High Quality Dimpled Sheets made by INTERPLAST.

ISO-DRAIN 20

The Heavy-Duty Tunnel Drainage Bed

Dimpled Sheet ISO-DRAIN 20
ISO-DRAIN 20 dimpled sheet from INTERPLAST provides reliable full-surface drainage in tunnels and other underground structures exposed to heavy groundwater flow. Used as a separating layer, it offers design engineers numerous advantages.
ISO-DRAIN 20
Benefits:
  • Outstanding drainage capacity
  • Controlled redirection of water influx to collection system
  • Extremely rugged and durable
  • Suitable for use as permanent shuttering
ISO-DRAIN 20
Technical Data:
 Material: HDPE
 Colour: black
 Thickness: apprx. 1.0 mm
 Available sheet widths: 2.0 and 2.5 m
 Area weight: apprx. 1,000 g/m²
 Dimple height: 20 mm
 Dimple spacing: apprx. 400 per m²
 Air-gap (between dimples): apprx. 14 l/m²
 Drainage capacity: apprx. 10 l/s/m
apprx. 600 l/min/m
apprx. 36,000 l/h/m
 Compressive strength: apprx. 150 kN/m² (15 t/m²)
 Service temperature range: -40 °C to +80 °C
 Physiological properties: non-polluting for drinking water
INTERPLAST dimpled sheet products are resistant to a wide range of chemicals, impervious to root penetration, rot-proof and unaffected by soil bacteria and fungi. INTERPLAST premium-quality dimpled sheet products conform to applicable EN and national standards. Installation should be done using only original accessories.

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