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depiction:

ADm 01 b Reinforced concrete ceiling slab above outside air, spacer floor

 Floor: exposed to outside air – not back-ventilated – heat flow descending (BG1) – IBO benchmarks 2012
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0,098 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)³
A
mass 332,3 kg/m²
PENRT 1094 MJ/m²
GWP total 36,3 kg CO2/m²
AP 0,262 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Holzboden, Vollholz Nadel (Solid parquet) 2,00 0,160 0,13 ¹ 19
2 inhomogene Schichtinhomogene Schicht inhomogeneous (parts transverse) 2,40      
    5,6 cm (9%) Vertical air layer, heat flow down 21 < d <= 25 mm 2,40 0,128 0,19 0
    56,9 cm (91%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 2,40 0,120 0,20 0
3 inhomogene Schichtinhomogene Schicht inhomogeneous (parts transverse) 5,00      
    50 cm (80%) Isolena Schafwolle, Optimal, 18 kg/m³ 5,00 0,043 1,16 1
    12,5 cm (20%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 5,00 0,120 0,42 0
4 homogene Schichthomogene Schicht Wood fibre WF-W (130 kg/m³) 6,00 0,046 1,30 7
5 homogene Schichthomogene Schicht Concrete concave ceiling (1200 kg/m³) 20,00 1,000 0,20 15
6 homogene Schichthomogene Schicht Mineral adhesive 0,50 1,000 0,01 3
7 homogene Schichthomogene Schicht Mineral thermal insulating panel (112 kg/m³) 32,00 0,044 7,27 31
8 homogene Schichthomogene Schicht Silicate plaster (without synthetic resin additive) 0,50 0,800 0,01 3
    Rsi / Rse = 0,130 / 0,040  
    R' / R'' (max. relative error: 0,7%) = 10,287 / 10,138  
    building element 68,40   10,213 77
¹ layer is OI-relevant from BG1
² U value (Heat transfer coefficient) calculated according to ÖNORM EN ISO 6946.
³ For the OI class, the U-value of the component is taken into account in addition to the ecological key figures