Wopereis supplied four concrete silos to the Weert water treatment plant (RWZI), one of which was covered with a tensile structure. The largest concrete silos are 7 metres high and have a diameter of 36 metres. For this client, too, customisation is a matter of course. For example, the concrete silos have been provided with penetrations, which meant that the guying had to be calculated especially for this version. The four concrete silos are now in use.