AV 620 Drainage System

Similar to the AV 600 Drainage System but with an additional pressure-dividing slip film glued to the back of the dimpled sheet that acts as the first smooth, non-sticky surface of the slip layer and as an 900 kPa additional protection layer of the waterproofing membrane. Application The AV 620 Drainage System is a component of the Nophadrain Parking Deck System – cars that acts as a filter, drainage and protection layer. Properties • Material dimpled sheet: recycled high impact polystyrene (HIPS) • Material woven geotextile filter: polypropylene (PP) • Material pressure-dividing slip film: polypropylene (PP) – ND 620 only • Construction height: approx. 12.5 mm • Compressive strength: approx. 900 kPa • Weight: approx. 1,238 g/m² (AV 620) • Drainage capacity at i = 1 at 20 kPa: approx. 5.27 l/(s.m) • Drainage capacity at 2 % fall at 20 kPa: approx. 0.72 l/(s.m) • Test: performance test at the Technical University Munich (D) - assessment of the performance and behaviour of a pavement structure under simulated traffic conditions.