Grid channel Prefaest HRI, self-supporting type I.

HRI® linear drainage channels have been the most sustainable solution for drainage projects for years.

Stradal's self-supporting HRI grid channels are marketed in the Netherlands by Diederen Afwateringstechniek. A self-supporting linear drainage, fitted with a cast iron "Bananen" or "Saone" profile grate class D, 400KN or F, 900KN.

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

HRI® gutters are equipped with pre-assembled, specially developed, nodular cast iron grids. The profile ensures optimal and fast water absorption. The HRI® gutters are also equipped with a sailing / nut end. In combination with the fitted pin / hole connection, this ensures optimal support between the channel elements. Thanks to the prepared sealant, it is possible to finish the elements liquid-tight. Sand collectors and end plates can be supplied with a PVC or HDPE connection.

Advantages HRI® line drainage:

• patented production technology
• high concrete strength
• steel longitudinal and transverse reinforcement
• no support back required
• sealant room for liquid-tight sealing
• great diversity in dimensions
• high inflow and discharge capacity
• manning trickler 95

Application areas:

• platforms and aircraft stands
• port areas
• industry
• environmental stations
• fire stations
• visibly remove HWA
• bus stations
• center renewal
• wadi piercing and bottom passages
• fauna solutions