
X= the required ballast is higher than will t 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)
Roong materials Bitumen
Ballast
foundations