Cost-effective Mitigation Strategies for Residential Buildings in Australian Flood Plains

Cost-effective Mitigation Strategies for Residential Buildings in Australian Flood Plains

T. Maqsood M. Wehner K. Dale M. Edwards 

Geoscience Australia and Bushfire & Natural Hazards Cooperative Research Centre, Australia

Page: 
550-559
|
DOI: 
https://doi.org/10.2495/SAFE-V6-N3-550-559
Received: 
N/A
| |
Accepted: 
N/A
| | Citation

OPEN ACCESS

Abstract: 

In recent years, floods have impacted many Australian communities. The floods have resulted in significant logistics for emergency management and considerable costs to all levels of government and property owners to undertake damage repair and enable community recovery.

These impacts are fundamentally the result of inappropriate development on floodplains and a legacy of high risk building stock in flood-prone areas. The Australian Bushfire and Natural Hazards Collaborative Research Centre project entitled “Cost-effective mitigation strategy development for flood-prone buildings” aims to address this issue and is targeted at assessing mitigation strategies to reduce the vulnerability of existing residential building stock in Australian floodplain area.

This paper presents the outcomes of this ongoing project. Key tasks of the project include: (1) a classification of residential building stock, (2) a review of flood mitigation strategies, (3) vulnerability assessment of typical building types with and without mitigation, and (4) benefit cost analyses of all retrofit options for a range of severity/likelihood of flood hazard covering a selection of catchment types. The work will provide information on the optimal retrofit strategies in the context of Australian construction costs and catchment characteristics.

The research will also entail experimental testing of preferred materials to ascertain their resilience to flood water exposure. The outcome of this research will be an evidence base to inform decisions about mitigating the risk posed by buildings on floodplains. The information will be targeted to all levels of government, insurance industry and private property owners.

Keywords: 

Australia, cost-effectiveness, mitigation, vulnerability

  References

[1] Jonkman, S., Global perspectives of loss of human life caused by floods. Natural  Hazards, 34, pp. 151–175, 2005. http://dx.doi.org/10.1007/s11069-004-8891-3

[2] HNFMSC, Reducing Vulnerability of Buildings to Flood Damage: Guidance on Building in Flood Prone Areas, Hawkesbury-Nepean Floodplain Management Steering Committee: Parramatta, 2006.

[3] Australian Building Code Board (ABCB), Construction of Buildings in Flood Hazard Areas, Standard Version 2012.2, Canberra, Australia, 2012.

[4] BNHCRC, Cost-effective mitigation strategy development for flood prone buildings, bushfire and natural hazards cooperative research centre, available at http://www. bnhcrc.com.au/research/resilient-people-infrastructure-and-institutions/243

[5] Maqsood, T., Wehner, M., Dale, K. & Edwards, M., A schema to categorise residential building in Australian floodplains. Proceeding of the Floodplain Management Association National Conference, Brisbane, Australia, 2015.

[6] FEMA, Multi-hazard loss estimation methodology, flood model, HAZUS. Technical Manual. Federal Emergency Management Agency, Department of Homeland Security, Washington DC, USA, 2007.

[7] Schwarz, J. & Maiwald, H., Damage and loss prediction model based on the vulnerability of building types. Proceeding of the 4th International Symposium on Flood Defence, Toronto: Canada, 2008.

[8] Pacheco, B., Hernandez, H., Castro, P., Tingatinga, E., Suiza, R., Tan, L., Lonalong, R., Vreon, M., Aquino, H., Macuha, R., Mata, W., Villalba, I., Pascua, M., Ignacio, U., Germar, F., Dino, J., Reyes, G., Tirao, J. & Zarco, M., Development of Vulnerability Curves of Key Building Types in the Greater Metro Manila Area, Philippines, Institute of Civil Engineering, University of the Philippines Diliman, 2013.

[9] NIWA, Riskscape User Manual Version 0.2.30, available at https://riskscape.niwa. co.nz/

[10] Wehner, M., Maqsood, T., Corby, N., Edwards, M. & Middelmann-Fernandes, M., Augmented vulnerability models for inundation, Technical report submitted to DCCEE, Geoscience Australia, Canberra, Australia, 2012.

[11] Maqsood, S., Wehner, M., Ryu, H., Edwards, M., Dale, K. & Miller, V., GAR15 Vulnerability Functions: Reporting on the UNISDR/GA SE Asian Regional Workshop on Structural Vulnerability Models for the GAR Global Risk Assessment, 11–14 November, 2013, Geoscience Australia, Canberra, Australia, Record 2014/38. Geoscience Australia: Canberra, Australia, 2014. http://dx.doi.org/10.11636/Record.2014.038

[12] Bouwer, L., Poussin, J., Papyrakis, E., Daniel, V., Pfurtscheller, C., Thieken, A. & Aerts, J., Methodology report on costs of mitigation. CONHAZ project report, Report number WP04_2, 2011.

[13] Kunreuther, H., Disaster mitigation and insurance: learning from Katrina. The Annals of the American Academy, 604, pp. 208–227, 2006. http://dx.doi.org/10.1177/0002716205285685

[14] Crichton, D., Role of insurance in reducing flood risk. The Geneva Papers, 33, pp. 117–132, 2008. http://dx.doi.org/10.1057/palgrave.gpp.2510151

[15] Burby, R., Deyle, R., Godschalk, D. & Olshansky, R., Creating hazard resilient  communities through land-use planning. Natural Hazards Review, 1, pp. 99–106, 2000. http://dx.doi.org/10.1061/(ASCE)1527-6988(2000)1:2(99)

[16] Poussin, J., Bubeck, P., Aerts, J. & Ward, P., Potential of semi-structural and non-structural adaptation strategies to reduce future flood risk: case study for the Meuse. Natural Hazards and Earth Systems Science, 12, pp. 3455–3471, 2012. http://dx.doi.org/10.5194/nhess-12-3455-2012

[17] Brody, S., Kang, J. & Bernhardt, S., Identifying factors influencing flood mitigation at the local level in Texas and Florida: the role of organizational capacity. Natural Hazards, 52, pp. 167–184, 2010. http://dx.doi.org/10.1007/s11069-009-9364-5

[18] Productivity Commission, Natural disaster funding arrangements. Productivity commission inquiry report no. 74, Canberra, Australia, ISBN 978-1-74037-524-5, 2014.

[19] FEMA, Engineering Principles and Practices for Retrofitting Flood-Prone Residential Structures, FEMA P-259, 3rd., Federal Emergency Management Agency, USA, 2012.

[20] USACE, Flood proofing; techniques, programs and references. National Flood  Proofing Committee. US Army Corps of Engineers. Washington D.C., USA, 2000.

[21] USACE, Flood proofing; how to evaluate your options. National Flood Proofing  Committee. US Army Corps of Engineers. Washington D.C., USA, 1993.

[22] Bartzis, N., Flood insurance pricing. Proc. of the Floodplain Management Association National Conference, Tweed Heads, Australia, 2013.

[23] FEMA, Natural hazards and sustainability for residential buildings. FEMA P-798. Federal Emergency Management Agency, USA, 2010.

[24] USACE, Raising and moving the slab-on-grade house with slab attached. National Flood Proofing Committee. US Army Corps of Engineers. Washington D.C., USA, 1990.

[25] FEMA, Selecting appropriate mitigation measures for floodprone structures. FEMA 551. Federal Emergency Management Agency, USA, 2007.

[26] Kreibich, H., Thieken, A., Petrow, T., Meuller, M. & Merz, B. Flood loss reduction of private households due to building precautionary measures – lessons learned from the Elbe flood in August 2002. Natural Hazards and Earth Systems Science, 5, pp. 117–126, 2005. http://dx.doi.org/10.5194/nhess-5-117-2005

[27] FEMA, Floodproofing non-residential buildings. FEMA P-936. Federal Emergency Management Agency, USA, 2013.

[28] USACE, Flood proofing tests; tests of materials and systems for flood proofing structures. Floodplain Management Services Programs. National Flood Proofing Committee. US Army Corps of Engineers: Washington D.C., USA, 1988.

[29] Kreibich, H. & Thieken, A., Assessment of damage caused by high groundwater  inundation. Water Resources Research, 44, W09409. http://dx.doi.org/10.1029/2007WR006621

[30] FEMA, Flood damage-resistant materials requirements for buildings located in special flood hazard areas. NFIP Technical Bulletin 2. Federal Emergency Management Agency, USA, 2008.

[31] FEMA, Protecting Building Utilities From Flood Damage; Principles and Practices for the Design and Construction of Flood Resistant Building Utility Systems, FEMA P-348, 1st edn., Federal Emergency Management Agency, USA, 1999.

[32] Kreibich, H., Christenberger, S. & Schwarze, R., Economic motivation of households to undertake private precautionary measures against floods, Natural Hazards and Earth Systems Science, 11, pp. 309–321, 2011. http://dx.doi.org/10.5194/nhess-11-309-2011

[33] Bluemont, Flood prevention, available at http://www.bluemont.com.au/flood-prevention