In the course of implementing the new Flat roof III mounting variant for clamping on the long side of the frame, we were able to optimise our calculation model for determining the ballast through extensive tests and further evaluations of the wind tunnel tests.
Thanks to the new calculation method, which allows the Solar-Planit to recognise modules in relation to the real module field, the cpe values of the further wind tunnel analysis can be applied individually to the modules. The findings of the large field tests carried out on load redistribution in combination with module recognition lead to an optimised ballast calculation for lift-off verification.
In the course of these investigations, we also dealt intensively with the ballast calculation for the verification of the sliding safety of the system due to horizontal wind forces - here, too, we were able to significantly optimise the ballast calculation once again.
Ballast optimisation through module detection can now be planned for all systems of our flat roof generation III in Solar-Planit - regardless of whether clamping is on the short or long side of the frame.
Optimise your current projects - it's worth recalculating!
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Update from 31 October 2024:
After we already announced in the past few weeks that the ballast for our Flat roof III system has been reduced, we can now also announce this change for the Flat roof II system.
The optimisation of the ballast has an effect depending on the module field size and thus depending on the system size, whereby smaller system fields tend to now require significantly less sliding ballast than before. When the system is calculated in Solar-Planit, the optimised ballast calculation for the slip resistance test is carried out automatically. The optimisation has no influence on PV systems that are designed with position locking, since no sliding ballast is required here.