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depiction:

DAm 05 b Reinforced concrete flat roof, non-ventilated (terrace structure)

 Ceiling, roof: flat or pitched roof exposed to outside air – not back-ventilated – heat flow ascending (BG1) – IBO benchmarks 2012
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0,104 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
B
mass 673,1 kg/m²
PENRT 1201 MJ/m²
GWP total -24,7 kg CO2/m²
AP 0,312 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Timber (525 kg/m³ - e.g. larch) - planed, technically dried 3,00 ¹ ¹ ² 1
2 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 5,00      
    49,8 cm (80%) Vertical air layer, heat flow up 46 < d <= 50 mm 5,00 ¹ ¹ ² 0
    12,8 cm (20%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 5,00 ¹ ¹ ² 0
3 homogene Schichthomogene Schicht Normal concrete without reinforcement (2200 kg/m³) 5,00 1,650 0,03 ² 7
4 homogene Schichthomogene Schicht Polyethylene (PE) vapour brake 0,04 0,500 0,00 ² 1
5 homogene Schichthomogene Schicht Abdichtung PE (Polyethylene (PE) sealing sheeting) 0,20 0,500 0,00 ² 7
6 homogene Schichthomogene Schicht Insulation cork (130 kg/m³) 42,00 0,045 9,33 14
7 homogene Schichthomogene Schicht Dampfsperre PE (Polyethylene (PE) vapour brake) 0,02 0,500 0,00 ² 1
8 homogene Schichthomogene Schicht Normal concrete with reinforcement 1 % (2300 kg/m³) 20,00 2,300 0,09 46
9 homogene Schichthomogene Schicht Clay plaster 1,50 0,810 0,02 1
    Rsi / Rse = 0,100 / 0,040  
    R' / R'' (max. relative error: 0,0%) = 9,614 / 9,614  
    building element 76,76   9,614 78
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