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DAm 01 b Reinforced concrete steeply-pitched roof

Ceiling, roof, 30°: flat or pitched roof exposed to outside air – back-ventilated – heat flow ascending (BG1) – IBO benchmarks 2012
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0,111 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
B
mass 528,4 kg/m²
PENRT 1265 MJ/m²
GWP total 35,2 kg CO2/m²
AP 0,267 kg SO2/m²
no. type layer d
cm
λ
W/mK
R
m²K/W
ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Clay roof tiles (2000 kg/m³) 2,50 ¹ ¹ ² 14
2 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 3,00      
    53,1 cm (85%) Vertical air layer, heat flow up 26 < d <= 30 mm 3,00 ¹ ¹ ² 0
    9,4 cm (15%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 3,00 ¹ ¹ ² 0
3 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 5,00      
    56,3 cm (90%) Vertical air layer, heat flow up 46 < d <= 50 mm 5,00 ¹ ¹ ² 0
    6,3 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 5,00 ¹ ¹ ² 0
4 homogene Schichthomogene Schicht Dachauflegebahn PE, diffusionsoffen (Polyethylene (PE) roof underlay - open to diffusion) 0,02 0,500 0,00 ² 1
5 homogene Schichthomogene Schicht Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 2,40 0,120 0,20 0
6 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 4,00      
    58,5 cm (94%) Hemp fibre insulation (41 kg/m³) 4,00 0,045 0,89 2
    4 cm (6%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 4,00 0,120 0,33 0
7 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 16,00      
    61,2 cm (98%) Hemp fibre insulation (41 kg/m³) 16,00 0,045 3,56 10
    1,3 cm (2%) OSB boards (650 kg/m³) 16,00 0,130 1,23 1
8 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 16,00      
    61,2 cm (98%) Hemp fibre insulation (41 kg/m³) 16,00 0,045 3,56 10
    1,3 cm (2%) OSB boards (650 kg/m³) 16,00 0,130 1,23 1
9 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 4,00      
    58,5 cm (94%) Hemp fibre insulation (41 kg/m³) 4,00 0,045 0,89 2
    4 cm (6%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 4,00 0,120 0,33 0
10 homogene Schichthomogene Schicht Normal concrete with reinforcement 1 % (2300 kg/m³) 18,00 2,300 0,08 41
11 homogene Schichthomogene Schicht Clay plaster 1,50 0,810 0,02 1
    Rsi / Rse = 0,100 / 0,100  
    R' / R'' (max. relative error: 0,5%) = 9,035 / 8,946  
    building element 72,42   8,990 84

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