Rainwater harvesting system with three 40.000-litre RoDrive underground tanks supplied to Porsche Centro Porto, for a total capacity of 120.000 litres. Each high-strength HDPE tank is around 8,5 metres long and has two self-levelling telescopic DN600 access shafts. Designed to be buried under traffic areas, they withstand truck traffic of up to 40 tonnes without a concrete cover slab — a light, quick-to-install solution for an urban site with limited space.