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depiction:


03a Steildach hinterlüftet - saniert (Holzfaser)

Ceiling, roof, 30°: Flat or pitched roof exposed to outside air – back-ventilated – heat flow ascending (BG1) – IBO benchmarks 2012
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A++
RL6
0,132 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
A
mass 123,1 kg/m²
PENRT 1005 MJ/m²
GWP total -79,1 kg CO2/m²
AP 0,280 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) 2,00 ¹ ¹ ² 11
2 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 3,00      
    17 cm (74%) Vertical air layer, heat flow up 26 < d <= 30 mm 3,00 ¹ ¹ ² 0
    6 cm (26%) Laminated timber, glued external use (475 kg/m³ - e.g. spruce/fir) 3,00 ¹ ¹ ² 2
3 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 6,00      
    25 cm (81%) Vertical air layer, heat flow up 56 < d <= 60 mm 6,00 ¹ ¹ ² 0
    6 cm (19%) Laminated timber, glued external use (475 kg/m³ - e.g. spruce/fir) 6,00 ¹ ¹ ² 2
4 homogene Schichthomogene Schicht Unterdachbahn (Building paper) 0,10 0,170 0,01 ² 1
5 homogene Schichthomogene Schicht Plywood and veneer timber for interior use (600 kg/m³) 2,40 0,120 0,20 11
6 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 16,00      
    34 cm (81%) Wood fibre WF-W (50 kg/m³) 16,00 0,042 3,81 6
    8 cm (19%) Laminated timber, glued internal use (475 kg/m³ - e.g. spruce/fir) 16,00 0,120 1,33 5
7 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 8,00      
    45 cm (85%) Wood fibre WF-W (50 kg/m³) 8,00 0,042 1,90 3
    8 cm (15%) Laminated timber, glued internal use (475 kg/m³ - e.g. spruce/fir) 8,00 0,120 0,67 2
8 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 8,00      
    45 cm (85%) Wood fibre WF-W (50 kg/m³) 8,00 0,042 1,90 3
    8 cm (15%) Laminated timber, glued internal use (475 kg/m³ - e.g. spruce/fir) 8,00 0,120 0,67 2
9 homogene Schichthomogene Schicht OSB boards (650 kg/m³) 1,50 0,130 0,12 4
10 homogene Schichthomogene Schicht Polyethylene (PE) vapour brake 0,02 0,500 0,00 ² 1
11 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 4,50      
    56,5 cm (90%) Wood fibre WF-W (50 kg/m³) 4,50 0,042 1,07 2
    6 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 4,50 0,120 0,38 0
12 homogene Schichthomogene Schicht Plywood and veneer timber for interior use (375 kg/m³) 1,50 0,100 0,15 4
    Rsi / Rse = 0,100 / 0,100  
    R' / R'' (max. relative error: 5,4%) = 7,994 / 7,179  
    building element 53,02   7,587 58

¹ not relevant
² layer is OI-relevant from BG1
³ U value (Heat transfer coefficient) calculated according to ÖNORM EN ISO 6946. A++: U-Werte im Bereich der Markierung A++ (0,12 W/m²K) sind notwendig, um derartige Gebäude zu errichten. RL6: OIB Richtlinie 6 (April 2007); In ganz Österreich seit 1.1.08 verbindlich festgelegter max. U-Wert (0,20 W/m²K) für alle Neubauten sowie instandgesetzte bzw. erneuerte Bauteile.
4 For the OI class, the U-value of the component is taken into account in addition to the ecological key figures