Sustainability, seismicity and quality, the major issues of the construction IGH wood




The wood constructions are the height and confront new challenges : fire safety, seismic risk, development of the local economy, quality of life inside buildings… so Many questions that will be discussed at the congress Woodrise, which will be held in Bordeaux in the month of September 2017. The opportunity for international experts to share their knowledge.
Bordeaux will be, in the next school year, the capital of the world, timber construction of medium to great height : it will be hosting the event Woodrise, the first international congress on the issue, jointly organised by Sector Construction Timber Management (France), FPInnovations (Canada) and Building Research Institute (Japan). Patrick Molinié, project leader at the technological institute FCBA, and that is at the initiative of these meetings, explains : “We wanted to see what was going on beyond R+6 elsewhere in the world. Currently, 50 projects of buildings of this height are committed. To carry out a ‘benchmarking’ we are focused particularly on Canada, Sweden and the United Kingdom“.
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The examples of canadian and japanese

 

The construction of wooden buildings in more than six floors is part of a context of strong changes, post-COP21, where the building seeks to reduce its carbon impact. “The wood will contribute to the development of the territories, in valuing its resources and limiting the transport for the urban densification, “says Patrick Molinié. Already widely used in the construction of surélévations and buildings relatively low, the material will now tackle greater heights. Pierre Lapointe, president of FPInnovations, explains : “We have projects in 18-storey cross-laminated timber in Quebec and British columbia. These rise buildings can combat urban sprawl. And the buildings are faster to construct while causing less of a nuisance“. He cited the example of the Brock Commons Building, which has pushed in just 3 months, thanks to the nine people mobilized on a construction project “zero waste” and that is “little noise“. The canadian specialist also speaks to the intelligent use of a material that is experiencing difficulties to export to the United States, who come to impose a tax on the timber, and the use of the CLT for the construction of road bridges of large dimensions (160 meters range of four arches) as in Mistissini (Quebec).

 

The great heights, therefore, constitute the next frontier, due to the nature of the material, light and soft. Shintaro Nishimura, director Europe for Suteki Home (Nice Corporation), reveals the situation in Japan : “The wood is ideal for sustainable construction. But, the fact of the seismicity, we are targeting a height of 4 to 6 storeys for buildings in CLT. The Building Research Institute carries out R&D work on safety and security (fire, earthquakes, typhoons) as well as on sustainability“. Data that will be valuable to all other nations, including Canada, whose Pacific coastline is exposed to this risk tectonics. In France, the studies focus on structures up to 30 levels in the numerical model, incorporating the aspects of vibration and acoustic. The goal : to convince the political and producers to go towards the engineering of the wood, yet too little to be taught, and to develop new concepts.

 

Develop demonstrators of IGH
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The notions of comfort of use and well live in a dwelling of wood will also be addressed by the international experts, in particular the scandinavians, the most advanced in the field. The exchanges that will take place at Woodrise will allow all actors to share their ideas and respond to the needs of a broader global trend. Shintaro Nishimura continues : “In Japan, the wood will be used in facade or interior layout, with this aspect of comfort“. Marcel Chouraqui, director-general of Adivbois, chimed in : “there are 36 buildings ‘live’ wood. All concepts incorporate a structure and interior fittings in wood. They will serve as a demonstrator of medium and large height“. In fact, two towers of 50 metres must be built at Bordeaux, of which the city is engaged in a true plan of development of wooden buildings, with 25,000 m2 provided per year. Eventually, the material wants to occupy between 20% and 25% of the construction market. Still to convince the decision-makers, investors and contractors…

 

The congress Woodrise :
From the 12th to the 15th September 2017 at the Palais des Congrès, Bordeaux (Gironde), will gather hundreds of experts from the construction wood to attend conferences and roundtables around four major objectives : to confirm the internationalization of the application of wood constructions in territories of low carbon, to demonstrate the scientific and technological excellence in the international field of medium-high height, to detect the opportunities of economic development and the conditions of their implementation, exploiting the expertise and national resources in a circular economy. The exhibition space is spread over 3.000 m2, and of the national delegations will represent eleven nations (Austria, Brazil, Canada, United States, Italy, Japan, Norway, New Zealand, United Kingdom, Sweden, Switzerland). There will be a day specially dedicated to the architecture (12 September) and various awards will be presented including the winners of the contest PUCA/Adivbois and those of the National Award of Wood Construction.




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