey tower block rising to a height of 57 m. The project takes fully into account every facet of eco-construction, energy efficiency, green transport, biodiversity conservation and promoting new way of living and working. Standing at the heart of the “Bordeaux Euratlantique Living Lab”, the Hypérion tower will be a landmark in this eco-district which is recognised as an “industrial demonstrator for the sustainable city” by the French Ministries of Ecology and Housing. Eiffage Immobilier, as the developer and consortium leader, will take part in this project with Eiffage Construction. The Hypérion tower has been designed in accordance with Eiffage’s Haute Qualité de Vie® (high quality of life) methodology and the project has secured certification under France’s housing and biosourced building standard (NF Habitat et Bâtiment Biosourcé). In addition to the wood resources to be used, locally-supplied biosourced insulating material is to be used during the construction phase. As regards energy, the project boasts a bioclimatic design and connection to a local heating network. Heralding a new approach to living in the city, it is also planned that the Hypérion tower will provide services to match new modes of use, such as car park that can be transformed into shops, real-time display of energy consumption, district concierge service and co-working facilities. The development of the area outside the building will foster the conservation of urban biodiversity. A central garden area planted with local plant species and a filtering green basin will provide a landscaped pedestrianised setting making the integration of nature into the city a salient feature of this iconic project. Works, scheduled to take 24 months, are due to commence in early 2018 with handover of this architectural complex being planned for January 2020.  

 Press Release


Flexi+, a new concept for apartment blocks

Eiffage Construction’s latest product for the apartment building sector, Flexi+, was developed with the aim of providing greater flexibility on the basis of feedback and customers’ requirements with respect to structural constraints associated with the EcoEco and H2CO concepts. A central axis – containing staircases and lifts – serves two adjoining buildings, one on each side, each rising to its specific height from ground floors on different levels. Additional apartments can be built, such as by adding dwellings with private terrace gardens on the buildings’ roofs. Flexi+ was very well received when it was unveiled at the 2014 USH (social housing union) congress.  

From LED street lighting to architectural lighting

Eiffage Energie is pushing ahead with the installation of its LED street lighting solution patented in 2010. This technology caters for a wide range of requirements, such as monument highlighting, urban security, user convenience and energy saving.


It is also rolling out its Expercité® connected solution – a web-based application for the geolocation and management of urban networks and equipment (including street lighting, traffic lights, CCTV, electric vehicle charging stations and telecommunications networks) facilitating the supervision of operations by works and maintenance teams. This application, specially developed for the division’s infrastructure-related business activities, is currently being rolled out.

The division also has expertise in architectural lighting which combines aesthetic and energy-saving challenges. The company’s offering includes diagnostics, installation, operation and maintenance to ensure the long life of installations.


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Former Convent of the Visitation in Lyon ©Olivier Dupont

Environmentally-responsible roads

The road construction and maintenance solutions devised by Eiffage Route systematically comply with the numerous requirements stipulated in their specifications, including improving working conditions, reducing pollution, preserving natural resources, controlling costs, enhancing the experience of road users and local residents and blending structures into the landscape.

This year, the recycling of road surfaces was a core business innovation, extending the company's existing offering.

The in-situ recycling of road surfaces does not involve any change in the area of land occupied by roads and also enables all materials to be recycled, saves new materials and delivers a two-fold saving on the transport of old and new materials. Recyclean® is the latest innovation at Eiffage Route. It offers a wet-protection encapsulation process (notably for cases where PAHs are present) in addition to the in-situ treatment units already provided by the company, such as ARC 700®, ARC 1000® and ARM 2500®.

ARM 2500® ©Karine Warny

Among the treatment units already in service on road networks, the ARM® 2500 unit was used in Ariège where the Midi-Pyrénées equipment and Sud-Ouest industries department joined forces for a project to renovate road surfaces with an 8 cm-thick emulsion which was covered with a 4 cm layer of warm, thin bituminous concrete. In addition, the Biocold® range of cold-coated aggregates designed for road surface maintenance is manufactured at a temperature lower than 100°C and can consist of up to 100% recycled aggregates and biosourced binders.

GB5® and BB5® are very high-performance hot asphalt mixes characterised by their excellent compaction properties, great rigidity and superior durability. The optimised particle size distribution yields savings on bitumen, the choice of texture ensures enhanced tyre adhesion and the composition delivers savings on the most sought-after aggregate classes. Since 2010, when the first experimental strips were laid, nearly 1.1 million tonnes of fifth-generation GB5® and BB5® have been successfully applied on motorways, and at industrial and port facilities. The first site follow-up surveys conducted under the supervision of CEREMA (the RD75 road with CG38 (Isère general council), the RD422 with CG67 (Bas-Rhin general council), and the RN31 with DIR Nord highways authority) show clear benefits in terms of density and macrotexture. In 2015, GB5® and BB5® were laid on the A84, A71, A1 and A77 motorways as well as many national highways and industrial sites.

Laying Microphone® on Paris ring road ©Eiffage Route

Eiffaprène®, a pellet-based additive, is designed to extend the service lives of road surfaces. The dosage of this highly versatile product can be adjusted according to the required performance and the scale of the project. There is no need to transport or handle hot binders, so reducing greenhouse gas emissions and accident risks. This product was used on the Balata interchange construction site in Guyana.

The range of products for road surface layer is completed by the Microphone® and Nanophone® noise-abating coated aggregates which remain extremely popular with clients, especially in urban areas. In 2015, 113,000 sq. m of Microphone® were applied on the Paris ring road in order to reduce traffic noise.

Eiffage Route is also developing special processes to optimise the consumption of raw materials. The Granuchape® process for the laying of ultra-thin layers of coated aggregate reduces the consumption of raw materials per square metre by half compared with conventional solutions. This process was applied on 700,000 sq. m of road surface in 2015 - and has been used to cover a total of 11 million sq. m since it was launched. The speed of this process for the laying aggregate in very thin layers (about 2 cm thick) minimises traffic disruption and maximises user comfort and safety.



Biophalt®, pale-coloured vegetable binder produced from pine derivatives and by-products of the papermaking industry © Eiffage Route


Urban transport - adapting and developing infrastructure

Building a new bus, tram or metro line calls for a wide range of skills to perform tasks such as earthworks, rerouting pipes and networks, roadworks, installing street lighting and traffic lights, laying tracks, ticket vending facilities, safety and CCTV equipment, and continuous maintenance with quick response times. In dense urban areas, these operations must be carried out in accordance with strict requirements in terms of safety, minimising impacts on the environmental and local neighbourhoods and complying with lead times. Eiffage proposes a comprehensive offering which includes all the complementary areas of expertise necessary for this type of project in urban environments. 


Le Havre tramway ©Geoffreoy O.Delorm

One of the major priorities for Grand Paris – the Greater Paris area – is to provide public transport links connecting up all parts of the Ile-de-France region. In spring 2014, on the strength of its complementary fields of know-how and its long-established experience in this region, Eiffage Génie Civil was selected – as part of a consortium – by RATP (Paris transport authority) and Stif to install the first section of the extension of the Paris metro’s line 14 which will eventually reach the Mairie de Saint-Ouen council offices. Since summer 2015, a tunnel-boring machine has started excavating the first 1,600 metres of tunnel between Pont Cardinet station and Saint-Lazare railway station, to be reached by spring 2016. Within a year, a second tunnel-boring machine is to begin excavating the remaining 2,000 metres between Pont Cardinet and Porte de Clichy. The division’s teams are backed by the environmental expertise acquired during previous underground engineering operations in urban environments, including the handling and removal of large volumes of soil in confined areas, managing and preventing underground water pollution and controlling impacts on local residents.

Eiffage Génie Civil also handed over the new Rosa-Parks regional railway (RER E) station in Paris's 19th arrondissement, expected to serve 55,000 passengers per day in the near future, and the T6 tramway between Châtillon-Montrouge and Vélizy-Villacoublay, to be extended to Viroflay in spring 2016.

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Rosa Parks station (Eiffage Génie civil) ©Alexis Toureau

In 2015, in addition to carry out renovation work on existing RER–SNCF railway lines, Eiffage Rail won a contract to conduct preparatory work on the Eole line (RER E).

The Group – through the companies it was founded by (Borie, Fougerolle, Ballot and Quillery) – has played a part in the construction of practically all the French capital’s metro lines over the last 100 years. Indeed, the Paris region – with its underground limestone quarries and the gypsum and green clay formations that have to be cut through – no longer has any secrets for the Group’s teams owing to the large number of tunnels they have already bored.



Le BSI®, material with outstanding properties

Notre Dame de Lorette International Memorial, in Pas-de-Calais © Eiffage Infrastructures

BSI® is an ultra-high-performance fibre-reinforced concrete offering outstanding properties in terms of strength, durability and facing quality, patented by Eiffage Génie civil nearly 20 years ago. In 2015, BSI concrete was being used in engineering studies for architectural strips for the construction of the 2.4 km long Rennes metro viaduct. Various teams from Eiffage Route Ouest will be assigned, in turn, to construct 70 piles and the 2.4 km long deck for this massive structure. The architectural aspect is a key feature of this project, especially as the viaduct must blend into a dense urban area surrounded by Rennes-Beaulieu University, residential areas and the Rennes business cluster.


L’Unibridge® - to build and rebuild

Since 2008, Eiffage Construction Métallique has been manufacturing and selling Unibridge® rapid-assembly modular bridges, patented in partnership with Matière®.

Unibridge® in Sri Lanka ©Eiffage Métal

In 2014, the Unibridges project in Sri Lanka won the gold award in the International Projects category of the Fimbacte Cadre de Vie contest. In the context of French overseas development assistance in 2013, Eiffage Construction Métallique and Matière® had agreed to help improve Sri Lanka’s road network with the delivery of 50 Unibridge® bridges to the Sri Lankan government by June 2015. Special note was made of the comprehensive impact of this initiative in technical, economic and social terms.


User well-being and safety

Building differently also involves visualising the user in the context of structures built. APRR and AREA have placed the prevention of dangerous behaviour at the heart of their customer policy in order to reduce the number of accidents attributable to human error.

On the A6 motorway, the Limas toll station – one of the oldest in the APRR network – has been completely renovated. It now has 34 lanes, eight of which are drive-through lanes enabling vehicles with a toll badge to drive straight through at 30 km/h. These works were aimed at improving traffic flow and so enhancing safety for customers. This toll station is the busiest in the APRR network, with between 30,000 and 40,000 vehicles passing through daily (excluding holiday periods).

Tactile paving slabs developed by the Infrastructures division ©Eiffage

Some technologies developed by the Infrastructures division also improve safety for motorists. The very high adherence of the Sécuriprène® road surfacing material, for example, makes it a flagship product for safety. It is very hard-wearing and its application in thin layers leads to long-term savings on natural resources. In addition, the light-coloured, luminous Lumichape® coating makes the road easier to see at night.

Eiffage Construction ensures the health-related safety of its materials, above and beyond compliance with regulations requiring information on their effects on health. Whenever possible, Eiffage Immobilier replaces conventional products that are less highly rated for health safety – such as coatings, partitions and suspended ceilings, insulating materials, door and window frames, paints, varnishes and glues – with products qualifying for top-level A+ labelling. Thanks to this policy, adopted by its purchasing department, the division is able to keep one step ahead of the requirements for HQE® target 2 certification regarding health information on products used. 


Roofs of Bryggen, in Bergen, Norway - Photo contest 2011 ©Pierre-Etienne Bougon (Laborde Gestion)