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1 trussed girder of 219 mm dia./20 mm and 140 mm dia./12.5 mm steel tubes 2 2 mm sheet aluminium 50 mm mineral-wool thermal insulation 400 mm reinforced concrete 3 100 mm layer of gravel two layers of 2 mm waterproof membrane 460 mm (max.) thermal insulation sealing layer, 1.5 mm vapour barrier 260 mm reinforced concrete 4 20/70 mm larch strips on 30/50 mm wood battens 50 mm melamine-foam sound insulation 5 panel: 19 mm fibrous plasterboard 120/60 mm laminated timber frame 120 mm cellulose thermal insulation 16 mm OSB 6 double glazing in larch frame (U=1.2 W/m2K): 6 mm toughened glass + 16 mm cavity + 8 mm lam. safety glass 7 22 mm lam. safety glass balustrade 30/45/5 mm stainless-steel channel handrail 8 window reveal, 340/25 mm larch-veneered composite wood board 9 25 mm louvred sunblind 10 double glazing in glazed larch frame (U=1.2 W/m2K): 6 + 4 mm float glass + 16 mm cavity 11 stepped insulating glass in glazed larch frame (U=1.2 W/m2K): 6 mm float glass with colour film on inside + 14 mm cavity + 4 mm float glass 12 8 mm toughened glass fascia with coloured screen printing on the outside clamping strip
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