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depiction:

DAm 07 a Reinforced concrete flat roof, duo roof

 Ceiling, roof: flat or pitched roof exposed to outside air – not back-ventilated – heat flow ascending (BG1) – IBO benchmarks 2012
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0,099 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
D
mass 592,0 kg/m²
PENRT 1908 MJ/m²
GWP total 111 kg CO2/m²
AP 0,354 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Fillings made of sand, gravel, grit (1800 kg/m³) 6,00 ¹ ¹ ² 1
2 homogene Schichthomogene Schicht PP fleece 0,02 ¹ ¹ ² 0
3 homogene Schichthomogene Schicht XPS–G 30 > 180 mm (32 kg/m³) 18,00 0,042 4,29 34
4 homogene Schichthomogene Schicht Polymer bitumen sealing sheeting 0,78 0,230 0,03 ² 19
5 homogene Schichthomogene Schicht EPS-W 25 (23 kg/m³) 20,00 0,036 5,56 27
6 homogene Schichthomogene Schicht Normal concrete with reinforcement 1 % (2300 kg/m³) 20,00 2,300 0,09 46
7 homogene Schichthomogene Schicht Filler - gypsum filler 0,50 0,400 0,01 1
    Rsi / Rse = 0,100 / 0,040  
    R' / R'' (max. relative error: 0,0%) = 10,115 / 10,115  
    building element 65,30   10,115 129
¹ not relevant
² layer is OI-relevant from BG1
³ U value (Heat transfer coefficient) calculated according to ÖNORM EN ISO 6946.
4 For the OI class, the U-value of the component is taken into account in addition to the ecological key figures