current innovations & developments - cbdg · current innovations & developments richard...
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![Page 1: Current Innovations & Developments - CBDG · Current Innovations & Developments Richard Howells Market Development Manager Celsa Steel UK. Contents ... EN1992-1-1 (Eurocode 2)](https://reader031.vdocuments.net/reader031/viewer/2022022020/5b9dba8809d3f2443d8cb741/html5/thumbnails/1.jpg)
The UK Reinforcing Industry:The UK Reinforcing Industry:Current Innovations & DevelopmentsCurrent Innovations & Developments
Richard HowellsRichard HowellsMarket Development ManagerMarket Development ManagerCelsa Steel UKCelsa Steel UK
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ContentsContentsCelsa Steel UK Celsa Steel UK –– A Brief IntroductionA Brief IntroductionGrade 500C ReinforcementGrade 500C Reinforcement
Changes to StandardsChanges to StandardsDuctilityDuctility
Modular ConstructionModular ConstructionWhat is it?What is it?Case study Case study –– Airbus, BristolAirbus, BristolApplication to Bridge DesignApplication to Bridge Design
EcoEco--ReinforcementReinforcement
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Celsa Steel UKCelsa Steel UKAn introductionAn introduction
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Celsa Group companyCelsa Group companyLargest producer of reinforcing steel in EuropeLargest producer of reinforcing steel in EuropeCelsa Steel UK Celsa Steel UK -- employs over 550 Peopleemploys over 550 PeopleProduces:Produces:
Is the largest UK mill producing reinforcing bars and Is the largest UK mill producing reinforcing bars and coils, supplying the UK market with more than 60% of coils, supplying the UK market with more than 60% of itit’’s reinforcing requirementss reinforcing requirements
Celsa Steel UKCelsa Steel UK
Tpy Products
700,000 Rebar300,000 Merchant bar200,000 Wire rod
1,200,000 Total
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Grade 500C ReinforcementGrade 500C Reinforcement
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EN1992EN1992--11--1 (1 (EurocodeEurocode 2)2)Code is valid for specified yield strengths in the range 400 Code is valid for specified yield strengths in the range 400 –– 600 600 N/mmN/mm2 2
Code is valid for ribbed bars only Code is valid for ribbed bars only Adequate ductility is requiredAdequate ductility is requiredSeismicSeismic
BS4449:2005BS4449:2005Updated in line with EN10080:Updated in line with EN10080:Previously:Previously:
Grade 460Grade 4602 ductility classes: A and B2 ductility classes: A and B
Introduction of European StandardsIntroduction of European Standards
Now:Now:Grade 500Grade 5003 ductility classes: A, B and C3 ductility classes: A, B and C
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In the UK, we have 3 grades of reinforcing steel:In the UK, we have 3 grades of reinforcing steel:
The main difference is the ductilityThe main difference is the ductility……
≥≥ 7.5%7.5%≥≥ 1.15 1.15 < 1.35< 1.35B500CB500C
≥≥ 5.0%5.0%≥≥ 1.081.08B500BB500B
≥≥ 2.5%2.5%≥≥ 1.051.05B500AB500A
AAgtgt((ffss / / ffyy))GradeGrade
(fs / fy) = Ultimate Tensile Strength /Yield Strength
Agt = Elongation and maximum load
BS4449:2005BS4449:2005
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Highest quality reinforcing steel specified in EC2Highest quality reinforcing steel specified in EC2
50% more ductile than standard grade B50% more ductile than standard grade B
Exactly the same as other grades of reinforcement, Exactly the same as other grades of reinforcement, other than its rib pattern and its ductilityother than its rib pattern and its ductility
Only grade of reinforcement produced in Spain and Only grade of reinforcement produced in Spain and Portugal and is also being produced and used in many Portugal and is also being produced and used in many other countries around Europeother countries around Europe
Grade 500C ReinforcementGrade 500C Reinforcement
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Tensile strength:Tensile strength:Minimum yield stress (Minimum yield stress (ffyy) of 500 N/mm) of 500 N/mm22
Minimum Ultimate Tensile Strength (Minimum Ultimate Tensile Strength (ffss) of 575 N/mm) of 575 N/mm22
Fatigue performanceFatigue performance5 Million cycles under BS4449 fatigue conditions5 Million cycles under BS4449 fatigue conditions
Bond performanceBond performanceTo meet requirements of EN10080To meet requirements of EN10080
DuctilityDuctilityClass CClass C
Elongation under Max Load (AElongation under Max Load (Agtgt) ) ≥≥ 7.5%7.5%
Ratio Ratio ffss/f/fyy ≥≥ 1.151.15
Grade 500C Steel PropertiesGrade 500C Steel Properties
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Design ApplicationsDesign ApplicationsAA
Moment redistribution < 20%Moment redistribution < 20%No plastic analysisNo plastic analysis
BBMoment redistribution < 30%Moment redistribution < 30%Plastic analysisPlastic analysis
CCAs B, but is also suitable for Seismic conditionsAs B, but is also suitable for Seismic conditions
DuctilityDuctility
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Ductility is the extent to Ductility is the extent to which a bar will deform which a bar will deform and extend past itand extend past it’’s yield s yield point before fracturepoint before fracture
DuctilityDuctility
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Overload Conditions:Overload Conditions:ExplosionExplosion
CollisionCollision
Excess floor loadsExcess floor loads
FloodingFlooding
Seismic activitySeismic activity
Foundation movementFoundation movement
Increased ductility allows longer deformation before Increased ductility allows longer deformation before failurefailure
Advantages Advantages -- SafetySafety
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Modular Construction:Modular Construction:Adding value through developments Adding value through developments
in reinforcement supply to sitein reinforcement supply to site
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Beam CagesBeam Cages
Tunnel SegmentsTunnel Segments
Pile CagesPile Cages
Reinforcement innovationReinforcement innovation
Standard preStandard pre--fabricated cagesfabricated cagesDifferent types of matsDifferent types of matsModular constructionModular construction
Carpet ReinforcementCarpet Reinforcement
Special MatsSpecial Mats
Bent Special MatsBent Special Mats
Typical Modular ElementTypical Modular Element
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Modular ConstructionModular ConstructionFabricator involvement at the design stageFabricator involvement at the design stage
2 situations:2 situations:Early involvement: e.g. designer provides design intent Early involvement: e.g. designer provides design intent –– fabricator fabricator engineers & detailsengineers & details
Later involvement: e.g. designer provides GA drawings & Later involvement: e.g. designer provides GA drawings & schedules schedules –– fabricator refabricator re--engineers/reengineers/re--detailsdetails
3D design detailing/modelling (Building Information Model 3D design detailing/modelling (Building Information Model –– BIM)BIM)
OffOff--site fabricationsite fabrication
Applicable to the whole project, or individual elements onlyApplicable to the whole project, or individual elements only
Why?Why?
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Why use Modular Construction?Why use Modular Construction?
To be more economical onTo be more economical on--sitesite
Fabricator engineers & details in order to optimise design Fabricator engineers & details in order to optimise design for management, project, site or material savings:for management, project, site or material savings:
Construction speedConstruction speed
Minimum transport of materialMinimum transport of material
CraneageCraneage
Health & SafetyHealth & Safety
Material savings i.e. reduction of lapsMaterial savings i.e. reduction of laps
Labour reductionLabour reduction
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3D Modelling3D Modelling2.8m Deep Raft Slab2.8m Deep Raft Slab9 Layers H50 Bottom 9 Layers H50 Bottom ReinforcementReinforcement2 Layers H40 Top 2 Layers H40 Top ReinforcementReinforcementPrefabricated Prefabricated Extendable Support Extendable Support CagesCagesWalerWaler ReinforcementReinforcement3m Deep Drainage 3m Deep Drainage SumpSumpColumn StartersColumn StartersMacalloyMacalloy BarsBarsWall StartersWall StartersCoupled Stop EndsCoupled Stop EndsShear Key Slab Shear Key Slab ConnectionConnection
Building Information Model (BIM) for Building Information Model (BIM) for LeadenhallLeadenhall ProjectProjectBasement Slab (Level 3, Pour 8)Basement Slab (Level 3, Pour 8)
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Case Study Case Study -- AirbusAirbusAirbus Building 07D, Airbus Building 07D, FiltonFilton, Bristol, Bristol
25 x 15 metre reinforced ground slab for Airbus wing 25 x 15 metre reinforced ground slab for Airbus wing testing facilitytesting facility
Originally 94 Tonnes of reinforcement detailed by Atkins, Originally 94 Tonnes of reinforcement detailed by Atkins, Bristol to suit short lengths for manhandling Bristol to suit short lengths for manhandling –– all in loose all in loose barbar
Number of fixers: 6Number of fixers: 6
Estimated time to slab completion: 10 daysEstimated time to slab completion: 10 days
Main constraint: costsMain constraint: costs
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Airbus Building 07D, Airbus Building 07D, FiltonFilton, Bristol, Bristol100% re100% re--detailed by Express Reinforcements into detailed by Express Reinforcements into RollmatRollmat & prefabricated cages & prefabricated cages
Minimise double handling & Minimise double handling & craneagecraneage –– material placed material placed on delivery for immediate useon delivery for immediate use
Final tonnage Final tonnage –– 83 Tonnes (15% reduction in steel 83 Tonnes (15% reduction in steel costs)costs)
Placed by 6 men in 1 day (9 day program saving)Placed by 6 men in 1 day (9 day program saving)
Only 0.6 Tonne loose bar Only 0.6 Tonne loose bar –– H&S benefitsH&S benefits
Associated costs also need consideringAssociated costs also need considering
Case Study Case Study -- AirbusAirbus
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – B1
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Prefab – B2/T2 Support Cage
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Rollmat – T1
Modex Modex –– Slab ConstructionSlab Construction
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Slab complete
Modex Modex –– Slab ConstructionSlab Construction
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Can be applied to small or large projectsCan be applied to small or large projects
Other examples include T5, CTRL, Other examples include T5, CTRL, SladenSladen Valley Valley Wastewater Works, Highbury Stadium Redevelopment, Wastewater Works, Highbury Stadium Redevelopment, NovotelNovotel PaddingtonPaddington……....
Modular ConstructionModular Construction
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Can Modular Construction be applied Can Modular Construction be applied to Concrete Bridge Design?to Concrete Bridge Design?
A challenge to industryA challenge to industry……
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Concrete BridgesConcrete BridgesIntricate and wide rangingIntricate and wide rangingTraditional approach preferredTraditional approach preferredProject specific i.e. skew, horizontal/vertical alignmentProject specific i.e. skew, horizontal/vertical alignmentWhere can modular construction benefit?Where can modular construction benefit?
Highly dependent on structure type!Highly dependent on structure type!Some initial thoughtsSome initial thoughts……....
SubstructureSubstructure
PilesPiles
Pile CapsPile Caps
SuperstructureSuperstructure
Abutments/PiersAbutments/Piers
DeckDeck
ParapetsParapets
Approach slabsApproach slabs
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Concrete BridgesConcrete Bridges
Speed of constructionSpeed of constructionStandard loose bar fixing rates: 1.3 tonnes/man/hourStandard loose bar fixing rates: 1.3 tonnes/man/hour
Modular cage fixing rates: up to 5 tonnes/man/hourModular cage fixing rates: up to 5 tonnes/man/hour
Health and SafetyHealth and SafetyLarge structures i.e. big pile capsLarge structures i.e. big pile caps
Reduces time spent working at depthReduces time spent working at depth
Continuity of steelContinuity of steelA prefabricated rather than precast approach allows lappingA prefabricated rather than precast approach allows lapping
MaintenanceMaintenance3D modelling provides an electronic blueprint for the location o3D modelling provides an electronic blueprint for the location of f reinforcing steelreinforcing steel
Avoid clashes when undertaking future maintenanceAvoid clashes when undertaking future maintenance
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EcoEco--Reinforcement:Reinforcement:Developments in Sustainability Developments in Sustainability
& Responsible Sourcing& Responsible Sourcing
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The UK Reinforcing IndustryThe UK Reinforcing Industry
More than 95% rebar used in UK More than 95% rebar used in UK produced via EAFproduced via EAF
Raw material is 99% Scrap Raw material is 99% Scrap ––recycling processrecycling process
1/3 embodied energy and 1/6 CO2 1/3 embodied energy and 1/6 CO2 emissions of traditional steelmaking emissions of traditional steelmaking processesprocesses
Scrap Scrap -- Locally sourcedLocally sourced
Fabricators Fabricators –– low delivery distanceslow delivery distances
Traceability through ISO 9001 Traceability through ISO 9001 ––CaresCares
The Raw MaterialCycle
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BRE Sustainability StandardBRE Sustainability Standard
BES 6001:2008 BES 6001:2008 –– Standard for the Responsible Sourcing of Standard for the Responsible Sourcing of Construction ProductsConstruction Products
Wide scopeWide scope
Certification for companies, products and production processesCertification for companies, products and production processes
EcoEco--Reinforcement Reinforcement is the sector standard and certification scheme is the sector standard and certification scheme for responsibly sourced reinforcing steel to BES 6001for responsibly sourced reinforcing steel to BES 6001
Developed with relevant industry stakeholders:Developed with relevant industry stakeholders:
Arup, Skanska, Arup, Skanska, BovisBovis, LO, LO’’R, R, WilmottWilmott Dixon, ODA, CLG, Dixon, ODA, CLG, BREEAM, CEEQUAL, ICE, BAR, TCC, BREBREEAM, CEEQUAL, ICE, BAR, TCC, BRE
Mills and fabricators equating to 70 Mills and fabricators equating to 70 –– 80% of UK market supply80% of UK market supply
Open to all steel reinforcement producers providing they are Open to all steel reinforcement producers providing they are committed to addressing sustainable issuescommitted to addressing sustainable issues
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Clients/contractors will know that their material is responsibleClients/contractors will know that their material is responsiblesourcedsourced
Pick up a label from any EcoPick up a label from any Eco--Reinforcement product on any site and Reinforcement product on any site and see how far that steel has travelled and the transport COsee how far that steel has travelled and the transport CO22 emissions emissions from raw material to site (Celsa Group initiative)from raw material to site (Celsa Group initiative)
Tick several boxes on sustainable sourcing questionnaires from Tick several boxes on sustainable sourcing questionnaires from clientsclients
BRE involvement will:BRE involvement will:
allow designers to pick up additional BREEAM points by allow designers to pick up additional BREEAM points by specifying itspecifying it
Feed directly into the code for sustainable homes and the Feed directly into the code for sustainable homes and the forthcoming code for sustainable buildingsforthcoming code for sustainable buildings
Reinforced concrete as a construction material can be completelyReinforced concrete as a construction material can be completelylocally sourcedlocally sourced
BenefitsBenefits
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Introduction of EC2 allows designers to benefit Introduction of EC2 allows designers to benefit from higher ductility reinforcing steelfrom higher ductility reinforcing steelThe application of innovation and development The application of innovation and development to the supply of reinforcement to site can also to the supply of reinforcement to site can also bring tangible cost/time benefits to construction bring tangible cost/time benefits to construction projectsprojectsOverall project savings can be largeOverall project savings can be largeCan the concrete bridge industry benefit?Can the concrete bridge industry benefit?EcoEco--Reinforcement certification begins to Reinforcement certification begins to demonstrate sustainability/responsible sourcing demonstrate sustainability/responsible sourcing requirementsrequirements
ConclusionsConclusions
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The UK Reinforcing Industry:The UK Reinforcing Industry:Current Innovations & DevelopmentsCurrent Innovations & Developments
Richard HowellsRichard HowellsMarket Development ManagerMarket Development ManagerCelsa Steel UKCelsa Steel UK