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Multi-Purpose Hall | Aurillac, France

9041 Views 47 Replies 30 Participants Last post by  bozenBDJ

London architects Brisac Gonzalez have completed a multi-purpose hall at Aurillac in France.The space can be used for concerts, sports events, trade shows and theatrical productions.

Aurillac is at the edge of France’s Massif Central mountain region. The site is situated near the city’s main train station, an area that is under regeneration to provide a stronger link with the city’s historic centre.

The building is a new venue for theatre, concerts, fairs and sports events. It will contain retractable seating and demountable stage for versatility. The main space will be able to accommodate up to 4500 people during performances.

Three ribbons of concrete that vary in shape and texture define the building. Their juxtaposition delineates the different zones of the building: entry, storage and back of house facilities.

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The Brisac Gonzalez design, which was realized in December, comprises three volumes that Gonzalez refers to as ribbons, and which total approximately 56,700 square feet. Although these forms do not echo the mountainscape literally, they evoke the tectonics that produced Massif Central. In plan, the entryway is reminiscent of a plume, emerging from the building base and fanning outward; the base itself is rectilinear, and contains the auditorium as well as storage and back-of-house spaces like the loading dock. Above this pairing sits the third volume, representing the double-height volume of the 4,500-seat auditorium. This form bows slightly inward on its sides, and the architects shifted it from center, creating a slight tension by cantilevering it from the plinth asymmetrically.

“I would say that we like to challenge accepted building typologies,” Gonzalez says of his studio’s growing portfolio of work. That is also the case with Aurillac, he explains. “It is often the case that these types of buildings are characterized by a single expressive gesture usually legible from afar. Yet closer, these buildings reveal little else—they often lack articulation. We wanted the building to read at different scales. The ribbons articulate the building’s ‘natural heroic scale’ from afar, while the shape and textures of the ribbons give the building a different reading at close range.”

The image brought to mind is that of sails pulled taut — a gesture oriented inward, in marked contrast to the rangy projections of the lower level. Driving around the site, the restless interplay of the two geometries proves particularly animated. This is a building conceived to be read at distance and at speed.

It is at night that this characteristic is felt most vividly. Coloured lights set behind the GRC sheath transform the building into a beacon. The pyramidal glass bricks amplify the level of illumination much like the Fresnel lenses of a lighthouse, while the dark painted concrete of the lower level recedes from view. The acts booked to perform at Le Prisme are nothing if not diverse — French black metal group Astaroth one night, the Glenn Miller tribute band the next. The provision of 24 circuits allows the coloured lights to be programmed in hundreds of combinations, allowing the building to be customised in response to whoever is using it.

é mesmo, Tony ! Super...!
A ribbon of precast concrete panels inlaid with glass blocks envelopes a new hall in the Auvergne region of central France. Essentially a black box, the 4,500-seat hall will be used for theatre, concerts, fairs and sports events. The ribbon of back-lit panels gives the building an identity and maintains a scale commensurate with its function.

Up to mid-height the hall has a structure of in-situ concrete walls which are exposed internally. Above this, a precast system of T-shaped columns at 11m centres and 250mm-thick reinforced concrete wall panels takes over.

Roof trusses spanning the full 40m width of the hall span on to each column. The trusses sit on elastomeric pads to isolate them acoustically from the walls. The roof itself acts as an acoustic damper.

A standard insulated metal deck roof is raised off the purlins on brackets, with a second layer of mineral wool acoustic insulation beneath. The gap between the two is ventilated to prevent condensation and the junction with the walls is sealed.

Externally, the upper half of the building is clad in a 9m-high band of precast glass reinforced concrete panels set out in long curves. Each 50mm-thick panel is reinforced in two directions with stainless-steel rods to avoid future corrosion problems.The panels are inlaid with pyramidal glass blocks with a Fresnal lens surface which both reflects and refracts light.

The joints between the panels are sealed with rubber wiper seals to prevent light leakage. During the day the sun glints off the white concrete and outer faces of the blocks, while at night the facçades transform into shimmering curtains of coloured light.

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vamos Pikodermou......... no sea ud tan amarrete !


Intresting to see...the new french architecture....

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