Climate change and the effects on. by Alan Hall Construction Standards Coordination Manager, BSI

Transcription

1 1 Climate change and the effects on codes and regulations by Alan Hall Construction Standards Coordination Manager, BSI

2 Contents 2 1 Rethinking standards in construction (2006) 2 Adaptation of standards to climate change(2009) 3 Work of UK Climate Impacts Programme 4I Incorporation into codes and standards d 5 Future work

3 Our goal is to produce high quality standards that are relevant and easy to use High quality Relevant Easy to use

4 In 2006 we launched an initiative to revitalise our standards making programme 4

5 In the past, standards have focused on supporting regulation rather than supporting industry performance 5

6 To ensure that standards better support performance (as well as regulation), we have held 7 workshops 6 Strategic working group INDUSTRY & PROFESSIONS Andy Green, Director, Faithfull & Gould Bob White, Chairman, Mace & CE Dr John Roberts, Director, Jacobs Babtie John Tebbit, Director, Construction Products Association Michael Finlay, PA Finlay Nick Terry, Chairman, BDP Peter Anderson, Director, Balfour Beatty Richard Ogden, Chairman, BuildOffsite Steve McGuckin, Director, Land Securities John Reyers, Director, Sanderson Weatherall John Worthington, DEGW Terry Hill, Chairman, Arup GOVERNMENT John Brumwell, Construction Sector Unit, BERR Ian Harrison, Director, Innovation Diffusion, BERR Tariq Nawaz, Building Standards, CLG David idadamson, Director, OGC Phil Heenan, Team Leader, Smarter Construction, OGC

7 The Report recommended industry workshops to identify new standards & revisions to existing standards 7 Building types Residential Commercial Infrastructure Educational & Health Industrial Sectors Structures & design Construction products Building processes Water FM Procurement & performance management

8 To guarantee that the initiative delivers, we have created committees to manage its implementation 8

9 Relevant The major issue for industry is the lack of supply chain integration 9

10 Relevant The major issue for government is climate change 10 Climate change scenarios

11 Relevant We also have a major work programme that implements European regulations 11 Eurocodes the single most important change to construction standards ever = European standards used in the structural design of buildings Construction Product Regulations = Implementation of mandatory CE marking for all products

12 The Rethinking Standards report also recommended that we review how we publish standards Presentational style 2. Software integration Easy to use 3. Training / CPD

13 Easy to use Industry has also stressed the value of making standards easier to use 13 Objective Construction Standards Online Eurocodes Online Objective: 4 Pre-compliance business cases Objective: 2 training courses

14 High quality Standards making is our foundations; so we are working to strengthen these UP-TO-DATE STANDARDS produced by 2. REPRESENTATIVE COMMITTEES 3. COMMITTEES THAT UNDERSTAND OUR GOALS

15 Standards and climate change 15 2 Adaptation of standards to climate change(2009) 3 Work of UK Climate Impacts Programme

16 The UK Climate Impacts Programme (UKCIP) 16 Helps organisations to assess how they might be affected by climate change, so that they can prepare p for its impacts. Set up by UK Government in 1997 Funded d by Department t for Environment, Food and Rural Affairs (Defra) Based at University of Oxford Works through: h Stakeholder-led research Partnerships Programmes, and Capacity building Common tools/datasets (free)

17 UK National Policy Context 17 Department of Environment, Food and Rural Affairs (Defra) Responsible for Domestic Adaptation Department of Energy and Climate Change (DECC) Responsible for Mitigation and International Adaptation Within Defra the Adapting to Climate Change team (ACC) Responding to the Climate Change Act (2008): 1. Developing statutory guidance for adaptation reporting 2. Overseeing National Risk Assessment 3. Co-ordinating work at national scale 4. Co-ordinating adaptation work at regional and local scale Devolved Administrations have devolved powers for adaptation area

18 Climate is Changing 18 Warming of the climate system is was the warmest decade on record, with the average surface air temperature for each unequivocal, as is now evident of the 10 years being 0.42 C above the annual average (14.00 C) from observations of increases in global average air (and ocean) temperatures, widespread melting of snow and ice, and rising global average sea level (IPCC WG1 AR4) Impacts of these changes are already apparent - globally, nationally and locally. Individuals/businesses and organizations are at risk and some have already begun to respond adaptation th warmest globally and 14 th warmest in the UK

19 UK Climate Projections 2009 (UKCP09) 19 Fifth generation of future climate information for UK Respond to wider user community o from primarily research to decision support Response to request by users for greater transparency on the uncertainty in projections of future climate -> probabilistic projections; enhanced spatial and temporal resolution -> 25km and seven overlapping 30-year time periods; Weather Generator marine information -> marine and coastal projections Desire by users to have greater access to the base data o Web- based User-interface CCIRG91 CCIRG96 UKCIP98 UKCIP02 UKCP09 UKCPNext??

20 Headline Messages from UKCP09 20 Hotter and drier summers Increase in extremely warm days Milder wetter winters Reduction in snowfall and frost Increase in frequency and intensity of rainfall events Decrease in groundwater levels Increased flooding of low-lying lying coastal areas Rising sea-levels

21 Impacts on Constructed Assets 21 Building fabric: vulnerable to wind, rain, heat and sun Building structure: vulnerable to storm, heat, subsidence, flood implications for urban design: new settlement forms? Demand for open space, tensions with high-density housing, innovative drainage/ water resource solutions transport infrastructure affected by: melting tarmac, buckling rails, subsidence, landslip, fallen trees, flooding but less freeze-thaw activity (c.f. winter 2009/1010) changing lifestyles and patterns of travel mean new expectations and requirements for built infrastructure impacts will vary geographically materials and designs based on historic climate may no longer be appropriate

22 UKCP09 User Interface (UI) 22

23 UK Climate Projections Probabilistic climate data for UK in 21st century 23 UK Climate Projections offer probabilistic climate projections UKCIP02 said: there will be this much change UK Climate Projections says: there is % probability there will be this much change Probability % Amount of projected change

24 Changes in the Temperature of Warmest Day s Summer under the Medium emissions scenario

25 BSi Guidance Document 25 Aims To help organisations either: ensure the resilience of an existing management system or use their existing business management system to ensure the organisation remain viable and profitable and are able to exploit opportunities.in the face of a changing climate or find out more about systematic approaches to adaptation

26 Standards and Climate change 26 BSI recognised the need for guidance for technical committees, and asked a small Panel to draft a guide Worked closely with UKCIP Published as Practice Note 1 Standards and climate change, October 2009

27 Content of Practice Note 27 Background Adaptation, including impacts of climate change [1] increased risk of coastal erosion and tidal flooding; [2] increased risk of non-tidal watercourse and culvert flooding; [3] shorter return periods for storm and flooding design; [4] greater effects of driving rain; [5] changes to the scale and pattern of damage and disruption from storms; [6] lower river and stream flows in summer; [7] greater potential for summer water shortages; [8] increased subsidence risk in vulnerable locations; [9] greater variation in water table and more soil shrinkage or swelling; [10] effects of wider ambient temperature range; [11] damage due to increased exposure to ultraviolet (UV) light; [12] increased demand for summer cooling; [13] reduced demand for winter heating.

28 Actions for BSI committees 28 Each technical committee is considering Practice Note No. 1 Standards & climate change and the implications of climate change on its portfolio of standards The will then be in a position to prepare individual business Cases for approval by BSI's Construction Acceptance Team, or simply to proceed where these are confirmed as not warranted. In the case of European and international standards, the committee may decide to propose new Work Items for amendment or possibly revision. UKCIP willing to help. Guidance for this initial exercise is available from UKCIP's Adaptation Wizard at 7&Itemid=297, with Steps 2 and 3 applicable.

29 Examples of responses from TCs 29 B/204 Structural design of low rise buildings to include in present revision of BS PRI/88 Plastics pipes, although the committee is responsible for c 350 standards, no standards are affected since most are adoptions of EN or ISO standards which take climate across Europe into effect, although h a different class of product may be required for UK use in future. Many of the standards to be launched by our new committees will address climate change during development of the standard CB/501 Flood risk & watercourses, CB/502 Maritime works CB/506 Water reuse All 11 infrastructure technical committees have now been through their portfolios of published standards, 685 of them in all, and prepared a summary

30 Next steps 30 Climate projections The UK climate change projections are not easily understood for construction design, so there may be a scope to produce a guide in conjunction with UKCIP, as a pilot to help committees through the process

31 Other climate change issues Climate portal. When standards reflect impact of climate change, it would be helpful to be able to search quickly for those with particular needs Weather benchmarks. Large design firms are able to assess likely l future ambient weather conditions, but a vehicle for small firms would be useful already developed by CIBSE and Met office

32 Other climate change issues Retrofitting. There is a scope for a code of practice on retrofitting the social housing stock to cope with climate change Flood resilient construction. CLG (2007) published a guidance document, so the time may now be right for a BS Code of Practice. UKCP09 data do not include wind speed due to lack of data, but no evidence that the upper wind speed will increase due to climate change under investigation in relation to structural Eurocodes

33 Timescales 33 1 New standards, e.g. those in preparation in CB/501 Flood risk & watercourses, CB/502 Maritime works and CB/506 Water reuse), 0-1 year 2 Existing standards, which require amendment or revision, i 1-3 years 3 Other topics, e.g. retrofitting, 2 years upwards

34 Summary 34 1 Described rethinking standards in construction and how BSI is revitalising construction standards. 2 Described the work of the UK Climate Impacts Programme, their 2009 climate projections, and the resulting work BSI is going on adaptation ti of standards d to climate change. Thank you! Any questions? Dr Alan J Hall Construction Standards Coordination Manager Tel: alan.hall@bsigroup.com