LURITEC
®
The modular system for stormwater tanks
FASTER PLANNING
FASTER CONSTRUCTION
GREATER SAVINGS
MODULAR
PREMIUM QUALITY
SOPHISTICATED
1
LURITEC
funded by
®
A product of
LURI.watersystems.GmbH
LU RI
IMPRINT
LURI.watersystems.GmbH
a passion for
simplicity
Board of Management
Dipl.-Ing. Ralf Steeg
Benjamin Anders
Köpenicker Str. 48-49
D-10179 Germany
Tel: +49-30-84 71 06 98 0
Fax:+49-30-84 71 06 98 9
Mobil: +49-173-234 56 52 (Mr. Steeg)
Mobil: +49-178-907 67 83 (Mr. Anders)
www.luritec.com
WATERSYSTEMS
The planning and implementation of
®
LURITEC stormwater tanks is performed
in cooperation with bdh-consulting GmbH.
CONTENTS
LURITEC ® modular system for stormwater tanks.........................................4
The challenge: Regional and worldwide.......................................................6
The superior solution.....................................................................................7
Structurally identical elements for enhanced flexibility...............................10
Benefits for planning...................................................................................12
Faster construction......................................................................................13
Subsurface installation of LURITEC ® stormwater tank...............................14
Aboveground installation.............................................................................16
Installation in bodies of water.....................................................................18
In bodies of water with surface utilisation..................................................20
In bodies of water with wastewater treatment............................................22
Storage chambers produced from GRP......................................................24
Technical equipment....................................................................................26
The LURITEC ® cleaning system..................................................................27
About us......................................................................................................28
E-mail
Board of Management:
Dipl.-Ing. Ralf Steeg
[email protected]
Benjamin Anders
[email protected]
Office management
Anna Olschewski
[email protected]
Sales
Dipl.-Ing. Cathrin Berger
[email protected]
Catalogue
Text and editing:
Marita Wittner
Text content, advertising text, new media,
technical text content
www.maritawittner.de
3D rendering: Sven Flechsenhar
Videos: http://vimeo.com/user11391774/videos
Design: studio adhoc GmbH
Agency for holistic communication
www.studioadhoc.de
HRB 102111 B
Berlin-Charlottenburg District Court
Sales Tax ID No: DE249764981
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4
LURITEC MODULAR SYSTEM
FOR STORMWATER TANKS
®
LURI.watersystems has one aim in mind: to construct the finest stormwater tanks to
be found anywhere in the world.
With our years of experience and through intensive research efforts, we have rigorously
tested existing systems to achieve marked improvements that offer our customers
maximum benefits.
For us, this means: simplified planning, construction and operation, enhanced quality
and lower costs. This is how the LURITEC ® modular system has come about.
”Appreciating the tried and tested, and seeking further
enhancement, greater sustainability and cost efficiency
through new ideas.“
Fig: Modular system
with installation parts
(simplified view)
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WATERSYSTEMS
6
THE CHALLENGE:
REGIONAL AND WORLDWIDE
THE SUPERIOR SOLUTION
Our modern and growing cities, metropolitan areas and megacities face a common
challenge worldwide: to create economically viable and ecologically sustainable supply
and waste management infrastructures.
With its modular system, LURITEC ® is conceived for installation below ground, ­a bove
ground and within bodies of water. Many questions, however, proceeded the development of this system:
• How can planning and construction times be reduced?
• How can the costs for constructing stormwater tanks be slashed?
• What material is more suitable and more corrosion resistant than concrete?
• How can effective and automated treatment be implemented?
A marked change has been witnessed in recent
decades with respect to lifestyles and manufacturing
methods worldwide. In terms of wastewater management, shifting trends have had a bearing on the
combined sewer system largely constructed in the
19th century and the separate sewer system built
later, with diminished ability to cope further with
modern technical and hygienic requirements.
With heavy rainfall, wastewater from households,
public roads and industry enters rivers, lakes and the
open ocean in Berlin, New York, London, Budapest,
Paris and in many other cities. Obvious implications
are destruction of fish stocks and bathing restrictions,
the jeopardising of drinking water supplies and the
lasting contamination of bodies of water with heavy
metals.
To reduce these effects and to ease the burden on
the sewerage system, concrete temporary storage
tanks – stormwater tanks – installed below ground
are predominantly used in modern wastewater
management.
These tanks necessitate extended planning and
construction times and owing to their high cost of
installation and susceptibility to corrosion, present
a heavy burden for local authorities.
The LURITEC ® modular system faced distinct
challenges. The aim was to improve on conventional
systems, and to keep in mind the benefits to
the customer and quality as a top priority. Yet the
most important factor of all: to realise virtually fully
automated and cost-efficient operation.
With components for a perfect
stormwater tank
The benefits of the LURITEC ® modular system are
based on the effective combination of recumbent
and upright, large-sized pipes. The containers are
standardised in diameter and are joined together
in plants.
The full equipment assembly and components
necessary for the operation of stormwater tanks
are installed as far as possible while still at the
factory. In addition to easing logistics, this facilitates
industrial and weather-independent pre-fabrication
away from the installation site and precision co­ordi­nation of all assembly sections.
“The modular system saves costs in planning and
during the construction phase. It’s conceivable that
you might even forget you have a stormwater tank
thereafter owing to its seamless operation.”
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WATERSYSTEMS
This flexible and cost-efficient modular system con­structed to DWA specifications and codes of practice is made possible by a very special material:
GRP (glass fibre reinforced plastic). The high quality,
precision manufacture and low weight facilitate the
production of stormwater tanks tailored precisely to
the intended purpose, with application below and
above ground and in bodies of water possible.
Corrosion resulting from biogenic hydrogen sulphides,
as in the case of concrete tanks, does not occur.
“Cost benefits are frequently achievable owing to
suitable material selection.” (Worksheet DWA-A 166)
The round shape of the containers and the reduced
ground area offer unbeatable advantages when it
comes to cleaning in particular. Through the combination of upright and horizontal piping and the
minimal surface roughness on walls owing to the
choice of material, virtually no deposits remain
on walls. Remaining residues are eliminated in the
cleaning procedure developed by LURI.watersystems purposefully tailored to the plants. This
hugely reduces operating costs for tank cleaning.
“Manual cleaning is not usually necessary owing to
the material and tank geometry.”
8
LURITEC
®
means for you: Faster planning, faster construction, greater savings.
A product of
LURI.watersystems.GmbH
Sample storage/volume approx. 375 m3
Access shaft DN 1000
Structural height, structural length and volumes are variable
Access ladder
Structural height 10.42 m
DN 3000 piping/
Wall thickness 56.60 mm
Agitator
Pump
Structura
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WATERSYSTEMS
l length 2
3.10 m
Pump sump
10
STRUCTURALLY IDENTICAL
ELEMENTS FOR ENHANCED
FLEXIBILITY
LURITEC ® plants comprise a combination of virtually upright and horizontally recumbent pipes. A horizontal DN 3000 pipe onto which DN 3000 T-pieces are laminated
serves as the base component.
• GRP pressure pipe line DN 3000, SN 10000
• Volume/metres: 6.84 m3
• Low weight: per metre approx. 1,000 kg
• Wall thickness: 56.6 mm
• Wall surface roughness: k < 0.02 mm
• pH consistency of 2–12
• Precision coupling produced from GRP
with elastomer seal
The base component is 4.5 metres in length and
has a volume of approx. 36 m³. Vertical DN 3000
pipes are fitted to the T-pieces as domes according
to the envisaged height. The manufacturer coupling
connects the two components. The vertical component has a flexible length of two to six metres and a
volume of up to 39 m³ (fig.). The sum of the horizontal base component and vertical dome produces a
volume of up to 75 m³.
“The water level of the stormwater tank should be
set as high as possible and the base of the tank
as low as possible to prevent a flat and inefficient
construction.” (Worksheet DWA-A 166)
A cover panel with shaft access, on which a dome
of the required length can be fitted, forms the upper
closure on each container. The static design of the
cover panel follows the specifications for the subsequent load properties.
• Cover panel produced from laminated
reinforced concrete
The base component can be horizontally extended
as required. In confined inner-city locations in
particular, e.g. beneath public roads or at crossings,
this creates storage space that otherwise wouldn’t
be feasible. Depending on the available surface area
and required volume, the system, in addition, can
be installed in several rows. The components are
connected to one another by means of the manufacturer coupling. Parallel rows are connected with a
fast-action coupling, e.g. from Straub or Tekay. With
the storage chamber conceptualised, the next step
involves technical equipping.
• Standard length up to 6 m
• Volume at 6 m length: 41.04 m3
• Base component: T-piece DN 3000,
SN 10000
• T-piece volume: 37.62 m3
“Quality is the product of a passion for detail”
Andreas Tenzer (*1954), German philosopher and
educationalist
Fig.: LURITEC ® base components/horizontal and vertical
component with couplings
(simplified view)
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12
BENEFITS FOR PLANNING
FASTER CONSTRUCTION
Every stormwater tank is unique, and we’re firm believers in this very fact.
With our years of experience in structural planning, we faithfully review every prerequisite for plant construction.
An integral component of our corporate philosophy is to make the individual processes
from plant conceptual drafting to commissioning as transparent, straightforward and
seamless as possible.
Once the planning phase has drawn to a close, the prompt production of components
begins whatever the weather following tender offer and acceptance. The piping is
manufactured at our factory facilities, all necessary connections, ladder attachment
points and accesses are laminated on, and the piping is equipped with all assemblies
and attachment parts required for operation according to customer specifications.
Using GRP in a cast-like process, all parts are prepared for final assembly and manufactured for precise fitting with maximum precision.
Our modular system has enabled us to greatly
simplify the planning process and massively reduce
time outlay. The design process for our tanks,
which are later factory assembled from individuals,
is perfectly adapted to prevailing circumstances at
the site of installation. The prescribed volume is
embedded into the designated surface area in a
foolproof process with LURITEC ®. Adjustments
and modifications in the planning stage are quickly
implemented.
“Components are delivered ready for installation and
require only final assembly on site.”
Owing to standardisation as a modular system,
several versions can be quickly designed with
ease. Later expansion of the system is entirely
possible and can be envisaged as early as the
planning phase should conditions on site allow.
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All service phases are provided according to the fee
structure for architects and engineers [HOAI] and
comprehensive expert consultancy is available up to
commissioning. LURI.watersystems has experienced
specialist engineering partners who can provide all
necessary services. We are more than happy to
work with offices on site.
The components are designed for ease of
handling at the construction site and for straight­
forward coordination of the construction process.
“Special measures, such as sump drainage,
are minimised.”
• Installation-ready assemblies supplied
• Rapid assembly
• No drying up time
“Every stormwater tank is unique, and we’re firm
believers in this very fact.”
• Rapid variant analyses are possible
owing to the modular system
• High standardisation ensures low
fault probability
14
SUBSURFACE INSTALLATION OF
®
LURITEC STORMWATER TANK
Stormwater tanks are predominantly installed underground. In this area of application
too, the LURITEC® modular system offers considerable benefits over conventional
methods.
In contrast to conventional concrete tanks, huge time savings are possible of up to
70% for instance, owing to there being no need for elaborate concrete construction
work on-site and with rapid assembly of components in the excavation trench.
Top soil or paved surfaces are excavated and if
necessary the equipment ground and construction
road laid out. After installing the sheet piling – excavation dimensions calculated from the height, width
and length of the system with pump sump and additional work area according to DIN 4124 and 1610
– the loosened and extracted soils are stored or
disposed of and the waves of sheet piling exposed.
If necessary, sump drainage is established and
operated for the duration of activity. For base stabilisation, the 50-cm thick foundation base is pressed
60 cm into the soft soil. This serves to enhance the
structure and ensures compaction. The binding layer
is simultaneously prepared with the flat surface and
geo-textile.
The LURITEC® system is preassembled at the
factory, including technical equipment components,
and is transported to the installation site by special
transport. At the installation site, the system components are lowered into the excavated trench by
crane or earthmover and connected to the pipeline
couplings of the GRP pipe manufacturer. The installation of GRP components in trench excavations
is standard and is implemented according to codes
of practice.
The excavation is subsequently filled and compacted
in layers with a filling material (gravel, sand etc.)
according to specifications for compacted subsoil
as per DIN 1610
Structural analysis and lift
The structural analysis is calculated individually for
each structure. The analysis includes earth pressure,
water pressure and “loading conditions” such as
water in piping or earth pressure from the exterior.
The rule of thumb 0.75 x nominal diameter DN is
considered lift-proof without additional measures
for the installation of storage tanks. The precision of
the storage tank body produced from GRP ensures
that the assembly sections are technically matched
to one another dependably and in a simple process.
On connecting to the sewerage system and other
media, the system is ready for operation.
Fig: Subsurface system
(simplified view)
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16
ABOVEGROUND INSTALLATION
• Cost-effective solution
• Marketing opportunity on
outer surfaces of containers
• Rapid implementation
• Also suitable as interim solution
• Extendable
LURITEC ® stormwater tanks for aboveground installation are an extremely economical,
freshly engineered solution. Owing to rapid assembly, cost savings of up to 30 % can
be achieved over conventional subsurface stormwater tanks.
Fully equipped ex works, final assembly on a baseplate on-site together with connection to the sewerage system and subterranean pumping station is
all that remains. The system is installed by a crane.
Additional works, such as interrupting existing
pipe­line systems for extended periods, are not
involved.
The UV-resistant LURITEC ® modular system is
suitable for any conceivable aboveground location.
The arrangement of components on the foundation
ground can be simply adapted to the circumstances.
In terms of GRP piping, the construction owner can
choose between many different heights.
“Full excavation works and their associated
costs are avoided”.
Elements produced from GRP have a low weight
and can therefore be installed easily at the site of
application. Aboveground installation also has
many benefits in terms of ecological considerations.
Encroachment into the foundation soil is minimal,
and excavation and sump drainage works are virtually entirely avoided together with their associated
costs. Cost comparison calculations according to
Lawa attest to the efficiency of the system.
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Another unbeatable benefit: The entire planning
process is completed much more quickly. Above­
ground containers – as has long been the case
for drinking water applications – are constructed in
accordance with recognised codes of practice.
A subterranean pumping station is usually required.
On sloped terrain in contrast, filling and emptying
as far as possible is performed by means of gravity
flow. Standard combinations in the case of storm­
water tanks, such as with a metering valve for
instance, are maintained.
In settled areas in particular, where existing subterranean construction leaves virtually no available space,
or where municipal water management measures
need to be taken rapidly, e.g. to prevent damage
caused by heavy rainfall, aboveground installation
is used.
In addition to their primary use as wastewater
storage tanks, the outer surfaces on containers can
also be used for marketing and artistic purposes.
Options include appealing urban designs, vegetation
or as advertising space for revenue generation.
With LURITEC ® plants, municipalities cover not only
their municipal water management requirements,
they enjoy a blank canvas for imaginative artwork
for cities and communities.
Fig. above:
Fig. below:
Variants for exterior styling
Aboveground LURITEC ® system
(simplified view)
with greening
(simplified view)
18
INSTALLATION IN BODIES
OF WATER
Fig: Installation in bodies of
water, single-row
(simplified view)
A key innovation of LURITEC ® systems is that they can be installed in rivers, lakes and
seas. The systems are ideal for instance as elements of integrative municipal and
riverside planning or where insufficient space is available beneath ground in inner-city
environments.
The modular system is securely anchored in the
foundation soil with deep driven steel cased pile
foundations and does not float. When empty too, the
LURITEC ® modular system thus remains submerged.
The driven steel cased pile of the foundation structure
is resilient under pressure and tensile forces. Connected via double T-carriers, the pile provides the support
structure for mounting the storage chamber bodies.
The system is connected directly to the outlet structure. The installation of extended pipe systems, which
is often costly and time-consuming and necessary for
connecting stormwater tanks, is therefore not required.
Adapted to local requirements, the connection to the
sewerage system and the overflow structure for settled
combined water are custom designed. The tanks are
filled by way of gravitational force or via a pumping
station.
Installation is conceived such that the systems are
kept icefree internally and externally in winter.
LURITEC ® systems are furthermore designed to
prevent impact by vessels, and to fully withstand
floodwaters, powerful currents and inundation.
Following heavy rainfall, wastewater can be pumped
into the sewerage system or treated in the plants
on-site in order to be discharged directly into the
surrounding body of water.
By installing in bodies of water, there is virtually no
encroachment on or interruption of the municipal
traffic infrastructure. Extensive excavation works on
subterranean infrastructures and the felling of trees
that is often otherwise necessary are not required.
“Installation in bodies of water as an element of
integrative municipal and riverside planning or where
insufficient space is available beneath ground in
inner-city environments.”
• Directly connected to outlet structure
• Lengthy and cost-intensive pipelines
not necessary for connection to
sewerage network
• Greater flexibility in choice of location
• No restrictions on road traffic
• No changes at surface level
(felling of trees etc.) necessary
Fig: Installation in bodies of
water, triple-row
(simplified view)
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WATERSYSTEMS
20
IN BODIES OF WATER
WITH SURFACE UTILISATION
Fig: Installation in bodies of
water with sun deck
(simplified view)
People love to be by the waterside. Residents in ever increasing numbers flock to
such areas to relax, stroll about, live and work. Local authorities too have recognised
this: The planning of places of interest by local bodies of water has become a focal
point in municipal development.
In many towns and cities, concepts to develop
waterside locations have been successfully realised.
Examples such as London, Munich, Berlin, Copenhagen and Zurich offer contemporary proof of the
added appeal of urban quarters by the waterside.
LURITEC ® offers local authorities a useful tool to kill
two birds with one stone: to improve water quality
and to further enhance city life.
For instance, with the LURITEC ® system installed in
bodies of water, a platform can be fitted to facilitate
a host of usage options. Depending on the size and
location, conceivable options include bars and
restaurants in addition to long walkways and boat
anchorages. Gardens too, habitats and tree and
grove plantations offer further artistic and structural
possibilities.
From decks for sun-seeking city dwellers to developments with pavilions and multi-story structures,
anything is feasible.
LURITEC ® in addition offers a new financing model:
The newly acquired surface area in a prime location
can be leased, rented or sold by municipalities to
contribute towards financing the system.
“LURITEC ® offers local authorities a useful tool to kill
two birds with one stone: to improve water quality
and to further enhance city life.”
• Broadened structural options for town
planning
• Diverse usage options, from green spaces
to vessel anchorages
• Commercialisation of surfaces and thus
potential income generation
Fig: Installation in bodies of
water with gardens
(simplified view)
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22
IN BODIES OF WATER
WITH WASTEWATER TREATMENT
In addition to the storage of overflow from storm and mixed water sewerage systems,
LURITEC ® technology can also be used to treat collected wastewater. Various modular
treatment components are used in this regard and can be dimensioned and if necessary combined according to requirements on process quality.
LURITEC ® can thus be connected to virtually any
wastewater pipe exiting into a body water, in doing
so performing the functions of a decentralised
sewage treatment plant.
In the initial treatment stage, mechanical sedimentation and deposition techniques are used, such as
settling tanks, oil and grease skimming tanks, grills
and fine sieves (if necessary by automation).
In a second stage, the wastewater is biologically
processed, with organic substances broken down
by bacteria. Suitable techniques are also used to
remove nitrogen and phosphorus.
In selecting the biological treatment stage, we use
a number of proven technologies, e.g:
• Aerobic and anaerobic packed bed procedures
• ABR and SBR technologies
• Planted soil filters (“wetlands for wastewater treatment”)
• Activated sludge processes
The technology best suited to the respective project
is carefully selected by LURI.watersystems in the
course of a feasibility study and is always tied to
23 LU RI
WATERSYSTEMS
local characteristics, such as the availability and
dependability of power supply, space requirements,
water discharge consent requirements, results of
environmental auditing, standard of training of
operating personnel and investment and operating
costs.
The LURITEC ® modular system furthermore allows
for the biological wastewater treatment system to
be installed directly within the body of water (e.g.
deep water aeration), whereby treatment of the body
of water and breakdown of the sediment sludge also
occurs. Constructed wetlands can also be integrated
or distributed across the body of water. The LURITEC ® island in this case supports only the components of pretreatment and the necessary control
systems.
All treatment stages are dimensioned according to
wastewater contamination and hydraulic boundary
conditions. We observe in this regard both international dimensioning guidelines and local experience,
by involving experienced, local planning partners.
Wherever possible in terms of technology and
climate, we prefer anaerobic treatment processes
that exhibit much reduced sludge production and
thus avoid followup costs and issues.
Our technology selection is strictly made in due
consideration of later operation: The plants must
be as simple as possible and only as complex as
necessary. The overall LURITEC ® concept always
encompasses the training and tuition of operating
personnel.
An essential element of our approach is to ensure
a robust and issuefree power supply to system
components. Solar cells for instance can be installed
on the island in this regard. It is furthermore possible
to equip the plants with outlet air disodouring
treatment to prevent unpleasant odours. Utilising
wastewater treatment systems to serve commercial
interests therefore does not present a problem.
“Our technology selection is strictly made in due consideration of later operation: The plants must be as simple
as possible and only as complex as necessary.”
Fig: Installation in bodies of
water with planted retention
soil filter
(simplified view)
• Option for decentralised wastewater
treatment
• Wastewater treatment in combination with
commercial surface usage also possible
• Outlet air disodouring treatment prevents
unpleasant odours
• Continuous treatment of surrounding body
of water also possible
24
STORAGE CHAMBERS
PRODUCED FROM GRP
In reactive resin systems, errors in the mixing ratio
of resin components, low processing or hardening
temperatures, and sizing of glass fibres or ties can
cause osmosis.
• Why choose GRP as material?
• What key benefits does GRP have over concrete?
• What can GRP do?
GRP has been used in the area of municipal water management for decades and
demonstrably satisfies the highest requirements on durability, safety, precision and
cost-effectiveness. These special properties have impressed us.
Manufacture and stability
The high-strength composite material consists of
reactive resin, nonswellable quartz sand and integrated glass fibres. A high degree of cross-linking
in the synthetic material and binding to fibre and
filler material components are ensured. All components are resistant to biogenic sulphuric acid.
The production of GRP piping facilitates a qualitatively high manufacturing precision, deviations are
in the millimetre range.
A consistently high quality is achieved through
endless manufacture in the wrapping method.
Shafts and domes, T-pieces and connections as
well as special constructions are produced by
the manufacturer without screw connections or
changing material.
Passages, branch connections and lateral inlets
are manufactured with precision fitting and without
issue with laminate. The connection between the
individual segments is established by means of
coupling technology tried and tested in practice
over decades.
25 LU RI WATERSYSTEMS
Weather-independent manufacture of GRP piping in
the factory setting subject to identical, standardised
and heavily supervised production conditions guarantees maximum precision in manufacturing and
facilitates a qualitatively high manufacturing precision in the millimetre range.
Testing of chemical resistance to corrosion onset in
standardised long-term tests attests to the long
service life of GRP piping for use in wastewater
conduits.
Osmosis
Osmosis or osmotic pressure occurs when processing temperatures are insufficient or chemical com­
ponents in the laminate fail to react to the resin.
Inclusions of highly concentrated resin components
and surrounding (less) concentrated water diffuse
into the material through concentration equalisation.
Through this simple physical process, osmotic
pressure is created, which can lead to bubble
formation depending on environmental conditions.
To avoid this, a high processing and hardening
temperature of 110 degrees Celsius is observed
in the manufacture.
The dreaded osmosis does not occur in the GRP
piping we use. Guaranteed maintenance of mixing
ratios and processing temperatures and perfect,
continuously monitored resin composition are
essential aspects scrupulously and precisely observed by the manufacturer.
Corrosion and durability
Compared to concrete construction works, GRP
piping demonstrates characteristics of long-term
durability according to DIN EN14364. GRP piping
installed 40 years ago remains entirely corrosion
free to this day.
Standardised long-term testing techniques according
to EN1120 and ISO 10952 (unchanged substructure:
ASTM D3681 from 1978) have demonstrated identical results. GRP pipe samples were continuously
exposed to 5 % sul-phuric acid with simultaneous
tensile elongation over a period of 10,000 h (1 year
and 6 weeks). The results can be extended over a
period of up to 150 years and speak for themselves:
The necessary minimum safety coefficient (1.5) is
far outstripped at 2.3 or 3.9 of used GRP piping.
Weight and wall thickness
Handling at the construction site is much easier
than with concrete pipes owing to the low weight.
With a diameter of DN 3000, the wall thickness is
max. 60 mm. The installation time on delivery of the
LURITEC® structural elements is considerable
shorter compared to the construction of concrete
tanks.
Properties
Minimal wall surface roughness (k < 0.03 mm)
produces outstanding self-cleaning properties.
This is ensured by the highly resinous, smooth and
sealed surface. If damage is caused by external
influence, this can be easily rectified through lamination. If the material is installed above ground with
resulting exposure to solar irradiation, there is no
change to the structural integrity and UV resistance
of the piping.
Deformation
Deformation of GRP piping on installation must be
limited to 6% according to standards. The piping
is designed accordingly in the manufacture. The use
of fibres produces not only a high degree of rigidity
and thus reduced intrinsic deformation, but crack
and fracture formation are also impaired. The quartz
sand used adds to the wall structure and thus
contributes to increasing rigidity. In tests, deformation of up to 40% is achieved before fracturing
occurs. Similarly, the high-precision manufactured
couplings with elastomer seal remain entirely free
of damage in these tests. For GRP piping, where
required threshold values are maintained, deformation or fracturing is likewise unproblematic in terms
of long-term properties; this applies to all freely
selectable pressure classes from PN 1 to PN 32.
26
TECHNICAL EQUIPMENT
THE LURITEC ®CLEANING SYSTEM
LURITEC ® systems, as far as possible, come equipped with all technical components
and fixtures ex works. This includes shaft access points and ladders, fill level gauges
and lines, cleaning systems, flow meters and much more. Crucial for all fittings are the
customer’s specifications and requirements with respect to the manufacturers used.
Pumps
Barriers
If it is not possible for the tanks to be filled and
drained by means of gravitation force, or if this is
not required for planning reasons, the installation of
one or more pumps is necessary. As on conventional
systems, both pump-powered filling and draining
are possible without limitation. These are installed in
the pump sump charged by the manufacturer. Both
dry assembled pumps and submersible motor-driven
pumps can be installed. Redundant pumps can be
installed both within the plant and stored externally
as substitutes.
To produce the necessary length for barriers, a
viable option is to feed these through several containers. If tilting barriers are used, the barrier length
can be substantially shortened.
“Specifications for stormwater tanks to be drained by
gravitational force at any cost can result in inefficiently
designed, flat stormwater tanks. The use of pumps for
tank drainage often affords a greater degree of freedom for efficiency in design. Comparative analyses of
construction, operating and upkeep costs are essential
in this regard”. (Worksheet DWA-A 166).
LURITEC ® systems can be effortlessly combined
with a sifting plant.
The choice of fill level gauge, control unit, flow meter
and other components are subject to the specifications of the construction owner.
27 LU RI
WATERSYSTEMS
Switch cabinets
Owing to the upright structure of the pipes, the
low wall surface roughness of the material and the
significant reduction of horizontal surfaces, the
containers are constructed such that deposit buildup is virtually impossible and cleaning outlay is
reduced to a minimum.
Options include external cabinets for installation
outdoors, installation in containers and installation in
buildings outside of the actual system. The range
encompasses several materials and manufacturers.
Designed and precisely attuned to the system
geometry, LURI.watersystems has also constructed
a nozzle assembly for cleaning that borrows from
the tank cleaning system.
Sifting plants
“The cleaning concept from LURITEC ® is intended to
fully eliminate the need for manual cleaning methods.”
Systems for advanced wastewater treatment:
See cleaning section
The nozzle system can be installed in any upright
container and is mounted on a float at the end of a
maintenance-free stainless steel connecting rod.
In the idle state, the nozzle is positioned centrally
at the base of the storage chamber. If the level in
the storage chamber rises, the float with the nozzle
likewise rises up to the maximum fill level. As the
level drops on draining, the system is activated via
a signal for fill level measurement and cleans the
tank walls and base with a 360-degree jet stream in
a continuous process as the water level decreases.
Small volumes of drinking quality water are used as
the medium in cleaning. The drinking quality water
and wastewater circuits in this regard are strictly
separate.
“Cleaning is performed in the LURITEC ® system only
up to the level in the storage chamber contaminated.”
In horizontal piping, agitators are used to swirl up
deposits prior to draining the system, and these
are then forced by the current towards the pump
sump from where they are pumped out of the
system.
To facilitate manual cleaning if required, a pressure
pipe system can be installed for connecting a
C-pipe.
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ABOUT US
Water is the world’s most important resource and essential for flora and fauna
to thrive. Keeping pure our waterways, lakes and seas is what we strive for.
This is the mission of the LURI.watersystems team.
Founded in 2006, the LURITEC ® modular system
came into being after five years of research endeavour together with TU Berlin, the Centre of Competence for Water and cooperating engineering firms.
Development of the new technology was funded
by the Berlin Centre of Competence for Water, the
German Environment Foundation and the German
Federal Ministry of Education and Research.
The pilot system “SPREE2011” in Berlin’s Osthafen
was established in 2012.
Highlevel national and international exhibition attendances ensured huge global interest in this
new modular system.
In 2008, LURITEC ® was heralded as a forwardlooking technology by the Council for Sustainability
of the Federal Republic of Germany. In 2014,
LURITEC® was nominated for short listing for the
Zumtobel Group Award – Innovations for sustain­
ability and humanity in the built Environment.
This brochure serves as a guide. All drawings and
plans are for illustration purposes only. All values
indicated in product specifications are nominal
values.
We do not accept any liability for accuracy in this
regard.
Likewise, we do not accept any liability for loss
or damage that may result from the assembly or
application of products listed in this guide, as we
have not specified the degree of due diligence
­required for product installation or maintenance.
We welcome your comments on this brochure.
Together with its partners, LURI.watersystems offers
the full range of services necessary for the project
planning, construction monitoring and planned
implementation of stormwater tanks. These include:
Feasibility studies, urban blueprints and expert
assessments, the full range of services for HOAI
phases 1–9, construction site surveys, stability
verification, hydrodynamic sewerage system
­calculations and many others.
The LURITEC ® modular system was exhibited at the following
exhibition events from 2008 to 2011:
• Aedes Architecture Forum
• Venice Architecture Biennial, German pavilion,
“Updating Germany – Projects for a Better Future”
• Frankfurt Architecture Museum
• Shanghai EXPO, German pavilion
• “WeltWissen. 300 years of sciences in Berlin”,
Exhibition in the Martin-Gropius-Bau exhibition hall
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WATERSYSTEMS
The planning and implementation of LURITEC ®
stormwater tanks is performed in close cooperation
with bdh-consulting GmbH. bdh-consulting GmbH
has been involved in the development and implementation of innovative solutions for the wastewater,
water supply, waterways, infrastructure, energy and
economic consulting sectors since 1984.
www.bdh-consulting.de
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LU RI
WATERSYSTEMS
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