Relationships between building features and wildfire damage in California, USA and Pedrógão Grande, Portugal
Simona Dossi A , Birgitte Messerschmidt B , Luís Mário Ribeiro C , Miguel Almeida C and Guillermo Rein
A *
+ Author Affiliations
- Author Affiliations
A Department of Mechanical Engineering, and Leverhulme Centre for Wildfires, Environment, and Society, Imperial College London, London, UK.
B National Fire Protection Association, Quincy, MA, USA.
C University of Coimbra, ADAI, Coimbra, Portugal.
* Correspondence to: g.rein@imperial.ac.uk
International Journal of Wildland Fire 32(2) 296-312 https://doi.org/10.1071/WF22095
Submitted: 17 March 2022 Accepted: 6 November 2022 Published: 23 December 2022
© 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of IAWF. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)
Abstract
Background: Buildings in communities near wildlands, in the wildland–urban interface (WUI), can experience wildfire damage.
Aims: To quantitatively assess the relationship between building features and damage, a building wildfire resistance index is developed and validated with the 2013–2017 CAL FIRE (DINS) database from California, USA, and the 2017 Pedrógão Grande Fire Complex post-fire investigation from Portugal.
Methods: Three statistical dependence tests are compared to evaluate the relationship between selected building features and damage. The Wildfire Resistance Index (WRI), range: [–1, 1], is proposed and validated as a rating for building wildfire susceptibility.
Key results: The most correlated features to wildfire damage are the presence of vent screens and deck materials in California, and exterior walls material and deck materials in Portugal. For Portugal, as WRI increases by 50%, linear regression estimates a 48% decrease in proportion of highly damaged buildings, and a 42% increase in proportion of low damage buildings (R2 of 0.93 and 0.90, respectively). A total of 65% of California buildings with WRI = 1 were destroyed, compared to average 85% for WRI ≥−0.33.
Conclusions: The WRI quantifies the wildfire damage experienced by buildings in two diverse WUI regions.
Implications: The WRI could be used as an estimator of wildfire damage but it needs further development.
Keywords: buildings, California wildfire, case study, damage, ignition, Portugal wildfire, statistical analysis, vulnerability, wildfire, wildland–urban interface.
References
Andersen LM, Sugg MM (2019) Geographic multi-criteria evaluation and validation: A case study of wildfire vulnerability in Western North Carolina, USA following the 2016 wildfires. International Journal of Disaster Risk Reduction 39, 101123| Geographic multi-criteria evaluation and validation: A case study of wildfire vulnerability in Western North Carolina, USA following the 2016 wildfires.Crossref | GoogleScholarGoogle Scholar |
Babrauskas V (2003) Ignition Sources. In ‘Ignition Handbook’. pp. 497–590. (Fire Science Publishers)
Bahrani B, Hemmati V, Zhou A, Quarles SL (2018) Effects of natural weathering on the fire properties of intumescent fire-retardant coatings. Fire and Materials 42, 413–423.
| Effects of natural weathering on the fire properties of intumescent fire-retardant coatings.Crossref | GoogleScholarGoogle Scholar |
Barrett K, Quarles SL, Gorham DJ (2022) Construction Costs for a Wildfire-Resistant Home: California Edition. Available at https://headwaterseconomics.org/natural-hazards/wildfire-resistant-costs-california/
Biswas K, Werth D, Gupta N (2013) A home ignition assessment model applied to structures in the wildland-urban interface. In ‘Thermal Performance of the Exterior Envelopes of Whole Buildings XII International Conference’. Available at https://web.ornl.gov/sci/buildings/conf-archive/2013%20B12%20papers/085_Biswas.pdf
Blanchi R, Leonard JE, Leicester RH (2006) Lessons learnt from post-bushfire surveys at the urban interface in Australia. Forest Ecology and Management 234, S139
| Lessons learnt from post-bushfire surveys at the urban interface in Australia.Crossref | GoogleScholarGoogle Scholar |
Boboulos M, Purvis MRI (2009) Wind and slope effects on ROS during the fire propagation in East-Mediterranean pine forest litter. Fire Safety Journal 44, 764–769.
| Wind and slope effects on ROS during the fire propagation in East-Mediterranean pine forest litter.Crossref | GoogleScholarGoogle Scholar |
Butler CP (1974) The Urban/Wildland Fire Interface. Proceedings of Western Stattes Section/Combustion Institute Papers 74, 1–17.
Caton SE, Hakes RSP, Gorham DJ, Zhou A, Gollner MJ (2017) Review of Pathways for Building Fire Spread in the Wildland Urban Interface Part I: Exposure Conditions. Fire Technology 53, 429–473.
| Review of Pathways for Building Fire Spread in the Wildland Urban Interface Part I: Exposure Conditions.Crossref | GoogleScholarGoogle Scholar |
Cohen J (1988) ‘Statistical Power Analysis for the Behavioral Sciences’, 2nd edn. (Lawrence Erlbaum Associates, Publishers: New York)
| Crossref |
Cohen JD (2000) Preventing disaster: Home ignitability in the wildland-urban interface. Journal of Forestry 98, 15–21.
| Preventing disaster: Home ignitability in the wildland-urban interface.Crossref | GoogleScholarGoogle Scholar |
Cohen JD (2004) Relating flame radiation to home ignition using modeling and experimental crown fires. Canadian Journal of Forest Research 34, 1616–1626.
| Relating flame radiation to home ignition using modeling and experimental crown fires.Crossref | GoogleScholarGoogle Scholar |
Cohen JD (2008) The wildland-urban interface fire problem: a consequence of the fire exclusion paradigm. Forest History Today 2008, 20–26.
Cohen JD, Butler BW (1998) Modeling potential structure ignitions from flame radiation exposure with implications for wildland/urban interface fire management. In ‘Proceedings of the 13th Fire and Forest Meteorology Conference’, Lorne, Australia, 1996. pp. 81–86. (International Association of Wildland Fire)
Finney MA, Cohen JD, Forthofer JM, McAllister SS, et al. (2015) Role of buoyant flame dynamics in wildfire spread. Proceedings of the National Academy of Sciences 112, 9833–9838.
| Role of buoyant flame dynamics in wildfire spread.Crossref | GoogleScholarGoogle Scholar |
Galiana-Martin L, Herrero G, Solana J (2011) A wildland–urban interface typology for forest fire risk management in mediterranean areas. Landscape Research 36, 151–171.
| A wildland–urban interface typology for forest fire risk management in mediterranean areas.Crossref | GoogleScholarGoogle Scholar |
Graham R, Finney M, McHugh C, Cohen J, et al. (2012) ‘Fourmile canyon fire findings’. General Technical Report RMRS-GTR (USDA Forest Service)
Gûnel E, Dickey J (1974) Bayes Factors for Independence in Contingency Tables. Biometrika 61, 545–557.
| Bayes Factors for Independence in Contingency Tables.Crossref | GoogleScholarGoogle Scholar |
Hakes RSP, Caton SE, Gorham DJ, Gollner MJ (2017) A Review of Pathways for Building Fire Spread in the Wildland Urban Interface Part II: Response of Components and Systems and Mitigation Strategies in the United States. Fire Technology 53, 475–515.
| A Review of Pathways for Building Fire Spread in the Wildland Urban Interface Part II: Response of Components and Systems and Mitigation Strategies in the United States.Crossref | GoogleScholarGoogle Scholar |
Henning A, Cox J, Shew D (2016) CAL FIRE’s Damage Inspection Program – Its Evolution and Implementation, NFPA Conference & Expo. Available at http://www.fltwood.com/perm/nfpa-2016/scripts/sessions/M26.html [accessed 25 January 2022]
Hysa A (2021) Indexing the vegetated surfaces within WUI by their wildfire ignition and spreading capacity, a comparative case from developing metropolitan areas. International Journal of Disaster Risk Reduction 63, 102434
| Indexing the vegetated surfaces within WUI by their wildfire ignition and spreading capacity, a comparative case from developing metropolitan areas.Crossref | GoogleScholarGoogle Scholar |
IBHS (2021) Suburban Wildfire Adaptation Roadmaps. Available at https://ibhs.org/wp-content/uploads/ibhs-wildfire-roadmaps_executive-summary.pdf
Kadel J, Hedayati F, Quarles SL, Zhou A (2021) Effect of Environmental Conditions on the Dehydration and Performance of Fire-Protective Gels. Fire Technology 57, 1241–1257.
| Effect of Environmental Conditions on the Dehydration and Performance of Fire-Protective Gels.Crossref | GoogleScholarGoogle Scholar |
Klassen MS, Sutula JA, Holton MM, Roby RJ (2010) Transmission Through and Breakage of Single and Multi-Pane Glazing Due to Radiant Exposure: State of Research. Fire Technology 46, 821–832.
| Transmission Through and Breakage of Single and Multi-Pane Glazing Due to Radiant Exposure: State of Research.Crossref | GoogleScholarGoogle Scholar |
Knapp EE, Valachovic YS, Quarles SL, Johnson NG (2021) Housing arrangement and vegetation factors associated with single-family home survival in the 2018 Camp Fire, California. Fire Ecology 17, 25
| Housing arrangement and vegetation factors associated with single-family home survival in the 2018 Camp Fire, California.Crossref | GoogleScholarGoogle Scholar |
Koo E, Pagni PJ, Weise DR, Woycheese JP (2010) Firebrands and spotting ignition in large-scale fires. International Journal of Wildland Fire 19, 818–843.
| Firebrands and spotting ignition in large-scale fires.Crossref | GoogleScholarGoogle Scholar |
Kursa MB, Rudnicki WR (2010) Feature selection with the boruta package. Journal of Statistical Software 36, 1–13.
| Feature selection with the boruta package.Crossref | GoogleScholarGoogle Scholar |
Lautenberger C, Fernandez-Pello AC (2009) Spotting ignition of fuel beds by firebrands. WIT Transactions on Modelling and Simulation 48, 603–612.
| Spotting ignition of fuel beds by firebrands.Crossref | GoogleScholarGoogle Scholar |
Lee MD, Wagenmakers EJ (2014) ‘Bayesian Cognitive Modeling: A Practical Course.’ (Cambridge University Press) Available at https://books.google.co.uk/books?id=50tkAgAAQBAJ
Manzello SL (2013) ‘The Performance of Concrete Tile and Terracotta Tile Roofing Assemblies Exposed to Wind-Driven Firebrand Showers.’ National Institute of Standards and Technology, U.S. Department of Commerce.
| Crossref |
Manzello SL, Suzuki S (2014) Exposing decking assemblies to continuous wind-driven firebrand showers. Fire Safety Science 11, 1339–1352.
| Exposing decking assemblies to continuous wind-driven firebrand showers.Crossref | GoogleScholarGoogle Scholar |
Manzello SL, Shields JR, Hayashi Y, Nii D (2008) Investigating the vulnerabilities of structures to ignition from a firebrand attack. Fire Safety Science 9, 143–154.
| Investigating the vulnerabilities of structures to ignition from a firebrand attack.Crossref | GoogleScholarGoogle Scholar |
Manzello SL, Hayashi Y, Yoneki T, Yamamoto Y (2010a) Quantifying the vulnerabilities of ceramic tile roofing assemblies to ignition during a firebrand attack. Fire Safety Journal 45, 35–43.
| Quantifying the vulnerabilities of ceramic tile roofing assemblies to ignition during a firebrand attack.Crossref | GoogleScholarGoogle Scholar |
Manzello SL, Suzuki S, Hayashi Y (2012a) Enabling the study of structure vulnerabilities to ignition from wind driven firebrand showers: A summary of experimental results. Fire Safety Journal 54, 181–196.
| Enabling the study of structure vulnerabilities to ignition from wind driven firebrand showers: A summary of experimental results.Crossref | GoogleScholarGoogle Scholar |
Manzello SL, Park S-H, Shields JR, Hayashi Y, Suzuki S (2010b) ‘Comparison Testing Protocol for Firebrand Penetration through Building Vents: Summary of BRI/NIST Full Scale and NIST Reduced Scale Results.’ NIST Technical Note 1659 (National Institute of Standards and Technology: Gaithersburg, MD) Available at https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904793
Manzello SL, Suzuki S, Hayashi Y (2012b) Exposing siding treatments, walls fitted with eaves, and glazing assemblies to firebrand showers. Fire Safety Journal 50, 25–34.
| Exposing siding treatments, walls fitted with eaves, and glazing assemblies to firebrand showers.Crossref | GoogleScholarGoogle Scholar |
Manzello SL, Blanchi R, Gollner MJ, Gorham D, et al. (2018) Summary of workshop large outdoor fires and the built environment. Fire Safety Journal 100, 76–92.
| Summary of workshop large outdoor fires and the built environment.Crossref | GoogleScholarGoogle Scholar |
Manzello SL, Suzuki S, Naruse T (2019) Quantifying wind-driven firebrand production from roofing assembly combustion. Fire and Materials 43, 3–7.
| Quantifying wind-driven firebrand production from roofing assembly combustion.Crossref | GoogleScholarGoogle Scholar |
Maranghides A, Johnsson E (2008) Residential Structure Separation Fire Experiments. NIST Technical Note 1600. National Institute of Standards and Technology.
Maranghides A, Mell W (2012) Framework for Addressing the National Wildland Urban Interface Fire Problem- Determining Fire and Ember Exposure Zones using a WUI Hazard Scale. NIST Technical Note 1748. National Institute of Standards and Technology.
| Crossref |
Maranghides A, Link E, Mell WR, Maranghides A, Nazare S, Link E (2022) ‘NIST Outdoor Structure Separation Experiments (NOSSE): Preliminary Test Plan.’ National Institute of Standards and Technology, U.S. Department of Commerce.
| Crossref |
Meerpoel-Pietri K, Tihay-Felicelli V, Santoni PA (2021) Determination of the critical conditions leading to the ignition of decking slabs by flaming firebrands. Fire Safety Journal 120, 103017
| Determination of the critical conditions leading to the ignition of decking slabs by flaming firebrands.Crossref | GoogleScholarGoogle Scholar |
Mendes PJNF (2013) A influência do RCCTE na Arquitetura e as Perspetivas para o Futuro. Masters thesis. Universidade do Minho, Portugal. [In Portuguese with English abstract] Available at https://hdl.handle.net/1822/27624
NFPA 1140 (2022) NFPA 1140 Standard for Wildland Fire Protection. Available at https://www.nfpa.org/codes-and-standards
Nguyen D, Kaye NB (2021) Experimental investigation of rooftop hotspots during wildfire ember storms. Fire Safety Journal 125, 103445
| Experimental investigation of rooftop hotspots during wildfire ember storms.Crossref | GoogleScholarGoogle Scholar |
Orloff L, De Ris J, Markstein GH (1975) Upward turbulent fire spread and burning of fuel surface. Symposium (International) on Combustion 15, 183–192.
| Upward turbulent fire spread and burning of fuel surface.Crossref | GoogleScholarGoogle Scholar |
Pampaka M, Hutcheson G, Williams J (2016) Handling missing data: analysis of a challenging data set using multiple imputation. International Journal of Research & Method in Education 39, 19–37.
| Handling missing data: analysis of a challenging data set using multiple imputation.Crossref | GoogleScholarGoogle Scholar |
Papakosta P, Xanthopoulos G, Straub D (2017) Probabilistic prediction of wildfire economic losses to housing in Cyprus using Bayesian network analysis. International Journal of Wildland Fire 26, 10–23.
| Probabilistic prediction of wildfire economic losses to housing in Cyprus using Bayesian network analysis.Crossref | GoogleScholarGoogle Scholar |
Papathoma-Köhle M, Schlögl M, Garlichs C, Diakakis M, Mavroulis S, Fuchs S (2022) A wildfire vulnerability index for buildings. Scientific Reports 12, 6378
| A wildfire vulnerability index for buildings.Crossref | GoogleScholarGoogle Scholar |
Quarles SL, Sindelar M (2011) Wildfire Ignition Resistant Home Design (WIRHD) Program: Full-scale Testing and Demonstration Final Report. Available at https://www.osti.gov/servlets/purl/1032503
Quarles S, Standohar-Alfano C (2018) Ignition Potential of Decks Subjected to an Ember Exposure. Available at https://ibhs.org/wp‐content/uploads/Ignition‐Potential‐of‐Decks‐Subjected‐to‐an‐Ember‐Exposure.pdf
Quarles SL, Valachovic Y, Nakamura GM, Nader GA, de Lasaux MJ (2010) ‘Home Survival in Wildfire-Prone Areas: Building Materials and Design Considerations’. (University of California, Agriculture and Natural Resources)
| Crossref |
Ribeiro LM, Rodrigues A, Lucas D, Viegas DX (2020) The impact on structures of the Pedrógão Grande fire complex in June 2017 (Portugal). Fire 3, 57
| The impact on structures of the Pedrógão Grande fire complex in June 2017 (Portugal).Crossref | GoogleScholarGoogle Scholar |
Rouder JN, Speckman PL, Sun D, Morey RD, Iverson G (2009) Bayesian t tests for accepting and rejecting the null hypothesis. Psychonomic Bulletin & Review 16, 225–237.
| Bayesian t tests for accepting and rejecting the null hypothesis.Crossref | GoogleScholarGoogle Scholar |
| Crossref |
Shields TJ, Silcock GWH, Flood MF (2001) Performance of a single glazing assembly exposed to enclosure corner fires of increasing severity. Fire and Materials 25, 123–152.
| Performance of a single glazing assembly exposed to enclosure corner fires of increasing severity.Crossref | GoogleScholarGoogle Scholar |
Simeoni A (2016) Wildland Fires. In ‘SFPE Handbook of Fire Protection Engineering’. Fifth edn. (Eds MJ Hurley, D Gottuk, JR Hall, K Harada, E Kuligowski, M Puchovsky, J Torero, JM Watts, C Wieczorek) pp. 3283–3302. (Springer Science+Business Media)
| Crossref |
Smith E, Adams G (1991) ‘Incline Village/Crystal Bay defensible space handbook.’ (University of Nevada, North Lake Tahoe Fire District)
Southern Area Coordination Center (SACC) (2021) National Large Incident Year-to-Date Report, Predictive Services Intelligence. Available at https://gacc.nifc.gov/sacc/predictive/intelligence/NationalLargeIncidentYTDReport.pdf [accessed 10 February 2022]
Stekhoven DJ, Bühlmann P (2012) Missforest—non-parametric missing value imputation for mixed-type data. Bioinformatics 28, 112–118.
| Missforest—non-parametric missing value imputation for mixed-type data.Crossref | GoogleScholarGoogle Scholar |
Steward LG, Sydnor TD, Bishop B (2003) The ease of ignition of 13 landscape mulches. Arboriculture & Urban Forestry 29, 317–321.
| The ease of ignition of 13 landscape mulches.Crossref | GoogleScholarGoogle Scholar |
Suzuki S, Manzello SL (2021a) Investigating Coupled Effect of Radiative Heat Flux and Firebrand Showers on Ignition of Fuel Beds. Fire Technology 57, 683–697.
| Investigating Coupled Effect of Radiative Heat Flux and Firebrand Showers on Ignition of Fuel Beds.Crossref | GoogleScholarGoogle Scholar |
Suzuki S, Manzello SL (2021b) Towards understanding the effect of cedar roof covering application on firebrand production in large outdoor fires. Journal of Cleaner Production 278, 123243
| Towards understanding the effect of cedar roof covering application on firebrand production in large outdoor fires.Crossref | GoogleScholarGoogle Scholar |
Suzuki S, Manzello SL, Kagiya K, Suzuki J, Hayashi Y (2015) Ignition of Mulch Beds Exposed to Continuous Wind-Driven Firebrand Showers. Fire Technology 51, 905–922.
| Ignition of Mulch Beds Exposed to Continuous Wind-Driven Firebrand Showers.Crossref | GoogleScholarGoogle Scholar |
Syphard AD, Keeley JE, Massada AB, Brennan TJ, Radeloff VC (2012) Housing arrangement and location determine the likelihood of housing loss due to wildfire. PLoS One 7, e33954
| Housing arrangement and location determine the likelihood of housing loss due to wildfire.Crossref | GoogleScholarGoogle Scholar |
Takahashi F (2019) Whole-House Fire Blanket Protection From Wildland-Urban Interface Fires. Frontiers in Mechanical Engineering 5, 60
| Whole-House Fire Blanket Protection From Wildland-Urban Interface Fires.Crossref | GoogleScholarGoogle Scholar |
Torero J (2016) Flaming Ignition of Solid Fuels. In ‘SFPE Handbook of Fire Protection Engineering’. Fifth edn. (Eds MJ Hurley, D Gottuk, JR Hall, K Harada, E Kuligowski, M Puchovsky, J Torero, JM Watts, C Wieczorek) pp. 633–661. (Springer Science)
| Crossref |
US Department of Housing and Urban Development (2021) U.S. Census Bureau, Highlights of 2021 Characteristics of New Housing. Available at https://www.census.gov/construction/chars/highlights.html
Vacca P, Caballero D, Pastor E, Planas E (2020) WUI fire risk mitigation in Europe: A performance-based design approach at home-owner level. Journal of Safety Science and Resilience 1, 97–105.
| WUI fire risk mitigation in Europe: A performance-based design approach at home-owner level.Crossref | GoogleScholarGoogle Scholar |
Vacca P, Planas E, Mata C, Muñoz JA, Heymes F, Pastor E (2022) Experimental analysis of real-scale burning tests of artificial fuel packs at the Wildland-Urban Interface. Safety Science 146, 105568
| Experimental analysis of real-scale burning tests of artificial fuel packs at the Wildland-Urban Interface.Crossref | GoogleScholarGoogle Scholar |
Verisk (2022) Wildfire Risk Analysis, Verisk.com. Available at https://www.verisk.com/insurance/campaigns/location-fireline-state-risk-report/ [accessed 13 June 2022]
Watts JM (2008) Fire Risk Indexing. In ‘The SFPE Handbook of Fire Protection Engineering’. Fifth edn. (Eds MJ Hurley, D Gottuk, JR Hall, K Harada, E Kuligowski, M Puchovsky, J Torero, JM Watts, C Wieczorek) pp. 5168–5185. (Springer, New York)
| Crossref |
Wheeler J (2004) Testing for Deck Material Flammability. Fire Management 64, 13–15.
Wilson AAG (1984) Assessing the bushfire hazard of houses: A quantitative approach. NCRFR technical paper No. 6. National Centre for Rural Fire Research, Chisholm Institute of Technology, Melbourne.
Xiong C, Liu Y, Xu C, Huang X (2021) Acoustical Extinction of Flame on Moving Firebrand for the Fire Protection in Wildland–Urban Interface. Fire Technology 57, 1365–1380.
| Acoustical Extinction of Flame on Moving Firebrand for the Fire Protection in Wildland–Urban Interface.Crossref | GoogleScholarGoogle Scholar |
