Double wall slotted (drainage purposes) or perforated (infiltration use) corrugated high density polyethylene pipe. It is flexible and able to contour corners and other obstacles.

Corrugated pipe Norm Unit Value
Inner diameter UNE EN 61386-2-4 mm 93
Outer diameter UNE EN 61386-1 mm 110
Inner diameter UNE EN 61386-2-4 mm 140
Outer diameter UNE EN 61386-1 mm 160
Ring stiffness UNE EN ISO 9969 kN/m2 4 / 8
Perforation type / slotted/ perforated Ø15 º 360
Slits surface pipe Ø 110 cm2/m ≥44 (∼50)
Slits surface pipe Ø 160 cm2/m ≥75 (∼85)
UNE 53994: 2011 Plastics. Thermoplastics pipes and fittings with metallic reinforce for building and civil engineering sub-soil drainage.

EPS geosintetic particles with a particular design to achieve high water flow and void space. High content of post industrial recycled material from strictly sorted sources. Carefully tested. Narrow molecular weight distribution despite recycling. Cell size structure suitable for high compressive strength. It is not brittle at subzero temperatures. Works as gravel replacement.

Chemical Resistance: It is a large molecular weight compound with a non reactive structure. It is resistant to diluted basic and acidic media. It is not attacked or degraded by long exposures to either bleach, soap solutions, or common household products that are poured down the drain.

Geosynthetic Particles
Norm Unit Value
Bulk specific weight UNE 92120-2:1998 kg/m3 10
Specific weight UNE 83134 kg/m3 20
Void Space % 50
Specific Surface m2/m3 ~230
Particle Number units/m3 ~115.000
Water absorption 7 days UNE EN 12087:1997 % 2,0
Water absorption 21 days UNE EN 12087:1997 % 2,2
Particle size distribution UNE EN 933-1 % pass <8 mm: 0

< 20 mm: 73

<  25 mm: 100

Working temperature ºC -50 to +55
Color Silver grey

Geotextile needle punched filter. Does not need to support heavy load puncture compared with traditional gravel drainage. It is printed longitudinally with a line displaying the words ” This side up”. Segments must be installed positioning this line upwards. In between the netting and aggregate there is a geotextile filter covering 3/4 of the bundle perimeter. The uncovered part (1/4) must be placed facing the bottom of the trench. The fabric is used to prevent the soil intrusion.

Geotextile Filter
Norm Unit Value
Polymer Polypropylene
Bonding technique Needle punched
Mass per unit area UNE EN ISO 9864 g/m2 100
Thickness 2 kPa UNE EN ISO 9863-1 0,7
Tensile strength MD/CMD UNE EN ISO 10319 8,0/8,0
Elongation at max. load MD/CMD UNE EN ISO 10319 90/80
Static puncture resistance (CBR) UNE EN ISO 12236 1300
Cone drop test UNE EN ISO 13433 28
Water permeability UNE EN ISO 11058 0,120
In plane capacity @ 20 kPa UNE EN ISO 12958 1×10-6
Opening size O90 UNE EN ISO 12956 80
UV protection Yes

The wrapping net is necessary to hold the pipe, particles and geotextil filter in place. It is UV protected and elastic.

Wrapping Net
Unit Value
Polymer Polyethylene
Weight per unit (DR300) g/m 67
Weight per unit (DR370) g/m 76
Semiperimeter (DR300) cm 51
Semiperimeter (DR370) cm 63
Net type Oriented tubular

drenotube® bundles are 3 or 6 meter long. Every segment includes a fast click-connector to easily join the modules. The product is available in two diameters.

drenotube® Unit Value
Length m 3 or 6
Weight (DR300) g/m 1300
Weight (DR370) g/m 2150
Bundle diameter (DR300) cm 300
Bundle diameter (DR370) cm 370

1-NOTE:  EPS aggregate particles are lighter than water, therefore, it would  be expected that natural buoyancy forces would tend to make drenotube® float out of ground when ponding occurs. Field experience has shown, however, that this is not a problem when it has a minimum of 200 mm soil cover.

2- NOTE: Despite the geotextile filter is UV protected, due to its fine fiber structure it is better to backfill the trench as soon as possible after installation to avoid exposure to sunlight.

3 – NOTE: drenotube® is packed with a polythylene UV protective bag. Do not remove until the planned installation day.