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depiction:

KDu 01 b Solid basement ceiling slab, insulated lower side

 Floor: exposed to unheated parts of buildings – heat flow descending (BG1) – IBO benchmarks 2012
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0,438 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
C
mass 670,6 kg/m²
PENRT 952 MJ/m²
GWP total 68,9 kg CO2/m²
AP 0,260 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Multi-layer parquet 1,20 0,160 0,08 ¹ 12
2 homogene Schichthomogene Schicht Adhesive - artificial resin 0,10 0,900 0,00 ¹ 2
3 homogene Schichthomogene Schicht Cement and cement flowing screed (1800 kg/m³) 5,00 1,100 0,05 8
4 homogene Schichthomogene Schicht Building paper 0,09 0,170 0,01 ¹ 0
5 homogene Schichthomogene Schicht Wood fibre WF-W (130 kg/m³) 3,60 0,046 0,78 4
6 homogene Schichthomogene Schicht Fillings made of sand, gravel, grit (1800 kg/m³) 5,00 0,700 0,07 1
7 homogene Schichthomogene Schicht Normal concrete with reinforcement 1 % (2300 kg/m³) 20,00 2,300 0,09 46
8 homogene Schichthomogene Schicht Schafwolle (Isolena Schafwolle, Optimal, 18 kg/m³) 3,00 0,043 0,70 1
9 homogene Schichthomogene Schicht Wood wool panel WWH magnesite-bonded (550 kg/m³) 2,50 0,140 0,18 3
additional materials (thermally not relevant): (quantity per m² building element)
1,1 kgDeckenprofile gesamt (Steel sheet, galvanised)² 3
    Rsi / Rse = 0,170 / 0,170  
    R' / R'' (max. relative error: 0,0%) = 2,284 / 2,284  
    building element 40,49   2,284 78
¹ layer is OI-relevant from BG1
² layer is OI-relevant from BG3
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