DELTA® protects property.
Saves energy.
Creates comfort.
Cosella-Dörken Products, Inc.
4655 Delta Way
Beamsville, ON L0R 1B4
Canada
Phone: 1-905-563-3255
Toll Free: 1-888-4DELTA4
Fax: 1-905-563-5582
Email: info@cosella-dorken.com
© Cosella-Dörken Products
A company of the Dörken Group
DELTA®-MS 20 - Tunnel Ceiling & Wall Application
Its high drainage capacity enables DELTA®-MS 20 to meet all requirements for occurring water problems on tunnel construction projects.
With its 20 mm dimples and very high drainage capacity, DELTA®-MS 20 is especially reliable for high performance seepage and drainage layers in tunneling and other double shell horizontal or vertical constructions.
Dimpled membrane made of special, high-density polyethylene.
When laid vertically, the water emerging from the rocky substratum is drained away through a DELTA®-MS 20 seepage layer. Build-up of hydrostatic pressure is prevented.
| Product name |
DELTA®-MS 20 | |
|---|---|---|
| Color | chocolate brown | |
| Material | Recycled high-density polyethylene, encapsulated between two layers of special virgin HDPE | |
| Dimple height | approx. 3/4" (20 mm) | ASTM D6364-06 |
| Compressive strength |
apprx. 4,270 psf (200 kN/m²) |
ASTM D6364-06 |
| Fire resistance |
B2 B1 available upon request |
DIN 4102 |
| Flow rate / unit width @ Hydr. grad. 1.0; 100 kPa | 41.8 gal/min/ft (528 l/min/m) | ASTM D4716-08 |
| Flow rate / unit width @ Hydr. grad. 0.1; 100 kPa | 11.2 gal/min/ft (139 l/min/m) | ASTM D4716-08 |
| Air-gap volume between dimples | approx. 14 l/m² | |
| Water Penetration Resistance | > 120 psi (815 kPa) Watertight |
AATCC 127-1995 |
| Water Vapor Transmission | < 22 ng/(Pa s m²) |
ASTM E96, Meth. A |
| Vapor permeance | < 0.3 perms [grains/h/ft²/in Hg] |
ASTM E96, Meth. A |
| Temperature range | -22°F to +176°F (-30°C to +80°C) |
|
| Chemical properties | Excellent chemical resistance, resistant to root-penetration, rot-proof |
|
| Toxicity | non-toxic, non-polluting |
|
| Roll length |
65.6' (20 m) |
|
| Roll width |
6'6" (2 m) |
|
| Service life expectancy |
> 25 years (at pH between 4 and 9, and temperature below 25°C). The membrane should not be exposed to UV light for more than 30 days. |
|
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