precast wall - fehrgroup.com · the precast facade is therefore the ideal solution, suitable for...
TRANSCRIPT
1
PRECAST WALL
Hospital - Angers Architect : Agence G.P.A.A.
fehrgroup.com
22 Precast Wall products
3
A The Advantages of Precast Walls 1. Introduction
2. Construction advantages
3. Sustainable development
B Precast Wall
C Thermal Precast Wall
D Design Precast Wall
E Integral Precast Wall
F Technical requirements - Thermal Precast Wall 1. General points
2.Insulationandfiresafey
3. Control joint
4. Joints between walls
5.Load-bearinganchors(cylindricalandflat)
6.Joineryandraisededges
7.Liftingropesandreinforcements
8. Interim phase
9. Finishing/Installation
10. Transport
G Installation guide 1.Descriptionetareasofuse
2.Generalorganisationandpreparationoftheconstructionsite
3.DeliveryofthePrecastWall
4.InstallationofPrecastWall
5.Safetyfeatures
PRECAST WALL
05
13
06
08
11
38
43
45
46
47
49
52
55
55
58
64
66
75
80
101
19
27
33
37
61
44 Precast Wall products
Rhéna Clinic - Strasbourg
5
The Advantages of Precast WallsPRECAST WALL
A
66 Precast Wall products6
A - The Advantages of Precast Walls1. Introduction
Byoptingforaprojectbasedonprecastconcreteelements,youwillabletorelyonthesupportofourengineeringdesignofficetodefineanoverallsolution:theconcretewall,theinsulation,thefinishofthefacing,theprecastslabs,etc.arealldealtwithatthesametimetoensurethesimplest possible management of the construction site afterwards.
Theflexibilityofourproductionfacilityissuchthatthereisnoneedforseriesproduction:everyelement is made to your measurements.Ourbespokeproductsalsotakeaccountofthespecificcharacteristicsofyourproject.Inaddition,youhavethebenefitofahigher quality des than you would have with cast-in-place concrete.
Theuseofprecastelementswillalsoenableyoutoshorten your construction time : thankstofastinstallationofcourse,butalsothereduction in the number of trades required on the site,makingitsmanagementbytheprimecontractorthatmucheasier.
Less arduous workinvolvedininstallationthanforconventionalformedconcrete,bettersafety,noemanationsofhazardoussubstancesduringinstallationandeasierorganisationoftheconstructionsiteareallfactorsthatcontributetohealthierworkingconditionsforthesiteworkers.
Theprecastfacadeisthereforetheidealsolution,suitablefor all construction site configurations (renovation,presenceofadjoiningbuildings,extensions,etc.)andforsitesinthemostconfinedspaces(urbanenvironments,spotsthataredifficulttoaccess).
short lead times easier management less arduous work suitable for all configurations new build and renovation
UsesCanbeusedforhousesandapartmentblocks,officebuildings,shops,schools,hospitals,sportsandpoolcomplexes,artscentres,silos,retainingwalls,waterproofstructures,deepbeams,etc.
Why choose a Precast Wall?Forfaster,safer,simplerconstruction
7
Remember: Industry-standardqualityoftheprecastproducts–rigorouscontinuousqualitycontrolduringmanufacturing
Bespoke productsConsistentmechanicalperformancesDeliveriescompliantwiththespecificationsAdaptstothespecificsandconstraintsofanyconstructionsiteEasytoinstallSimplifiedorganisationandcoordinationofconstructionsitesFast,flexibleuseandshorterconstructiontimesImprovedsafetyonconstructionsitesAttractivewallfacings–Varietyofsurfacefinishes(colours,textures)Lowenvironmentalimpact–Reducednegativeimpactsoftheconstructionwork and nuisance to neighboursEasy-care,lowmaintenanceLongservicelife Fire and weather protection
88 Precast Wall products
Exclusivelymadetomeasure,Precastwallsoffer:
Incorporation of recesses and openings for :electricalenclosures,ducting,etc. doors and windows
Optimisation of the work on the construction site takingaccountof
thearchitecturalcharacteristicsoftheproject (layoutspecifications)dimensioningspecifictothecapacityofthecraneused
A solution designed and adapted to the configuration ofyourconstructionjob:
newbuild,renovation,adjoiningbuilding,extension
A custom solution
2. Construction advantages
Precast walls make it easier to coordinate the work:
noneedtoworryabouttherotationofthetradesnosaturationofthecrane.
Madeinthefactoryanddelivered“semi-finished”totheconstructionsite,theyensureyoumeet the timingoftheconstruction job.
Just-in-timedeliveryusingself-unloadingtrailersmeansthereisnoriskofsaturatingthebuildingsiteandallowsyoutoregulate the logistics flows.
Optimisation of the construction
9
Controlled costs No investment in formwork.nodepreciationofformwork no maintenance costs
UsingPrecastWallsenablesacontractortoovercomepeaksinactivityifthereismixeduse ofconventionalformedconcreteandPrecastWall
Precastenablesyouto:reducetheimmobilisationofconstructionsiteequipment savemoneyonoverheads
Adaptable to the tightest of spaces Urbanrenovationaccountsforalargepartofconstructionwork.Precastisidealforurban environments and places where access is difficult.
Just-in-timedeliveryavoidsblockingtheaccessestothesites: storageofequipmentislimitedtothesizeofacontainer(9.50m).
PrecastWallisperfectlysuitedto:renovationofbuildingsthebringingintolinewiththelateststandardsofliftshaftsandstairwellsnewconstructionontheedgeofasiteoradjoininganotherbuildingonly20cmofspaceisneededtoplaceaPrecastWall
1010 Precast Wall products
Safe, ergonomic working Quick and easy to install,thePrecastWallrequiresnophysicaleffortorheavyhandling.
Only4handlingoperationsarenecessary: takingthewalloutofthecontainer,placingthewallandshoringit,infillingwithconcreteand treating the joints.
Nooiling(sonoinhalation)Nodirtywork
Automatic unloading of the containerOur self-unloading,lorriesallowforconsiderableflexibilityinsupplyingaconstructionsite,forexampledeliveryavoidingpeakhoursontheroadshelpingtoeasingthetrafficonmainroadsthedaybeforetheweekend.
This“advance”deliveryoftheproductsallowsdeferredinstallation:thebuildingcontractorresponsiblefortheshellwillnotneedtoimmobiliseitscraneforunloadingand can take the walls one at a time as and when needed.
APrecastWallcanbeinstalledby2-3 people(+acraneoperator).
11
3. Sustainable development
Concrete: 100% safe and recyclable a locally produced material low carbon footprint long life and robustness
Concrete, a top-class 100% recyclable materialProducing concrete does not emit much CO2becausethematerialisproducedlocallyanditscomponentsareonlytransportedoververyshortdistancestotheplaceofproduction.Theconcretemix(cement,aggregate,sand,somewater)representsonaverage0.08kgofCO2/kgofconcrete.Tocompare,producing1kgofvealgeneratestheemissionof47kgofCO2(source:ADEME).
Eco-construction – Eco-management – Comfort & Health
Concreteisparticularlyresistant to aggressionsandstressesofallkinds,suchaspollution,corrosion,frostandsoon.Inmanycircumstances,becauseitissoreliable,itistheonlymaterialthatcanbeused.Concrete requires little maintenance, does not favour the development of fungi, has nothing to fear from termites or any other insects and needs no aggressive treatments that are harmful to the environment.
Furthermore,ifweconsidertheentirelifecycleofabuilding(fromtheproductionofthematerialsthroughtothedemolitionofthebuildingattheendofitslife),wefindthat concrete buildings resist better and last longer andaretherefore more economical in terms of energy consumption than those built with other materials.t
School accommodation bloc - BeauneArchitect: X’TO ArchitectesPhoto: Jérôme Beg
1212 Precast Wall products
TheElithisTower:thefirstpositiveenergyresidentialtowerblockintheworldArch. Agence X-TUBlackSwansflats-Strasbourg-Arch.AnneDémiansPhotographer: LN Photos
13
Precast WallPRECAST WALL
B
1414 Precast Wall products
B - Precast Wall The integrated formwork wall
UsesCanbeusedforhousesandapartmentblocks,officebuildings,shops,schools,hospitals,sportsandpoolcomplexes,artscentres,silos,retainingwalls,waterproofstructures,deepbeams,etc.
TECHNICAL DATA (IN LINE WITH THE CURRENT TECHNICAL NOTICE)
Max.dimensions up to 12.34m x 3.80m*
Wallthickness from 16 to 50 cm
Thicknessofskins from 4.5 to 7.5 cm
Concrete class min. C 40/50
Average weight from 280 to 350 kg/m2
Concreteexposureclasses XF1; XA3
* depending on production site; please contact us formoreinformation
Precast concrete skins
Stiffener
Insituconcreteinfill
ThePrecastWallisanintegratedformworkwallconsistingoftwothinreinforcedconcreteskinstiedtogetherandheldapartbymetalstiffenersandacentralvoidforinsitufillingwithready-mixconcrete.
15
1616 Precast Wall products
Some references
AgnèsVardasecondaryschool-LignéArch.Caudron de Coquereaumont / Lebreton
LurcyLéviscommunityhallLMN ArchitectesMixy-Paris
X-TU Architects
UniversityHospital-AngersArch.:G.P.A.A.agency
BurgundySchoolofBusinessDijon
ChaperonVertflats-GentillyAEC Architecture
CollinedeVervilleprimaryschool-MennecyCité Architecture
LesDeuxRivesmedicalcentre-StrasbourgRey-LucquetArchitecte
17
Airbase-BricyArch. Souchier Boullet
Cinema - MoulinsArch. F. Namur
Maupassantflats-DijonAMD Architectes
La Marseillaise tower block - MarseilleArch. Jean Nouvel
Sportshallandartscentre-TrelazéArch. B. Chinours
Odéon tower - MonacoArch. A. Giraldi
STEP VeneuxlesSablons
1818 Precast Wall products
Lazardbuilding-LimonestArchitect: AS Architecture-StudioPhotographer:LucBoegly
19
Thermal Precast WallPRECAST WALL
C
2020 Precast Wall products
C - Thermal Precast WallThe wall with integrated formwork and integrated insulation
sustainable, bespoke solution protected insulation air and watertight suitable for use in earthquake zones
infrastructure uses no restrictions on building height
TECHNICAL DATA (IN LINE WITH THE CURRENT TECHNICAL NOTICE)
Max.dimensions up to 12.34 m x 3.80 m*
Wallthickness from 28 to 50 cm*
Thicknessofskins inner 6 to 7.5 cm / outer 6 to 9 cm
Insulation from 6 cm to 20 cm:polyurethanepolystyrene
Weight approx. 350 kg/m2
Uwall from 0.504 to 350 W/m2.K
* depending on production site; please contact us formoreinformation
Precast concrete skins
Insulation
Insituconcreteinfill
Frame
Stainlesssteelcylindricalsleeveanchorholding the outer skin in place
Structural part
Connector madeoffibreglass,guaranteeingthe
thicknessofthewall,butalsotakinguptheloadsoftheconcreteinfillpouredinsitu,thethermalexpansionandthepressure/
negative pressure due to the wind.
InteriorExterior
UsesCanbeusedforhousesandapartmentblocks,officebuildings,shops,schools,hospitals,sportsandartscentres,industrialbuildings,category2undergroundbasements,etc.
TheThermalPrecastWallisanintegratedformworkwallconsistingoftwothinreinforcedconcreteskinstiedtogetherandheldapartbyasystemofconnectors(compositeconnectorsandload-bearinganchors),withalayerofinsulationontheouterskinprovidingexternalthermalinsulationandacentralvoidforinsitufillingwithready-mixconcrete.
21
2222 Precast Wall products
Thermal performances, fire protectionThermalPrecastWallisawallwithintegratedformworkandintegratedinsulation.Itisthereforeabearingwall,precast,workingontheprincipleofexternal insulation.
ThethermalperformanceoftheThermalPrecastWalldependsonthenatureandthicknessoftheinsulation integrated in the wall. Using polyurethane (PU) or expanded polystyrene (ESP) allow an Uwall varying between 0.504 and 0.13 W/m2.K to be achieved.
Connections(floors,divisionwalls,parapetwalls)constitutesingularpointsinaconstructionthatgenerateheatlossLocatingtheinsulationagainsttheouterskinofthewallofferstheadvantagesofexternalinsulationasiteliminates thermal bridges.
ThermalPrecastWallcanbemade,byaspecialprocessinthefactory,tobefire resistant up to 2 hours.Attheopeningsandhorizontaljoins,Fehrsystematicallyplacesastripofrockwoolinsteadofthepolystyreneorpolyurethane,withaviewtomeetingtherequirementsoffireregulationIT249:fireprotectionofinsulation.
up to Uwall 0.13 W/m2.K with a view to meeting the future RT2020 and passive building standards
thermal comfort winter/summer energy savings acoustic comfort fire and weather protection
Technical performances :Madetomeasure,eachpanelcanbeequippedinthefactorywithjoineryorelectricalfittings,therebyoptimisingcostsandtimingsaswellasguaranteeingconstructionsafety.
23
The Thermal Precast Wall provides comfort in summer. High inertia,due to themassofconcrete, isanadvantage, since thewallaccumulatesheatinthedaytimeandreleasesitatnight.
Thequalitiesof acoustic comfort areprovidedby theconcreteand the insulation. For the same wall thickness, the ThermalPrecastWallwillinsulatemuchbetterthanamasonryortimberormetal-framedwall.
The Precast® Thermique wall gives a building a comfortable atmosphere, with no cold wall effect, whilst eliminating thephenomenaofsuperficialcondensationorinternalcondensationliable to lead to numerous structural issues.
Abuildingdesigned,positionedandorientedtocaptureasmuchheataspossiblefromthesun,goodsealingofthebuildingshell,efficientcounterflowheatrecoveryventilationplusThermalPrecastWallwillguaranteeunequalledairqualityandcomfortinsidethebuildingaswellasmeetingfuturepassive building requirements.
Comfort building occupants
2424 Precast Wall products
Some references
Children’scentre-BourgLesValenceRueRoyaleArchitectes
Special school - BeauneX-TO ArchitectesPhoto: Jérôme Beg
Lazardoffices-LimonestArchitect: AS Architecture-StudioPhotographer:LucBoegly
Lucilineflats-RouenArch. Bureau 112
25
Flats-FontenaysousboisBaudouin Bergeron Architectes
Lidl stores
Fultonflats-ParisA.DaSilva-Graphix-ImagesB.Bülher,BrénacandGonzalezArchitectes
Sportscentre-EntzheimAuger-Rombeaud Architectes
AgnèsVardasecondaryschool-LignéDe Coquereaumont - Lebreton Architectes
Training centre - PlérinArch. Dunet et associés
Hidalgo crèche - ParisArch.P.Quintard-Hofstein
2626 Precast Wall products
L’IndustrieMagnifiqueScreen-printed concrete
27
Design Precast WallPRECAST WALL
D
2828 Precast Wall products
D - Design Precast WallThe 100% aesthetic integrated formwork wall
A made-to-measure industrial product providing a higherqualityoffinishontheupperfacingthanthatofvisibleconcrete.
Thestandardfacingissmoothgreyconcreteforboththe inner and the outer skin.
Theouterskincanbegivenanapplicationofpaint,amineralrendering,athickplasticcoating,amortarrendering (as long as the joints between the panels aremarked).
It is possible to produce coloured concrete façades, false joints, negative reliefs, lettering and pattern imprints (we can also offer imprints made to order for your job).
Theouterskincanalsoserveasasubstrateforcladding or a stone veneer*.
unfinished imprinted coloured screen-printed lasure-coated
* subject to conditions stipulated in the current Technical Notice.
29
Fultonflats-ParisB.Bülher,BrénacandGonzalezArchitectesA.DaSilva-Graphix-Images
3030 Precast Wall products
Some references
Housing Paris
Imagerie des ClairionsAuxerre
Noise barrierNanterre
Archives - BrumathArch.SchweitzeretAssociés
Swimmingpool-BrequignyArch. Berthomieu
31
Airport-EntzheimArch. Serge Brunet
RosaParksschool-IvryArch. Daquin et Ferrière
Chauvet CaveArch. Fabre Speller - Atelier 3A
Anthracite concrete
IPSEN - Isle / Sorgue AFA Architectes
3232 Precast Wall products
33
Integral Precast WallPRECAST WALL
E
3434 Precast Wall products
E - Integral Precast Wall The 100% safe integrated formwork wall
2
10
7
8
3
4
6
5
Technologie,
Sécurité, Productivité,
Environnement
TROPHÉE CRAMIF
2013
brevetFEHRTechnologies
Winner of the Vinci France Innovation Prize
1
9
The Integral Precast Wall product, with its 10 patented solutions, facilitates erection and improves safety while optimising productivity, gaining 44% on the construction site.
TheIntegralPrecastWallcomeswithopeningsprecastinthefactoryandsparesyouallthedisadvantagesofwoodenformworkthatyouwouldhavetoremoveonsite: nostrenuouseffort,riskoffalling,disposalcostsorrecycling.
Theintegratedsteeltie-barsmaketheworklessarduous,asthereisnolongeranyliftingofheavybasketsofreinforcements.
Thedoorthresholdintegratedinthefactoryisarealtime-saver,asitsparesyoutheneedtocutstrengtheningonsite.
1 – Integrated formwork2 – Integrated steel tie-bars3 – Integrated door threshold 4 – Integrated guard rail5 – Safety slings6 – Fastening plate for guard rail7 – Fehr guard rail8 – Secure container9 – Automatic stabilising legs, front – Automatic stabilising legs, rear
12345678910
35
Integrated steel tie-bars 21 32
Integrated safety slings to facilitate handling from the ground5
Fastening plate and guard 76 Secure container98
Opening precast in the factory
aucun déchet
aucun coût de recylcage
aucune pénibilité
aucun risque de chute
1
Guard rail and door threshold integrated in the factory
43
10
no risk of falling
no strenuous effort required
no waste
no recycling costs
3636 Precast Wall products
BurgundySchoolofBusiness-Dijon Architecte : Hervé Régnault
37
Technical requirements Thermal Precast Wall
PRECAST WALLF
3838 Precast Wall products
F - Technical requirements Thermal Precast Wall
Canbeusedforhousesandapartmentblocks,officebuildings,shops,schools,hospitals,sportsandartscentres,industrialbuildings,category2undergroundbasements,etc.
Forundergroundwallsitisnecessarytoprovideadrainandadrainagecomplex(suchasDeltaMS).Thebottomjointmustremainopen(untreated)sothatanywaterthathasaccidentallyentered the shell can get out.Ifthewallispartiallyunderground,itwillbenecessarytoprovideacontroljoint*betweentheunderground part and the above-ground part (*dependingonthestresses,pleasecontactusformoreinformation)
Wallwithintegratedformworkandintegratedinsulation can be bearing walls as long as there isastructuralpartofatleast16cm.
MaximumthicknessundertheTechnicalNotice : 50 cm (depending on production site-pleasecontactusformoreinformation.The dimensions given in the technical notice arethedimensionsinthetables,butnotthemaximumdimensionsthatcanbeproducedonan industrial line.
CompositionofaThermalPrecastWall:–Aprecastinnershell6to7.5cmthickwithalayerofreinforcingbarsandstiffenersspacedamaximumof60cmapartensuringthemonolithicstructurewiththeinfillconcretecore poured in situ.
–Aspacefortheinfillcoretobepouredinsitu:min.8cm(non-bearingwall)ormin.10cm(bearingwall)–Insulation6to20cmthick–Aprecastoutershell6to9cmthickwithalayerofreinforcingbars(ST25C).
Canbeusedforbuildingsneartheseaorexposedtoseaorsaltsprayinaccordance withexposureclassXS1(7cmouterskin, 3cmconcretecover+PM-EScement).UseinbuildingsneartheseaorexposuretoseaorsaltsprayinclassesXS2andXS3andinbuildingsexposedtoveryaggressiveatmospheresisnotcoveredbytheTechnicalNoticeforThermalPrecastWall.
The Thermal Precast Wall is suitable for use in earthquake zones 1 to 4.
1. General points
39
Aucun risque de corrosion ou d’attaque
X0Oui
XC1 XC2 XC3 XC4Oui Oui Oui Oui
Corrosion induite par carbonisation
Corrosion induite par les chlorures - Eau de mer
XS1 XS2 XS3Oui Non Non
Corrosion induite par les chloruresChlorures autre que l’eau de mer
XD1 XD2 XD3Oui Non Non
Attaque gel/dégel
XF1 XF2 XF3 XF4Oui Oui Oui Oui
Environnement Chimique agressifs
XA1 XA2 XA3Non Non Non
Theconcreteoftheprecastskinscanbesand-blasted*,polished*ordeactivated,althoughtheskinconcernedbythetreatmentwillneedtobethicker.*accordingtofeasibility,pleasecontactusformoreinformation.
The materials used to make and install Thermal Precast Wall are :
the concrete of the precast shells the infill concrete, poured on the construction site the polystyrene, polyurethane or rockwool insulation (used only to meet IT 249 : fire protection of insulation)
Expo
sure
cla
sses
Aggressive chemical environment
No risk of corrosion or attack
Yes Yes Yes Yes
Yes No No
Yes Yes Yes Yes
Yes
Yes No No
No No No
Corrosion induced by carbonation
Corrosion induced by chlorides from sea water
Corrosion induced by chlorides other than from sea water
Freeze/thaw attack
4040 Precast Wall products
As the insulated outer skin is not a bearing wall, heavy loads must be fixed to the structural part.Cladding and adhesively bonded coatings are acceptable subject to conditions : surface loads of less than 0.50 kN/m² are permissible, and the fastening of the cladding must not interfere with the free dilation of the insulated skin (must respect the joints between Thermal Precast Wall).
The acoustic performance taken into account for the Thermal Precast Wall is D < or = 30 dB.
Stipulated in the current Technical Notice and validated by the CSTB, the acoustic performance of the Thermal Precast Wall is at least equivalent to that of an cast-in place wall, without taking into account the insulation used.
The walls are limited to 2-hour fire resistance (from the structural part towards the insulated skin).
For the wall dimensions, when we are dealing with a case of an isolated wall such as a column or the corner of a building, a minimum width is defined by the use of a cylindrical sleeve anchor, but also by production issues relating to turning walls and removing them from formwork. A minimum width of 80 cm is required. For smaller dimensions, a special study will be necessary.
When there is one or more openings in the walls the widths of the piers must be at least 30 cm, with at least 1 width or height element that can integrate a load-bearing anchor.
max
.
min. Door or French windows
Window or
SECTION B-B
SECTION A-A
max.
min.
41
It is possible to integrate columns with a structural part that is larger in a certain place (reduces the thickness of the insulation)
Depending on how the walls are cut out, it is sometimes necessary to cut the reinforcing bars of columns or lintels. These reinforcing bars will therefore need to be spliced in the part poured in situ (need to provide splicing hatches), under certain conditions.
Creation at the butt end of the wall
Creation in the wall
If necessary reduce the thickness of the insulation at the place where the column is to be integrated
Reinforcing bar of reinforced concrete column integrated in a Precast Wall
If necessary, reduce the thickness of the insulation at the place where the column is to be integrated
Reinforcing bar of reinforced concrete column integrated in a Precast Walll
4242 Precast Wall products
Example of treatment of a thermal bridge on a parapet wall
Coping stone or waterproofing
Insulation to be added in situ
Seals
43
Reminder :U: heat transfer coefficient (W/m².K)R: Thermal resistance (m².K/W)λ (lambda): thermal conductivity of insulation (W/m.K)ψ (psi): point heat transfer coefficient (W/m.K)
The insulation materials used by FEHR have an ACERMI classification guaranteeing their thermal performances:
The design of panels using only rockwool is not covered by the Technical Notice.
In the standard sections, the insulation is protected by the thickness of the concrete of the inner shell. The outer skin conventionally has a M0 fire classification.
10 cm strips of rockwool are placed in the factory around the edge of the openings to prevent the spread of fire from one floor to the other. This strip of rockwool is increased to 20 cm when it is at the wall’s edge.
In order to cut off any chimney effect in the space dedicated to the insulation between two levels of a building, a fire break must be provided in accordance with IT 249. This can be done by inserting a strip of a material such as high-density rockwool every two levels (every level for buildings subject to the application of “C+D”).
2. Insulation and fire safety The materials used to make and install Thermal Precast Wall are :
the concrete of the precast shells the infill concrete, poured on the construction site the polystyrene, polyurethane or rockwool insulation (used only to meet IT 249 : fire protection of insulation)
4444 Precast Wall products
POLYURETHANELambda = 0.022Thickness(cm)
6789
1011121314151617181920
0.3580.3250.2850.2600.2340.2170.2000.1880.1760.1610.1540.1470.1390.1340.131
2.7903.0743.5073.8514.2764.6104.9935.1905.6736.2146.5036.8227.1717.4787.613
Uwall(W/m2.K)
Rwall(m2.K/W)
EXPANDED POLYSTYRENE ALambda = 0.030Thickness(cm)
6789
1011121314151617181920
0.4720.4210.3750.3390.3100.2850.2620.2470.2320.2130.2030.1920.1830.1760.168
2.1192.3752.6672.9533.2243.5043.8134.0494.3194.6984.9335.2045.4725.6985.958
Uwall(W/m2.K)
Rwall(m2.K/W)
EXPANDED POLYSTYRENE BLambda = 0.032Thickness(cm)
6789
1011121314151617181920
0.5030.4450.3930.3580.3270.3030.2770.2600.2450.2260.2130.2030.1940.1850.177
1.9902.2482.5432.7903.0613.3053.6143.8524.0874.4194.6984.9335.1665.3965.660
Uwall(W/m2.K)
Rwall(m2.K/W)
Example of a calculation of the Uwall value - Thermal coefficient of the Precast Wall
Assumptions:Without any openings, 12 m²4 connectors per m²1 Cylindrical sleeve anchor per wall Outer skin 6 cm thick Inner skin 6 cm thick In situ concrete infill 11 cm
EXTERIOR INTERIOR
HEAT
Inner concrete skinInsulation In situ
concrete infill
Outer concrete skin
45
The positioning of a control joint on a wall is determined by a combination of the insulation thickness and the COMBAR connectors, or the fact that the wall is partially underground
The connectors are dimensioned to take up :
1 - The tensile stresses due to the pouring of the infill concrete (speed of concreting according to the installation guide). 2 - The pressure and negative pressure due to the wind3 - The shearing stresses generated by the differential thermal expansion between the 2 precast shells.
This 3rd stress implies a maximum distance between the dilation centre (generally the same as centre of the cylindrical anchor) and the most distant connector.
Case 2: Insulation < 100 mm
Case 1 : Insulation between 100 mm and 200 mm
𝑙 = 2.40 m for insulation between 60 and 100 mm thick inclusive (< 100 mm).
Example of dimensions with insulation <100mm :
𝑙 = 7.40 m for insulation between 100 and 200 mm thick inclusive.There is no requirement for a control joint in this case with our production dimensions.
Length/height of wallHeight/length of wall
1.00m 5.05m4.95m4.79m4.57m
4.09m
4.40m
3.88m
4.27m
3.74m
1.50m2.00m2.50m
3.25m
2.80m
3.50m
3.00m
3.65m
3. Control joint
Cylindricalsleeveanchor
Axisofcentreofgravityoftheoutershellofthewall
Axisofcentreofgravityoftheoutershellofthewall
4646 Precast Wall products
Load-bearing anchor
Load-bearing anchor
open joint
Seal as provided for by paragraph 6.21
INTERIOR EXTERIOR
Porous backfill
Drainage complex
Drain
Ifthewallispartiallyunderground,itwillbenecessarytoprovideacontroljoint*between the underground part and the above-ground part.
Conditions : The underground part must be at least 70 cm deepThewall’scentreofgravitymustbeaboveground
ThewidthofthejointsbetweenThermalPrecastWallisdeterminedby:
Themanufacturingtoleranceofthepanels(cf.Table§4.4intheTechnicalNotice)Theinstallationtolerance,definedas5mmThethermalexpansionoftheconcreteThedisplacementoftheouterpanelifsubjectedtoanearthquakeload(avoidtherisksofpanelsknockingintoeachother,counter-phasevibration)
Basically,thewidthofthejointsbetweenThermalPrecastWallis2cm.
TheconnectionbetweenThermalPrecastWallmustbecheckedforshearing.ForaskinreinforcementgreaterthanST25Cinanearthquakezone(alsocorrespondstothesectionoftheIntegratedSteelTie-bars),wewillbeobligedtoleaveopeningsintheskinsofatleast20cm.
4 straight bars to be inserted in situ Splice bars to inserted in situ
Box opening in situ
4. Joints between walls
47
Acylindricalanchortakestheweightofitsinsulatedskinalone.Thecylindricalsleeveanchorisnormallyplacedintheverticalpanelatthecentreofgravityoftheprecastshellontheinsulationside.
Inearthquakezonesthenumberofcylindricalanchorsusedmaybehigherduetolowerresistancetoshearing(Art.2.5oftheTechnicalNotice).
LAYOUT elevation
Connector
axis of centre of gravity of the outer shell of the wall
main anchor
Connector
Extra
anc
hor
axis of centre of gravity of the outer shell of the wall
Main anchor
15 15
15 15
<50
<50
from
10 to
30
from 10 to 30
30 30<50 <50
5. Load-bearing anchors (cylindrical and flat)
Cylindrical sleeve anchor
Connector
Load-bearing part
Extra bars if fire exposure
Close-up of the load-bearing anchors and connectors: position of the cylindrical anchor in cross section
For firewalls, the insulation must be at least 80 mm thick.
For a wall exposed to fire, extra anchor bars will be provided in the precast skins, HA6 bars that through the thickness of the core of the cylindrical load-bearing anchor.
4848 Precast Wall products
A Thermal Precast Wall may include several cylindrical sleeve anchors. They are generally placed at the centre of gravity of the insulated skin and will be at least 75 cm apart.
HALFENMVAflatanchorscanbeusedasthemainanchorsundercertainconditions:
6 cm outer skin when the insulation is less than 12 cm thick.
Outer skin must be 8 cm when the insulation is between 12 and 15 cm thick inclusive.
Outer skin must be 8.5 cm when the insulation is more than 15 cm thick.
main cylindrical sleeve anchor
main cylindrical sleeve anchor
Extra cylinder
Extra cylinder
CoG
CoG
1.5d
1.5d
1.5d
1.5d
Axis of opening
Extra anchor (flat) Extra anchor (flat)
CoG
> 3l > 3l
> 3l
> 3l
> 3l > 3l> 3l > 3l
yx
> 3l
> 3l
dmax = 6.00 m
Axis of centre of gravity of the outer shell of the vertical supporting structure
NB: * = flat anchor intended to take up earthquake loads
49
The way joinery is dealt with on Thermal Precast Wall is very important. In all cases, it is prohibited to fix joinery onto the insulated outer skin. Joinery must systematically be fixed onto the structural part of the shell. Recesses are possible for roller shutter boxes or Venetian blinds.
Examples of treatments of openingsDifferenttreatments(lintels,jambliningsandthresholds/breastwalls)
6. Joinery and raised edges
ARockwool insulation
Waterproof membrane
Open jointJoinery
Screws+plugs to fix waterproof membrane
Seals
Roller shutter box fixed onto the load-bearing core
B
Rockwool insulation
Waterproof membrane
Joinery
Screws+plugs to fix waterproof membrane
Seals
Roller shutter box fixed onto the load-bearing core
C
Rockwool insulation
Open joint
Screws+plugs
Fastening lugJoinery
SealsFlashing
D
Rockwool insulation
Fastening lug plugged into the concrete
Interior trim
Seals
ERockwool insulation
Fastening lug plugged into the concrete
Seals
Interior trim
F
Rockwool insulation
Fastening lug plugged into the concrete
Interior trimSeals
GRockwool insulation
Interior claddingSeals
H
Rockwool insulation
Jamb lining trim
5050 Precast Wall products
Examples of installation with Venetian blinds
SECTION SHOWING RECESSING OF VENETIAN
BLINDS INTO PRECAST WALL Polyurethane
Rockwool
A- Polystyrene to removed on construction site after concreting for Venetian blinds or roller shutters
1
SECTION SHOWING RECESSING OF VENETIAN
BLINDS INTO PRECAST WALL
Rockwool
Insulation to be added on construction site
Shutter piece to be added on site
Wooden trim
Ht = 30 cm + insulation added on site
2
Rockwool insulation
Insulation + jamb lining trim
Rockwool insulation Interior cladding
Fastening lug plugged into the concrete
J
L
Rockwool insulation
Rockwool insulation
Rockwool insulation to be added on site
Jamb lining trim
Width to be determined
Integrated wall tie
I
K
51
Opposite is an example of a raised edge possible on a wall to be turned (restriction: lifting ropes will have to cut and the raised edge treated on the construction site)
Possibility of casting raised edges (integrated formwork) on Thermal Precast Wall in the configurations shown below.
* (For Double Raised Edges, count the amount of the option twice)All the raised edges here are only available on walls that are NOT to be turned
A few examples of raised edges
z = wall thickness – 9 cm z = wall thickness – 9 cmx = to be determinedy = 6 cm + th. of insulationx+y = 50 cm maximum
z = wall thickness – 9 cmy = 6 cm + th. of insulation
x = to be determined (50 cm max.)y = 6 cm + th. of insulation
z = wall thickness – 9 cm
*
a = to be determineda = to be determineda = to be determined (50 cm max.)
*
y = 6 cm + th. of insulation
x = to be determined (50 cm max.)y = 6 cm + th. of insulation
*
a = to be determinedb = to be determined
*
a= 20 cm max.y = 6 cm + th. of insulation
*
a = to be determinedy = 6 cm + th. of insulation
z = wall thickness – 9 cma= 20 cm min.
Rockwool
5252 Precast Wall products
ThermalPrecastWallarehandledandliftedusingsteelwireropeswithadiameterof9mmor12mm.Theseropesareintegratedintheprecastreinforcedconcreteshellswhentheyarepoured.Atleast4wireropesareprovidedforeachThermalPrecastWall,i.e.2oneachskin,positionedoppositeeachother.
The panels are handled with tower or mobile cranes. The wire ropes are attached to the crane hook from the ground. On no account must the angle α of the slings be greater than 60°.
For walls < 8.5 tonnes to be lifted straight and turned, use 4 wire ropes diam 9 mm. (SWL 1: 26.2 kN; SWL 3: 19.5 kN)For walls > or = 8.5 tonnes to be lifted straight and turned, use 4 wire ropes diam 12 mm. (SWL 1: 33.2 kN; SWL 3: 19.8 kN)
For 12 mm wire ropes, a reinforcing bar of ST25C minimum is obligatory on the inner skin.
Reminder: The FEHR system of lifting ropes is compliant on walls up to 50 cm thick.
7. Lifting ropes and reinforcements
Fixedleg
notches in the insulation allowing themovementofthehandlingslings.TobefilledinwithPUfoamonce the panel is in position.
Head ring
Sling with adjustable leg
53
Inordertoreducestrenuousworkontheconstructionsiteasmuchaspossible,weofferourcustomers,fortheThermalPrecastWall,asalreadyforthePrecastWall,thepossibilityofremovingtheconcretethresholdstoberecutonsite,subjecttocertainconditions…
WhentheopeninginaThermalPrecastWallallowstheliftingropestobe placed on either side oftheopening,whenthis opening is 1.40 m maximumandthelintelisatleast20cmhigh,wecan remove the concrete thresholds.The minimum width betweentheedgeofthewall and the opening in this case must be 50 cm.
Whentheliftingropesarenotoneithersideoftheopening,andasmallpierisnecessaryattheedgeofthe wall the threshold to be cutremainsnecessaryforthe moment.
Concrete joint sealer placed in the factorytoavoidthethresholdbeingfilledandthereforefacilitatecuttingontheconstructionsite(onlythe2skinstobecut)
1
2
5454 Precast Wall products
Forveryhighwalls(tobeturned)whentheopeningisattheedgeofthewall,thereisnopier or threshold to be cut.
Whentheopeningiscentredonaveryhighwall,itremainsnecessarytohaveanelementtobecutfortheliftingrope.
Concrete joint sealer placed in the factorytoavoidthereinforcementbeingfilledandthereforefacilitatecutting on the construction site (onlythe2skinstobecut)
3
4
55
WheninstallingThermalPrecastWalloneabovetheother,itisnecessarytoplaceashimontheouterskin.
Itisnecessarytomakesuretheouterskinisheldbyanotherdeviceoncetheslingsareremovedfromthewall,incasethetiesareinsufficient.Wherenecessary,theouterskinmustrestonastrongsupportusingshimsthatarerigidenoughtoresist compression
Theshimmingwillbedoneeitheronastrongsupport(provisionalorastructuralelement)orontheouterskinofthePrecastWallbelow,whichisitselfrestingonastrongsupport,withshims.
Theseshimsmaybewedge-shaped,withaheightcorrespondingtothe jointdimensioned. Itwillalso be possible to use shims that are not wedge-shaped with a height corresponding to the joint dimensionedminusthemanufacturingandinstallationtolerances,couplewithanexpandingseal.
TheshimscanberemovedoncethecoreinfillconcreteinthetopPrecastwallhasset.Theshimsmustremovedstartingwiththehighesthorizontaljointsandworkingdowntothelowest.
BelowaretherecommendationsfortreatingthejointsgivenintheTechnicalNotice.Forahouseinalightcolourwithpanelslessthan5.00mlong,thesealantcanbereplacedwithtypei4façaderendering.
Elastic sealants, class SNJF 25 E
Façade wall with paint, lasure, untreated or marked joints
STAN
DARD
SUP
ERST
RUCT
URE
WAL
L SE
CTIO
N
Seal
SealFlexible sealant such as KATAROC PREDALLES
Insulation
Steel ties
Expanding backer rod
Expanding seal
Category 1 sealant, such as SIKAFLEX CONSTRUCTION
Expanding backer rod
Void or space filled with insulating foam or a compressible insulating joint strip
Inner surface
Outer surface
Inner surface
Single-component mortar such as SIKA MONOTOP 612
Self-adhesive waterproofing strip such as SIKA Multiseal
Expanding backer rod
Void or space filled with insulating foam or a compressible insulating joint strip
Insulation
Steel ties
Expanding backer rod
Flexible sealant such as KATAROC PREDALLES
Expanding seal
STAN
DARD
INFR
ASTR
UCTU
RE W
ALL
SECT
ION
8. Interim phase
9. Finishing/Installation
5656 Precast Wall products
Concreteinfill:Themaximumfree-falldistanceHmaxoftheconcretemustnotexceed3m,howeverthickthecoreinfill(withreferencetoArt.1.3“Pouringfrombuckets”ofstandardNFP18-504“Structuralconcreteworkmanship”).Useofconcretechutes
Without carrying out any special studies, concreting rates will be limited to the following values, whatever the spacing of the wall connectors:
Temperature of concrete ≥ 15°C: 70 cm/hTemperature of concrete ≥ 10°C: 60 cm/hTemperature of concrete ≥ 5°C: 50 cm/h
Height of concrete chute :
For heights > 3.00 m the infill must be done :
1 Byintroducingaflexibletube(where the space between thetwoskinsallowsit)
2 Through one or more openings whilst respecting thesamefree-falldistance.
–Thicknessofcoreinfilltobepouredinsitu< or = 9 cm : BPS - NF EN 206/CN - XF1 C25/30* - Dmax 12.5
Recommended consistency target value 200 mm to 220 mm
–Thicknessofcoreinfilltobepouredinsitu> 9 cm : BPS - NF EN 206/CN - XF1 C25/30* - Dmax 16
Recommended consistency target value 200 mm to 220 mm
What type of concrete to order?
Remark:TheinfillconcretemustmeettherequirementsofstandardNFEN206/CNandthespecificationsoftheprojectinquestion.*Thestrengthclassisthatrequiredbythestructuraldesignoffice
and will be at least equivalent to C25/30.
Flexibletube
Concreting opening
3.80mmax.
3.80mmax.
57
Veryhighinfill:
Anexemptionfromtherecommendedconcretingrateof70cm/hispossible,whenfillingaThermalPrecastWallinonepass,uptoaheightof2.30m, aslongasthefollowingmeasuresaretaken:
AspecificstudybyFEHR’sengineeringdesignofficetovalidatetheincreasingoftheinfillheightuptoamaximumvalueof2.30m,byputtinginextraCOMBARconnectorstotakeupthepressurefromthefreshconcrete intheThermalPrecastWall.
Thewallsonwhichsuchfillinghasbeenauthorisedwillbespeciallymarked.Alabelwillbeplacedonthewallspecifyingthatthemaximumfree-falldistanceHmax=2.30mispossibleontheThermalPrecastWallconcerned.
Forthesamephase,allthewallsmustbefilledinonepass,orbefilledattheraterecommendedinthegeneralcaseforwallswithintegratedinsulation. Itisnotpossibletohave2differentfillingratesonthesamephase.
The study will be carried out specifically for each concreting height required.
5858 Precast Wall products
½ Rack no. 1½ Rack no. 2
Max. lgth. walls = 5.00 Max. lgth. walls = 6.00
Itispossibletoplacewallsontopofeachother
2nd rack1st rack5 6
5.95.85.75.65.5
5.15.25.35.45.5
Front rack= 2.70 m
Ht < 1/3 wall
Ht < 2/3 wallHt superposed = 3.00 m max.
2
1
10. Transport
Deliverywith2½containersshouldbeprioritised,therebymakingloadingofthelorriesmoreefficientandcosteffective.
(seetablebelowformax.dimensions)
59
MaupassantflatsDijon
6060 Precast Wall products
61
Installation guidePRECAST WALL
G
6262 Precast Wall products
FEHR safety reminders Safety ismanagedbythinkingandpreparingahead.Preparebystudyingtheplansandtheorganisationoftheconstructionsiteandrefertotheconventionalsafetydevicesproposedintheuserguide.Hardhat,safetyshoes,glovesandworkclothesareobligatoryontheconstructionsite.Theuserdeclaresthathe/sheisawareoftheseinstructionsandundertakestocomplywiththemwheninstallingPrecast Wall.
Measures to be taken in the event of the nonconformity of the Precast Wall : In the event of a nonconformity other than aesthetic or concerning thedimensionaltolerancesofthewall, thePrecast® wall should not be unpacked fromthecontainerornotinstalledifonlyfoundtobedefectiveafterunpacking.Inbothcases,theFEHRengineeringdesignofficemustbecontactedandwillhavesoleauthoritytodecidewhetherwallcanbeinstalledormustbescrapped.
User training :A customer using the Precast®walltechnologyforthefirsttimemustcontactustothattheycanbeassistedbyaFEHRexpertinthepreparationandinstallationofthefirstPrecastWall.Thismeasurecanalsobeofferedonacase-by-casebasisforany*¨PrecastWalluser.
?
Bibliography
INRS, OPPBTP, Assurance Maladie (health insurance). (August 2012). Murs à coffrage intégré MCI - Prescriptions minimals à l’Intégrité à la conception du procédé constructif MCI pour une mise en oeuvre en sécurité (Minimum instructions for safe use of walls with integrated formwork) Editions INRS ED 6118.
FIB, FFB, EGF BTP, OPPBTP, CIMBETON, CERIB. (January 2017) Guide des bonnes pratiques prémur. Editions CERIB.
Currently valid technical notices (Avis techniques) for Precast and Thermal Precast Wall.
Technical data sheets provided by the different manufacturers of the equipment needed for installation.
63
Contents
1 Description & areas of use1.1PrecastWall1.2ThermalPrecastWall
2 Organisation and Preparation of the construction site2.1 Preparing the project: how to read the plans?2.2 Preparing the tools2.3Preparingtheconstructionsitebeforeerection2.4 Marking out the ground and adjusting the levels
3 Delivery of the Precast Wall 3.1Descriptionofthetransportandstorageequipment(container)3.2Delivery3.3 Storage3.4Returningemptycontainers
4 Installation of Precast Wall 4.1UnloadingPrecastWall4.2TurningroundVeryHighPrecastWall4.3InstallingPrecastWallwithintegratedsteeltie-bars4.4InstallingPrecastWallwithoutintegratedsteeltie-bars4.5SpecialcaseofinstallationofPrecast® Thermique4.6Methodofanchoringandtypeofshoring4.7Infillingwithconcrete4.8Treatmentofjoints 4.8.1PrecastWall4.8.2ThermalPrecastWall
5 Safety features5.1Sharedusebuilt-upscaffolding5.2GuardrailsintegratedintoPrecastWall5.3FEHRfasteningplate-mixedadapter-traditionalconstructionsiteguardrails5.4AMPworkplatform
p.64p.64p.65
p.66p.66p.71p.73p.74
p.75p.75p.76p.77p.78
p.80p.81p.82p.85p.87p.89p.90p.92p.92p.95p.99
p.101p.102p.103p.107p.108
6464 Precast Wall products
Areas of useCanbeusedforhousesandapartmentblocks,officebuildings,industrialbuildings,shops,schools,hospitals,sportsandpoolcomplexes,artscentres,silos,retainingwalls,waterproofstructures,deepbeams,etc.
TECHNICAL DATA (IN LINE WITH THE CURRENT TECHNICAL NOTICE)
Max.dimensions up to 12.34 m x 3.80 m*
Wallthickness from 16 to 50 cm*
Thicknessofskins from 4.5 to 7.5 cm
Average weight from 280 to 350 kg/m2
Concrete strength class C40/50
Concreteexposureclass from XC1 to XA3
* dependingonproductionsite;pleasecontactusformoreinformation
1. Description & areas of use1.1 Precast Wall
EachPrecastWallisidentifiedbyalabelensuringitstraceabilityuntil it is integrated in the construction.
ThePrecastWallisanintegratedformworkwallconsistingoftwothinreinforcedconcreteskinstiedtogetherandheldapartbymetalstiffenersandacentralvoidforinsitufillingwithready-mixconcrete.
Precast concrete skins
Stiffener
Insituconcreteinfill
65
TECHNICAL DATA (IN LINE WITH THE CURRENT TECHNICAL NOTICE)
Max.dimensions. up to 12.34 m x 3.80 m*
Wallthickness from 28 to 50 cm*
Thicknessofskins inner 6 to 7.5 cm/outer 6 to 9 cm
Weight approx. 350 kg/m2
Insulation from 6 cm to 20 cm:polyurethanepolystyrene
Uwall from 0.504 to 350 W/m2.K* dependingonproductionsite;pleasecontactusformoreinformation
Areas of useCanbeusedforhousesandapartmentblocks,officebuildings,industrialbuildings,shops,schools,hospitals,sportsandartscentres,industrialbuildings,category2undergroundbasements,etc.
1.2 Thermal Precast Wall
EachThermalPrecastWallisidentifiedbyalabelensuringitstraceabilityuntilitisintegratedin the construction.
TheThermalPrecastWallisanintegratedformworkwallconsistingoftwothinreinforcedconcreteskinstiedtogetherandheldapartbyasystemofconnectors(compositeconnectorsandload-bearinganchors),withalayerofinsulationontheouterskinprovidingexternalthermalinsulationandacentralvoidforinsitufillingwithready-mixconcrete.
Precast concrete skins
Insulation
Insituconcreteinfill
Reinforcement
Stainlesssteelcylindricalsleeveanchorholding the outer skin in place
Structural part
Connector madeoffibreglass,guaranteeingthe
thicknessofthewall,butalsotakinguptheloadsoftheconcreteinfillpouredinsitu,
thethermalexpansionandthepressureandnegative pressure due to the wind.
InteriorsExterior
6666 Precast Wall products
Step 1: prepare the job launch sheet
ItemstobedefinedandprovidedtoFEHR:
•thetechnical,aestheticandenvironmentspecificities•apreciseplanlocatingtheshellsconcernedbythePrecastWallproduct•theconstructionsitelayoutplan,showingpointsofaccessandstorageareasforthecontainers•thetypeofcraneavailableanditsliftingcapacity.NB:useofacranenotinstaticmodeisforbidden•theprogressschedulefortheconstructionsite,zonebyzone,andthedeliveryintervals•thesafetymeasuresthatwillbetakenontheconstructionsite(p.101)•thechoiceofthetypeoftie-barstobeused*(p.84)•theconstructiondrawings:foundations,formwork,steelreinforcements,crosssectionsandrecesses•theconcretingratepreferred
FEHR’sengineeringdesignofficewillworkfromthestructuraldrawings(andtheloadsapplyingtothewallstobebuiltusingPrecastWall)suppliedbythecustomer’sdesignoffice.
FEHR’s design office checks the technical feasibility and optimises the PrecastWall solution based on theinformation provided by the customer, which will be recorded in “information sheets”. These contain therequirementsandconstraintsnecessarytothefeasibilitystudyandtheoptimisedimplementationofthePrecastWall solution (taking intoaccountseismicity,characteristicsof thebuilding land,climaticandenvironmentalconstraints,trafficplan,etc.)
Warning:FEHRforbidsanyuseofaPrecastWallforapurposeotherthanthatforwhichitwasdesignedbytheFEHRdesignoffice.PrecastWallarenotdesignedtoresistearthpressuresduringtheinterimphase.
2. General organisation and preparation of the construction site
2.1 Preparing the project : how to read the plans?
*NB: The choice of the type of tie-bars to be used (i.e. either conventional tie-bars or steel ties integrated in the Precast® walls, when this is technically feasible) is the customer’s decision and must be determined at the time of placing the order.The type of ties will be chosen by the FEHR design office according to the nature of the building and the stresses to be taken up. The details of the solution will be provided on the installation plan. The type of ties recommended will depend on the direction and method of installation. The user must check which type of ties is envisaged on their project.
67
Step 2 : Fehr sends the assembly layout plan
Once the assembly layout plan has been validated, no more changes may be made to the plan or the composition of the deliveries.
What to check and validate in this assembly layout plan?
1.theplacingofthereinforcements2.thelowerandupperlevellingcourses,thelevels3.thelocationsoftherecessesandopenings4.theweightofthewalls5.thelayoutofthewalls
The composition of the depot : list of Precast Wall elements
Chronological depot number withdirectionofinstallationcomposition and direction ofinstallationtobecheckedagainst construction site methodology
No.ofPrecastWallonthe depot
Total area loaded
Job number to quote inanycorrespondence
Site address
WallthicknessesWalldimensions
6868 Precast Wall products
PrecastWallformworkplan Fo
lded
bac
k vi
ewFo
lded
bac
k vi
ew
Concealed side:4 x D9 cable
Ove
rvie
w
69
PrecastWallreinforcementplan
7070 Precast Wall products
Installation plan - 3D view
Step 3 : production
Aftercheckingandvalidatingtheassemblylayoutplan,theplansaresentbyFEHRinelectronicform:–tothecustomer–tothecustomer’sdesignofficeisthishas
been requested.
title block sent back signedand“agreed”
NB:ThesiteforemanmustplanthedatesofthedepotdeliverieswiththeFEHRsupplychain department.
Theas-builtdrawings(DOE)asprovidedonelectronicmedia.
71
2.2 Preparing the equipment
Marking, tracing
Lifting, positioning
Turning
Installation guide
Turner Sling+Pulleykit
Crane
Heeled crowbar
Spirit level and plumb line
Foam tape
All-in-One kit Rope + hook
Shears and disk grinder
Liftingkit
Chalk line Laser level orsurveyor’slevel+ rod
Cansofspraypaint
Plastic shims (differentthicknesses)
Metre Tape measure
Pencil Hammer and nails
Installation plan
All-in-One kit
ON SALEI N O U R S T O R E
7272 Precast Wall products
Adjustment, stabilisation
Treatment of joints
Concrete infill
Screwdriver
Screws H M16 and M20 + washers
Ratchet wrench + sockets
Push-pull props (min.2/wall)
Screws M16
Ballastifnecessary
Forfasteningtotheground: concrete screws ormetalexpansionplugsor femaleexpansionplugs+ bolts and washers
Drill Power bolter (forconcretescrews)
Hose pipe
Concreting bucket
AMP work platform
Wirebrush Float Trowel Backer rod and sealant gun
Articulatedworkplatform (workingheight=max.Precast® height+2m)
Articulatedworkplatform (workingheight=max.Precast® height+2m)
Safety features
AMP work platform
Shared use built-up scaffolding
Integrated guard rail
Traditional construction site guard rails
73
2.3 Preparing the construction site before erection
Safety:GeneralrulesInaccordancewithconstructionsitesafetyrules,it is PROHIBITED to walk under a loaded crane.
Unloading : Planasuitableclearunloadingareaforthelorry(permissiblecrossslopesasshown)atleast25mlong,wherethecontainercanbedepositedandthestabilisinglegsdeployed.
Storage :Provideastorageareaforthecontainerthatisflat,withacompactedorconcretesurface,measuring 2.50 m x12.50m.
Ensurethereisaclearsafetyzoneofatleast1.5timestheheightofthelargestPrecastWallelement
Provideanextrastorageareaof2.50mx12.50mifaturneristobeused.
1
2
3
4
5
DefinethetypeofcraneaccordingtotheweightofthePrecastWallandthedimensionsofthebuildingandwheretolocateit,aswell,ifnecessary,astheturner.
Provideasupporttofixthepush-pullpropsusedtostabilisethePrecastWallontheground :–reinforcedconcreteballast–fixingonthesolidslab,flagging,foundations,etc.
–micropiles
Provideadrainagesystematthefootofthe wall ifitisundergroundorpartiallyunderground andnotsubjecttohydrostaticpressure.
1 - Unloading
3 - Turning2 - Storage
6
Max. cross slope 10%
Safety zone
Max. cross slope 5%
Max. cross slope 5%
Max. cross slope 10%Safety zone
Max. cross slope 5%
Max. cross slope 10%
7474 Precast Wall products
2.4 Anticipating the installation to save time and gain in efficiency : Marking out on the ground and adjusting the levels
1 Checkthatthestarterbarsaresituatedintheconcreteinfilltobepouredinsitu.
2 Mark out theoutlineofthePrecastWallaccordingtothealignmentrequiredwithachalklineorusingstripsofwood.
3 Workoutthepositionoftheelements,takingaccountoftherespectivejoints(cf.installationplan).
4 Identifyhowthepanelsaregoingtobeinstalledatthecorners(thicknessofthePrecastWallcoveredbytheoverhangoftheouterskinofthePrecastWallplacedperpendiculartoit).
5 Checkthelevelofthefoundations,findthehighpointtodeterminethethicknessofthePVCshimsneeded(from3.5to30mm),dependingontheplayprovidedforontheinstallationplanandthetypeofsealingmortar to be used.
6 Secure the starter bars: –loops–hooks–caps(NB: accident prevention bodies do not recommend the use of caps)
7 Makesuretheareaisclearedofanyrubbleetc.tofacilitatetheinstallationofthePrecastWall.
Safety loop
Compatible with the thickness of the walls
75
3. Delivery of the Precast Wall3.1 Description of the containers
ThetransportandstorageequipmentusedbyFEHRarereferredtoas“containers”andtheyareself-unloadingandself-supporting.
Types of use and counter-indicationsFEHR’scontainersareusedtotransportandstorePrecastWallupright.Anyotheruseisstrictlyforbidden.ThestorageofPrecastWalloutthecontainersisforbiddenontheconstructionsite.HandlingofacontainerloadedwithPrecastWallisalsostrictlyforbidden.
DimensionsThecontainerscomein2sizes.
Half-container
4.65 m1.50 m
Standard container
9.50 m1.50 m
7676 Precast Wall products
Reminderofprofessionalrules:–forlifting–andhandlingon
a construction site
HoldersandafrontstopmadeofelastomerprotectandsecurethePrecastWallandtheworkerson site.
Elastomer plates at the ends–bettergrip–avoidssoiling
and scratching
Plateadjustmentsystem:amoreergonomicandsafersolution–noscrewing/unscrewing–lessarduouswork–lessnoise
Tighten
LoosenNB:itisstrictlyforbiddentotightenorloosen the nuts on the end plates Use onlyatightening/looseningbar(notsupplied).
The advantages of the FEHR container
FEHRhasdevelopedandpatentednumeroussolutionstomaketheusePrecastWallmoreergonomicon the construction site.
77
lengthofflatbed12.94m
Standard delivery: Lorry + standard Faymonville trailer :
Short delivery Lorry + short Faymonville trailer :
3.2 DeliveryForthepreparationoftheplatform,seepage73ofthisguide.
Thecontainerisequippedwithfrontstabilisersthatopenautomaticallyandfixedrearstabilisers.
Accordingtoreports2015CERIB4452and2015CERIB4300,thestabilityofthecontainershasbeencheckedinthefollowingconditions:Depositingona5%maximumcrossslopeLongitudinalslopeacceptableforthevehicleandlessthan10%Workingwindspeedof85km/hBearingcapacityofthegroundontheplatformwherethecontainerisdeposited:classPF2platformandsurfaceallowingthelorrytodiver over it without damaging it.5,000Jimpactinanaccidentalsituation
It is essential to ensure these requirements are met when unloading and using the containers.
Atthesametimecarewillbetakentoensurethatintheeventofastronggustofwinddestabilisingthecontainer,ifthelatterfallsoveritwillnotendangeranypersoninthevicinityorthebuilding.
Automaticfrontstabilisers
Fixedrearstabilisers
3.3 Storage
NB : the storage of Precast Wall and Thermal Precast Wall out of the container is forbidden.
lengthofflatbed9.10m
NB :OndeliveryofthePrecastWall,thedeliverynoteissignedelectronicallyusingourFDriverapplication.
7878 Precast Wall products
3.4 Returning empty containers
Usea4-leggedslingsuitedtotheweightofacontainer≤1700kg
Rules for lifting and handling empty containers
Itisforbidden•touseapulley•tomoveacontainerloadedwithPrecastWall•tomoveacontainerusingsitemachinery
2 - Attach the 4-legged sling to the anchor points provided.
1 - Remove the secondary rack
The main rack equipped with stabilisers is welded onto the chassis
Thesecondaryrackisboltedonto the chassis and must be removedbeforehandlingtheemptycontainer
79
•makesurethecontainersareperfectlyaligned• all the stabilisers must be retracted• the racks must be positioned one up against the other •whereapplicable,thesecondaryracks,alreadydismantledbeforelifting,mustbeplacedflatontopofthestackofcontainers,endplates upwards
EachcontainerhasanidentificationnumbercontainedinaQRCode.With FEHR’s FDriver application you can scan this QR Code to facilitate the return process.
NB : Containers must be returned to FEHR in their original condition.
7 half-containers max.
4 classic containers max.
3 - Stack the containers
8080 Precast Wall products
Safety: General instructions
4. Installation of Precast Wall
ThetechnicalliftingsolutionsdevelopedbyFEHRforitsPrecastWallallowmostofthemtobegrippedat2liftingpoints,includingtheheaviestPrecastWallelements.Insomeparticularcases,however,4liftingpointsmaybenecessary;inthesecasesitwillbenecessarytousealiftingbeamtoensuretheloadsareevenlyspreadbetweentheliftingropes.
NB : Lifting the walls flat is strictly forbidden, including for sawing operations on the ground before installation.
- Checktheliftingequipmentisingoodcondition,- Checkthehandlingslingsareingoodcondition:anchoredintheconcrete,noprotrudingedges,
- Theuseofaheadpulleyisforbidden,- Followtheslingingrules,- Ensurethemax.angleof60°betweenthe2legsoftheslingisnotexceeded,- Neverfix2hooksontothesamehandlingslingor2handlingslingsontothesamehook,
- Thebenddiameterofahandlingslingmustnotbelessthantwiceitsdiameter.
- Theuseofa“lattice”cranetoliftPrecastWallistoleratedistheliftingisdoneinstaticmode.Itisforbiddentomovethecranewhencarryingaload.
4.1 Unloading Precast Wall
Instructions for unloading the wall: Thisoperationrequiresthepresenceof2people:oneinchargeofhandlingthewall,the other to oversee the operations.Thewallsmustberemovedfromthecontainerintheorderofpresentation and access to the slings.
Handle the walls with the integrated handling slings(NB:Thehandlingslingsarenotreusable).
81
Handling kit for Precast Wall
Handling kit for Thermal Precast Wall
Fixedleg
forawallweight≤12T:a=tiltangle≤11,5°d=distancebetweenthehighestpointandthelowestpoint:<20%ofthelengthofthewall
d
a
Head ring
Sling with adjustable leg
OverallSWL:14T
Fixedleg
Notches in the insulation allowing themovementofthehandlingslings.TobefilledinwithPUfoamonce the panel is in position.
Head ring
Sling with adjustable leg
ANGLE< 60°!
ON SALEI N O U R S T O R E
ON SALEI N O U R S T O R E
ANGLE< 60°!
8282 Precast Wall products
4.2 Turning Very High Precast Wall
Afterunloading,theVeryHighPrecastWallmustbeplacedintheFEHRturner.
Forthepreparationoftheplatform,seepage73ofthisguide.
Turner with ballasted baseOveralldimensions:4.49mx1.52mWeight:2550kg
– economical– easy to handle (thanks to the red hooks
provided to this effect)– self-loading/unloading without a crane
Hook
Guide wheels
Chock
83
Makesurethereisamaximumslopeandcrossslopeof5%
Cordonofftheareaofmovement
Placetheyellowchock
usingthehandlingkit(p.81),extractthePrecastWallfromthecontainerandplaceitin the turner
Tightentheyellowguidewheelsmoderately
Put the props in place
Puttheturningkitinplace(p.84)
Loosen the guide wheels to release the Precast wall and turn it and then put it in position.
5% max. 1
2
3
4
5
8484 Precast Wall products
Head ring
Adjustablehoistforbalancing
Openingpulleys
1
3
3
Pulley-slingassemblyOpeningpulleysBalancers
212
Turning kit for Thermal Precast Wall
Head ring
Sling with adjustable leg
1
2
Pulley-slingassemblyOpeningpulleys2
1
Turning kit for Precast Wall
ON SALEI N O U R S T O R E
ON SALEI N O U R S T O R E
85
Position PrecastWall“B”initslocation,nextto PrecastWall“A”.
Theflexibletie-barsinPrecastWall“B”slotin,asitdescends,betweentherigidtie-barsinthe PrecastWall“A”.
The connection between the 2 PrecastWalls ismade:alltheflexiblebarsinthePrecast Wall“B”haveslottedinbetweentherigidbars in PrecastWall“A”andarepositionedhorizontally,whichcanbecheckedatthejoint.
Tomaketheconnection,thestraightsteelbarmust be positioned between the loops in the tie-bar.
4.3 Installing Precast Wall with integrated steel tie-bars
Placethewallplumbinitslocation,positionit on the plastic shims and in line with the markings.B
A
B
B
A
A
Thetie-barsareintegratedintothePrecastWall(PrecastWall“B”)wallinthefactoryintheformofamodule,combinedwithaCSA(cut-shaped-assembled)basket.Thecharacteristicofthismodule,ofequivalentheighttothatoftheverticalconnection,isthatthehorizontalreinforcement(hairpin)canpivotandthereforeintegratewithoutanyconflictintothePrecastWallalreadyinplace(PrecastWall“A”)wheninstallingwallsedgetoedge.PrecastWall“A”hasabasket,withthesamespacing,opposite,which,oncethewallisinposition,enablesthehairpintobekepthorizontal.WhenPrecastWall“B”isputintoplace,thepartofthetie-barthatoverrunsPrecastWall“B”pivotsalongeachframeofPrecastWall“A”untilitrestsontheframeoppositeinPrecastWall“A”.
Afterconcreting,incorporatethesteelbarsatthetopofthewall.
1
2
3
4
5
6
7
Check the PrecastWalliscorrectlypositionedon the shims and in line with the markings (in particularasregardsthepositionofthejoints).
8686 Precast Wall products
Stabilise the wall with push-pull props and adjustuntilitisperfectlyplumb
Fillspaceswithfoamtapetoavoidlaitanceleakage
Advantages : – No need to procure, store and handle
steel rebars– No waste to be disposed of– No strenuous work involved – No time wasted
8
9
Bird’s eye view of the tie-bars integrated in a CL wall
87
Inthiscase,thecustomermustensurethat,basedontheinformationavailableintheinstallationplan,ithasprocuredenoughoftherighttypeofsteeltie-barsfromitsrebarsupplier.
The tie-bars are inserted as the installation progresses.
The principles that apply to tying Precast Wall together are given below. This applies to verticalconnectionsbetweenPrecastWalls.OtherroutineexamplesareavailableinthetechnicalnoticesforPrecastWallorThermalPrecastWalls.
4.4 Installing Precast Wall/Thermal Precast Wall without integrated steel tie-bars
Put the steel tie-bars in place (asyougoalong)
Placethewallplumbinitslocation,positionitontheplasticshims and in line with the markings.
Stabilise the wall with push-pull props and adjust until it is perfectlyplumb
Fillspaceswithfoamtapetoavoidlaitanceleakage
1
2
3
4
5
Putanystraightsteelbarsinplace
8888 Precast Wall products
Simple articulated connection
Splice link
Straight :
Straight :
Corner :
Corner :
Inthiscase,thereinforcementcouldbeputinplaceafterthePrecastWallareplaced.
Embedded link
Straight : Corner :
Steel tie-bars
2HA10 to be integrated in situ
Folded welded mesh
Straight steel bars to be integrated in situ
TYPE 3 steel tie-bar
Opening to facilitate sliding at the bottom
of the wall 20x20
6 straight steel bars to be integrated in situ
Straight steel bars to be integrated in situ
Frames to be integrated in situ HAXX e = XX cm
Steel tie-bar
Opening to facilitate sliding at the bottom of the wall 20x20
Straight steel bars to be integrated in situ
Straight steel bars to be integrated in situ
89
4.5 Particularity concerning the installation of Thermal Precast Wall
WheninstallingThermalPrecastWalloneabovetheother,itisnecessarytoplaceashimontheouterskin.
Itisnecessarytomakesuretheouterskinisheldbyanotherdeviceoncetheslingsareremovedfromthewall,incasethetiesareinsufficient.Wherenecessary,theouterskinmustrestonastrongsupportusingshimsthatarerigidenoughtoresist compression
Theshimmingwillbedoneeitheronastrongsupport(provisionalorastructuralelement)orontheouterskinofthePrecastWallbelow,whichisitselfrestingonastrongsupport,withshims.
These shimsmaybewedge-shaped,with a height corresponding to the joint dimensioned. Itwillalso be possible to use shims that are not wedge-shaped with a height corresponding to the joint dimensionedminusthemanufacturingandinstallationtolerances,couplewithanexpandingseal.
TheshimscanberemovedoncethecoreinfillconcreteinthetopPrecastWall has set.The shims must removedstartingwiththehighesthorizontaljointsandworkingdowntothelowest.
9090 Precast Wall products
Fixingontheground:differenttypesofstabilisationonthegroundarepossible.Anyspecifictypeofshoringenvisagedshouldbevalidatedbyourengineeringdesignoffice.
FEHRrecommendfixingthetoppartofthepush-pullpropsontothePrecastWallbeforeinstallingit.
4.6 Method of anchoring and type of shoring
30°
30°
30°F
F
F
Solid slab, flaggingBallastFoundation
Thepush-pullpropswillbechosenaccordingtothedimensionsofthePrecastWall.
ThefixingsusedareM16s.ThenumberandlocationofthepropswillbedecidedbyFEHR’sengineeringdesignofficeandwill indicated on the installation plan.Thefixingsarenormallyplacedontheinnerskin,butcanbeplacedontheouterskindependingonthespecificrequirementsoftheproject.
Bydefault,thesizeoffixingsusedisadequateforawindspeedof85km/h.Inwindsabove85km/h,theworkareaaroundPrecastWallnotcross-bracedbythestructureshouldbeevacuated.
Shims Shims Shims
91
Wallssubjecttosevereloadsduringtheinterim phase require serious stabilisation at the top and bottom.
Ifnecessary:
• Seal in the anchors when casting the foundations
• Stabilise the PrecastWallbyaddinghorizontalpropsatthebottomofthewallto ensure : –itsplumbness–itsstability
1 Horizontalprops
2 Concrete block(orfoundation)
12
The props should only be removed when the wall’s stability is effective in accordance with the recommendations of the structural design office or engineering office.
9292 Precast Wall products
4.7 Infilling with concrete
Ensure thatall theworkplanned tobedonebyother tradesbeforeinfillinghasbeendone(inparticulartheelectricianfortheinstallationofducting,blocks,etc.).
Checkthesafetyequipmentisinplace.
HydratetheinsideofthePrecastWalltoimprovetheflowoftheconcreteduringinfillingandachievebetteradherencetothe sides.
Concretethewallsfromthegroundusingtheconcretingkit,orfromtheworkplatform,makingsuretorespecttheconcretingrateandthemax.fee-falldistanceindicatedonthe installation plan.
Completethesafetyinstallationsatthetopofthewall.
Installtheprecastslaborplacetheformworkfortheslab.
PlacethehorizontalPrecastWalltie-barsforthenextlevelorthe wall ties.
Concretetherestofthewallfromtheprecastslab.
–Thicknessofcoreinfilltobepouredinsitu< or = 9 cm : BPS - NF EN 206/CN - XF1 C25/30* - Dmax 12.5
Recommended consistency target value 200 mm to 220 mm
–Thicknessofcoreinfilltobepouredinsitu> 9 cm : BPS - NF EN 206/CN - XF1 C25/30* - Dmax 16
Recommended consistency target value 200 mm to 220 mm
ConcretingfromtheAMPworkplatform
Concretingfromtheground
What type of concrete to order?
Remark:TheinfillconcretemustmeettherequirementsofstandardNFEN206/CNandthespecificationsoftheprojectinquestion.*Thestrengthclassisthatrequiredbythestructuraldesignoffice
and will be at least equivalent to C25/30.
1
2
3
5
4
6
7
8
The concreting is done without vibration (except if there is a high density of reinforcements)
Itisrecommendedthatconsistencyoftheconcretebecheckedbydoingaslumpconetest;itisalsorecommendedthatyoucheckbeforeconcretingthatallthesteeltie-barsandextrasteelreinforcementsarepresent,thatthecaulkingofthejointsbetweenwallshasbeendoneandthattheformworkisinplaceatanyopenings.
9
93
•Theconcretingratespecifiedontheinstallationplanmustberespectedtoavoidthewallburstingapart (foranexternaltemperatureof+15°Candabove)-(bydefault70cm/hour).
•Theconcretingratemustbereducedby20%ifthetemperatureoftheskinsisbelow10°Candby30%forskinstemperaturesbelow5°C.
•Theconcretingratecanbeoptimised,aslongasasettingacceleratorisusedintheconcretepouredin situ. (Formoredetails,seethetechnicalnotice).
•Specialcase:Precastslabscanbeinstalledonnon-infilledwallsaslongastheslabissupportedbyshoring towers (FEHR’sengineeringdesignofficemustbeconsultedinadvance).
• Concretingjoints:concretingisstoppedatleast200mmbelowthetopsurface,adistancethatmustbecompatiblewiththecoveringofanyreinforcements:
Concrete joint in the case ofaslab.
ConcretejointinthecaseofaPrecastWallplacedoneontopofthe other
Itisrecommendedthatyouanticipatetheverticaljointsealsby ordering a metal profile (e.g. Nerlat) - available as anoptionalextra-whichcanbeintegratedintothePrecastWallinthefactory.
The contractor must ensure that the concrete in one pass has set before starting the next pass. Particular attention must be paid to ensure the first pass has set.
9494 Precast Wall products
Height of concrete chute :
For heights > 3.00 m the infill must be done :
1 Byintroducingaflexibletube(where the space between thetwoskinsallowsit)
2 Through one or more openings whilst respecting the same free-falldistance.
Concreting from above :Several solutions are possible :
–iftheconcretingheightis≤4m,aspecialindividualworkplatformforwallswithintegratedformwork(AMPplatformavailablefromtheFEHRstore)canbeused,orportablescaffolding,
–iftheconcretingheightis>4m,thebestsolutionisanaerialworkplatform.
Concreting from the ground :Theupperfloor,forexampleaprecastslab,canbeusedtoconcretefromaslongassuitableprotectionisplacedalongtheedgesfirst.Theshoringoftheprecastslabsmustthenbeadaptedtoconcretepouringoperations(potentialexcessload).
WhenthePrecastWallistobefilledusingachute,thecontractormustensurethatthechuteisofasuitablediameter,inparticularwhenthegapbetweenthe2skinsisnotverywide.
Flexibletube
3.80mmax.
Concreting opening
3.80mmax.
95
4.8 Treatment of joints
ThejointsaretreatedduringthefinishingphaseofthebuildingstructurebeforethefinishingtradesbeginworkonthePrecastWall.Toaccessthehighjoints,useofperipheralscaffoldingoranaerialworkplatformisrecommended.
4.8.1 Precast Wall
STA
ND
ARD
SU
PERS
TRU
CTU
RE W
ALL
SEC
TIO
N
Steel tie-bar
Facade walls with paint, lasure, untreated or marked joints
Facade walls with hydraulic render
Facade walls with waterproof render
Foam backing rod
Elastic sealant, class SNJF25 E
Filling with mortar
ScrimHydraulic render
Waterproof render
Shrinkage compensating hydraulic mortar
Inner surface
INN
ER S
URF
ACE
OU
TER
SURF
ACE
Steel tie-bar
Steel tie-bar
Steel tie-bar
Foam backing rod
Foam backing rod
Foam backing rod
Filling with mortarScrim
Elastic sealant, class SNJF25 E
Seal
Seal
Seal
Seal
9696 Precast Wall products
Seal Steel tie-bar
Impregnated foam sealant rod
Foam backing rod
Accessible skin
Non-accessible skin (non-service location)
Self-adhesive bitumen tapeFilling with repair
mortar
Inner surface
Shrinkage compensating hydraulic mortar
OU
TER
SURF
ACE
AG
AIN
ST E
ART
H
STA
ND
ARD
INFR
AST
RUCT
URE
WA
LL S
ECTI
ON
INN
ER S
URF
ACE
Steel tie-bar
Steel tie-bar
Foam backing rod
Seal
Seal
97
acier de liaison
3 cm
Cordon de moussefond de joint
Mastic élastique de classement SNJF F 25 E,apte à résister aux pressionshydrostatiques
acier de liaisonjoint
joint
3 cm
Cordon d’étanchéité de mousse imprégnée
joint acier de liaison
3 cm
Cordon de moussefond de joint
Mastic élastique de classement SNJF F 25 E,apte à résister aux pressions hydrostatiques et au contact de solutions agressives
Surface in contact with the earth
Steel tie-bar
Impregnated foam sealant rod
Foam backing rod
Elastic sealant, SNJF F 25 E, able to resist
hydrostatic pressure
Elastic sealant, SNJF F 25 E, able to resist hydrostatic
pressure and contact with aggressive solutions
Water pressure
Skin in contact with an aggressive environmentWA
LL S
UBJ
ECT
TO H
YDRO
STAT
IC P
RESS
URE OU
TER
SURF
ACE
INN
ER S
URF
ACE
(res
ervo
ir)
Foam backing rod
Steel tie-bar
Steel tie-bar
Seal
Seal
Seal
9898 Precast Wall products
Treatment of horizontal joints on foundations
•Toensurecorrectuseofeachproduct,seethemanufacturer’sinstructions.•Sealantusedbetweenpanelsmustbeappliedtosurfacesfreeofdust,thatarenotwetandwhichhavebeentreated,ifnecessary,withaprimerrecommendedbythesealantsupplier.(min.depthofsealant:2cm)
•Sealantsonoutersurfaceswillneedredoingevery10to15years.
Backer rodSealant such as Sikaflex Construction
Accessible skin
Foundation or raft
Balcony
BALC
ON
IES
OU
TER
SURF
ACE
AG
AIN
ST E
ART
H
Accessible skin
Standard balcony jointSTA
ND
ARD
INFR
AST
RUCT
URE
WA
LL S
ECTI
ON
NB : Expanding backer rod only plays a role during the interim phase. It is not indispensable to guarantee a good seal to the joint in the final phase.
Backer rod
Backer rod
Foundation or raft
Sealant such as Sikaflex Construction
99
4.8.2 Precast WallTreatment of joints - Façade wall with paint, lasure, untreated or marked joints
•Toensurecorrectuseofeachproduct,seethemanufacturer’sinstructions.•Sealantusedbetweenpanelsmustbeappliedtosurfacesfreeofdust,thatarenotwetandwhichhavebeentreated,ifnecessary,withaprimerrecommendedbythesealantsupplier.(min.depthofsealant:2cm)
•Sealantsonoutersurfaceswillneedredoingevery10to15years.
Expanding backer rod
STA
ND
ARD
SU
PERS
TRU
CTU
RE W
ALL
SEC
TIO
NST
AN
DA
RD IN
FRA
STRU
CTU
RE W
ALL
SEC
TIO
N
Void or space filled with insulating foam or a compressible insulating joint strip
Expanding seal Insulation
Steel tie-bars
SealFlexible sealant such as KATAROC PREDALLES
Category 1 sealant, such as SIKAFLEX CONSTRUCTION
Single-component mortar such as SIKA MONOTOP 612
Self-adhesive waterproofing strip such as SIKA Multiseal
Outer surface
Inner surface
Inner surface
Insulation
Steel tie-bars
Expanding backer rod
Expanding backer rod
Expanding backer rod
SealFlexible sealant such as KATAROC PREDALLES
Expanding seal
Void or space filled with insulating foam or a compressible insulating joint strip
Seal
Seal
100100 Precast Wall products
Joint intersections
• General view
•Close-upofthejointintersection
Seals
Opening to evacuate moisture
Flashing glued at the joint intersection
WA
LL 2
WA
LL 1
WA
LL 4
WA
LL 3
Glued-onflashing Expandingseal
EXTERIORINTERIOR
WALL 2
WALL 4
WALL 4
WALL 3
Flashing glued at the intersectionoftheverticalandhorizontaljoints
Expandingseal
101
ThePrecastWallconceptisperfectlysuitedtotheuseofworkplatforms,guardrailsandperipheralscaffolding.
Forperipheralorbracketpouringplatforms,onrequestFEHR’sdesignofficecanplanthelayoutofthePVCsleevestobeinsertedintothePrecastWallinthefactory.
Thefastenerswillbefixedintheconventionalway,usingplatesandsuitablebolts.
Theconcreteinfillingofthewallsmustalreadyhavebeendone.
•Foraheightlessthan4.00m:accessthewallusingandindividualplatform: AMP (availablein2heights)–availablefromtheFEHRstore
•Foraheightover4.00m,werecommendusinganarticulatedaerialworkplatform
•Itisalsopossibletousestandardconstructionsiteequipmentsuchasabracketplatformwhichwillbefixed1mfromthetopofthewall(wallpocketstobespecifiedwhenorderingthewalls– Precast Wall only).
•Scaffolding
5. Safety features
102102 Precast Wall products
ThePrecastWallsolutionallowstheuseofsharedusebuilt-upscaffolding: werecommendusing“MDS”-typesafetyscaffolding
Thisscaffoldingwillbeusedbyallthetrades needing to work at height and will serve :
–asprotectionagainsttheriskoffallingfromaheight,
–asanergonomicworkstation,
throughoutthedurationoftheconstructionsite(buildingshell,roofstructure,joints,painting,installation,ofwindows,etc.)
This scaffolding will need to be designed at the same time as the construction project
Thisscaffoldingmustbeinstalledbyaspecialistcontractororqualifiedpersonnel,asrequiredbyArticleR4323-69oftheFrenchLabourCode.
Sharedusescaffolding:
–providesoptimumworkingconditions:continuityofcollectiveprotectionagainstagainsttheriskoffallingfromaheightandfallingobjects,
–allowssuccessiveand/orsimultaneousworkingbythecontractors,
–securesaccesstothefacades,
–renderstheworklessarduous,
–improvesergonomics,
–reducesthenumberofoperations (transport,assembly,disassembly,etc.)
5.1 Shared use built-up scaffolding
ThePrecastWall systemallows the installation ofscaffolding
1 level in advance
1 2
Safeinstallationofprecastslabsandpouringof1stfloorslab
3
Safeerectionofthe2ndlevelofwallfromtheprecastslab
Safeerectionofthe2ndlevelshoring towers and complete scaffolding
4
Safeinstallationofshoringtowersand the 1stlevelofscaffoldingaftererectionofthe1stlevel
103
5.2 Guard rails integrated into Precast walls
Theintegratedguardrailprotectsagainstfallsfromaheight.This solution does not require theremovaloftheguardrailsatanytimeduringtheinstallationworkphases: idealconstructionsitesafety!
Description :
Standard guard rail (GCS)(1.95 m wide – 1.10 m high) galvanised steel. Weight approx. 25 kg. The toeboard overruns by 10 cm to ensure continuity of protection at the bottom.
Adjustable guard rail (GCR)(1.20 m to 1.90 m wide – 1.10 m high) consisting of a fixed central part and 2 sliding side parts. Can be adjusted from 1.20 m to 1.90 m with intervals of 5 cm. The side parts must be extended by the same amount on either side to ensure overall balance when handling with the poles. The GCR weighs approx. 37 kg. It locks with pins on the middle rail.
2 types of guard rails are available :
Plate screwed onto an insert embedded in the PrecastWall skin
Guardrail(fixedoradjustable),fixedontotheplateontheconstruction site
The guard rail comes in two versions:fixedoradjustable,bothofwhichsloteasilyintotheplatepre-embeddedinthePrecastWallinthefactory.
FEHR fastening plate
Fixed guard rail
Adjustable guard rail
Guard rails can be hired directly from the FEHR store.
(preferred solution for Precast Wall)
104104 Precast Wall products
Advantages :
• optimum safety
• no tools required : simply slots in
• installed quickly
• openings in the slab (e.g. for stairs or lifts) are protected
• protection against falls from a height around the edge of the building during all the work :– installation of precast slabs– concreting of precast slabs– installation of next level of Precast
Walls
The use of FEHR guard rails must be planned for in the design
of the construction.
105
Installation
Place the guard rails with a crane
The guard rail simply slots into the fastening plate
Sling the Precast Wall and take it out of the container
ArrivalofthePrecastWallontheconstructionsite,pre-equippedwithfasteningplates
Slots simply and quickly into the fastening plate
106106 Precast Wall products
Using the crane, lift the guard rails using the pole
Fit directly onto the next Precast Wall to be installed
Installing the first level
Install the next level
Fill in the holes where the plates were fixed at the same time as the joints.
107
5.3 FEHR fastening plate + mixed adapter + traditional construction site guard rails
MixedadapterscanbeslottedintotheFEHRfasteningplates(screwed into an insertembeddedinthePrecastWallskin)
Theseadaptersallowyoutoinstalltraditionalconstructionsiteguardrailson the FEHRfasteningplatesandtobenefitfromassemblyoftheguardrailsoutside the work areas.
Themixedadapter isspeciallydesignedtoreceiveØ40orØ25postsonthesame device.
Mixedadapter
FEHRfasteningplate
(preferred solution for Precast Wall)
108108 Precast Wall products
5.4 AMP work platform(mobileaccessforPrecastWall)
Technical characteristics
• Material : aluminium•Workplatform:55cmwide•Easilytransportable•Suitableforuseonunevenground
ThemobileaccessforPrecastWall (AMP)enablesyoutoaccessPrecastWallsintotalsafetytoinsertsteeltie-barsortopourtheconcreteinfill.
Totalperipheralprotectiontotaloftheuserthankstotheintegratedguardrail,FreedomofmovementAttaches inside the wall
2. ExtrahighAMP:4.39m1. Standard AMP: 3.67 m
ON SALEI N O U R S T O R E
Prefabrication plants Concrete mixing plants (East France)
FRANCE62, route de Strasbourg - BP 46F-67242 BISCHWILLER CEDEX Tel. +33 (0)3 88 06 27 90 Fax +33 (0)3 88 06 27 91
LauterbourgRoute de Mothern67630 Lauterbourg
Bischwiller62 Route de Strasbourg67240 Bischwiller
GundershoffenRoute de Gumbrechtshoffen67110 Gundershoffen
EschauRoute du Rhin67114 Eschau
Hochfelden8 quai du Canal67270 Hochfelden
Moyeuvre GrandeZI du Barrage de Beth 57250 Moyeuvre Grande
Schweighouse/ModerZI La Sablière 67270 Schweighouse/Moder
Pompey 102 Boulevard de la Moselle54340 Pompey
OberschaeffolsheimChemin du Hitzthal67203 Oberschaeffolsheim
GERMANYGmbH & Co. KGTriebstraße 34D-68753 WAGHÄUSEL - WIESENTALTel. +49 7254 209 0Fax +49 7254 209 100
GERMANY UHPCFranz-John Strasse 13/1D-77855 ACHERNTel. +49 7841 6812 904
FRANCE1, chemin du portF-77670 VERNOU LA CELLE SUR SEINETel. +33 (0)1 60 39 61 70Fax +33 (0)1 60 39 61 81
FRANCE345 Chemin des TeppesF-26300 CHATEAUNEUF SUR ISERETel. +33 (0)4 75 25 98 80Fax +33 (0)4 75 25 98 81
Service commercialTel. 0825 800 818
Service commercialTel.+33(0)3 88 80 94 70
Fehr Groupe SAS (head office)ZA Emile Mathis - 21 route de Froeschwiller - F-67110 REICHSHOFFEN
Tel. +33 (0)3 88 80 86 30 - Fax +33 (0)3 88 80 34 52
FEHR
GRO
UPE
S.A.
S à
Dire
ctoi
re e
t C.S
. au
capi
tal d
e 10
000
000
€ R
.C. S
trasb
ourg
73
B 21
1 - S
iret 7
38 5
02 1
11 0
0029