Modular Geo-VoidSystemsTotal Water Management

Reduces Urban

flooding

and water

contamination

Modular design

provides

easy installation

Civil and

Environmental

Engineering

Applications

A Precipitation Collection Systemand Versatile Void Former

ENVIRONMENTAL SUSTAINABLE SOLUTIONS LTD

Modular Geo VoidSystem

Cost Effective

Geo Void is a cost-effective alternativeto gravel and pipe based systems.When infiltration control methods areused as the first choice for surfacewater drainage their total capital costcan be up to 5 times cheaper thanconventional pipe systems as statedin CIRIA Report 156 ʻInfiltrationDrainage; Good Practice Manual.

Flexibility of Application

The drainage module is suitable forboth vertical and horizontalapplications. It can be supplied in pre-assembled sheet format in lieu ofslotted/perforated drains, in looseform for horizontal applications (e.g.infiltration blankets/green roofs), andin a box construction for infiltration orattenuation tanks.

Flexibility in the adjustment of tankheights, widths and depths allowsVersaVoid to be used in greatervariety of site conditions thancompeting systems, including higherwater table levels from 300mm to3050mm+.

Exceptionally High Void Area

A 99% sectional void area ensuresthat the rate of absorption of waterinto VersaVoid will always be higherthan the rate of percolation of waterthrough the soil, maintaining acontinuous discharge.

Environmentally Friendly

The high void to surface area ratio ofVersaVoid means that less aggregateis required to achieve the sameinfiltration rate as full gravelconstruction. This reduces the impactof aggregate extraction on theenvironment.

General InformationBenefits

QuickReduce site access delays

LightweightNo cranes required

StrongDesigned for maximum anticipated loads

Maintenance Free Tank All debris and sediment is pre-filtered

Determinate Volume One cubic metre of Tank modules

contain 950 litres of water

Cost Effective Reduces excavation and disposal by up to5 x compared with conventional soak wells

High Infiltration98% void surface area

Totally ModularFor greatest flexibility designed to cope.

Units start at 300mm deep for shallowinverts to 3050mm+ deep in 250mm

increments.

Designed by Engineers for Engineers– to specify with confidence.

Designing out Problemswith such systems (access, maintenance,

loading etc.)Designing in Answers

to design requirements.

Total 3D AccessFor total maintenance with total confidence.

Structurally Designed with built in safety factor to carry all loads

with complete confidence.

16 clear vertical access chambers per m2.

Total Void CreationWith the greatest strength from any

modular systems.

System Components

VersaVoid Tank Modules

See separate data for:

VersaVoid Filtration Units

Geotex Filtration Fabric

Tuflex Waterproofing Membrane

Geotex Protection Fleece

Ventilation Units

Preformed Pipe Connection Covers

Re-cycling Systems

Run-off Filtration Media - Ecosand

Infiltration, Detentionand Re-use made easy...

Inner Supports -

Outer Plates -

Installed Modules -

500 x 500 x 250 mm500 x 500 x 25 mm500 x 500 x 300 mm500 x 500 x 550 mm500 x 500 x 800 mm500 x 500 x 1050 mm500 x 500 x 1300 mm500 x 500 x 1550 mm500 x 500 x 1800 mm500 x 500 x 2050 mm500 x 500 x 2300 mm500 x 500 x 2550 mm500 x 500 x 2800 mm500 x 500 x 3050 mm+

Total Stormwater Management

ESS Geo-Void Modular Tank systems use surfaceand sub-surface infiltration techniques, resulting inclean water that can be re-used or allowed to re-enter the natural water system. Geo ModularSystems offer a highly efficient option forStormwater Management in any kind of soils.

Water Quality

ESS Geo-Void Modular Tank Systems excel whenthere is a requirement to achieve a high waterquality, particularly in the effective removal ofnutrients and gross pollutants. In addition to theobvious environmental benefits, the sub-surfacelocation of the tank system provides more usablespace and an enhanced aesthetic settingcompared to above ground concrete or plastictanks.

The Modular Advantage

ESS Geo-Void Modular Tank System performancesupersedes outdated aggregate trenches. TheESS System provides a void space of over 90%compared to less than 20% in typical aggregatetrenches. Consequently, the ESS System offers asmaller footprint to achieve the same storagecapacity as an aggregate trench. This saves timeand money in installation and civil works costs. Thelightweight design of ESS Modular Tank Modulesalso make installation quicker, safer and cheaper.No sediment build up occurs in the VersaVoidSystem, unlike the clogging that is characteristic ofaggregate based approaches.

Maintenance

ESS Geo-Void Modular Tanks System provide totalall round access with clear access points andchannels in all directions.

Infiltration is the recommended method of

water management whenever:

- Site water quality is of paramount importance.

- Control of nutrients and gross pollutants is required.

- No formalised drainage is available.

- Construction levels are below the level of street stormwater mains.

- The tank is part of a landscape component of the water reticulation system.

Significant benefits are available when you use the superior holding capacityand surface area of an ESS Infiltration System. Please contact our office for further details.

Load Bearing Capacity:

The unconfined load capacity of the VersaVoid Tank Modules when orientatedin the width, length and depth configurations are determined by the designeduse and ground conditions and the constant load factors achievable allows forany installations with built in safety factors. See technical data for certifiedloading characteristics.

Infiltration Tank

The infiltration tank system is the ideal way to manage Stormwater runoff inpermeable or semi-permeable soil conditions.

How it Works!

The system is designed to capture surface water through infiltration, andthen clean and filter the water before it is allowed to recharge the watertable providing moisture for surrounding vegetation. The VersaVoid

Filtration Unit captures and cleans roof water before entry intothe storage area (VersaVoid Tank Modules).

Applications: New developments requiring to meet watersensitive urban design standards.

How To Use

Packs away for easytransportation

2 part StructureFix together to createeasy access for effectiveMaintenance

Clip Together BlockConstructionIdentical parts fit togetherto create the requiredcapacity

Outer PanelsEasily clip on and off tofilter large objects fromthe storm water, but stillprovide easy access forMaintenance

1

2

3

4

VersaVoid Geo-Cell Tank Modules

MULTIPLE STACKS

CONNECTORS

Each part has a 15ºangle on top andbottom of connector.So itʼs possible toconnect the boxes inanyway you want it.

The angle is 5mm oneach side.

The rest of the surfaceis straight and directsthe parts together.

FEMALE CONNECTOR

MALE CONNECTOR Same as Female.

Complete Access

Optional vent bollard

Optional vent box/inspectionaccess at ground level

Slotted distribution/maintenance channel

Upstreammanhole/inspectionchamber

Ground Level

Geotex 300pp

Filter weir

Vent in duct

Direction of flow

Silt BasketFilter pit

Optional entry to manhole

Horizontal Access

Ver

tica

l Acc

ess

Downstreammanhole/

flow controlchamber

Preformedcollar

Tuflex membrane

Emergencydrain down

Vortex flowcontrol

Through system 4 channels per m2 in bothdirections

Infiltration Tanks

Installation Steps

1. Excavate the pipe trench and laythe inlet pipe to the required fall andinstall silt traps in appropriatelocations in the pipe run.

2. Excavate the hole or trench to therequired dimensions to modular units,and any external inspectionchamber(s) and / or silt trap(s).

3. Ensure that the base plandimensions of the hole allowssufficient working space for the siteoperatives to manoeuvre theVersaVoid units and geotextile intoposition.

4. Ensure that the base of theexcavation is smooth and level, batterback the sides of the excavation to asafe angle, and ensure that the safeaccess is provided for the siteoperatives.

5. Remove any soft spots from theexcavation and replace withcompacted granular material.

6. Lay 100mm coarse sand beddingto the base of the excavation andlevel.

7. Lay the geotextile, to thespecification, over the sand beddingand up the sides of the excavationwith minimum 200mm overlap jointsbetween strips.

8. Ensure there is a minimum 200mmover-run of geo-textile at the end ofeach VersaVoid modular unit.

9. Inspect geotextile for damage. Laybaseplate to configured design.

Installation Procedures

Positioning devices

TOP VIEW

10. Assemble the VersaVoid structuralpanels to form the required number of fullmodule tanks. Laying the outer panelsfirst, followed by the inner parts.

The illustrations show the correct relationships,orientation, and sequence of connection of each panelto form a basic full module tank (500 x 500 x depth).

11. Assemble the VersaVoid modularunits to the configuration required witheach full module tank being securedto another by the interlocking integraljointing clip, connect side panels andtop to finished module, and place onthe geotextile.

12. To receive the inlet pipe (andoutlet/ inspection pipe if required).Insert tank connector and, usinggeotextile, form a wrap around apronof the tank connector spigot andsecure using tape or jubilee clip.Ensure a minimum 50mm of spigotremains exposed.

13. Continue with the geotextileencapsulation of the VersaVoid tank.

14. Fold the corners of the geotextileover-run at each end of the infiltrationtank as shown.

15. Complete the encapsulation bywrapping the geotextile horizontallyaround the tank and tape intoposition.

16. Connect inlet / outlet / vent pipeand inspection chambers usingappropriate adaptors.

17. Backfill around excavation usingtype 1 or 2 sub base or selectedgranular material, and compact inlayers of not less than 150mm. Thefirst 500mm of any installation shouldbe compacted by hand,

18. Use a coarse sand protectionlayer over the top of the VersaVoidtanks and geotextile and the back fillto the required depth using Type 1 or2 sub base material. If the area is tobe trafficked, or where the area is tobe landscaped then as-dug materialmay be used provided sharp or largesolid matter is removed.

19. The area should then becompacted using suitable compactionequipment in accordance withspecification for highway Works.

Installation Procedures

Notconnected

1600m3 Soakaway 2 meters deep, 3 meters of cover

Attenuation Tanks

We strongly recommended, that the

VersaVoid attenuation system is

installed by a competent, qualified

geomembrane lining contractor.

Please consult ESS Ltd for further

advice.

Installation Steps

1. Follow steps 1-9 as for infiltrationbut use protection fleece as specified.Also dependant on ground conditions(e.g. higher water table) site concretelayer may be preferable to sand base.

2. Fabricate the geomembrane lineron site and ensure that all welds aretested. The geomembrane must beinstalled by an approved contractor.

3. Apply a second (inner) protectionfleece as steps 7-9 above and tospecification inside the geomembranetank liner (if required).

4. Form hole(s) in side or top ofVersaVoid unit using 150mm diameterhole to receive the inlet pipe (andoutlet/ inspection pipe if required).

5. Assemble the VersaVoid modularunits to the configuration required witheach tank being secured to anotherby interlocking, and place onprotection fleece.

6. Cut geo-textile around inlet/ outletpipes and insert tank connector,together with geomembrane top hat.

7. Carefully cut geomembrane aroundpipe protrusions and weld top hat tothe geomembrane tank liner. Thenweld geomembrane top hat to tankconnector. Test all joints for leaks.

8. Continue with the inner protectionencapsulation of the VersaVoid tank.

9. Place lid of geomembrane on tankand seal with weld. If protrusions existfor venting repeat step 7.

10. Check for leaks and test seals.

Installation Procedures

11. Continue with the outer protection encapsulation ofgeomembrane and VersaVoid tank. Fold the corners ofthe protection fleece over-run at each end of theattenuation tank as shown for infiltration tanks.

12. Complete the encapsulation by wrapping theprotection fleece horizontally around the tank and tapeinto position.

13. Connect inlet/ outlet/vent pipe and controlchambers using appropriate adaptors.

14. Backfill around excavation using type 1 or 2 subbase or selected granular material, and compact inlayers of not less than 150mm. The first 500mm of anyinstallation should be compacted by hand.

15. Use a coarse sand protection layer over the top ofthe VersaVoid tanks and geotextile and then back fill tothe required depth using Type 1 or 2 sub base materialif the area is to be trafficked. Where the area is to belandscaped then as-dug material maybe used providedsharp or large solid matter is removed.

16. The area should then be compacted using suitablecompaction equipment in accordance with specificationfor Highway Works.

VersaVoid

The most versatile voidformer on the market

Complete access for allservices - water, power,wiring, ventilation.

Raised FlooringMulti level void former

Roof/Podium decks - forcreating raised levels with noloading,

Complete access for servicesMulti-level versatility

Internal / Externalapplications

High Static loading - inexcess of 15 tonnes / m²

Quick and easy installation

Lightweight

Simple, easy clunk / clipassembly

Allows for completeversatility

350 mm central access channel withmultiple outlets

Horizontal access channel throughsystem

Other Uses

Top access showing 3-D access channelthrough system

B parts exposed to show service channels for cables and pipes

350 mm access channel through system

Installation demonstrating steppingability for multi-level finish if required

Sladen Mill, Halifax Road, Littleborough,Lancashire. OL15 0LB.

tel: 01706 374416, fax: 01706 376785

email: technical@y-ess.comhttp: www.y-ess.com

E&OE. Without Guarantee.

All products are manufactured to the

highest quality, being subject to rigid

quality control. However, the

company cannot control conditions

of application and use of its

products, thus any warranty, written

or implied, is given in good faith for

materials only. ESS Ltd will not

accept any responsibility for

damage or injury arising from

storage handling, misapplication or

misuse of its products. All

transactions are subject to our

standard condition of sale, copies of

which are available on request.

To find out more about these systems and products please contact us

Environmental Sustainable Solutions Ltd

ENVIRONMENTAL SUSTAINABLE SOLUTIONS LTD