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depiction:

Efo 02 a Slab foundation, insulated upper side, wet screed (wet rooms)

 Floor: in contact with ground – heat flow descending (BG1) – IBO benchmarks 2012
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0,146 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
D
mass 1008,9 kg/m²
PENRT 2094 MJ/m²
GWP total 147 kg CO2/m²
AP 0,440 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Ceramic tiles (2300 kg/m³) 1,00 1,300 0,01 ¹ 22
2 homogene Schichthomogene Schicht Mineral adhesive 0,50 1,000 0,01 ¹ 3
3 homogene Schichthomogene Schicht Cement and cement flowing screed (2000 kg/m³) 6,00 1,330 0,05 11
4 homogene Schichthomogene Schicht Polyethylene foam (70 kg/m³) 1,00 0,050 0,20 3
5 homogene Schichthomogene Schicht EPS-P (30 kg/m³) 22,00 0,035 6,29 39
6 homogene Schichthomogene Schicht Aluminium bitumen sealing membrane 0,40 0,230 0,02 ¹ 14
7 homogene Schichthomogene Schicht Normal concrete with reinforcement 1 % (2300 kg/m³) 25,00 2,300 0,11 57
8 homogene Schichthomogene Schicht Building paper 0,03 ² ² ¹ 0
9 homogene Schichthomogene Schicht Fillings made of sand, gravel, grit (1800 kg/m³) 15,00 ² ² ¹ 3
10 homogene Schichthomogene Schicht PP fleece 0,02 ² ² ¹ 0
    Rsi / Rse = 0,170 / 0,000  
    R' / R'' (max. relative error: 0,0%) = 6,840 / 6,840  
    building element 70,95   6,840 153
¹ layer is OI-relevant from BG1
² not relevant
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