Rain and Storm

Rain and Stormwe see water management differently

catch

convey

infiltrate

attenuate

clean

re-use

Wherever we live, water is on a journey.

Travelling around a cycle that is continuous

and, at times, challenging.

Water has both life-enhancing properties

and destructive potential. It can be too

scarce or, in some situations, too plentiful.

So, if we are to draw benefits from this

cycle, and avoid undesirable extremes,

water is a resource that needs to be

constantly managed.

firstcatchCapturing rain and surface water

thenconveyTransporting it

allow it toinfiltrateReleasing it into the groundwater

orattenuateStoring and controlling release

thencleanRemoving debris and pollutants

and aim tore-usePutting it to good use

Understanding the water cyclesWavin expertise and innovation

Water management is central to Wavin activities and

expertise. We see and understand its detailed needs,

simple or complex.

We are constantly seeking and finding new ways to

satisfy these needs. Solutions that are easier, more

practical, faster, more effective, higher performing and

that deliver improved value. In two words: even better.

To help define application needs, Wavin views the Water

Cycle in two important parts:

Rain and Storm – from rainfall onto roof and road,

through to river, lake and sea

Clean and Waste – from mains supply to

safe disposal and treatment

2

New solutions for water

management

Wavin is constantly augmenting and upgrading its

extensive portfolio of products and systems.

This brochure introduces some of the latest solutions

that have been designed to help better management

of Rain and Storm Water.

Some of these are already available, while others will

be introduced in the coming months.

For changing issues

and challenges

In each case, the new products and systems are

a tangible response to significant issues, trends

and challenges – both current and imminent.

These include:

z Increasing rainfall intensity

z Continuing climate change

z Changes to Building Regulations

z Increased population

z Increased land development

all pointing to the need for improved

z Sustainability

z Protection of water quality

Contents Page

StormLine 4

AquaGrid 5

RainChannel 6

Threshold Channel 7

Non-Entry Inspection Chamber 8

Tegra 600 9

AquaCell Systems for Infiltration 10

AquaCell and AquaCell Lite 11

AquaCell Systems for Attenuation 12

Garastor 13

Petrol Separators 14

Rainwater Re-use 15

For further information 16

The Rain and StormapplicationcycleRain and stormwater falling onto

buildings and developed land must

be properly managed because it is

denied natural drainage.

This water may pass through up

to six application areas before

restarting its journey via evaporation.

Delivering the difference

3

at Wavinwe see water management differently

High capacity classic ogee gutter profile,

incorporating a high front edge. Combining

attractive appearance with ability to handle

large volumes of water.

Applications

For roof areas up to 254m2 with one downpipe

(SquareLine). Particularly recommended for 3-storey

townhouses, apartment blocks, luxury detached houses

and conservatories.

z Fittings designed to assist faster and easier installation

z High front edge prevents over-shoot and conceals tile edges

z Internal rail for concealed hanging bracket

z Internal ribs to improve flow and reduce risk of blockage

z Outlets compatible with existingOSMA 61mm (SquareLine) and68mm (RoundLine) downpipe systems, without needing adaptors

A newcomer to the extensive OSMA Rainwater Systems range of gutter profiles, fittings, and downpipe systems.

Advantages include:StormLine NEW SOLUTION

Specific issues influencing design

The current trend to taller, more closely situated,

residential buildings; and increased frequency of

very heavy downpours.

4

catch

A clean catch is a winner

every time.

Whether it’s a drizzle or a deluge,

it’s vital to capture rainwater

wherever it falls, especially if

it has nowhere to drain away

naturally.

z Available in 50 & 75mm depths

z Lightweight, but strong andtrafficable

z Interlocking units to ensure fullsystem stability and integrity

z Assembled units allow lateraland vertical flow

z Tested for strength, loading and durability

z Up to 90% surface area available for water permeation

z Demarcation block to identifyparking spaces

z Quick and very easy to install

Augmenting the OSMA range of solutions for collection and removal of surface water – including gulleys and Channel Drainage Systems.


Increased frequency of heavy downpours –

and the need to help minimise standing surface water;

the need for sustainable drainage (SUDS) and

support for the aims of Part H of Building Regulations.

Advantages include:

AquaGrid NEW SOLUTION

5

Trafficable pervious paving system.

Comprising 500 x 500mm (nominal) square

sections of plastic grid designed to receive

pervious infill material (gravel or grass).

For capture and infiltration of rainwater.

Applications

For direct infiltration into the ground or into

an underground attenuation structure.

Particularly recommended for car parks,

access roads, verge reinforcement

and landscaped areas.

May be used in conjunction

with AquaCell or AquaCell Lite

(see pages 10-11)

Domestic channel surface water capture

system with grating. Made from recycled

polypropylene to provide a lightweight system

for collection and drainage of surface water

around a property.

z In 1 metre lengths: quick and easy to cut to size on site

z Interlocking units enabling connection into a run withoutrequiring connector plates

z Self-locking anti-slip grating with narrow slots to ensure no catching of thin heels or small wheels

Recently added to the Domestic range of OSMA Channel Drainage Systems.

Advantages include:

RainChannel NEW SOLUTION

6

Applications

For all domestic exterior environments. Particularly

recommended for paths, patios and other garden areas.


Increased frequency of sudden heavy downpours

that could leave standing surface water on

impermeable surfaces.

catch

A clean catch is a winner

every time.

Whether it’s a drizzle or a deluge,

it’s vital to capture rainwater

wherever it falls, especially if

it has nowhere to drain away

naturally.

z Narrow streamline grating for minimum visual impact

z Lightweight PVC-U unit: 1.2 metre length

z Quick and easy to install –before or after door fitting

z Low maintenance: grating easily removable for cleaning

A specially-designed addition to OSMA Channel Drainage Systems for Domestic applications.


Part M of the Building Regulations –

concerning access for the disabled

occupants/visitors.

Advantages include:

Threshold Channel NEW SOLUTION

7

Slim-line domestic channel system to enable

level access in front of domestic doorways.

Applications

For installation outside domestic doorways.

Particularly recommended for doorways of

buildings requiring optimum access for the

elderly and disabled.

Specialised component to help safer maintenance of OSMA Surface Water Drainage Systems: OsmaDrain, UltraRib and TwinWall.

Non-Entry Inspection Chamber

8

Non-man access chamber to enable above

ground inspection and maintenance of 110mm,

150mm and 160mm diameter surface water

drainage pipelines up to 3.0m deep.

Applications

For maintenance access to non-adoptable domestic

and industrial/commercial drainage pipework.


New regulations allowing non-entry inspection

chambers for buried pipework at depths greater

than 1.2m deep; and reduced Health & Safety risks

(compared with traditional concrete techniques)

during installation and ongoing maintenance.

z Lightweight, easy to handle on site

z Faster installation

z Shaft easily cut to required depth

z Base connects to 110mm and 160mmOsmaDrain and 150mm UltraRib

z Connections can be made to 150mmTwinWall via adaptors

Advantages include:

convey

Smooth running always gets

you there quicker.

Wherever it needs to go, captured

rainfall must be sent on its way

quickly and cleanly. This may be

surface water captured by gullies

and channels, or sub-surface

water that’s naturally infiltrated

into the ground.

z Strong polypropylene construction

z Significantly lighter than traditional concrete ring manholes

z Easier to handle on site: no heavy machinery required

z Shaft easily cut to requireddepth

z Can be easily installed withinone day: saves time and costs

z Reduces risks to site personnel

z Flexible sockets allow up to7.5° movement in any direction

Non-entry access component to help safer maintenance of OSMA Surface Water Drainage Systems: UltraRib and (via adaptor) TwinWall.

Advantages include:

Tegra 600 NEW SOLUTION

9

Robust non-man access chamber to enable

safe inspection and maintenance of 150mm,

225mm and 300mm surface water drainage

pipe networks.

Applications

For maintenance access to non-adoptable domestic

and industrial/commercial drainage pipework.


New regulations allowing non-entry inspection chambers

for buried pipework at depths greater than 1.2m deep;

and reduced Health & Safety risks (compared with

traditional concrete techniques) during installation and

ongoing maintenance.

7.5°

Highly versatile systems for below ground

control and management of Rain and Storm

Water – and to contribute to Sustainable

Drainage Systems [SUDS]. Complementary

to OSMA Surface Water Drainage Systems

including OsmaDrain, UltraRib and TwinWall.

Applications

For temporary storage and soakaway of rain and

stormwater, to help reduce the risk of flooding. The

complete structure of assembled units is wrapped in

geotextile to allow infiltration into surrounding ground.


Building Regulations that are promoting the use of

soakaways as a primary priority. Supporting the

SUDS need to contain stormwater and release it in

a controlled manner.

Advantages

z 95% void, 190 litre capacity per unit

z Interior construction allows vertical and

horizontal flow

z Lightweight for easy site handling

z Fast installation: significant time and cost

savings compared with other techniques

z Can be configured for all sizes and shapes,

as each project site requires

Highly versatile systems for below ground control and management of Rain andStorm Water – and to contribute to Sustainable Drainage Systems [SUDS].

AquaCell Systemsfor infiltration

10

infiltrate

Give it time to reach where it’s

needed.

The Building Regulations give

rainwater infiltration priority over

discharge into natural watercourses

and main sewers. Good infiltration

requires containment and slow

release into the surrounding

ground to preserve resources

and avoid damage.

z Proven load-bearing capacity of 56 tonnes/m2 vertical

z Can be configured for all sizes and shapes, as each project site requires

z First system to be BBA-certificated (No. 03/4018)

z LABC and STAS-approved, and can meet technical requirements of NHBC

Complementary to OSMA Surface Water Drainage Systems including OsmaDrain, UltraRib and TwinWall.

Advantages include:

z Same dimensions, capacity and connection principles as original AquaCell

z Proven load-bearing capacity of 17.5 tonnes/m2 vertical

z Can be configured for all shapes, as required by individual project site

z LABC and STAS-approved, and can meet technical requirements of NHBC

Advantages include:

AquaCell Blue

11

Very robust modular units for trafficked

installations.

Applications

For all sizes of below ground infiltration or attenuation

tanks that may be subject to trafficking, including

under roads, car parks and commercial depots.

AquaCell Lite GreenLighter version designed for non-trafficked

installations.

Applications

For soakaways and below ground infiltration or

attenuation tanks in non-trafficked areas, including

gardens, parks and landscaped sites

Certificate No. 03/4018

Highly versatile systems for below ground control and management of Rain andStorm Water – and to contribute to Sustainable Drainage Systems (SUDS).

12

Modular lightweight box units, with high

internal void construction. Can be connected

together, using clips or pegs, in single or

multiple layers to create underground

stormwater attenuation and storage

structures of any size or configuration.

Applications

For helping bring stormwater under control, and

retaining it in temporary storage before infiltration or

controlled release into watercourses or sewers,

thereby helping reduce the risk of flooding. The

complete structure of assembled units is wrapped

in a geomembrane (and protective geotextile fleece).


Building Regulations that are promoting attenuation

and temporary storage where infiltration is not possible.

Supporting the SUDS need to contain stormwater and

release it in a controlled manner.

Advantages

z 95% void, 190 litre capacity per unit

z Interior construction quickly brings inflowing water

under control and allows vertical and horizontal flow

z Lightweight for easy site handling

z Fast installation: significant time and cost savings

compared with other techniques for creating

underground storage structures

z Can be configured for all sizes and shapes,

as each project site requires

AquaCell Systemfor attenuation

attenuate

Put it safely away for now,

and save it for something

useful later.

Store rainfall from severe storms

and downpours that threaten

people and property, and you

don’t just give it a potentially

useful future. It’s also making a

sensible choice.

z Can cope with 1 in 150-yearstorm

z No moving parts or filters

z Maintenance-free

z Does not require extra landspace for water-storage facility

z Inlets feed water via a 30mmorifice into the connected storage area

Space-efficient system to provide localised attenuation of stormwater for individual properties, and contribute to SUDS.

Advantages include:

Garastor

13

Non-mechanical control chamber for domestic

property that helps to manage attenuated

stormwater by regulating inflow and outflow.

Connected to a water storage reservoir, either

in a void beneath a garage or made up of

AquaCell or AquaCell Lite units.

Applications

To protect individual houses against localised

stormwater flooding. Typically placed

near garages, beneath driveways

or under soft landscaped areas.

Specific issues

influencing design

Increased frequency of winter storms,

with intense downpours; and the

need to contain stormwater and

release it in a controlled manner at source.

clean

Taking out the bits that aren’t

wanted leaves it in the clear.

When rain and stormwater

moves at speed, it can gather

up leaves, debris and pollutants.

These unwelcome passengers

slow its progress or make it

unusable. It’s time to filter out

the harmful matter.

Separator chambers installed below ground to

provide initial treatment of rain and stormwater

collected from hard surfaces.

Applications

To clean rain and stormwater captured from large

areas of developed ground, by separating and

removing petrol, oil and hard metal fines that have

been picked up by the surface water. Particularly

suitable for roads, car parks, industrial sites and airports.


Increased frequency of sudden intense downpours,

resulting in heavy volumes of surface water flowing

across impermeable surfaces and carrying high levels

of pollutants.

z Can treat up to 95% of rainfall volumes (according to selectedsystem)

z A system providing 100% treatment is available for environmentally sensitive locations

z Efficient and cost-effective

z Prevents most pollutants reachingmain drainage network

Units for integration into OSMA Surface Water Drainage Systems to reduce level of possible pollutants at source rather than exporting them downstream.

Advantages include:

Petrol Separators NEW SOLUTION

14

re-use

Why just throw it away when

it could do a useful turn.

Captured rainwater doesn’t have

to be channelled immediately

into the watercourses. It can

safely take over several routine

roles where drinking-water

quality isn’t necessary.

Systems connected to OSMA Rainwater Systems and designed for integration with OSMA internal plumbing installations,and to capture rainwater from rooftops and divert it for use in place of mains-supplied water.


Pressure on potable water supplies due to changing

rainfall patterns leading to insufficient replenishment of

groundwater; and the need to limit or reduce consumption

of mains-supplied water.

Rainwater Re-useSystem NEW SOLUTION

15

System of components connected to a

dedicated below ground storage tank,

designed to retain rainfall from roofs and

make it available for non-potable applications.

Applications

To create localised supplies of water to be used for

routine functions that do not require drinking-water

quality including: WC flushing, washing machines

and outside taps. For installation in both domestic

and commercial situations.

z Ready to connect complete system

z Filters out leaves and debris frominflowing rainwater

z Fully automatic system includingmonitoring of tank level, and pumpactivated on demand

z Virtually silent operation

z Incorporating mains water top-upwhen there is insufficient rainwaterin reserve

z Capacity of underground tank canbe selected to suit location

z Systems can be tailored to eachsite or application

Advantages include:

we see water management differently

For further information just askWavin always welcomes dialogue with customers

about the many detailed aspects of water

management as they are encountered in the field.

In particular, we are ready to contribute our

extensive experience to helping tackle and over-

come new problems arising from environmental

or regulatory changes, as and when they happen.

To discuss a specific application or project need,

or to request technical advice and information, call

01249 766655

For product literature, call

01249 766333

or email

[email protected]

OSMA SYSTEMS FOR WATER MANAGEMENT

Wavin Plastics LimitedParsonage Way Chippenham Wiltshire SN15 5PN

Tel: 01249 766600Fax: 01249 443286

www.wavin.co.uk W00

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Rain and Storm

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