the roof (2) according to the present invention isdouble walled polylobu00e9e consisting of beams (a,(b), (c) inflatable and arranged side by side. the arch(2) includes at least one path (8a, 8b) deploymentor folding along which the beams are mountedsliding doors. each path (8a, 8b) of the deployment orfolding cross sealed beams (a),(b, c).
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