16
OPALIA, PARIS
OPALIA IN FIGURES
Max height: 31 m Highest floor level: 28.47 m Average floor span:
4.84 m + 6.66 m = 11.5 m Green roof area:
approx 100 m² over three levels Plot size: 2,046 m² GFA: 6,078 m² Parking spaces: 103 Floor height (overall): 3.55 m²
been done before on a wooden building, so we’ve had some hoops to jump through with the planning authorities.” He continues: “A double-skin facade means traditional double-glazing then outside of that another single-glazed element, which creates a buffer zone. In that zone, if it’s designed properly, you can increase the thermal performance of your building by ventilating or not ventilating that zone. In this case what it mostly does is protect the solar protection system – in this case a venetian blind system – inside the buffer zone.”
Maximum transparency
All that glazing suggests the result would be something of a glass box, but Steven points
out: “The nice thing about the double-skin facade is that the outer layer of glazing doesn’t need the coloured or slightly mir- rored treatment used to make it reflective, which results in maximum transparency and means you’re going to see the wooden cladding very clearly.”
The whole exterior of the building is clad in Douglas pine, sourced from the Morvan forest about two hours from Paris. There is no need for similar glazed protection to the rear of the building but the exposed timber cladding is treated for protection against the elements.
The noise and pollution produced by around 270,000 cars per day on the inner ring road was another design challenge for Art&Build to consider. Ware reveals: “We
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ADF OCTOBER 2016
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