Lightweight, InsulatingBuilding Materials

- Nature's Own Material

Bulk LECA®

Page 6

Solid-based FloorsSlope Construction on RoofsLight FillRoof Gardens

LECA® BlocksPage 8

Outer WallsInner-leaf WallsPartitionsLecaterm® blocksBasement WallsFoundations

LECA® ProductsPage 4

LECA® ElementsPage 11

Floor SlabsWall Panels

SpecialProducts andApplicationsPage 12

Cleaning filter

Floating Layer in LiquidManure Storage Tanks

Lightweight Mortar

Lecamix®

Hydroculture

Structural Concrete

LECA consists of small, strong, lightweight andthermally insulating particles of burnt clay.

LECA is manufactured worldwide, from naturalmaterials. LECA products may therefore vary indi-vidually from country to country, but the manufac-turing methods and the benefits are the sameeverywhere.

Product DataPage 14

Page 19

4

The Most Lightwe

LECA coated and LECA·light coatedare Danish special product whichcombines thermal-insulation propertieswith non-capillary characteristics.

1.

LECA can be blown direct to the point of applica-tion through flexible hoses. The capacity is typically more than 1 m³ of LECAper minute.

2.

LECA can be delivered in bulk by lorries carryingup to 103 m³ at a time.

3.

LECA is also supplied in big-bags and 100 litreand 50 litre sacks. 1

2 3

An environment-friendly, natural product made fromplastic clay, LECA is inde-

structible, frost-resistant, non-combustible and

impervious to dry-rot, wet-rotand insect attack

LECA is an extremely lightweight,strong and thermally insulatingmaterial. These are valuable pro-perties when establishing solid-based floors, applying structuralfill, growing plants, and insulatingbasements, terraces and roofs.The size of the LECA particlesdetermines which property is pre-dominant and how the product isutilised in practice. LECA is there-fore available in different sizes fordifferent purposes.

Danish LECA and LECA·light arealso available in coated form forsolidbased floors. The coating,which is wholly non-toxic, impartswaterrepelling properties andensures that moisture absorptionfrom the soil does not extendbeyond the base layer of LECA orLECA·light.

LECA is the prime constituent inmany building materials, includingindustrially-made wall blocks andstructural components. LECA canalso usefully be employed in struc-tural concrete and lightweight mor-tar.

5

ight Building Materials

Blocks

Danish LECA blocks provideeffective protection againstthermal bridge and are suit-

able for foundations,floors and walls.

The blocks are easy to workwith and provide excellent

key for subsequent render ormortar application

LECA is used for making solidblocks of lightweight concrete, hol-low blocks and Lecaterm blocks.

LECA solid blocks are suitable forinner-leaf walls, foundations, base-ment walls, partitions and outerwalls. Specially-made LECA floorblocks for solid-based floors arealso available.

Special feature blocks like the hol-low block and the grooved blockare used for specific applications.The hollow block is especially use-ful as top of foundation under cavi-ty walls.

The grooved block gives the pos-sibility to make reinforced base-ment walls.Lecaterm blocks are made ofLECA lightweight concrete andfoam plastic. Lecaterm is a com-plete building system consisting ofstraight blocks and corner blocks.Lecaterm blocks are used for outerwalls an foundations.

Elements

LECA lightweight aggregateconcrete is used for wall

panels and for floor and roofslabs

LECA wall panels and floor slabsform parts of a building system.The elements are specially fabri-cated for the individual project andare therefore compatible withalmost any construction method. The wall panels are available in

densities of 900-1800 kg/m³,according to requirements forstrength, sound insulation and sur-face. LECA floor and roof slabs areavailable as thermally insulatingsandwich elements or sound-insu-lating, solid floor slabs.

Solid blocks

Hollow block

Lecaterm blocks

Grooved block

6

Solid-basedFloors Danish LECA is exceptionally

well suited for solid-basedfloors.

LECA has thermally insula-ting, water-repelling andnon-capillary properties

and provides simple,lightweight floor construc-

tions at competitive prices

Coated LECALECA coated and LECA·lightcoated can be deposited inbulk and used for solid-basedfloors. There is no wastage asthe nodules adapt themselvescompletely along foundationsand around drains.

LECA Floor BlocksSolid-based floors can be con-structed entirely of LECA floorblocks. The blocks have ther-mally insulating and non-capillaryproperties and can be surface-strengthened with a grout wash ofcement or sand. The blocks are then ready for thenext stage of the floor construc-tion.

LECA Lightweight ConcreteLECA lightweight concrete 1:8 canbe used for filling purposes and inareas where form stability is alsoessential.

SlopeConstructionon Roofs

LECA makes it easy to con-struct slopes on flat roofs

and carry out roof insulationat the same time

General ProcedureDeposit the LECA and level to therequired gradient.Apply welded LECA netting to sta-bilise the surface.Roll the surface and lay sheets ofmineral wool for added insulation. Finish by installing underpaperand roofing.

LECA can also beused to fill cavities inan existing roof sur-face prior to renova-tion. This avoids softareas in the new roof.

Form-stable Finish In areas of the roof destined forlater structural penetration theLECA can be mixed with cementand water.

Bulk LECA®

7

Light Fill

LECA can be used aslightweight fill in cases wherethere is a need to ensure sta-

bility, prevent settlementand compensate for heavy

loads

StabilityLECA light fill provides in-creased stability for em-bankments built on clayinclines, for sheet-pileharbour walls and forcoastal road construc-tion. LECA can be usedto prevent land slides orpiling failure at noise-abatement rampartsalong roads or buildingswith pile footings.

SettlementPreventionLECA light fill can pre-vent the settlement whichmay occur when roads andembankments built on soft groundare subject to increased loading.Houses which normally requirepile footings can be erected on acushion of LECA light fill.

Load CompensationRoads, buildings and open spacesconstructed on compressibledeposits or sloping ground can beconsolidated with LECA light fill.

Roof Gardens

LECA is ideal for drainagepurposes and slope con-struction in roof gardens

Bulk LECA can be used inroof gardens for drainagepurposes and for con-structing and eliminatingslopes. With its combina-tion of effective drainageand low density, LECA isthe perfect material forcreating roof gardens onexisting buildings. Spreada bed of LECA on top ofthe roof membrane andany insulation, then coverthe nodules with a fibrecloth to serve as a basefor the garden proper. The garden can be con-structed using gravel andpaving or soil/Lecamix forplants.

Bulk LECA®

8

Outer Walls,Inner-leaf WallsandPartitions

LECA blocks enable fast,easy building.

LECA blocks provide strong,robust walls and ensure a

healthy indoor climate

Lightweight concrete blocks ofLECA are used for construction ofouter walls, inner-leaf walls andpartitions. LECA blocks are inorganic andimpervious to dry-rot, wet-rot andinsect attack. They are also frost-resistant evenunder extreme temperature condi-tions. In addition, they have excel-lent thermal-retention properties,which contributes to a pleasantindoor climate.

ShapingThe blocks are simple to shapeusing a carbide-toothed cuttingsaw, small jobs being carried outwith a masonry hammer or axe.Division of the blocks is easiest toperform using a standard blockcutter. Chasing and drilling opera-tions in the finished LECA wall arereadily accomplished with a con-crete power tool.

Surface TreatmentLECA is eminently suitable for ren-dering and plastering by bothmanual and mechanical means.

DimensionsFor inner-leaf walls and partitionsDanish LECA blocks are manufac-tured in 100 mm, 150 mm and 190mm thicknesses.The 100 mm and 150 mm sizesare normally used for cavity wallsand curtain walls. The length andheight dimensions of LECA blocksare 490 mm x 190 mm.

StrengthDanish LECA blocks are suppliedin block class 3.0 MPa with a den-sity of 600 kg/m³.

BeamsWall beams are made of LECA con-crete with a density of 1400 kg/m³.Wall beams are manufactured inthe same width and height dimen-sions as LECA blocks and inlengths up to 3.49 m.

BricksFor masonry infill, partitions andrepairs use LECA class 4 brickswhich have a density of 700 kg/m³.

LECA® Blocks

9

BasementWalls

LECA provides warm, drybasements. As well as a sub-

stantial weight-saving com-pared with conventionally-

cast basement walls

By virtue of their high strength,excellent thermal-insulation prop-erties, frost resistance and minimalmoisture absorption, LECA blocksare the ideal solution for basementouter walls.A special grooved LECA blockprovides possibillity to place rein-forcement in the bed joints.

Below ground level, basementwalls built of LECA blocks must begrounded, asphalted and coatedwith cement mortar.Basement walls must always beequipped with perimeter drains. Wall drainage can be establishedwith 50 mm or 75 mm LECA drain-age blocks or using bulk LECA.

Foundations

Danish LECA blocks provideeffective termination of cold

conduction in foundations

Capping the head of outer-wallfoundations with two rows ofLECA blocks, provides effectivefloor protection at the cold-criticalpoint adjacent to the concreteslab. LECA blocks can also be used tocap internal foundations, thus ter-minating the moisture and cold

conduction which otherwise origi-nates from the foundation con-crete. Standard-size LECA bricks (100 x55 x 230 mm) can be used fortransition purposes at foundations.

For foundations subjected toheavy loads, LECA class 5.0 MPahigh-strength blocks can be used. For foundation subject to 1½-storehouses LECA class 2.0 MPa light-weight blocks can be used.

Where extra foundation insulationis required, use Lecaterm-blocks. For application below cavity walls,use LECA hollow blocks. These are available in widths of290 mm and 330 mm.

LECA® Blocks

Lecaterm®

Blocks

Each Lecaterm block is asection of fully-insulated

outer wall

Lecaterm blocks are part of acomplete building system whichincludes thermal insulation strips,joint reinforcement and stainless-steel wall ties. The finishedLecaterm blocks are produced inthree versions.The lenght is 490 mm and theheight is 190 mm. The width is 330 mm, 350 mm and390 mm respectively.

11

LECA FloorSlabs

Effective sound insulationbetween apartments.

Self-supporting up to 6.4 m.Simple site erection

LECA Sandwich ElementsLECA sandwich elements arecomposed of alternate layers ofLECA high-strength concrete andLECA thermally insulating, light-weight concrete. Openings maybe constructed to half the width ofthe element without compromisingthe load-bearing capacity.Where necessary, for examplearound openings and near abut-ments, the elements should begrouted solid with LECA concrete.

LECA Sound Insulation SlabsLECA sound insulation slabs areself-supporting, homogeneouselements made of LECA concreteand loadbearing reinforcement. They are aspecially intended forfloors in apartment blocks.

LECA Acoustic Roof SlabsLECA acoustic roof slabs may besandwich elements or sound insu-lation slabs provided with a 20 mmlayer of LECA acoustic concreteon the underside. The acousticconcrete creates a rustic, fabric-like ceiling.

LECA WallPanels

A building system for shellconstructions in which theindividual components are

specially fabricated to order.Compatible with almost any

construction method

LECA wall panelscan be used forinner-leaf walls,panel walls, parti-tion walls, soundinsulation andbasement walls.The panels aremade in lengths upto 6 m, thicknessesof 10-24 cm, andstorey heights upto 2.70 m, as stan-dard.

The panels, which incorporateshrinkage reinforcement, are sup-plied to order in densities from900-1800kg/m³.

Pre-installed ComponentsLECA wall panels can be deliveredpre-installed with electrical boxes,

conduits and polystyrene blocks,which greatly facilitates on-siteassembly. Large-size installationopenings can also be provided atthe factory, smaller pipewaysbeing easily constructed on site.

LECA® Elements

LECA® has multi-

12

Cleaning filterInexpensive, environment-

friendly treatment of house-hold sewage in areas not

connected to sewer systems

A bed of LECA can be used as acleaning filter in conjunction withboth new and existing sewageinstallations. Outflows fromkitchen, bath and WC are passedto a septic tank from which thesewage flows to the cleaning filter.

A cleaning filter is highly effective;controlled experiments have quan-tified the expected breakdown ofsewage wastes as

Bi5 90%Suspended materials 70%Ammonia/ammonium 45%Total nitrogen 30%Total phosphorous 30%

where Bi5 = biological oxygenconsumption over a five-day peri-od, ie. the amount of oxygen usedby the microorganisms to breakdown the organic substances inthe course of five days. In the experiments the pH-value ofthe filtered sewage averaged aconstant 7.8.

Floating Layerin LiquidManureStorage Tanks

Eliminates odour problemsquickly, simply and

effectively. Risk of frost damage is also

reduced

Blowing from a roadtanker with blowingdevice, it takes one hourto cover the contents of aliquid manure storagetank with a layer of LECA7-10 cm thick - and to putan effective stop to odourproblems. And if a few grains areeventually dischargedfrom the tank along withthe contents, all well andgood - LECA has soil-improving properties.

LightweightMortar

Special-produced mortar forconstruction and rendering

of masonry

The U-value of complete masonrystructures built with LECA light-weight mortar is superior to thatprovided by conventional mortar.LECA lightweight mortar alsoweighs less than conventionalmortar, which has benefits fortransportation and application. LECA lightweight mortar can be

manufactured locally, whichmeans that compressive strength,density and insulation value canbe adjusted to the requirements ofthe individual factories. DanskLeca A/S supplies LECA directfrom dry storage for production oflightweight mortar.

13

Lecamix®

More vigorous plant growth.Longer-lived plants for the

customer.Protection against root for-

mation due to overwatering.Improved structural stability

and air change in planting soil

Lecamix is a mixture of LECA andpeat moss which improves growthconditions for plants by creating alighter, more porous soil structure.Lecamix is easy to produce andnormally consists of 25% LECAand 75% peat moss. The peat moss used need not beof any one specific type.

Trials have shown that addingmore than 25% LECA does notenhance results further, and thatthe best LECA size is 2-4 mm.

Lecamix is marketed ready-mixedunder the name 'Lecamuld'.

purpose properties

StructuralConcrete

The aggregate used in con-crete structures can often besubstituted by LECA. This is

a cost-effective solutionwhich enables the overall

weight of the construction tobe reduced

LECA structuralconcrete is particu-larly useful where itis required to min-imise the weight ofthe overall con-struction. Lightweight struc-tural concrete isrequired underEuropean stan-dards to have adensity of less than2000 kg/m³.

Using Danish LECA as the aggre-gate, structural concrete can befabricated in strengths of up to 45MPa. Depending on the strengththe density can be varied between1200 and 2000 kg/m³.

The reinforcement must have thestipulated cover layer. However,this layer must not be thinner thanthe largest particle size of theLECA plus 5 mm.

Hydroculture

Excellent plant growth combined with effective

hygiene protection

Plants are efficient air purifiers andcreate a healthy environment.LECA is useful in hydroculturalapplications where minimumattention and maximum hygieneprotection are priority require-ments. LECA is chemically neutraland ensures air penetration toplant roots. At the same time, fun-gal spores, bacteria and insectpests are avoided.

14

ProductDeclarations

Dansk Leca A/S has a QualityManagement System that con-forms to the Quality ManagementSystem Standard DS/EN ISO9001:2001, an EnvironmentalManagement System that con-forms to the EnvironmentalManagement System StandardDS/EN ISO 14001:1996 and aEnergy Management System thatconfirms to the EnegyManagement System Standard DS2403:2001. All systems are certi-fied by Det Norske Veritas.

Bulk density and particle densityare specified dry in accordancewith DIN 4226 and based on 90%confidence level.The crushing strength is alsospecified according to DIN 4226,based on minimum values.The size distribution conforms toDanish Standard DS 405.9.The product acidity is checkedregulary and is always neutral orslightly alkaline.

Product Data

LECA is made of greasy, plasticclay of the montmorillonitic/illitictype. The calcium and magnesiumcontent (in the form of oxides)should be less than 6%.A high iron content in the form ofFe2O3 is desirable.

The expansion of LECA is due togasses generated by oxidation ofthe organic material contained inthe clay, and occurs when the sur-face of the particles has attainedsufficient strength to prevent thegases from escaping from within.

* The values are estimated values.

The values stated are typical values within the declaration limits.

Content of sulphate and chloride conforms to EN 1744-1.

The declared values are expressed in percentage and based on maximum values.

Product Grade Dry bulk density Dry particle density Crushing strengthmm Kg/m³ Kg/m³ MN/m²

0-0.5 600 1150* -

0.5-2.5 330 630* -

LECA 2-4 275 520 1.16*

4-10 255 470 1.12

10-20 215 400 0.78

LECA·light 4-8 215 400 0.66

8-22 170 310 0.40

LECA grade, mm LECA LECA·light

0-0.5 0.5-2.5 2-4 4-10 10-20 4-8 8-22

Chloride content Max. value 0.02 0.02 0.02 0.02 0.02 0.02 0.02

% Typical value 0.002 0.002 0.001 0.002 0.001 0.002 0.001

Sulphate content Max. value 1.0 1.0 1.0 1.0 1.0 1.0 1.0

% Typical value 0.2 0.2 0.2 0.2 0.2 0.2 0.2

15

SizeDistributionCurves

The size distribution curves beloware constructed in accordancewith Danish Standard DS 405.9.The amount passing the mesh isexpressed as percentage byweight.

The curves are upper limit, lowerlimit and typical values

% Gennemfald - LECA 0-0,5 mm

0

20

40

60

80

100

0,063 0,125 0,25 0,5 1 2 4 8

Bulk LECA, 0-0.5 mm

Product Data

Grade, mm Typical surface ares, m²/m³

External Internal

LECA 0.5-2.5 2200* -

2-4 1000* 580

4-10 550 -

10-20 300 451

LECA·light 4-8 600 -

8-22 300 -

Surface AreaThe internal surface area of LECA is readily cal-culated by the Technical University in Denmark,Department of Buildings and Energy.The external surface area of LECA is calculatedbased on the typical mean values of the size dis-tribution curves, the typical mean density andthe percentage of voids at 45%. All particles aretaken to be smooth surfaced spheres. The sur-face area is expressed in square meters of sur-face per. cubic metre of LECA. Grains smallerthan 0.25 mm are not included in the calculation.

%

mm

% Gennemfald - LECA 0,5-2,5 mm

0

20

40

60

80

100

0,063 0,125 0,25 0,5 1 2 4 8

Bulk LECA, 0.5-2.5 mm%

0

20

40

60

80

100

0,063 0,125 0,25 0,5 1 2 4 8

% Gennemfald - LECA 2-4 mm

Bulk LECA, 2-4 mm%

0

20

40

60

80

100

0,25 0,5 1 2 4 8 16 32

% Gennemfald - LECA 4-10 mm

Bulk LECA, 4-10 mm

%

0

20

40

60

80

100

0,25 0,5 1 2 4 8 16 32

% Gennemfald - LECA 10-20 mm

Bulk LECA, 10-20 mm%

0

20

40

60

80

100

0,25 0,5 1 2 4 8 16 32

% Gennemfald - LECA•let 4-8 mm

Bulk LECA·light, 4-8 mm

%

% Gennemfald - LECA•let 8-22 mm

0

20

40

60

80

100

0,25 0,5 1 2 4 8 16 32

Bulk LECA·light, 8-22 mm%

mm mm

mm mm mm

mm

* The values are estimated values.

16

ApplicationCharacteristics

Thermal ConductivityThe thermal conductivity, λ10, isfrequently controlled by DanishTechnological Institute accordingto EN 822, EN 823, EN 12667andISO 8302. The declared thermal conductivity,λdeclared, is calculated on basis of

λ10 according to prEN14063-1:2001. The design thermal con-ductivity λ is calculated on thebasis of national temperature andhumidity conditions. The Danishsafety factor for constructions onground is 1.2.

Grade, mm

LECA, 2-4, 4-10, 10-20 0.085 0.085 1.2 x 0.085

LECA·light, 4-8, 8-22 0.076 0.076 1.2 x 0.076

Roadconstructions 20 >40

Floorconstructions 11-7 -

Industrial floors 6 -

Density in Conjunction withGround Water Level

LECA can, during long time underGround Water Level, obtain max.85% water content in the voids.LECA density, over the surround-ing surface and over GroundWater Level, can be calculated as45% water content in the voids.LECA density, under the surround-ing surface and over GroundWater Level, can be calculated as30% water content in the voids.

Angle of Internal Frictionand Modulus of Elasticity

The Danish Geotechnical Institutehas performed triaxial experimentsto measure the angle of internalfriction and determine modulus ofelesticity for LECA. The results forLECA in road constructions, 10%compacted, is given at a stresslevel at 20 kN/m².

For floor constructions the angleof internal friction and modulus ofelasticity for LECA is detreminedby Danish Technological Institute. For normal ground floor construc-tions the stress level, 8% compact-ed, was 40-275 kN/m².Heavily loaded industrial floors arenormally calculated with a modu-lus of elasticity at 6 MPa.

LECA LECA·light

10-20 mm 4-10 mm 8-22 mm 4-8 mm

Grain density 400 470 310 400

Dry loose density 215 255 170 215

Dry density* 235 280 185 235

Over G.W.L. 30% water content* 385 425 345 385

Over G.W.L. 45% water content* 460 500 425 460

Over G.W.L. 85% water content* 1070 1100 1035 1070

Product Data

Declared thermal conductivityλdeclared, W/m K

Modulusof

elasticityMPa

Angle of

internalfriction

Design thermal conductivityλ, W/m K

Dry Constructionconstruction on ground

* 10% compacted

17

Product Data

Non-capillary PropertiesLECA coated are a special-pur-pose product intended solely foruse as non-capillary layers. Theproduct has been tested by the

Technical University of Denmark(Building Materials and ThermalInsulation Laboratories) and theDanish Technological Institute(Institute of Building Technology).

Reports from both bodies verifythe effectiveness of LECA coatedas a non-capillary material.

Test results 1 2 3

Base layer, 0-2 cm 25.0 25.0 25.0(in contact with water)

Upper layer, 3-20 cm 0.2 0.1 0.1

Test setup

This test was performed by the Buil-ding Materials Laboratory of the Tech-nical University of Denmark in May 1991.

Water absorption stabilised after 14days.

Only the base layer, approx. 2 cm,which was in contact with the water,

had a high moisture content.

The top 3-20 cm had only a hygro-scopic moisture content of 0.1-0.2% byweight.

Moisture content, % weight

Air PermeabilityThe air permeability of a material isan expression for how easily aircan pass through it solely bymeans of difference in pressure. The greater the permeability, theeasier the air penetrates the mate-rial. The air permeability of bulk LECAand LECA blocks has been mea-sured at the Danish TechnologicalInstitute in accordance with Nord-test method NT BUILD 360. Theresults of the analysis are shownhere as the specific permeability ofthe materials expressed as a func-tion of the air velocity.

Specific permeability(m2 x 10-8)

Air velocity(m/s x 10-2)

Plastic bag

Plexiglass tube

LECA coated

Water

00

0,1

0,2

0,3

0,4

0,5

20 40 60 80 100Relativ luftfugtighed i %

Moisture content,% weight

SorptionLike all other building materials,LECA will release or absorb wateruntil a situation of equilibrium isattained with the moisture contentof the ambient air. This can beillustrated by means of sorptioncurves. Sorption isotherms forLECA, at 23 °C, have been deter-mined by the Building MaterialsLaboratory of the TechnicalUniversity of Denmark. Sorptionisotherms have been determinedfor three dry densities of LECA.

325 kg/m³290 kg/m³235 kg/m³

LECA 8/16

LECA 4/8

Floor blocksOrdinary blocks

0.5

0.4

0.3

0.2

0.1

0

Relative humidity, %

19

LECA is a Danish productand stands for Light

Expanded Clay Aggregate.The principle for LECA pro-duction was developed by

the company Lemvigh-Müller& Munck A/S Copenhagen,

Denmark, in 1939. In Denmark, LECA is

manufactured by Dansk Leca A/S at Hinge

near Randers

LECA consists of small, lightweight,bloated particles of burnt clay. The thousands of small, air-filledcavities give LECA its strength andthermal-insulation properties. Thebase material is plastic clay whichis extensively pretreated and thenheated and expanded in a rotarykiln. Finally, the product is burnedat 1100 °C to form the finishedLECA product.

Entirely Natural ProductLECA is an environment-friendly,entirely natural product incorporat-ing the same benefits as tile inbrick form: LECA is indestructible,non-combustible, and impervious to attack by dry-rot, wet-rot andinsects.

Natural Building MaterialLECA is a natural material and aLECA building is a healthy build-ing, so it is no coincidence thatLECA has been used in competi-tion projects for allergy-friendly,healthy homes. Used as a thermal-insulation mate-rial in houses, LECA has been sav-ing energy for more than 50 years,and is now a standard componentin low-energy development pro-jects in Denmark.

Dansk Leca A/S has a QualityManagement System that conformto DS/EN ISO 9001:2000, Environ-mental Management System thatconform to DS/EN ISO14001:1996, and Energy Manage-ment System that conform to DS2403:2001.

The purpose of this brochure is to provideuseful information concerning the proper-ties and application of LECA products.The information is intended to serve as asource of inspiration to persons responsi-ble for the planning and implementation ofindividual projects.

Leca Trading Concession A/S accepts noresponsibility for the information containedin this brochure and no legal liability fordimensioning and project planning per-formed in accordance therewith.

© Leca Trading & Concession A/SVestre Teglgade 16DK-2450 København SV

Phone: +45 31 31 05 33Fax: +45 87 61 44 05Email: leca@leca.dk

LECA is manufacturedaccording to identical princi-

ples in Algeria, Argentina,Austria, Belgium, China,

Denmark, Egypt, Finland,Germany, Iran, Italy, Norway,

Portugal, Sweden,Switzerland and UK

RightsAll rights to the manufacture ofLECA and to the use of thetrademark are owned by LecaTrading & Concession A/S,Copenhagen, Denmark.

Leca International is an organisa-tion of LECA manufacturers com-mitted to LECA research and toexpansion of the LECA concept.

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