See in this video how much it rains in the world. This movie proofs the enourmous hydraulic performance of HAURATON Gratings in relation to different rain events in the world. See the greatest rain events in the world and how the HAURATON gratings are tested. Discover the rainfall records worldwide and the rain amounts which are used for haydraulic calculations. The test result: HAURATON tested the performance of the gratings in a test centre. Water flows over the outer edge of the grating into the channel. That's why the width of the grating only has a minor influence on the hydraulic performance. See for example the RECYFIX HICAP - HAURATON's high capacity drainage channel for the highest load category. HAURATON gratings easily handle all previously seen rain amounts.