back Open print view Show page as PDF

depiction:

DAl 04 b 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
0,109 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
A
mass 78,2 kg/m²
PENRT 995 MJ/m²
GWP total -25,9 kg CO2/m²
AP 0,227 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Aluminiumblech, pulverbeschichtet (Aluminium sheeting, powder-coated) 0,08 ¹ ¹ ² 18
2 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 3,00      
    56,3 cm (90%) Vertical air layer, heat flow up 26 < d <= 30 mm 3,00 ¹ ¹ ² 0
    6,3 cm (10%) 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) 8,00      
    56,3 cm (90%) Vertical air layer, horizontal heat flow 75 < 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
4 homogene Schichthomogene Schicht Wood fibre WF-WD (250 kg/m³) 2,40 0,057 0,42 5
5 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 4,00      
    56,5 cm (90%) Hemp fibre insulation (41 kg/m³) 4,00 0,045 0,89 2
    6 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, air-dried 4,00 0,120 0,33 0
6 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 20,00      
    59,6 cm (95%) Hemp fibre insulation (41 kg/m³) 20,00 0,045 4,44 13
    2,9 cm (5%) OSB boards (650 kg/m³) 20,00 0,130 1,54 2
7 inhomogene Schichtinhomogene Schicht inhomogeneous (parts parallel to the eaves) 12,00      
    56,5 cm (90%) Hemp fibre insulation (41 kg/m³) 12,00 0,045 2,67 7
    6 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 12,00 0,120 1,00 0
8 homogene Schichthomogene Schicht OSB boards (650 kg/m³) 1,80 0,130 0,14 4
9 inhomogene Schichtinhomogene Schicht inhomogeneous (parts normal to the eaves) 5,00      
    56,3 cm (90%) Isolena Schafwolle, Optimal, 18 kg/m³ 5,00 0,043 1,16 1
    6,3 cm (10%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 5,00 0,120 0,42 0
10 homogene Schichthomogene Schicht Gypsum plasterboard (900 kg/m³) 1,25 0,250 0,05 3
11 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: 1,9%) = 9,342 / 8,994  
    building element 58,78   9,168 59
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