back Open print view Show page as PDF

depiction:

DAl 04 a Box beam steeply-pitched roof

 Ceiling, roof, 30°: flat or pitched roof exposed to outside air – back-ventilated – heat flow ascending (BG1) – IBO benchmarks 2012
login and edit copy of this building element
0,096 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
A
mass 80,9 kg/m²
PENRT 960 MJ/m²
GWP total -25,5 kg CO2/m²
AP 0,273 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Aluminium sheeting 0,08 ¹ ¹ ² 16
2 homogene Schichthomogene Schicht Strukturmatte PP (PP fleece) 0,19 ¹ ¹ ² 3
3 homogene Schichthomogene Schicht Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 2,40 ¹ ¹ ² 0
4 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 8,00      
    56,3 cm (90%) Vertical air layer, heat flow up 76 < d <= 80 mm 8,00 ¹ ¹ ² 0
    6,3 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 8,00 ¹ ¹ ² 0
5 homogene Schichthomogene Schicht Porous bituminised wood fibreboard (250 kg/m³) 2,40 0,057 0,42 6
6 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 4,00      
    56,5 cm (90%) Glass wool MW(GW)-W (18 kg/m³) 4,00 0,038 1,05 3
    6 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 4,00 0,120 0,33 0
7 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 20,00      
    59,6 cm (95%) Glass wool MW(GW)-W (18 kg/m³) 20,00 0,038 5,26 14
    2,9 cm (5%) OSB boards (650 kg/m³) 20,00 0,130 1,54 2
8 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 12,00      
    56,5 cm (90%) Glass wool MW(GW)-W (18 kg/m³) 12,00 0,038 3,16 8
    6 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 12,00 0,120 1,00 0
9 homogene Schichthomogene Schicht OSB boards (650 kg/m³) 1,80 0,130 0,14 4
10 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 5,00      
    56,3 cm (90%) Glass wool MW(GW)-W (18 kg/m³) 5,00 0,038 1,32 3
    6,3 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 5,00 0,120 0,42 0
11 homogene Schichthomogene Schicht Gypsum plasterboard (900 kg/m³) 1,25 0,250 0,05 3
12 homogene Schichthomogene Schicht Gypsum plasterboard (900 kg/m³) 1,25 0,250 0,05 3
    Rsi / Rse = 0,100 / 0,100  
    R' / R'' (max. relative error: 2,6%) = 10,706 / 10,156  
    building element 58,37   10,431 64
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