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Cross-section of standard configuration
[Additional views]
last update13.05.2013/hfa.plb
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Data sheet
flat roof: timber frame construction, ventilated, with dry lining
Performance rating
| Fire protection performance |
REI |
30 |
maximum span = 5 m; maximum load Ed,fi = 3,66 kN/mē Classified by IBS
|
| Thermal performance |
U [W/m²K] |
0,20 |
| Diffusion adequate |
adequate |
| mw,B,A [kg/m²] |
18,8 |
Calculated by HFA
|
| Acoustic performance |
Rw (C;Ctr) |
48 (-3;-8) |
| Ln,w
(Cl) |
– |
Assessed by TGM
|
| Sustainability* |
OI3Kon |
1,8 |
Calculated by IBO
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Register of building materials used for this application, cross-section
(from top to bottom, dimensions in mm)
| |
Thickness |
Building material |
λ |
μ min - max |
ρ |
c |
Reaction to fire |
| EN |
| A |
|
sheet metal roofing
or plastic roofing membrane |
|
|
7800 |
|
A1 |
| B |
24,0 |
spruce wood
closed cladding without spacing of cladding boards |
0,130 |
50 |
500 |
1,600 |
D |
| C |
80,0 |
spruce wood
counter battens (ventilation) |
0,130 |
50 |
500 |
1,600 |
D |
| D |
|
sarking membrane sd & le; 0,3m
|
|
|
1000 |
|
E |
| E |
22,0 |
softboard [045; 250]
|
0,045 |
5 |
250 |
2,100 |
E |
| F |
200,0 |
finger-jointed solid construction timber
(80/*; e=800) |
0,130 |
50 |
500 |
1,600 |
D |
| G |
200,0 |
glass wool [0,0040; R=16]
|
0,040 |
1 |
16 |
1,030 |
A1 |
| H |
|
vapour barrier sd≥ 2m
|
|
|
1000 |
|
|
| I |
50,0 |
spruce wood
cross battens (50/80;a=400) |
0,130 |
50 |
500 |
1,600 |
D |
| J |
|
without insulation |
|
|
|
|
|
| K |
12,5 |
gypsum fibre board
or |
0,320 |
21 |
1000 |
1,100 |
A2 |
| K |
12,5 |
gypsum plasterboards with improved properties at high temperatures (fire)
|
0,250 |
10 |
800 |
1,050 |
A2 |
* Details of sustainability rating
* Mass per unit area
m
[kg/m²] |
calculation based on |
| 33,9 |
gypsum fibre board |
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