X
= the required ballast is higher than will fit under the system. The system must be mechanically attached to the roof. Please contact Van der Valk Solar Systems.
* If you use tiles of different sizes and thus another weight, you need to adjust the number of tiles to get the right weight.
Panel: maximum dimensions 1800x1100 mm (21 kg)
Panel: maximum dimensions 2100x1100 mm (24 kg)
Windmap Sweden
Required ballast | Sweden
General
The ValkDouble® mounting system must be reinforced by means of tiles, which must be placed on the
indicated ballast foundations. In three steps you can easily calculate the required ballast;
• determine the wind area on the windmap
• choose the wind area and building height in the table
• you can now read the number of tiles / kg
Note 1: The extra ballast must be equally divided over the ballast foundations.
Note 2: The max. of 16 tiles can be placed for extra ballast (144 kg).
Building height
0 - 5
meter
5 - 7
meter
7 - 9
meter
9 - 12
meter
12 - 15
meter
22 m/s
11,0
23,0
31,0
42,0
51,0
kg
1,5
3,0
3,5
5,0
6,0
tiles
23 m/s
18,0
30,0
40,0
51,0
63,0
kg
2,0
3,5
4,5
6,0
7,0
tiles
24 m/s
25,0
38,0
48,0
64,0
81,0
kg
3,0
4,5
5,5
7,5
9,0
tiles
25 m/s
32,0
46,0
58,0
81,0
99,0
kg
4,0
5,5
6,5
9,0
11,0
tiles
26 m/s
39,0
55,0
74,0
98,0
118,0
kg
4,5
6,5
8,5
11,0
13,5
tiles
Building height
0 - 5
meter
5 - 7
meter
7 - 9
meter
9 - 12
meter
12 - 15
meter
22 m/s
20,0
33,0
44,0
56,0
71,0
kg
2,5
4,0
5,0
6,5
8,0
tiles
23 m/s
28,0
42,0
53,0
72,0
90,0
kg
3,5
5,0
6,0
8,0
10,0
tiles
24 m/s
36,0
51,0
67,0
91,0
111,0
kg
4,0
6,0
7,5
10,5
12,5
tiles
25 m/s
44,0
62,0
84,0
111,0
132,0
kg
5,0
7,0
9,5
12,5
15,0
tiles
26 m/s
52,0
79,0
103,0
131,0
154,0
kg
6,0
9,0
11,5
15,0
nb
tiles
Environmental factors
Position
Middle zone roof
Terrain category
III (villages, suburban terrain, permanent forest)
Roofing materials
Bitumen
Ballast
foundations
