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Hôtel de Bourrienne, the restoration is finished

May 2020, 2BDM wins the tender for the restoration and security of the Protestant temple in Saumur.

The entire building, which has been listed as a Historic Monument since 1991, was built in 1842 by Charles Joly-Leterme, architect for the City of Saumur. Composed of a rectangular nave whose entrance is marked by a portico and a colonnaded portico, the temple was regularly maintained until its bombing in 1940. It was then truly restored.

In 2019, a diagnostic study carried out by 2BDM showed that the tufa stone masonry of the façades was badly damaged, that the framework was poorly assembled and overloaded, and that the slate roof and its ridge were dilapidated. In addition, the building is weakened by poor management of rainwater. The estimated cost of the works is therefore estimated at €950,000 excluding VAT, comprising two phases of work. In order to carry out the mission entrusted to it by the City of Saumur, our agency called on the BET structure AR Ingénierie and the BET fluids E3F.

Our intervention on the building, beyond its simple restoration and perpetuation, will allow the Protestant temple to regain its rightful place in the landscape and heritage of Saumur.

Hôtel de Bourrienne, the restoration is finished

 In April 2020, the restoration and fitting-out of the Hôtel de Bourrienne, located in the 10th arrondissement of Paris, is completed. Begun in 2017, they have enabled this building, classified as a Historic Monument since 1927, to preserve its heritage value while meeting an ambitious modernisation programme.

Built between 1787 and 1791, in the Poissonnière faubourg which gradually became fashionable at the end of the 18th century, it was occupied by the famous "Merveilleuse" Fortunée Hamelin who had many decorations made there between 1792 and 1798. It was in 1801 that the hotel took its name when it became the property of Louis-Antoine Fauvelet de Bourrienne, Napoleon's private secretary. The new owner continued the development and decoration of the hotel where his wife ran a popular lounge between 1813 and 1824. It is indeed Fortunée Hamelin and the Bourienne couple who gave the hotel the essential character that we know today.

On the basis of a complete diagnosis of the monument, conducted by us in 2016, the project management was carried out jointly by 2BDM in charge of the restoration of the hotel and its decor and by MO² which worked on the layout of the offices. This work in partnership allowed our private client to install its offices and reception areas in a Hotel de Bourrienne, once again revealing all the splendours of its architecture, particularly its rare Directoire decorations.

Chateau of Versailles, the restoration of the Queen's Library and its Supplement

March 2020, the restoration of the Queen's Library and Library Supplement is completed. Located in the Queen's Interior Apartment, the library and its Supplement are centred around the Cour du Dauphin, on the first floor of the Palace of Versailles.
Having undergone numerous transformations during the 18th century, the library, as we know it today, is the work of Richard Mique, Marie-Antoinette's favourite architect. Having never benefited from any real restoration, the room was in very poor condition at the time the work began. The objective was to restore the library to its last known state, that of 1781.
The bookcase features high glass cabinets, equipped with metal racks, a masterpiece of late 18th century locksmithing, allowing the height of the shelves to be adjusted, and adorned with sculpted registers adorned with subtle two-tone gilding: yellow gold and green gold.
The restoration of the library has made it possible to carry out the necessary restorations by treating the historical substance, and especially the gilding, with the utmost care. The antique painting on the inside of the library and supplement cupboards has been reintegrated in conservation and the parquet flooring has been re-coloured according to the taste of the time, in accordance with the recipe of Jean Félix Watin. The work carried out in this way makes it possible today to restore all its historical and aesthetic coherence to the row of rooms reserved for the intimacy of the Queen of France.

Bordeaux: 2BDM accompanies the rehabilitation of a stone bridge

February 2020, 2BDM won, with the group led by BG Ingénieurs Conseils, the consultation for the restoration and consolidation of the stone bridge in Bordeaux.

With a length of 487 meters and resting on 17 piers, the bridge, built between 1810 and 1822 on the order of Napoleon I, links the city center to the right bank. Built in stone and bricks, it has been inscribed on the Historic Monuments list since 2002.

The objective of Bordeaux Métropole, the project manager of this operation, is to carry out the renovation of the bridge so that it recovers all of its structural performances. The third most often used bridge in the city, it will be our group’s responsibility to conduct a general and concomitant reflection on the rehabilitation of the bridge and the maintenance of the crossings of the Garonne during the entire duration of the work.

The role of 2BDM is to accompany the project management team on heritage issues and to insert the restoration into a methodology encompassing both means of access and phasing, with the goal of minimizing impacts on the users.

Military school: first deliveries on the main building

January 2020, the first restoration work on the central pavilion of the Military School has just been completed. Conducted under the direction of 2BDM and under the project management of the OPPIC, the operation concerns the facades, roofs and sculpted decorations of this building built between 1764 and 1773 according to the plans of the architect Ange-Jacques Gabriel. Composed of a central pavilion and two side wings with a square return on the courtyard side, the building, protected as a Historic Monument between 1913 and 1988, is part of a quite remarkable urban layout since it faces the Champ-de-Mars which is part of its axis, thus completing its composition.
The first stages of work have enabled the restoration of the roof of the dome as well as the restoration of the ashlar facade of the central pavilion facing the Champs-de-Mars. The restoration of the elevations of the east wing was also completed. In an effort to pool resources, the work was carried out simultaneously.

Restoration(s) underway at the Meaux cathedral

October 2019, one worksite gave way to another on the site of the Saint-Étienne cathedral of Meaux in the Seine-et-Marne department. The restoration of the high central part of the western façade having been completed, the restoration of the portal of the Last Judgment began.

Located in the old city of Meaux, the Saint-Étienne cathedral comprises, with the old chapter house, the formrt bishops’ palace, a few outbuildings and the Boussuet garden, the sole almost complete episcopal complex of the Île-de-France. The western façade was built between the mid-14th century and the early 16th century and the low parts were constructed between 1336 and 1358. The tympanum of the portal of the Last Judgment is composed of reused elements from the 13th century. In the late 14th century, the gable located above the portal was added. It was entirely redone in the 20th century.

The work on the entire central part includes the restoration of the masonry and sculptures, the periodic repair of the building’s reliefs and moldings with patching without any recutting, the anti-corrosion treatment of the metal frames and the installation of anti-pigeon protection.

2BDM restores the corner study at the château of Versailles

During the summer of 2019, the restoration of the corner study of the king’s interior apartment continued at the château of Versailles.

In 1735, the room that would become the corner study, successively used by the kings Louis XV and Louis XVI, was created in the enfilade of the king’s bedroom and the clock salon. Reworked on several occasions, the room has taken on the appearance, known today, that it had in 1760.

The restoration of the corner study was necessary. The décor of the woodwork was in a generally poor state: disjointed and fissured wainscoting, very damaged woodwork, dull and dirty paint, dulled, worn and incomplete gilding, notably in the circulation zones.

Apart from the cornice dating back to 1815, the restoration, led by 2BDM on the basis of the last historic state known of the Ancien Régime will make it possible to recover the décors of Verberck and the Rousseau brothers through the use of 18th-century techniques. The electrical installations will br updated to current standards and deployed to permit the room to be better lit. A fire detection system will also be installed.

City hall of Vincennes, 2BDM prizewinner

June 2019, 2BDM won the invitation to tender for the renovation of the shell and core of the city hall launched by the municipality of Vincennes in the Val-de-Marne department. The building, while its appearance was completely homogeneous, presents the specificity of having been built in two phases: the southern façade was built in 1891 by the architect Eugène Calinaud and the northern façade in 1935 by Henri Quarez and Gustave Lapostolle, architects of the city of  Vincennes.

Partially inscribed  (1999) then listed (2000), the city hall presents a rather good general condition. However, the absence of basic cleaning and maintenance work on the façades, as well as periodic modifications, lessened its architectural and aesthetic qualities. Above all, the technical characteristics of the woodwork were no longer adapted to the constraints of heat and sound insulation imposed by an occupied public building on an urban site.

Consequently, we proposed a renovation of the building’s exteriors, a reinforcement of the heat and acoustic insulation of the woodwork and a restitution of the architectural layouts of the building as they existed in the mid-20th century, which had disappeared over time, sometimes even recently.

The restoration of the bell tower of the Sainte-Marie-du-Mont church

May 2019, 2BDM finished the restoration of the bell tower of the Notre-Dame-de-l'Assomption church in Sainte-Marie-du-Mont in the Manche department.

With its 16th-century bell tower, the church has been a listed Historic Monument since 1840. Struck by lightning in 1999, the church has been partially covered by a net since 2003.

The position taken for the restoration consisted of the maximum preservation of authentic materials, often worn out by wind and salt, while guaranteeing the durability of the work through the use of better-adapted materials: appropriate restoration stone, systematic use of lime to replace the cement very largely employed postwar. The whole could consequently recover its great architectural coherence and richness, so characteristic and visible from afar in this landscape between marsh and coastline.

Château of Champs-sur-Marne, restoration of the Madame Salon

April 2019, the restoration project of the Madame Salon at the château of Champs-sur-Marne (Seine-et-Marne) will begin.

Although largely recomposed, the Champs-sur-Marne estate is one of the rare monumental ensembles designed at the end of Louis XIV’s reign that has subsisted in such complete form in the Île-de-France. Between 1895 and 1910, the château’s park was redone at the request of its owner, Louis Cahen d’Anvers, under the direction of Henri and Achille Duchêne in an 18th-century spirit. At the edge of the woods southeast of the château, they created the Madame Salon, listed as a Historic Monument in 1935, composed of a winter garden, a large portico comprised of latticework and its furniture.

As the large portico is on the verge of ruin and threatens to collapse, the operation will permit:

-          The repair of the corroded and ruined metal and framed structures,

-          The restoration of the architectural proportions and relief elements,

-          The repair of the latticework to replicate its original condition,

-          The restoration of the furniture,

-          The needed enlargement of the foundations weakened by the bottom of the metal posts that are corroded, sunken and broken.

Saint-Étienne church in Brie-Comte-Robert, the renovated side aisles and chapels

March 2019, the restoration of the Saint-Étienne church in Brie-Comte-Robert was completed, after three years of work.

Built between the 13th and 17th centuries, the Saint-Étienne church is a major monument of Seine-et-Marne, listed as a Historic Monument since 1840.

The studies and work carried out by 2BDM concerned restoring the masonry which was partially in a powdery state, extricating and restoring the painted décors, restoring the furniture, paintings, statues and stained-glass windows, putting the church in compliance with ERP standards and adapting the lighting and heating to be suitable for a religious as well as cultural use.

This last campaign completed the interventions needed inside the monument.

Banque de France - 2, rue de la Vrillière in Paris

February 2019, Banque de France entrusted 2BDM with the repair of the structural work of the building, located at 2, rue de la Vrillière, in the 1st arrondissement of Paris.
We decided, in the framework of this operation, to work with the competencies of Art graphique et patrimoine to take measurements and create the BMI “structure” design office. Completely renovated and restructured in 1733 by Pierre Desmaison (1711-1795), the building has totally atypical features. The edifice has a strong heritage value, and has been a listed Historic Monument since 1928. Banque de France will continue to occupy it during the renovation. It is moreover located in the particularly dense and sensitive urban context of central Paris. Lastly, a complex issue should be taken into account: that of the depollution of the stones and ironwork contaminated by lead and that show the presence of asbestos.

Fontevraud abbey, launch of the Musée d'arts de la fannerie project

January 2019, the construction site for the creation of a modern art museum in the royal abbey of Fontevraud began.

Following the donation by the Cligman couple of a large part of their collection of artworks to the state and the Pays-de-la-Loire region, studies and work were conducted by 2BDM to convert the Fannerie building, the former stables of the mother superiors, into the “Art Museum, Martine and Léon Cligman donation.” Ideally located inside the abbey and possessing spaces adapted to a museum function, the Fannerie was the last monastic building constructed under the Ancien Régime, in 1786. It was soon after modified to meet the needs of the penitentiary in the abbey right after the French Revolution whose major vestiges have been conserved.

The tripartite agreement signed between the state, the region and the donors will make it possible, when the work is completed, to present the collection composed, among others, of 19th and 20th-century paintings, drawings and sculptures (notably works by Germaine Richier, Bernard Buffet, André Derain, Marino Marini), as well as to organize temporary exhibitions to which an entire level will be dedicated.

Completion of the work in the Salle du Sacre of the château of Versailles

October 2018, the restoration of the Salle du Sacre of the château of Versailles was completed. 2BDM was in charge of its diagnosis and project management.

Successively the third chapel of the château, then the Grande Salle des Gardes shared by the king and queen during the Ancien Régime, this large space became, under the impetus of Louis-Philippe, a museum of the history of France devoted to Napoleon Bonaparte. It is a showcase for large paintings illustrating the Sacre de Napoléon, the Serment de l’armée fait à l’Empereur après la distribution des aigles (Jacques-Louis David), the Bataille d’Aboukir (Jean-Antoine Gros) and the Allégorie du 18 brumaire (Antoine-François Callet).

Maintaining the decorative and iconographic coherence created in 1833-1835, the operation made possible the correction of the alterations occurring over the years while revealing the subtle contrasts and nuances of color in its original décor, heavily dulled and faded over time. The restoration included all the arches painted and highlighted by gold grisaille, wood paneling with a faux marble décor and sculpted and gilded plaster and carton-pierre décors. The operation also brought the required technical and safety standards up to date (electricity, fire detection, security, heating, ventilation).

Restoration of the “Bury plateau” of the Palais-Royal

September 2018, after a year’s work, the restoration of the Bury plateau of the Palais-Royal in Paris was completed and pedestrians could once again use it. Framed by the colonnades of the Galerie d’Orléans to the north and the Valois and Montpensier peristyles to the east and west, it was named after the artist Pol Bury who created the fountains enhancing the plateau’s two basins in 1985.

The operation led by 2BDM had a three-fold objective: restoring the Bury plateau through totally replacing the stone slab, managing rainwater flowing from the terraces of the Orléans galleries to the subsoil and repairing the fountains’ underground hydraulic and electrical networks and infrastructure.

Moats of the Bellegarde château, 2BDM prizewinner

August 2018, 2BDM won the invitation to tender for the restoration of the moats of the Bellegarde château, located in the Loiret. 

Sited in the center of one of the main cities of the Gatinais, the Bellegarde château is comprised of a vast group of buildings that brings together a keep built in the 12th century, as well as many buildings erected, in the 16th and 17th centuries, around a forecourt and a bailey.

Our mission began with a diagnosis of the moats. Next, considering the program established by the city of Bellegarde, we handled, as project manager, consolidatiing the main walls of the destabilized scarp and counterscarp, remounting the collapsed or ruined parapets, cleaning the platforms and reestablishing the old footbridges. The work was done in four phases: the northern bridge and exterior moats, the western interior moats, the eastern interior moats and lastly the southern pond and exterior moats.

The restoration of the moats is part of a global project led by the municipality, which wishes to make the Bellegrade château a major heritage site in the Loiret by giving it back all its grandeur.

The moats are a listed Historic Monument.

Saint-Symphorien de Touches church in Mercurey – Ruban du Patrimoine 2018

July 2018, the last restoration work on the Saint-Symphorien de Touches church in Mercurey (Saône-et-Loire) was accepted. Having won, in 2014, the invitation to tender launched by the commune for the church’s restoration, 2BDM undertook the diagnosis and complete project management. The church, built between the 13th and 16th centuries, has a compact plan, distinguishing it from other churches in the south of Burgundy through its Gothic character and the architectural specificity of its bell tower.

The work was divided into three sections. The first concerned the building’s structural problems (belfry and bell tower). The second section focused on restoring and enhancing the church’s interior: masonry, woodwork, stained-glass windows, painted décors, furniture and technical elements. Lastly, the third section dealt with the monument’s exterior restoration.

This project was awarded the Rubans du Patrimoine 2018 regional prize.

The restored Mounet-Sully room of the Comédie-Française

July 2018, the restoration work of the Mounet-Sully room at the Palais-Royal was accepted. This room in the Montpensier wing has been part of the Comédie-Française since 1912. It has a rich décor designed by Pierre Fontaine in 1830-1831, which was embellished by Prosper Chabrol during the Second Empire.

The Comédie-Française, wishing to enhance this room whose comfort and state of conservation had deteriorated over time, committed the €400,000, excluding tax, needed to restore the décors (marbled stucco with the gypsum rosette decorations on the ceiling, gildings, paintings, painted fabrics, entablatures, cornices, pediments, mantlepiece pillar, etc.), joinery elements (parquet floors, doors, windows, shutters, embrasures, etc.) and to improve the electrical equipment as well as the heating and ventilation installations.

Now restored, the Mounet-Sully room will be able to fulfill the three functions desired by the administration of the Comédie-Française: welcoming school groups, organizing light show forms and serving as a reception room.

Orangerie of the Hôtel de Sully, the restored interiors

In June 2018, the restoration of the interiors of the Orangerie of the Hôtel de Sully located in the 4th arrondissement of Paris was completed.

The Hôtel de Sully, built in the first half of the 16th century, remains one of the crown jewels of the Marais and the specific architecture of private mansions, called “between courtyard and garden.” The head office of the Center for National Monuments today, the mansion was moreover listed as a Historic Monument in 1862. As for the Orangerie, it was listed in 1953. In the 1960s, it was the object of major restoration work having altered it in a significant fashion. Unused for several decades and presenting major problems on the level of the roof and gutters, the Orangerie was the subject in 2014 of a diagnostic study conducted by 2BDM.

The complete project management, turned over to 2BDM, made it possible to renovate the building and make it usable again, according to the orientations defined by the contracting authority. Receptions, lectures and events with a cultural vocation will now be able to be held in its lower gallery. The first floor (upper gallery, east and west pavilions) were remodeled into coworking spaces. The original volumes were reestablished in the upper gallery through the demolition of modern partition walls that compartmentalized it. The woodwork of the doors and windows was repainted and, on the exterior, the gutters were restored. In the framework of this operation, 2BDM also designed the furniture and layout.

Versailles, the restored Hameau de la Reine

In May 2018, the Maison de la Reine reopened its doors to the public. Inspired by theories on the return to nature, the Hameau de la Reine in the park of the  Château de Versailles was built between 1783 and 1787, on the initiative of Marie-Antoinette. The Maison de la Reine, the Maison du Billard, the Réchauffoir and the gardens have just been restored by 2BDM. The restoration approach was to rediscover the architectural and landscape arrangements dating back to the creation of the Hameau in the 18th century, without however removing the contributions of the First Empire and the Restoration.

Three separate spaces can be distinguished: the Maison de la Reine and the Maison du Billard, the Rechauffoir and the gardens. The first benefited from the restoration of the façades, masonry, framework, tile and thatch roofs, the restitution of the spiral staircase and the exterior gallery, the restoration of the exterior and interior décors according to the earliest historical state known, the repair of the floors, the rollout of high and low-voltage electrical installations, as well as a climate treatment. In the Réchauffoir, deteriorated exterior restorations dating from the early 2000s were repaired on the level of coatings, wood sections, paving and thatch roofs. The interior restoration concerned the fireplace, the kitchen garden and the bread oven. The land around the Maison de la Reine was reworked and a gentle slope was created with the aim of drawing off runoff water and cleaning up the buildings. The paths of the 1786 plan were brought back to their original condition. The gardens were replanted. Only the vegetation present in the Hameau in the late 18th and early 19th centuries was introduced in this operation.

Vézelay Basilica, restoration of the Saint-Antoine tower and the southern arm of the transept

In March 2018, the restoration worksite of the Saint-Antoine tower and the southern arm of the transept of the Sainte-Marie-Madeleine Basilica in Vézelay ended.

Holder of a framework agreement for the conservation, restoration and enhancement of the basilica, 2BDM is currently in charge of several operations on this exceptional site, which is on UNESCO’s World Heritage Sites list.

The operation concerned an overlapping zone of several architectural spaces with a complex construction chronology. Thus, in addition to treating structural consolidation problems of the staircase turret and the gallery of the southern arm of the transept, to protect the tower’s upper masonry against inclement weather, to enhance the exterior as much as the interior by ensuring the most harmonious addition of light, the work undertaken also made possible the archeological analysis of spaces until this point barely accessible, completing our historical knowledge of this major but relatively undocumented monument. The Center for Medieval Studies of Auxerre handled the operation’s archeological followup.

Moreover, when the worksite was finished, and in order to use an available financial remainder, the interior restoration of the 9th bay of the southern aisle of the nave was added to the operation. The restoration of this entirely Romanesque bay of the church constitutes a test bay with the perspective of a future restoration of the nave of the monument, built in the first half of the 12th century.

Fontevraud Abbey, startup of the Romanesque kitchens worksite

In January 2018, the worksite of the restoration of the old Romanesque kitchens of the Fontevraud Abbey began under the direction of 2BDM. The edifice was listed as a Historic Monument in 1840, as well as several other major buildings of the abbey such as the abbey church, the Cloître du Grand Moutier, the infirmaries and the Saint-Benoît chapel.

Lacking its crown in the late 17th century, the building was the object of a complete restoration by the architect Lucien Magne in 1903-1907, with the restitution of the lanterns on the basis of contemporary examples and drawings by Viollet-le-Duc published in his Dictionnaire raisonné de l’architecture française du XIe au XVIe siècle.

The kitchen building is a singular construction with an octagonal plan flanked by absidioles with a crown bearing a dome motif and conical hoods in scale-cut stones. It was built in the early 12th century and was proportional to the size of the abbey’s medieval monastic population.

Whereas the kitchen building was not the object of any major work in the early 20th century, the worksite that began will enable the most deteriorated parts of the edifice to be stabilized and consolidated. The building will be cleaned and the authentic old elements will be conserved. The work, for an amount of €1,820,000 excluding tax, will be carried out until the end of 2020 at the latest.

Prior to the work, a major archeological campaign was carried out in order to better understand the building’s construction phases as well as its different uses over time.

Parc de Sceaux, 2BDM winner

In November 2017, 2BDM won the call for tenders for the restoration of the waterfalls and ripraps of the Grand Canal and the Octogone basin of the Parc de Sceaux.

The park’s waterfalls were built in the 1930s by the architect Léon Azéma, on the site of the old waterfalls of Le Brun, created at the end of the 17th century and destroyed during the French Revolution. Their functioning was interrupted following structural problems resulting from the instability of the ground. A complete restoration program is being defined to consolidate the ground and redo the structural works, restore the reinforced concrete elements and their impermeability and completely redoing the fountains. The plant environment and the landscape setting of the waterfalls will be totally restored following the arrangements identified in the project of the 1930s.

The ripraps of the Grand Canal, the Seignelay canal and the Octogone basin were the object of major restoration campaigns in the 1940s and 1980s. These works built on unstable ground and subject to erosion present major problems, with slanting and subsidence. Their restoration will concern the reconstruction of the most unstable sections and the consolidation of the weakened sections. An over-locking and pointing will be done on the walls of the banks dressed with rubble stones. The inclusion of structures (pontoon, works for the amphibians, etc.) will complete the repair of the ripraps.

With a projected work envelope of €4,200,000  excluding tax, 2BDM will handle the diagnosis, complete project management and scheduling, steering and coordination.

Exterior restoration of the Cherbourg theater, 2BDM prizewinner

In August 2017, 2DBM won the invitation to tender to continue the restoration of the Le Trident – Scène nationale theater in Cherbourg. Built in 1881-1882, the proscenium theater by Charles de Lalande is now a listed historic monument.

In 2011, we had already worked with the city of Cherbourg-Octeville on upgrading the theater’s technical installations. The following year, the municipality launched a general renovation project for the surroundings. This scheduled restoration was a continuation of the site’s promotion.

In line with the principles retained in the diagnosis we had conducted in 2014, we decided to keep to a faithful vision of the original elevations. Our group, in order to respond to the contracting authority’s program, will also work on improving the reception and comfort conditions for the public, as well as the enhancement of the exterior through the use of light. This approach is in keeping with contemporary light ambience that the city developed in the framework of the revamping of urban development, while respecting this theater’s exceptional historical and architectural features.

Completion of the restoration of the Saint-Martin de Laives church, 2BDM prizewinner

In July 2017, 2BDM won the invitation to tender for the exterior restoration of the nave and the completion of the interior restoration of the Saint-Martin de Laives church in the Saône-et-Loire department.

The Saint-Martin church is a genuine iconic building of the department, both through its privileged position and its architecture. It occupies the top of a hill where its bell tower proudly stands out, emerging from the imposing mass of its lauze or flagstone roofs, so typical of Burgundy. Architecturally, this church offers a fine historic synthesis, between a Romanesque structure and Gothic extensions.

After having undertaken, under our supervision, the restoration of the bell tower (1994-1995) and the partial renovation of the interior (1998-1999) of the Saint-Martin church, the commune decided to entrust us with completing the restoration of the church. We are therefore delighted to continue this collaboration with the commune of Laives.

The operation will make it possible to restore the roofs and façades of the nave, as well as the interior of the nave, the side aisles, the north chapel and the south chapel.

Restoration of the Saumur city hall, 2BDM prizewinner

In June 2017, 2BDM won the invitation to tender for the restoration of the façades of the city hall of Saumur, in the Maine-et-Loire department. Since the 16th century, the “Common House” of Saumur, now the hôtel de ville (city hall) has administered the Angevin city on the banks of the Loire. Part of the building is a listed historic monument. The city hall, with its rich architectural composition, was built from the 15th to the 20th century. Today, what is required is to restore the exterior. Initially, we will do a diagnosis after which an intervention program will be established. Next, we will handle the operation’s project management. We will have to meet several challenges. How can we propose a global project making the building’s successive historical states readable while ensuring a unified treatment of the entire site? It will concern once again providing a coherent reading to the composition of the façade through the treatment of the masonry, the ornaments and the woodwork. Likewise, in a more operational register, we must deal with the issues of managing a worksite on a functioning site that is open to the public in an urban context with a strong heritage value.

Château of Versailles: startup of restoration work on the royal chapel

In May 2017, restoration work on the chapel of the Château of Versailles was launched.

Built by Jules-Hardouin-Mansard between 1687 and 1710, it rises over three levels that an attic floor covered with slate and initially gilded lead crowns. Its imposing glasswork as well as the scope and richness of its sculpted décor, both inside and outside, make it one of the masterpieces of French religious art.

The project plans for the complete exterior restoration of the chapel. The roofs will be redone after the framework is straightened and consolidated. The decorative lead elements will be restored and their gilded finishing recovered. The exterior stone facings will be carefully cleaned and the most deteriorated stones will be replaced. The sculpted bas-reliefs and monumental statues, in a variable state of conservation, will be restored on a case-by-case basis, depending on the nature of the stone that composes them and their degree of alteration. Lastly, particular attention will be paid to the stained-glass windows as well as to their very elaborate ironwork. In conformity with the archival documents and early images, the ironwork will be regilded.


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The Mobilier national or the restoration of a 20th-century heritage building

In April 2017, startup of the worksite for the restoration of the exterior of the Perret Building.

Built in 1936 by August Perret to house the furniture storage of the Mobilier national, the building was listed as a historic monument in 1965. Suffering from pathologies due to the aging of the materials, the restoration of the exterior had become necessary.

A preliminary study, already carried out by 2BDM, permitted analyses and tests to be conducted in order to develop a restoration protocol for the old concrete. The altered concrete will be purged and repaired, with its smooth, roughened or grooved finish according to the case. The formerly smooth concrete that had become too eroded will be filled with a thin mortar in order to limit its porosity and to reestablish it in its role (drip moldings, window ledges…). A general cleaning will be done according to several methods: application of especially formulated cataplasms and graffiti and tag removal for white cement filler blocks, by cryogenics, micro-abrasion or pressurized hot-water cleaning on the concrete cast on site in gray cement.

Finishing work will be carried out on the facings for a patina application in order to recover the coloring that Perret had applied on the concrete and to match whatever has remained in place.

Saint-Eucaire church in Metz: a four-phase worksite is completed

In March 2017, a four-phase worksite, conducted by 2BDM, was finished.

Protected as a historic monument, the Sainte-Eucaire parish church was rebuilt between the 12th and 15th centuries on the site of a 8th-century paleo-Christian basilica. A gem of medieval architecture in Metz from the Romanesque to the Flamboyant Gothic period at the end of the 15th century, the Saint-Eucaire church has benefited from several restoration programs, notably the restoration of its framework and roofs, already conducted by Christophe Bottineau, in 2008.

The diagnostic that 2BDM established in 2011 concerning the exterior façades and the stained-glass windows brought to light their very relative state of conservation, the deterioration of certain materials, the wearing of the stones and the separation of the surface coatings.

The restoration campaign that has just been completed has permitted, on one hand, the restoration of the masonry elevations and, on the other, that of the dismounted/remounted stained-glass windows accompanied by the installation of double windows to protect the stained glass.

The second life of the Freyssinet Hall

In February 2017, the restoration and interior layout of Freyssinet hall, located at the heart of the ZAC Paris-Rive gauche neared its end.

At the end of the 1920s, the engineer Eugène Freyssinet showed his audacity by building a hall in prestressed concrete, a newly invented process. The hall was composed of three naves 310 m long with a width of 72 m. The two exterior naves were flanked by canopies hung from one side to the other for a total width of 90 m.

The former parcels building of the Austerlitz train station, threatened with demolition, became a listed historic monument in 2012. Two years later, the concrete building was bought by Xavier Niel to create a business incubator in it of 1 000 start up. If the global renovation project was entrusted to Jean-Michel Wilmotte2BDM was responsible for the project management on concrete structures.

The concrete structure was relatively well-preserved, but to add the weight of the mezzanines to it, the structure had to be strengthened by inserting micro-piles under the existing posts. The concrete was either painted or dirty, broken, flaked, filled, etc. After cryogenic cleaning, a facing mortar, created for the operation, was used on the building’s structures. The remaining stains were lightly patinated and made homogeneous. 

Restoration of the Verger pavilion in Rambouillet, 2BDM prizewinner

In January 2017, 2DBM won the invitation to tenders for the restoration of the Verger pavilion and its décors in Rambouillet.

A listed historic monument, the palace of the king of Rome constitutes a remarkable heritage ensemble that includes the Verger pavilion. Built in the late 18th century, the pavilion has had a rich and eventful history and has turned out to be one of the hidden treasures of the royal estate of Rambouillet. As our agency conducted a diagnosis on the building in 2015, we will manage the operation using the recommendations retained at the time in order to make the original pavilion comprehensible by enabling it to recover its status as a garden pavilion. It is also the occasion to once again provide the interior décor with all its justification, to allow the public to discover its interest and in this way make the garden of the palace of the king of Rome a major interest center.

In Paris, reopening of the medieval kitchens of the Conciergerie

In November 2016, the restoration work and the upgrading of safety standards for the Conciergerie kitchens were accepted

Built in the 14th century, the only remaining part of the pavilion of the Palais de la Cité kitchens is the ground-floor spaces, intended for personnel. With a square plan, ribbed vaults and four corner fireplaces, the kitchens were closed for 14 years after structural movements were observed in 2002.

In 2016, the operation conducted by 2BDM, whose contracting authority was the Centre des monuments nationaux, made it possible, on one hand, to analyze the structural issues and, on the other, to upgrade safety standards and restore the kitchens so that they could be reopened to the public. The work enabled the homogenization of the masonry, the restoration of the columns, facings, woodwork, metalwork and ironwork and the upgrading of the electricity networks to current standards.

The stabilization of the structures will be definitively treated at a later date.



Study, restoration and promotion of the Mâcon heritage, 2BDM prizewinner

In July 2016, 2BDM won the single-tenderer project management framework agreement for the study, restoration and promotion of the historic heritage belonging to the city of Mâcon.

The buildings concerned by this framework agreement are: the city hall, the wood house, the Saint-Vincent cathedral, the archeological site of the Saint-Clément church, the Saint-Jean-de-Loché church, the Vieux-Saint-Vincent church, the former Lamartine high school, the Cordeliers convent, the Hôtel de Senecé and the Musée des Ursulines.

The first major contract was the restoration of the Saint-Vincent cathedral. Built between 1808 and 1818, it was listed as a historic monument in 1994.

After the restoration of the two towers and the peristyle in 2008, the focus today is to solve the problem of the deterioration of the façades, framework and roofs.


Main Passenger Hall of the Austerlitz train station: light recovered

In June 2016, the first section of the restoration work of the Main Passenger Hall of the Austerlitz train station was completed.

The densification of this 280-meter-long hall, built in 1869, as well as the accumulation of soot over a century and a half, overcame the splendor of its glass cage, which gradually became invisible for passersby.

In the general framework of the restoration of the Austerlitz train station (2010-2022), which notably aims at the reappropriation of the space by users and operators, a complete restoration of the Main Passenger Hall was programmed. The operation, conducted by the AREP, made it possible to completely repair the metal framework over 50 meters. The worked wood ensembles of the façades were replaced and the dressed stone restored. Paneling and roof laths, that have a bracing function, were strengthened as needed, as was the tympanum. A new roof composed of zinc and glass elements was reinstalled, enabling natural light to once again enter the hall.  2BDM acted as a consultant for the AREP in the framework of this operation. Working especially on the issues of restoring the stone, woodwork and roofs, we contributed to the restitution of the hall’s original 1869 condition.

The Rubans du Patrimoine 2016 – the Perrecy-les-Forges worksite distinguished

In June 2016, the restoration of the former Saint-Pierre-Saint-Benoît de Perrecy-les-Forges prioral church, in the Saône-et-Loire department, was distinguished by the “Rubans du Patrimoine” national prize. This competition has promoted, for 22 years, exemplary worksites that restore and enhance early architectural heritage.

The Perrecy-les-Forges church is among the major monuments of the Romanesque heritage in Burgundy. Following the founding of the priory in the 11th century, then the completion of an enormous church in the 12th century, many interventions succeeded each other in the 15th to the 19th century, giving the ensemble a great archeological richness.

In 2009, major problems in the nave resulted in the closing of the church. The protection-restoration operation led us to dismount the completely disorganized framework and to restore and restitute the lower tie beams to support the work. The southern side aisles were also consolidated to house a flying buttress system for the deteriorated eaves wall, thanks to a wood beam concealed under the paneling of the vault of the side aisle and transferring the stress to the buttresses of the south wall, now masking the reinforced concrete piers anchored by micro-piles. After these structural repairs, the church benefited from an enhancement treatment. The interior facings were restored respecting the old skins resulting in the discovery of precious archeological evidence, as well as stained-glass windows. Adapted lighting finalized this operation, revealing all the interest in this building.

École militaire: launch of the restoration of the principal building

In May 2016, the worksite for the restoration of the exterior of the principal building of the École militaire in Paris was launched. 2BDM handled the project management.

The principal building of the École militaire (also called building 001) is part of a remarkable urban project as it faces the Champ-de-Mars, which is in its axis, consequently completing its composition. Built by Ange-Jacques Gabriel between 1764 and 1773, it is composed of a central pavilion and two lateral wings set at right angles on the courtyard side.

A study carried out by 2BDM in 2012 on the entire École militaire site revealed the extent of the difficulties, notably on the principal building. It presented advanced deterioration on its facings and major permeability problems on its roofs. On this basis, a restoration program for the building was established in six sections; the work should continue until 2025.

The Dufour pavilion is now the access to the Château of Versailles

In February 2016, the Dubour pavilion welcomed its first visitors. Its renovation, combined with that of the Old Wing, was part of the “Grand Versailles” master plan launched in 2003. As a result, the Dufour pavilion became the sole access space to the château for individual visitors, as well as its exit. The new volumes created by this particularly complex operation made it possible to reinforce the public’s reception with the creation of an information space, a waiting area, a checkroom, an access and ticket control space, a counter for returning audio guides and restrooms

The operation’s projection management, designed as a genuine partnership, was handled by the Dominique Perrault Architecture (DPA) and 2BDM agencies. DPA was in charge of civil engineering on the superstructure (apart from the historic monument) and the interior layout. 2BDM was responsible for civil engineering on the infrastructure, the restoration of remarkable interior spaces, façades, roofs and exterior woodwork.

This project drew its historic foundation from the modernization plan of the Château of Versailles imagined by Ange-Jacques Gabriel at the end of the 18th century. The Dufour and Gabriel pavilions were to be the château’s entrance points. This intention of the Ancien Régime was cut short by the French Revolution. Over 200 years later, it has become concrete.

École militaire: building 13 restored

In February 2016, 2BDM finished the restoration of building 13 of the École militaire in Paris.

The worksite started in early 2014 made possible: the consolidation of the foundations with underpinning, repair of the flooring and roofing structure, the restoration and consolidation of the framework, the complete renovation of the roofs in flat tiles, including the repair of the chimney stacks, the restoration of the old compositions of the façades with the cleaning and replacement of deteriorated stones, the repair of the lime plaster, the cleaning and consolidation of the sculpted group on the pediment, the repair of the woodwork, the repair of the large central staircase and the installation of lanterns for exterior lighting.

Bonifacio: a 10-year-long restoration at the Sainte-Marie-Majeure church

In January 2016, 2BDM completed the third phase of the restoration of the Sainte-Marie-Majeure church of Bonifacio.

This restoration, carried out under the contracting authority of the city of Bonafacio, was initiated in 2006 by a preliminary study.

The first phase concerned the consolidation of the bell tower and the restoration of the apse.

The second phase focused on the restoration of the roofs and the exterior façades.

The third phase, which was completed, was the restoration of the interiors, to repair all the deteriorated facings, restore certain altars and upgrade all the technical installations.


A last work phase will complete the restoration, with notably the last altars and the pulpit.

Versailles: the “Grand Commun” worksite is completed

 At the beginning of 2016, the renovation of the Grand Commun in Versailles was completed. Located a stone’s throw from the château, the Grand Commun, built between 1682 and 1686 by Jules Hardouin-Mansart, housed the services of the court and the staff apartments of the king’s officers. It will now house all the administrative services of the Établissement public du château du Versailles.

Right from the beginning of the work, in 2004, the main objective was to give all its architectural coherence back to this enormous quadrilateral of 24,000 m². A dismantling and asbestos removal campaign first made it possible to bring to light the original structures and volumes. The structures, masonry, framework and flooring were strengthened. An “energy pole” under the interior courtyard was created, bringing together the estate’s technical equipment. The façades were restored and the doorframes replaced, as well as the paving in the courtyard. The remarkable elements, notably the square corner staircases, the straight staircases and the French-style ceilings were strengthened, restored and enhanced. Lastly, the porch and its avant-corps on the rue de l’indépendance américaine were restored.

The interior layout of the building, treated in a contemporary fashion, was carried out by the architect Bernard Desmoulin.