Nidacell EP Rainwater Attenuation and Infiltration System

Undergound Stormwater Management System
The Nidacell EP is a lightweight rainwater storage system designed and manufactured by Nidaplast. Nidacell EP can be used for underground stormwater retention, attenuation and infiltration projects to meet the SuDS requirements of the site.



Stormwater Retention, Attenuation, and Infiltration System
The Nidacell EP system helps meet some of the key principles governing the design of Sustainable Urban Drainage Systems (SuDS) which include storing rainwater runoff and releasing it slowly, referred to as attenuation, and allowing rainwater to soak into the ground, referred to as infiltration. This prevents large volumes of stormwater from rapidly entering the local drainage system and overwhelming it which can lead to flooding and pollution.

Nidacell EP is designed for the creation of underground geocellular attenuation and infiltration tanks. The modules or blocks are manufactured from polypropylene and supplied to the work site 'ready to install' with no assembly required. Nidacell EP offers flexible configurations and tanks can easily be constructed to meet the space available on site. This makes installation very quick, saving time on-site and reducing installation costs. Nidacell EP modules can be used to create both underground stormwater attenuation tanks and infiltration soakaways subject to their design. Nidacell EP is also available in a range of different compressive strengths allowing for different depths of backfill on top of the tank and for various surface finishes including roads, car parking, hard and soft landscaped finishes.

There are many benefits to using Nidacell EP for your underground rainwater tank. The speed of installation is one important benefit and this can result in time and cost savings on-site. The blocks do not need connecting, offsetting the blocks when laying ensures structural stability. The Nidacell EP system also requires minimal maintenance as the geotextile fabric welded to the top and bottom of each block prevents the ingress of fine particles into the storage modules.

  • Underground stormwater attenuation and infiltration system
  • Available in a range of compressive strengths
  • Lightweight large blocks enable rapid tank construction
  • High void space of approx 95%
  • Simple and effective stormwater management system
  • Easily incorporates with sustainable drainage site plans
  • Self-contained storage modules
  • Requires minimal maintenance and inspection
  • Cost-effective stormwater SuDS solution
  • Product ID: Nidacell EP
  • Block dimensions: 2.4m x 1.2m
  • Block coverage: 2.88 sqm per sheet
  • Block thicknesses: 120/520mm
  • Block colour: Black
  • Void rate: 95%
  • Diameter of honeycombs: approx 50mm
  • Choice of compression strengths:
  • Nidacell EP 400 - Short term 300 kPa / Long term 45 kPa
  • Nidacell EP 500 - Short term 400 kPa / Long term 65 kPa
  • Nidacell EP 600 - Short term 500 kPa / Long term 85 kPa
  • Manufacturer Nidaplast
    Product ID Nidacell EP
    Function Underground stormwater attenuation and infiltration
    Material Extruded polypropylene (PP) honeycomb
    Recyclable Yes, 100% fully recyclable
    Vertical Compressive Strength
    Nidacell EP 400 - short-term vertical compression 300 kPa
    Nidacell EP 400 - long term vertical compression 45 kPa*
    Nidacell EP 500 - short-term vertical compression 400 kPa
    Nidacell EP 500 - long-term vertical compression 65 kPa*
    Nidacell EP 600 - short-term vertical compression 500 kPa
    Nidacell EP 600 - long-term vertical compression 85 kPa*
    *extrapolated to 50 years
    Durability High resistance to water, most acids, bases and salt solutions
    High resistance to UV

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