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depiction:


AWl 05 a Box beam outside wall, rear ventilation

Wall: exposed to outside air – back-ventilated (BG1) – IBO benchmarks 2012
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0,124 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
A
mass 88,3 kg/m²
PENRT 669 MJ/m²
GWP total -43,3 kg CO2/m²
AP 0,261 kg SO2/m²
no. type layer (from inside to outside) d
cm
λ
W/mK
R
m²K/W
ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Gypsum plasterboard (900 kg/m³) 1,50 0,250 0,06 4
2 homogene Schichthomogene Schicht Gypsum plasterboard (900 kg/m³) 1,50 0,250 0,06 4
3 inhomogene Schichtinhomogene Schicht inhomogeneous (parts horizontal) 5,00      
    56,3 cm (90%) Rock wool MW(SW)-W (30 kg/m³) 5,00 0,042 1,19 4
    6,3 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 5,00 0,120 0,42 0
4 homogene Schichthomogene Schicht OSB boards (650 kg/m³) 1,80 0,130 0,14 4
5 inhomogene Schichtinhomogene Schicht inhomogeneous (parts vertical) 12,00      
    56,5 cm (90%) Rock wool MW(SW)-W (30 kg/m³) 12,00 0,042 2,86 9
    6 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 12,00 0,120 1,00 0
6 inhomogene Schichtinhomogene Schicht inhomogeneous (parts vertical) 14,00      
    59 cm (94%) Rock wool MW(SW)-W (30 kg/m³) 14,00 0,042 3,33 12
    3,5 cm (6%) OSB boards (650 kg/m³) 14,00 0,130 1,08 2
7 inhomogene Schichtinhomogene Schicht inhomogeneous (parts vertical) 4,00      
    56,5 cm (90%) Rock wool MW(SW)-W (30 kg/m³) 4,00 0,042 0,95 3
    6 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 4,00 0,120 0,33 0
8 homogene Schichthomogene Schicht Holzfaser halbhart (Plywood and veneer timber for interior use (600 kg/m³)) 1,60 0,120 0,13 7
9 inhomogene Schichtinhomogene Schicht inhomogeneous (parts vertical) 5,00      
    56,3 cm (90%) Vertical air layer, horizontal heat flow 45 < 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
10 homogene Schichthomogene Schicht Timber (525 kg/m³ - e.g. larch) - planed, technically dried 2,50 ¹ ¹ ² 1
    Rsi / Rse = 0,130 / 0,130  
    R' / R'' (max. relative error: 2,3%) = 8,248 / 7,872  
    building element 48,90   8,060 50

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