
Ballast foundations
Windmap Sweden
Required ballast | Sweden
Building height 0 - 5
meter
5 - 7
meter
7 - 9
meter
9 - 12
meter
12 - 15
meter
Wind area G1 G2 G1 G2 G1 G2 G1 G2 G1 G2
22 m/s 36 29 36 37 36 44 36 51 36 57 kg
4 3,5 4 4,5 4 5 4 6 4 6,5 tiles
23 m/s 36 34 36 43 36 49 36 58 36 64 kg
4 4 4 5 4 5,5 4 6,5 4 7,5 tiles
24 m/s 36 39 36 48 36 56 36 64 36 72 kg
4 4,5 4 5,5 4 6,5 4 7,5 4 8 tiles
25 m/s 36 44 36 54 36 62 36 72 36 79 kg
4546474849tiles
26 m/s 36 49 36 60 36 69 36 79 36 87 kg
4 5,5 4 7 4 8 4 9 4 10 tiles
Building height 0 - 5
meter
5 - 7
meter
7 - 9
meter
9 - 12
meter
12 - 15
meter
Wind area G1 G2 G1 G2 G1 G2 G1 G2 G1 G2
22 m/s 36 40 36 50 36 58 36 68 36 75 kg
4 4,5 4 6 4 6,5 4 8 4 8,5 tiles
23 m/s 36 46 36 57 36 66 36 76 36 84 kg
4 5,5 4 6,5 4 7,5 4 8,5 4 9,5 tiles
24 m/s 36 52 36 64 36 73 36 85 36 94 kg
4 6 4 7,5 4 8,5 4 9,5 4 10,5 tiles
25 m/s 36 58 36 71 36 81 36 94 36 103 kg
4 6,5 4 8 4 9 4 10,5 4 11,5 tiles
26 m/s 36 65 36 79 36 90 36 103 X X kg
4 7,5 4 9 4 10 4 11,5 X X tiles
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.
Environmental factors
Roof zone Middle zone
Terrain category III (villages, suburban terrain, permanent forest)
Roong materials Bitumen, EPDM or concrete
Panel: maximum dimensions 1800x1150 mm Panel: maximum dimensions 2280x1150 mm
General
The ValkBox3 mounting system must be ballasted by means of tiles, which must be placed on the
indicated ballast foundations. In three steps you can easily determine the required ballast;
• Find the correct wind area for your location on the wind map
• Use the wind area in combination with the building height for the ballast table
• Select the required ballast for G1 and G2 in kg and/or number of tiles
Note 1: Min. extra ballast in G1 & G2 has to be 2 x 1 tile (2 x 9 kg).
Note 2: The ballast in G1 & G2 must be equally divided over the rubber ballast carriers.
Note 3: At maximum 17 tiles (30x30x4.5 cm) can be placed on the tile carriers. 4 tiles in G1 and 13 (2x6.5)
tiles in G2. This represents a ballast weight of 153 kg).