Grid gutters Prefaest RI and HRI

The most sustainable solution for drainage projects.

Stradal's self-supporting RI and HRI grid channels are marketed in the Netherlands by DWTN. A self-supporting line drainage, fitted with a cast iron "Ondine", "Banana" or "Saone" profile grating class D, 400KN or F, 900KN.

Stradal RI and HRI linear drainage channels are the most sustainable solution for drainage projects. The patented production method, which makes use of a very high (self-compacting) concrete quality and in which the gutters are provided with a steel longitudinal and transverse reinforcement, to which the galvanized angle profiles and screw sleeves are also coupled, allow RI - HRI gutters without a supporting back to be used. can be placed. Even at traffic class F, 900KN. In accordance with NEN-EN 1433, drainage channels for traffic areas, the RI-HRI channels fall under the so-called I-type.

RI - HRI gutters are provided with pre-assembled, specially developed, nodular cast iron grids. The profile ensures an optimal and fast absorption of water. The RI -HRI gutters are also equipped with a funnel/nut end. In combination with the applied pin/hole connection, this ensures optimum support between the gutter elements. Thanks to the prepared sealant joint, it is possible to have a liquid-tight finish between the elements. Sand trap elements and end plates can be supplied with a PVC or HDPE connection.