Property Level Flood Protection

Transcription

1 Property Level Flood Protection Andrew McLachlan Manager East Riding of Yorkshire Building Better Buildings Guildhall, Hull 1 December

2 Flood Risk in East Yorkshire 2 nd Most at flood risk area in UK Risk from: Tidal Fluvial Pluvial Groundwater 2 2

3 Flood Risk in East Yorkshire Entirely reliant on manmade drainage systems Dutch Model Ditches (Cuttings) Dykes (River Hull) Sluices (Cloughs) Pumps 3 3

4 Options for Managing Flood Risk Avoid (Sequential Approach) Community Level Flood Defence Land Raising Water Compatible Design Protection (PLFP) Resilient Design 4 4

5 Options for Managing Flood Risk Avoid (Sequential Approach) Community Level Flood Defence Land Raising Water Compatible Design Protection (PLFP) Resilient Design 5 5

6 Options for Managing Flood Risk Avoid (Sequential Approach) Community Level Flood Defence Land Raising Water Compatible Design Protection (PLFP) Resilient Design 6 6

7 Options for Managing Flood Risk Avoid (Sequential Approach) Community Level Flood Defence Land Raising Water Compatible Design Protection (PLFP) Resilient Design 7 7

8 Options for Managing Flood Risk Avoid (Sequential Approach) Community Level Flood Defence Land Raising Water Compatible Design Protection (PLFP) Resilient Design 8 8

9 Options for Managing Flood Risk Avoid (Sequential Approach) Community Level Flood Defence Land Raising Water Compatible Design Protection (PLFP) Resilient Design 9 9

10 When is PLFP Appropriate? Existing Development No other solution available No other solution affordable Last line of defence New Development Where there are wider sustainability issues Where the development is necessary To meet the requirements of the Strategic Flood Risk Assessment 10 10

11 East Riding Experience Defra sponsored pilot scheme Town of Hedon and Village of Bilton 1000 properties flooded in 2007 Successful bid for 3 grants Total of 600K 150 properties Ring-fenced for protection at the property level Tight timescales for delivery 11 11

12 East Riding Experience Defra sponsored pilot scheme Town of Hedon and Village of Bilton 1000 properties flooded in 2007 Successful bid for 3 grants Total of 600K 150 properties Ring-fenced for protection at the property level Tight timescales for delivery 12 12

13 East Riding Experience Defra sponsored pilot scheme Town of Hedon and Village of Bilton 1000 properties flooded in 2007 Successful bid for 3 grants Total of 600K 150 properties Ring-fenced for protection at the property level Tight timescales for delivery 13 13

14 East Riding Experience Procurement Dozens of unaccredited products No real world deployment or testing Price / Quality Assessment Testing Build test rig house Test products in different combinations Test install-ability of products 14 14

15 Assessment and Engagement Test Rig Simulate building style and local conditions Built in simulated poor workmanship Controlled environment Stakeholder engagement Open days Kinaesthetic and physical handling of products Aesthetic and storage considerations 15 15

16 PLFP Product Types Passive No requirement for householder to be present Very effective Very expensive to install (labour costs) Active Requirement for householder to be present Storage issues Deployment issues for the less able 16 16

17 There s a hole in my bucket Consider Building materials Floor construction Build quality Flood depth and duration Ground conditions Age of property Structural characteristics (600mm +FFL) Below ground drainage WC / Shower / Wet Room / Utility Utilities Displacement 17 17

18 A Comprehensive Solution Consider Door and window guards Airbrick cover/device and/or Concrete floor and tanking Ventilation Non return / Isolation valves on waste Seal around incoming utility pipes Seal under thresholds Floor covering Lime plaster Sockets and utilities Pumps Don t forget the building regs! 18 18

19 PLFP Standards BSI Standards PAS : Flood Protection products. Part 1: Building aperture products PAS : Flood Protection products. Part 2: Temporary and demountable flood protection PAS : Flood protection products. Part 3: Buildings & building skirt systems PAS : Flood protection products. Part 4: Demountable products Useful Links

20 Consider Professional Advice and Independent Project Management 20 20

21 Future Standards Improved NPPF Technical Guidance? Improved SFRA guidance? Building regulations? LLFA Technical Approval? 21 21

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