5 Steps to a reliable ballasted PV rooftop system
Building Shape determines how the wind acts on the system. Recesses, chimneys and other obstacles have a direct effect on the local wind conditions.
- Roof edge (parapet)
- Increases turbulences
- Correct input of the parapet geometry is important
- Obstacles (structures, roof penetrations)
- In addition to shading, they cause turbulences.
- The effect of turbulences due to obstacles considered.
- Optimum positioning of the PV panels
- Positioning with regard to wind loads and solar irradiation.
- Consideration of apertures in the roof
Higher the friction between roof membrane and mounting system, the more difficult for the wind to displace the system.
We take the friction coefficient for the design into consideration, which is a decisive factor for the reliability of the installed mounting system.
- Inspection of the roof membrane regarding type, material and inclination. Input of the data into the calculation tool.
- Determination of the friction coefficient through measurement.
- Compression resistance of roof membrane and isolation, maximum point loads.
- Roof construction (maximum allowed roof load)