PM STANDARD GS
Dimpled sheet
PM STANDARD GS dimpled sheet with 8 mm high dimples is the high-quality problem solution for tunnel constructions with low water accumulation. These PMI dimpled membranes are manufactured from high-quality high-density polyethylene (HDPE).
HDPE is neutral to groundwater, pollutant-free for disposal and recyclable. In tunnelling, the dimpled sheets form a narrow channel system for the reliable drainage of the surface water.
The dimples face the tunnel lining, i.e. rock or shotcrete. The waterproofing membrane can then be installed.
Material | HDPE |
Colour | black or brown |
Number of dimples | 1.710 dimples/m² |
Dimple height | 8 mm |
Compressive strength | 250 kN/m² |
Temperature resistance | –30 °C to +80 °C |
Fire behaviour | class E |
Roll length | 20 m |
Roll width | 0,5 m / 1,0 m / 1,5 m / 2,0 m / 2,4 m / 2,5 m / 3,0 m |
Chemical properties | chemical-resistant, rot-proof |
Biological properties | resistant to bacteria and fungi |
Physiological properties | safe for drinking water |