D-Raintank^®

D-Raintank® manages two important tasks; retention of water below the ground and soaking it away. D-Raintank® combines an extremely high storage capacity with incredible strength for underground use. Modules are put together from statically calculated grid plates, laid out in the specified design configuration, then completely wrapped in geo-textile. D-Raintank® is setting industry standards by providing a highly efficient manner of subsurface drainage technology designed to ensure the preservation of greenspace, more efficient land development and the replenishing of ground water "at source", key elements in long term environmental sustainablility.

D-Raintank® advantages at a glance:

• Outstanding storage capacity (95% void).
• Soakaway or Attenuation.
• Arrives to site fully assembled ready for installation
• Free movement of water.
• Simple and quick installation reduces construction cost.
• Manufactured from high quality polypropylene (PP).
• Environmentally friendly, recyclable.
• Flexibility of installation ensures efficient use of space.
• Low maintainance cost.
• Flushable.

• D-Raintank® Soakaway - Imperial
• D-Raintank® Soakaway - Metric
• D-Raintank® Attenuation - Imperial
• D-Raintank® Attenuation - Metric
• D-Raintank® Freeway - Imperial
• D-Raintank® Freeway - Metric

• Further information
• Installation instruction for small applications
• Installation instruction for large applications

D-Raintank® vs. Granular Fill:

Head plates are designed to support HS 20 - 44 loading and allow for a cover height of up to 2.0 metres.

Technical data:

Dimensions:  810 x 840 x 400mm

Volume: 0.272 m³

3.67 modules = 1.0 m³

Storage Coefficient: 95%

Weight: Approx. 15 kg

Material: Polypropylene
Colour:   Black

D-Raintank® Freeway is a lateral 250mm diameter pipe pre-installed into D-Raintank®

• Freeway is jointed at each D-Raintank® module abutment to provide a continuous conduit right through the stormwater storage installation.
• Impervious invert allows sub-storm rainfall, summer trickle and attendant silts to pass directly through the storage facility.
• Perforated soffit releases stormwater into D-Raintank®
• Manufactured from compact UPVC with a wall thickness of 8.2mm, Freeway can be jetted.
• Enables the whole installation to be flushed out both for routine maintenance and in the event of upstream silt traps overflowing.

This has been fully tested and complies with standard
D-Raintank® loadings.

*NB An additional outlet pipe will be required at D-Raintank® installation invert level to evacuate the bottom 200mm of the installation including the flush.

Module dimensions: 810 x 840 x 400 mm

Module volume: 0.272 m3

3.67 modules = 1.0 m³ gross volume

Mechanically strengthened PP fibres, UV stabilised, with CE symbol. 20 m roll: suitable for 22 D Raintanks laid horizontally in a run, approximately 9.7 m2 of fleece filter material per m3 of D Raintank

Roll dimensions:
100 m x 5.9 m = 590 m2    60m3
100 m x 2.95 m = 295 m2    30m3
20 m x 2.95 m = 59 m2      6m3
Only supplied in complete rolls!

For the ìsmall applicationî. Ready pre-assembled: only needs connecting

Material: Polypropylene
Colour: Black
Dimensions: Type II 810 x 1700 x 400 mm, volume 0.551 m3
Type III 810 x 2540 x 400 mm, volume 0.823 m3

For retrofitting into the down pipe.
Colour: zinc grey and copper brown
Includes adapter to DN 80

in cast iron, inc. child security device, Class B 12.5 t