back Open print view Show page as PDF

depiction:

DA01b_

 Ceiling, roof, 25°: flat or pitched roof exposed to outside air – back-ventilated – heat flow ascending (BG1) – IBO benchmarks 2020
login and edit copy of this building element
0,143 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
A+
mass 134,8 kg/m²
PENRT 930 MJ/m²
GWP total -66,1 kg CO2/m²
AP 0,231 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Betondachsteine (Cement roofing tile / concrete roofing tile (2100 kg/m³)) 2,61 ¹ ¹ ² 9
2 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 3,00      
    57,5 cm (92%) Vertical air layer, heat flow up 26 < d <= 30 mm 3,00 ¹ ¹ ² 0
    5 cm (8%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 3,00 ¹ ¹ ² 0
3 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 5,00      
    57,5 cm (92%) Vertical air layer, horizontal heat flow 45 < d <= 50 mm 5,00 ¹ ¹ ² 0
    5 cm (8%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 5,00 ¹ ¹ ² 0
4 homogene Schichthomogene Schicht Unterdeckplatte Holzfaser (Wood fibre WF-WD (250 kg/m³)) 2,20 0,057 0,39 5
5 homogene Schichthomogene Schicht Holzfaserdämmplatte (GUTEX Thermosafe-homogen) 24,00 0,043 5,58 22
6 homogene Schichthomogene Schicht Abdichtungsbahn (Polyethylene (PE) sealing sheeting) 0,00 0,500 0,00 ² 0
7 homogene Schichthomogene Schicht Brettsperrholz BBS (5-lagig) (binderholz Brettsperrholz BBS (Fichte)) 10,00 0,120 0,83 16
    Rsi / Rse = 0,100 / 0,100  
    R' / R'' (max. relative error: 0,0%) = 7,001 / 7,001  
    building element 46,81   7,001 51
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