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Application

The Radmat range of SWB Blue Roof Geocells provides attenuation as part of a Blue Roof system that is designed to manage and control incident rainfall at a rate in line with the SuDS strategy or the attenuation requirements for a development.

Description

Manufactured from polypropylene SWB Blue Roof Geocells are load bearing modular units that are clipped together to form a single- or double-layer attenuation cell that is wrapped in Radmat G12 Geotextile Filter Fleece.


Features and benefits:

  • Used in conjunction with rainwater outlet restrictors to control discharge, the Blue Roof is designed to be half empty within 24 hours.
  • SWB Blue Roof Geocells can be finished with a green roof, paving or rounded ballast as stated below. Where a support system is being used to support roof mounted plant or equipment each foot of the support system must be placed on a 1 x 1 metre spreader plate so as to ensure load distribution.
  • Green roofs can be installed over Radmat MedO D25, D40 or D80 reservoir/ drainage boards can be installed directly onto the Radmat G12 geotextile.
  • Rounded ballast should be installed over Radmat DM12 drainage board to prevent the rounded ballast penetrating the Radmat G12 geotextile when trafficked.
  • Bedded paving should be installed over Radmat DM12 drainage board to prevent damage to the Radmat G12 geotextile when installing.
  • Paving on supports should be installed on paving supports with a minimum 200 mm diameter base.

General information

Color

Black

Finish

Paving.

-

Material

Polypropylene

Shape

Square

Length

600 mm

Width

600 mm

Height

50 mm

65 mm

80 mm

100 mm

150 mm

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Uniclass

Pr_70_55_76_34 Geocellular modular plastics storage unitsPrimary

CAWS

Q37/350 Drainage layer

R17/315 Modular plastics soakaway units

Specification data - Geocellular modular plastics storage units

Material

Geocellular modular plastics storage units.

Unit size

600 x 600 x 50 mm.

Length x width x depth.

Capacity

0.018/0.0171 m³.

Structure volume/ storage volume.

Integral accessories

Radmat G12 Geotextile Filter Fleece.

For use as geotextile lining, geotextile top layer and surround.

Finishes

Manufacturer's standard.

  • Green roofs can be installed over Radmat MedO D25, D40 or D80 reservoir/drainage boards can be installed directly onto the Radmat G12 geotextile.
  • Rounded ballast should be installed over Radmat DM12 drainage board to prevent the rounded ballast penetrating the Radmat G12 geotextile when trafficked.
  • Bedded paving should be installed over Radmat DM12 drainage board to prevent damage to the Radmat G12 geotextile when installing.
  • Paving on supports should be installed on paving supports with a minimum 200 mm diameter base.

Weight

1 kg.

Compressive strength - Temporary

Short term compressive strength Vertical/ Lateral = kN/m²

>750/200.

Compressive strength - Permanent

Long term compressive strength Vertical* = kN/m²

*Based on a 2.75 Material Safety Factor in accordance with CIRIA c630 guidance.

>273.

Volume void

Volume Void Ratio

95%.

EffectiveArea

(Average effective perforated surface)

60%.

Ancillaries

Cross connector, twin connector and control end plate.

Installation

Manufacturer's standard.

  1. Install Radmat G12 Geotextile Filter Fleece over the roof surface and up all upstands, ensuring enough length is left around the installation for the G12 to wrap up the sides of the SWB Geocells, and enough to overlap a minimum 150 mm onto the top of the SWB Geocells.
  2.  Lay SWB Blue Roof Geocells, clipping adjacent panels to each other using the SW Cross Connectors ensuring each SWB Blue Roof Geocell is correctly oriented for the clips to meet. (This is also the jointing method for a 2nd layer of SWB, SWG are connected with a shear connector.)
  3. Cover with Radmat G12 Geotextile Filter Fleece ensuring minimum 150 mm overlaps.
  4. Immediately cover with the specified roof finish (green roof/paviors/ballast).


This information given in good faith and is based on the latest knowledge available to Radmat Building products Ltd. Whilst every effort has been made to ensure that the contents of the publication are current while going to press, customers are advised that products, techniques and codes of practice are under constant review and liable to change without notice. Please consult with manufacturer for further information on Radmat products and services.

Literature

SWB Geocell PDS

SWB Geocell PDS

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