Seismic Policy, Operations, and Research Uses for a Building Inventory in an Earthquake-Prone City

Abstract

After the 2016 New Zealand Kaikoura Earthquake, the absence of information about the state of buildings in Wellington proved to be a source of significant policy uncertainty. Authorities did not know what damages to expect and therefore how to react, and policies needed to be formulated without a clear quantification of the risks. Moreover, without detailed knowledge of the existing buildings, it was difficult to assess what the available legal and regulatory tools can achieve and choose among them. We describe the creation of a building inventory database for Wellington initiated by the authors. This database aims to assist the generation of research on the risks, impacts, and viable solutions for reducing future seismic risk in Wellington’s central business district (CBD). The database includes structural, economic, and market information on virtually every significant building in the CBD. Its primary purposes are: to collate and provide the best available information about the expected seismic performance of the existing building stock; to assess the impact of possible multiple building failures due to a seismic event; to describe a viable cost-effective path for seismic retrofitting; and to inform the design of a regulatory structure that can facilitate this resilience-building agenda.

Keywords

Building inventory / Building standards / Disaster risk assessment / Earthquake-prone city / Retrofit

References

[1] Anagnos T, Comerio MC, Goulet C, May PJ. Developing regional building inventories: Lessons from the field. Earthquake Spectra, 2012, 28(4): 1305-1329

[2] Anagnos T, Comerio MC, Stewart JP. Earthquake loss estimates and policy implications for nonductile concrete buildings in Los Angeles. Earthquake Spectra, 2016, 32(4): 1951-1973

[3] Brundson, D., K. Elwood, and R. Henry. 2017. Wellington City Council Targeted Assessment Programme. Kestrel Group and QuakeCoRE report. https://wellington.govt.nz/~/media/about-wellington/emergency-management/files/targeted-assessment-programme-summary.pdf. Accessed 10 Oct 2020.

[4] Chang S, Taylor JE, Elwood KJ, Seville E, Brunsdon D, Gartner M. Urban disaster recovery in Christchurch: The central business district cordon and other critical decisions. Earthquake Spectra, 2014, 30(1): 513-532

[5] Comerio, M. 2000. The economic benefits of a disaster resistant university: Earthquake loss estimation for UC Berkeley. Working paper 2000-02. Institute of Urban and Regional Development, University of California, Berkeley, USA. https://escholarship.org/uc/item/78g7j8jq. Accessed 10 Oct 2020.

[6] Comerio, M.C., and T. Anagnos. 2012. Los Angeles inventory: Implications for retrofit policies for nonductile concrete buildings. 15th World Conference on Earthquake Engineering, 24–28 September 2012.

[7] Falcon Consulting. 2019. Unreinforced masonry buildings programme debrief report to Wellington City Council. https://wellington.govt.nz/~/media/services/rates-and-property/earthquake-prone-buildings/files/urm/umr-debrief-final-report.pdf?la=en. Accessed 10 Oct 2020.

[8] Filippova O, Noy I. Preventing buildings from falling down: Challenges for earthquake-strengthening policy in small-town New Zealand. Disasters, 2020, 44(1): 179-204

[9] Grant D, Bommer J, Pinho R, Calvi G, Goretti A, Meroni F. A prioritization scheme for seismic intervention in school buildings in Italy. Earthquake Spectra, 2007, 23(2): 291-314

[10] Hancilar U, El-Hussain I, Sesetyan K, Deif A, Cakti E, Al-Rawas G, Safak E, Al-Jabri K. Earthquake risk assessment for the building inventory of Muscat. Sultanate of Oman. Natural Hazards, 2018, 93(3): 1419-1434

[11] Harris, C. 2016. “Musical chairs” as quake closes 11 per cent of Wellington CBD space. https://www.stuff.co.nz/business/property/87287789/musical-chairs-as-quake-closes-11-per-cent-of-wellington-cbd-space. Accessed 10 Oct 2020.

[12] Huang IB, Keisler J, Linkov I. Multi-criteria decision analysis in environmental sciences: Ten years of applications and trends. Science of The Total Environment, 2011, 409(19): 3578-3594

[13] Jaiswal, K.S., and D.J. Wald. 2008. Creating a global building inventory for earthquake loss assessment and risk management. U.S. Geological Survey open-file report 2008-1160. Reston, VA: U.S. Geological Survey.

[14] Kircher CA, Whitman RV, Holmes WT. HAZUS earthquake loss estimation methods. Natural Hazards Review, 2006, 7(2): 45-59

[15] Langridge RM, Ries WF, Litchfield NJ, Villamor P, Van Dissen RJ, Barrell DJA, Rattenbury MS, Heron DW The New Zealand active faults database. New Zealand Journal of Geology and Geophysics, 2016, 59(1): 86-96

[16] Nguyen, C. 2020. Homeowners’ choice when the government proposes a managed retreat. International Journal of Disaster Risk Reduction 47: Article 101543.

[17] Nguyen, C., and I. Noy. 2018. Measuring the impact of insurance on urban recovery with light: The 2010–2011 New Zealand earthquake. CESifo working paper. Munich: CESifo GmbH.

[18] Palermo V, Tsionis G, Sousa ML. Building stock inventory to assess seismic vulnerability across Europe, 2018, Luxembourg: Publications Office of the European Union

[19] Phillips LD, Bana e Costa. CA. Transparent prioritization, budgeting and resource allocation with multi-criteria decision analysis and decision conferencing. Annals of Operations Research, 2007, 154(1): 51-68

[20] Puranam A, Filippova O, Pastor-Paz J, Stephens M, Elwood KJ, Ismail N, Noy I, Opabula E. A detailed inventory of medium- to high-rise buildings in Wellington’s central business district. Bulletin of the New Zealand Society for Earthquake Engineering, 2019, 52(4): 172-192

[21] Russell AP, Ingham JM. Prevalence of New Zealand’s unreinforced masonry buildings. Bulletin of the New Zealand Society for Earthquake Engineering, 2010, 43(3): 182-201

[22] Sucuoğlu H, Yakut A, Özmen A, Kubin J. Seismic risk prioritization and retrofit cost evaluation of code-deficient RC public buildings in Turkey. Earthquake Spectra, 2015, 31(1): 601-614

[23] Theilen-Willige B, Savvaidis P, Tziavos IN, Papadopoulou I. Remote sensing and Geographic Information Systems (GIS) contribution to the inventory of infrastructure susceptible to earthquake and flooding hazards in north-eastern Greece. Geosciences, 2012, 2(4): 203-220

[24] USGS (U.S. Geological Survey). 2014. Where do earthquakes occur? https://www.usgs.gov/faqs/where-do-earthquakes-occur?qt-news_science_products=0#qt-news_science_products. Accessed 10 Oct 2020.

[25] Walsh KQ, Jafarzadeh R, Short NM, Ingham JM. Seismic risk management of a large public facilities portfolio: A New Zealand case study. Facilities, 2016, 34(13/14): 809-827

[26] Walsh, K.Q., P.A. Cummuskey, R. Jafarzadeh, and J.M. Ingham. 2017. Rapid identification and taxonomical classification of structural seismic attributes in a regionwide commercial building stock. Journal of Performance of Constructed Facilities 31(1): Article 04016067.

[27] WCC (Wellington City Council). 2015. Central city population growth. https://wellington.govt.nz/your-council/plans-policies-and-bylaws/urban-development/managing-growth/central-city-population-growth. Accessed 10 Oct 2020.

[28] WCC (Wellington City Council). 2019. Council chief executive makes necessary decision to close central library: “Safety is our number one priority”. Press release, 19 March 2019. Wellington, New Zealand: WCC.

[29] Yathon J, Adebar P, Elwood KJ. A detailed inventory of non-ductile concrete shear wall buildings. Earthquake Spectra, 2017, 33(2): 605-622

[30] Yepes-Estrada C, Silva V, Valcárcel J, Acevedo AB, Tarque N, Hube MA, Coronel G, María HS. Modeling the residential building inventory in South America for seismic risk assessment. Earthquake Spectra, 2017, 33(1): 299-322