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depiction:

Efu 03 b Slab foundation, insulated lower side, wood floor on raft batten

 Floor: in contact with ground – heat flow descending (BG1) – IBO benchmarks 2012
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0,150 W/m²K
A++
A+
A
B
C
D
E
F
G
OI-Class (BG1)4
D
mass 887,2 kg/m²
PENRT 2168 MJ/m²
GWP total 103 kg CO2/m²
AP 0,476 kg SO2/m²
no. type layer d
cm		 λ
W/mK		 R
m²K/W		 ΔOI3
pts/m²
1 homogene Schichthomogene Schicht Wooden floor, solid wood 2,00 0,160 0,13 ¹ 1
2 inhomogene Schichtinhomogene Schicht inhomogeneous (parts transverse) 5,00      
    49,8 cm (80%) Sheep’s wool - insulation felt (37 kg/m³) 5,00 0,040 1,25 2
    12,8 cm (20%) Timber (475 kg/m³ - e.g. spruce/fir) - rough, technically dried 5,00 0,120 0,42 0
3 homogene Schichthomogene Schicht Wood fibre WF-T (130 kg/m³) 2,00 0,046 0,43 2
4 homogene Schichthomogene Schicht Dampfbremse PE (Polyethylene (PE) sealing sheeting) 0,02 ² ² ¹ 1
5 homogene Schichthomogene Schicht Normal concrete with reinforcement 1 % (2300 kg/m³) 20,00 2,300 0,09 46
6 homogene Schichthomogene Schicht Polyethylene (PE) sealing sheeting 0,04 ² ² ¹ 1
7 homogene Schichthomogene Schicht Schaumglasplatten (Foamglas T4+) 20,00 0,041 4,88 68
8 homogene Schichthomogene Schicht Polymer bitumen sealing sheeting 1,00 ² ² ¹ 25
9 homogene Schichthomogene Schicht Lean concrete / cast and compressed concrete 5,00 ² ² ¹ 4
10 homogene Schichthomogene Schicht Building paper 0,03 ² ² ¹ 0
11 homogene Schichthomogene Schicht Fillings made of sand, gravel, grit (1800 kg/m³) 15,00 ² ² ¹ 3
12 homogene Schichthomogene Schicht PP fleece 0,02 ² ² ¹ 0
    Rsi / Rse = 0,170 / 0,000  
    R' / R'' (max. relative error: 1,3%) = 6,757 / 6,583  
    building element 70,11   6,670 153
¹ layer is OI-relevant from BG1
² not relevant
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