E_MH_Mounting_instructions_Skylux_Climalux
01/05/2020
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Load graphs gutter profiles
For roofs with plastic sheets
The graphs below can be used to determine the free span for each type of gutter (support). This is the distance
between your supports (posts) in function of the load and the depth (D) of your roof. The maximum bending is
1/200.
The load is related to the snow and wind load.
Practical example:
The roof has a width (B) of 4000 mm and a depth (D) of 3500 mm. The prescribed load is 500 N/m² (~ 50 kg/m²).
The roof is provided with muli-walled plastic sheets.
Determine the point in the “500 N/m² & 1/200” graph and select a gutter (support) above this point.
There are 3 possibilities according to the graph:
You can choose the gutter GXLX which allows for a free span length (P) of 6200 mm.
Or you can choose the gutter GX with reinforcement V823 which allows for a free span length (P) of 4380 mm.
Or you can choose the gutter GX with a maximux span length of 3730 mm. An additional post for support in the
middle is needed in this case.
The span is the distance (P) between the posts. In this example, the width can be 4500 mm where the free span
(P) between the posts = 4500 – (2 x 110) = 4380 mm.
The bending in the middle with a load of 500 N/m² is 1/200 or 400/200 = 20 mm. Less if unloaded.
The maximum deliverable length of the gutter profiles is 7 metres.
3000
4000
5000
6000
7000
8000
9000
10000
P
D
350 N/m² & 1/200
3000
4000
5000
6000
7000
8000
9000
10000
P
D
500 N/m² & 1/200
2000
3000
4000
5000
6000
7000
8000
9000
P
D
750 N/m² & 1/200
2000
3000
4000
5000
6000
7000
8000
P
D
1000 N/m² & 1/200
D
D
D
D
GX
GX + V823
GXLX
GXLX + V1243
GDX
GDX + V14105