Institution of Civil Engineers Republic of Ireland Section : Implementation in Ireland by 2010 Introduction Jim Mansfield Liaison Engineer EN 1990 and EN 1991 Chairman Liaison Engineers Group
Institution of Civil Engineers Republic of Ireland Region : Implementation in Ireland by 2010 Introduction Jim Mansfield Liaison Engineer EN 1990 and EN 1991 Chairman Liaison Engineers Group
(CEN) Public Procurement Directive PPD (EU) EU Construction Products Directive CPD (EU)
Purpose of as set out by EU Commission Common design criteria for strength, fire, durability, economy Common understanding of design of structures for owners, users, designers, contractors and suppliers Exchange of construction services between Member States Facilitate use of components and kits in Member States Facilitate use of materials and products in Member States Common basis for research and development Common design for design aids and software Increase competitiveness of European construction industry worldwide
Europe CEN CENELEC - EOTA 28 member states within Europe Funded by European Union/EFTA Members Ireland NSAI UK BSI
Construction Products Directive Essential Requirements Interpretive Documents Mandates Technical Specifications European Harmonized Standards (hen s) European Technical Approvals (ETAs) + (ETAGs) Category A Design & Execution Category B Product Standard () Attestation of Conformity CE Marking
Construction Products Directive 89/106/EEC In place since 1989 Currently discussions are being held to replace it with Construction Products Regulations For agreement 2009 This will be applied by the Commission and will apply all over Europe CE marking will become mandatory 2011/2012 Will apply in Ireland so all should be aware May be some easing of rules for SMEs Department of Environment, Heritage and Local Government looking at this
Guidance Paper L Application and Use of (Construction Products Directive) Prove compliance of Building and Civil Engineering works with essential requirements of Construction Products Directive 1 Mechanical resistance and stability 2 Safety in case of fire 4 Safety in use As a basis for specifying contracts for construction works and related engineering services As a framework for drawing up Harmonized Technical Specifications for construction products (ENs and ETAs)
Product hens Must be consistency between specifications and 2 main types of properties (a) properties determined by testing e.g. Concrete steel etc. (b) properties determined by calculations e.g. Prefabricated elements or kits Allow appropriate levels and classes for national provisions and NDP s in the various Declare all values in information for CE marking and for use in structural design Products that have declared values to Eurocode calculation methods, following hens, and with CE marking must be allowed on the market and allowed to be used for the intended purpose in all member states.
should be referred to in hens - for products involving structural calculations - for products whose properties are determined by the - May utilise NDP s where applicable. - Express in terms of characteristic values with NDP s calculated by designer - or Design values if NDP s in country of use determined by manufacturer Provide all information necessary to use the product structurally Must comply with provisions including Production Control and Testing If are to be used to assess strength of a product. Then these must be used by manufacturers and accepted in all member states without additional tests
3 methods 1 2 3 Provide geometrical data and material performance characteristics generally off the shelf product Provide declared values for structural components & kits (relate to NDP s where necessary) based on Eurocode off the shelf and made to measure products Refer to Client drawings/documents made to measure products (responsibility by Designer) for specific project
CE Marking Will become mandatory. Currently not in Ireland, UK and Sweden All states must recognise and accept assessment of products States cannot impose additional requirements Important for Manufacturers to comply with hens and ETAs Important for Exporters and Importers to be fully aware of rules Designers must also be aware of specification rules Harmonized product standards to be available to avoid dumping of inferior products NSAI and Department of Environment, Heritage and Local Government looking at this area at the moment as discussed earlier Rules are changing for Ireland in respect of CE marking
CE Marking Declared values of product performance CE Mark not a Safety mark in itself Just that it has been tested in accordance with a technical specification Construction products are intermediary Manufacturer cannot envisage every end use These to be analysed by end user (designer, contractor, etc) to ensure fitness for use For particular application For conditions of use In compliance with Part D of the Buildings Regulations
Public Procurement Directive PPD Mandatory for all construction contracts greater than 5 million Also for design contracts over 130,000 etc. i.e. Road Bridges, Public Buildings
+ National Annexes will be mentioned specifically in Technical Guidance Documents Also in DMRB for Bridge Works NRA a party to the Bridge parts Prima facie method of compliance
Public Procurement Directive - Other rules acceptable if equivalent to - Use either Eurocode and NDPs or - Other performance specification clear to both designers and owner (possible use of National Codes) - This should be clearly specified in advance for a level playing field - Difficult to prove prima facie acceptance to Building Regulation etc.
LIST OF CODES EN 1990 EC0 Basis of Structural Design 1 parts EN 1991 ECI Actions on Structures 10 parts EN 1992 EC2 Design of Concrete Structures 4 parts EN 1993 EC3 Design of Steel Structures 20 parts EN 1994 EC4 Design of Composite Steel & Concrete Structures 3 parts EN 1995 EC5 Design of Timber Structures 3 parts EN 1996 EC6 Design of Masonry Structure 4 parts EN 1997 EC7 Geotechnical Design 2 parts EN 1998 EC8 Design of Structures for Earthquake Resistance 6 parts EN 1999 EC9 Design of Aluminium Structure 5 parts Total 58 parts
Relationship of Codes EN 1990 EN 1991 STRUCTURAL SAFETY SERVICEABILITY DURABILITY ACTIONS (LOADS) Material independant EN 1992 EN 1994 EN 1996 EN 1993 EN 1995 EN 1999 MATERIAL SPECIFIC DESIGN AND DETAILING EN 1997 EN 1998 GEOTECHNICAL AND SEISMIC DESIGN Material independant
Horizontal Co-ordination of Codes EN 1991 Parts 1.1 General EN 1992 Parts 1.2 Fire EN 1993 Parts 2 Bridges EN 1994 Parts 4 Silos and Tanks
1.5 Definitions For the structural Eurocode suite, attention is drawn to the following key definitions, which may be different from current national practices: Action means a load, or an imposed deformation (e.g. Temperature effects or settlement). Effects of Actions or Action effects are internal moments and forces, bending moments, shear forces and deformations caused by actions. Strength is a mechanical property of a material, in units of stress. Resistance is a mechanical property of a cross-section of a member, or in a member or structure. Execution covers all activities carried out for the physical completion of the work including procurement, the inspection and documentation thereof. The term covers work on site; it may also signify the fabrication of components off site and their subsequent erection on site.
Eurocode Typical Part Foreword: Background Status and Field of Application National Standards Links to Harmonized Technical Specification Additional Information National Annex Section 1: General Scope References Assumptions Principles Application Rules Definitions and Symbols
Other Sections (EN 1992-1-1 example) - Basis of Design - Materials - Durability - Analysis - Ultimate Limit States - Serviceability Limit States - Detailing - Precast - Lightweight Aggregates - Plain Structures - Annexes - Informative - Normative - National Annex
EN 1990 Basis of Structural Design CONTENTS Foreword 1. General Scope Assumptions Symbols etc 2. Requirements Basic, Reliability, Working Life, Durability, Quality 3. Principles of Limit State Design Design Situations 4. Basic Variables Actions, Materials, Geometry 5. Structural Analysis and Design assisted by Testing 6. Verification by the Partial Factor Method Design Values Ultimate Limit Slate Serviceability Limit Slate Annexes A1 - A2 - B - C - D - Application for Building Application for Bridges etc. Management of Structural Reliability for Construction Works Basis for Partial Factor Design and Reliability Analysis Design assisted by Testing National Annex
EN 1990 - Assumptions Choice of Structural System and Design of the structure made by appropriate qualified and experienced personnel Execution (Construction) by personnel with appropriate skills and experience Adequate supervision and quality control (in design offices, factories and on sites) Materials and products used as in EN 1990 EN 1999 and supporting material or product specifications Structure adequately maintained Structure used in accordance with Design Assumptions
Principles EN 1990 General Statement and Definitions (1.4 (2)) (No alternative) Requirement and Analytical Modes (No alternatives) Identified by letter P after paragraph number (1.4 (3))
Application Rules Generally Recognised Rules 1.4(4) which comply with the principles and satisfy their requirements Alternative rules may be used if (a) accord with principles (b) equivalent with regard to structural safety, serviceability and durability Identified by paragraph number without letter If alternative used then design may not be wholly in accordance with EN 1990, although in accordance with the priciples. IF EN 1990 is used in repect of a product standard, the alternative rule may not be acceptable for CE Marking.
Requirements A structure shall be designed and executed in such a way that it will, during its intended life, with appropriate degrees of reliability and in an economical way - sustain all actions and influences likely to occur during execution and use - remain fit for purpose for which it is required Structural resistance, serviceability and durability Adequate resistance to fire Robustness Requirements - Resistance to accidental action not disproportionate to original cause Suitable choice of materials, design, detailing and execution Due skill and care exercised based on generally available knowledge and good practice
Partial factor verification limit states Design resistance to be greater than design value of effects of actions Take into account material properties / geometrical properties Use section 6 and the relevant Annex A eg buildings bridges etc Equations 6.10, 6.10a and 6.10b are relevant for ultimate states with equations 6.11 for accidental and 6.12 for seismic and equations 6.13 to 6.16b for serviceability limits statesdepending on the load combination. Different equations for characteristic, frequent and quasi permanent combinations Partial factors are specified nationally Combination rules apply
Ultimate Limit States EQU - Equilibrium STR - Strength GEO - Ground Failure/Deformation FAT - Fatigue Failure Combination of Actions Representative Values of Actions Achievement of Consistent Levels of Reliability Use of Alternative Equations Geotechnical Actions and Resistances
- Serviceability Limit States (Reversible and Irreversible) deflexion cracking vibration - Accidental Limit States (including Snow) - Seismic Limit States (EN 1998 Not generally applicable in Ireland)
Safety (Reliability) Within competence of members states - Differences in geographical or climatic conditions - Different levels of protection - Technical classes - Alternative design methods - Determined at national level - Nationally Determined Parameters (NDPs) - National Annex
National Implementation EN Eurocode text (official languages English, French & German) Equivalent text (National language) National Title Page National Foreword National Annex (with NDP s) National Annex not necessary if all recommended values accepted e.g. IS. EN 1991-6 Silos and Tanks Or not relevant IS. EN 1998 Seismic Design
National Annex includes; NDP s Nationally Determined Parameters Decisions on Informative Annexes Non contradictory complementary information Bibliography (optional)
Nationally Determined Parameters - Must be clearly made known - Apply in member state that structure is built in not designed in - Do not replace with National Regulations - Apply to Public Procurement Projects
National Annexes (NA s) Irish Approach Nationally Determined Parameters (NDP s) Consider use of Eurocode Recommended Values UK values should be considered in view of BSI standards currently being used in Ireland Review for Irish conditions cf BS 8110 and IS 326/BS 8500 and IS EN 206 More flexible than UK e.g. Alternative Geotechnical Designs
National Annexes EN 1990 Basis of Structural Design Issued Minor differences with UK. European Recommended Values normally used EN 1991-1-1 Dead & Imposed Loads - issued Irish divergence from UK values National Annex much closer to European Recommended Value. EN 1991-1-2 Fire - issued Study by BRE. Similar to UK EN 1991-1-3 Snow Similar to UK EN 1991-1-4 Wind Study by Arup Wind likely to be similar to UK
National Annexes - Studies EN 1991-1-2 Actions on Structures Exposed to Fire Study by BRE - UK practice EN 1991-1-4 Wind Actions in progress Study by Arup Wind (likely to be UK practice) New wind map Awaiting publication of UKNA EN 1992 Design of Concrete Structures in progress Study by Kavanagh Mansfield & Partners & Lee McCullough & Partners EN 1993 Following European practice EN 1996 Design of Masonry Structures in progress Study by Lee McCullough & Partners Bridge Study National Road Authority study of Bridge related parts Roughan & O Donovan Faber Maunsell (likely to be similar to UK practice) Also Iarnrod Eireann
Implementation Clock ticking March 2010 National Annex publication Demand from Europe Public Works contracts Withdrawal of National Codes Up to date design Product standards Acceptance of CE marking
References ISEN 1990-ISEN 1999 published by NSAI with National Annexes Codes also published by other National Standards bodies Designers Guide to EN1990 Gulvanessian, Calgaro, and Holicky, Thomas Telford Geotechnical Design to Eurocode 7, Trevor Orr and Eric Farrell Designers Guide to the other EN s published by Thomas Telford Eurocode website, commission website, jrc website, www.eurocodes.co.uk, Institution of Civil Engineers Implementation of Structural in the U.K, Office of the Deputy Prime Minister National Strategy for Implementation of the Structural, Institution of Structural Engineers Numerous articles published in NSAI, Engineers Ireland, IStructE and NCE journals Access steel, Concrete Society
Photographs NASA Visible Earth (http://visibleearth.nasa.gov/)
Seminars EN 1990 Basis on Design EN 1991 Actions on Structures and EN 1998 Seismic Action Speakers: Jim Mansfield, Chairman of Technical Group and Dr. Brian Broderick, Dept of Civil Structural and Environmental Engineering, TCD
VENUES: 11 November Venue: Sheraton Athlone Hotel Gleeson Street Athlone Co. Westmeath 18 November Venue: Engineers Ireland 22 Clyde Road Ballsbridge Dublin 4 25 November Venue: Cork International Airport Hotel Gate 2 Cork Airport Business Park Cork
Seminar Booking Information Date Venue 11 November Sheraton Athlone Hotel, Gleeson Street, Athlone 18 November Engineers Ireland, 22 Clyde Road, Ballsbridge 25 November Cork International Airport Hotel, Cork Session Time 9 5pm Fee: EI Members 325 Non Members 425 Fee includes course material, tea/coffee and lunch Payment: Cancellation: Booking: Contact: Payment must accompany registration and may be made by Cheque Credit Card or, where appropriate, Purchase Order. A 50% cancellation fee (to cover administration costs) will be charged for cancellations received within 7 days prior to commencement of the seminar. Cancellations received on the day of the seminar will incur the full seminar fee. Substitutions are allowed. Bookings can be made by returning this Registration Form. Telephone bookings MUST BE accompanied by written confirmation either by post or fax CPD Training Team, Engineers Ireland, 22 Clyde Road, Ballsbridge, Dublin 4. Phone 01 665 1325, Fax: 01 668 4248