Underground Horizontal Applications:
Material:
In constructions of underground buildings such as parking garages, DELTA®-MS 20 is installed horizontally between the foundation slab and the concrete floor to drain off water influx caused by an elevated groundwater level.
Its high drainage capacity enables DELTA®-MS 20 to meet all requirements for occurring water problems in constructions of underground buildings.
Application:
In constructions of underground buildings such as parking garages, DELTA®-MS 20 is installed horizontally between the foundation slab and the concrete floor to drain off water influx caused by an elevated groundwater level.
Underground Vertical Applications:
Material Properties:
DELTA®-MS 20 can be economically applied on vertical surfaces as a high capacity drainage layer between a shotcrete layer (diaphragm wall) and the structural concrete wall. The shotcrete of the diaphragm wall acts like a filter and keeps the seepage layer free from ground soil particles.
With its 20 mm studs and very high drainage capacity, DELTA®-MS 20 is ideally suited as a reliable high performance seepage and drainage layer in blind-side applications against shotcreted surfaces.
Application:
DELTA®-MS 20 can be used between shotcrete installations or diaphragm walls and cast-in-place concrete walls. The shotcrete or the diaphragm wall acts like a filter and keeps the seepage layer free from ground soil particles.
This procedure allows to:
Tunnel Ceiling & Wall Application:
Material Properties:
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.
Application:
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 |
| 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 |
| Flow rate / unit width @ Hydr. grad. 0.02; 100 kPa | 5.0 gal/min/ft (62.2 l/min/m) | ASTM D4716-08 |
| Air-gap volume between dimples | approx. 14 l/m² | |
| Water Penetration Resistance | > 120 psi (815 kPa) | AATCC 127-1995 |
| Watertight |
| 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' 7" (20 m) | |
| Roll width | 6' 6" (2 m) | |
| Service life expectancy | > 25 years (at pH between 4 and 9, and temperature below 25°C). Do not expose to UV light for longer than 30 days. | |
