Terradrain D6MM
Terradrain D6MM is a geocomposite drainage and water attenuation layer comprising a perforated cuspated HDPE (High Density Polyethylene) core with a UV-stabilised geotextile filter thermally bonded on the upper, flat side.
The textile filter has a flap that extends beyond the core on one edge. It is used as an engineered drainage layer in structural applications, its major areas of use being behind retaining structures, on roof decks and in subsurface works.
Usage
- Hard landscaping
- Structural applications
- Behind retaining structures
- Roof decks
- Subsurface works
Product Details Back to top
Technical Data
| GEOTEXTILE PROPERTIES | |
|---|---|
| Type | Non-woven needle-punched and heat-treated long staple fibre polypropylene |
| Thickness at 2kPa | (mm) | 1.2 | ±20% | EN ISO 9863-1 |
| Tensile strength MD/CMD | (kN/m) | 9.5 / 9.5 | -13% | EN ISO 10319 |
| Pore size 090 | (μm) | 120 | ±30% | EN ISO 12956 |
| CBR puncture resistance | (N) | 1 600 | -20% | EN ISO 12236 |
| Dynamic perforation cone drop | (mm) | 32 | +20% | EN ISO 13433 |
| PRODUCT DIMENSIONS | |
|---|---|
| Standard roll dimensions | 1.1 m x 50 m or 2.2 m x 25 m |
| GEOCOMPOSITE PROPERTIES | ||||
|---|---|---|---|---|
| Thickness at 2kPa | (mm) | 6.1 | ±10% | EN ISO 9863-1 |
| Mass per unit area | (g/m²) | 670 | approx | EN ISO 9864 |
| Tensile strength MD / CMD | (kN/m) | 9.5 / 9.5 | -13% | EN ISO 10319 |
| Elongation at peak MD / CMD | (%) | 40 / 50 | nominal | EN ISO 10319 |
| CBR puncture resistance | (N) | 2 250 | -20% | EN ISO 12236 |
| Perpendicular Water Inflow | (dimple side only) | |||
| Water flow at 50mm head | (l/m²·s) | 103 | ±30% | EN ISO 11058 |
| At 2kPa permeability (coefficient) | (m/s) | 2.6 x 10-3 | ±30% | EN ISO 11058 |
| Breakthrough head | (mm) | 0 | nominal |
| Resistance to weathering | To be covered in 28 days | EN 12224 |
| Resistance to chemicals | Excellent | EN 14030 |
| Design life | 120 years (manufacturer’s declaration) |
| IN-PLANE WATER FLOW MD3 | HG = 1.0 | HG = 0.1 | Hydraulic gradient |
|---|
| at 20kPa confining pressure | (l/m·s) | 1.45 | ±0.25 | 0.45 | ±0.09 | EN ISO 12958 |
| at 100kPa confining pressure | (l/m·s) | 1.25 | ±0.23 | 0.38 | ±0.10 | EN ISO 12958 |
| at 200kPa confining pressure | (l/m·s) | 1.05 | ±0.21 | 0.29 | ±0.07 | EN ISO 12958 |
