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RESEARCH ARTICLE
Contents Vol 14(3)

Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation*

David R. Weise A D , Robert H. White B , Frank C. Beall C and Matt Etlinger C
+ Author Affiliations
- Author Affiliations

A Forest Fire Laboratory, Pacific Southwest Research Station, USDA Forest Service, 4955 Canyon Crest Drive, Riverside, CA 92507, USA.

B Forest Products Laboratory, USDA Forest Service, One Gifford Pinchot Drive, Madison, WI 53726-2398, USA. Telephone: +1 608 231 9265; fax: +1 608 231 9592; email: rhwhite@fs.fed.us

C University of California, 211 Mulford Hall, Berkeley, CA 94720, USA. Telephone: +1 510 231 9564; email: frank.beall@nature.berkeley.edu

D Corresponding author. Telephone: +1 951 680 1500; fax: +1 951 680 1501; email: dweise@fs.fed.us

International Journal of Wildland Fire 14(3) 321-338 https://doi.org/10.1071/WF04035
Submitted: 1 August 2004  Accepted: 1 August 2005   Published: 12 September 2005

Abstract

The flammability of living vegetation is influenced by a variety of factors, including moisture content, physical structure and chemical composition. The relative flammability of ornamental vegetation is of interest to homeowners seeking to make their homes ‘fire safe’. The relative importance of the factors influencing fire behaviour characteristics, such as flammability, is unknown. In the present study, oxygen consumption calorimetry was used to obtain selected combustion characteristics of ornamental vegetation. Peak heat release rate, mass loss rate, time to ignition and effective heat of combustion of 100 × 100-mm samples of foliage and small branches were measured using a bench-scale cone calorimeter. Green and oven-dry samples of 10 species were collected and tested seasonally for a period of 1 year. Similar measurements were made on whole shrubs in an intermediate-scale calorimeter. The range of cone calorimeter peak heat release rates for green and oven-dry samples was 1–176 and 49–331 kW m−2, respectively. Moisture content significantly reduced heat release rates and increased time to ignition. Peak heat release rates for Olea europea and Adenostoma fasciculatum were consistently highest over the year of testing; Aloe sp. consistently had the lowest heat release rate. The correlation of peak heat release rates measured by the cone calorimeter and an intermediate-scale calorimeter was statistically significant yet low (0.51). The use of the cone calorimeter as a tool to establish the relative flammability rating for landscape vegetation requires additional investigation.


References


Anderson HE (1970) Forest fuel ignitability. Fire Technology  6, 312–319.
ASTM International (2004) ‘Standard test method for heat and visible smoke release rates for materials and products using an oxygen consumption calorimeter.’ (ASTM International: West Conshohocken, PA)

Babrauskas V (1984) Development of the cone calorimeter: a bench scale heat release rate apparatus based on oxygen consumption. Fire and Materials  8, 81–95.
| Crossref | GoogleScholarGoogle Scholar | Babrauskas V (2002a) Heat release rates. In ‘The SFPE handbook of fire protection engineering’. 3rd edn. (Eds Society of Fire Protection Engineers) pp. 3-1–3-37. (National Fire Protection Association: Quincy, MA)

Babrauskas V (2002b) The cone calorimeter. In ‘The SFPE handbook of fire protection engineering’. 3rd edn. (Eds Society of Fire Protection Engineers) pp. 3-63–3-81. (National Fire Protection Association: Quincy, MA)

Babrauskas V (2003) ‘Ignition handbook.’ (Fire Science Publishers: Issaquah, WA)

Barbour MG, Burk JH, Pitts WD (1980) ‘Terrestrial plant ecology.’ (Benjamin/Cummings Publishing Company: Menlo Park, CA)

Behm AL, Duryea ML, Long AJ , Zipperer WC (2004) Flammability of native understory species in pine flatwood and hardwood hammock ecosystems and implications for the wildland–urban interface. International Journal of Wildland Fire  13, 355–365.
| Crossref | GoogleScholarGoogle Scholar | Burgan RE (1978) ‘Modeling live fuel moisture in the 1978 National Fire Danger Rating System.’ USDA Forest Service Research Paper INT-226. (Ogden, UT)

Burgan RE , Susott RA (1991) Influence of sample processing techniques and seasonal variation on quantities of volatile compounds of gallberry, saw-palmetto and wax myrtle. International Journal of Wildland Fire  1, 57–62.
Delabraze P, Valette J-C (1981) The use of fire in silviculture. In ‘Proceedings of the symposium on dynamics and management of Mediterranean-type ecosystems’. 22–26 June 1981, San Diego, CA. USDA-Forest Service General Technical Report PSW-58. (Technical coordinators CE Conrad, WC Oechel) pp. 475–482. (Berkeley, CA)

Dietenberger M (2001) Update for combustion properties of wood components. In ‘Fire and Materials 2001, 7th International Conference, 22–24 January 2001, Fisherman’s Wharf, San Francisco, USA’. pp. 159–171. (Interscience Communications: London)

Dietenberger MA, White RH (2001) Reaction-to-fire testing and modeling for wood products. In ‘12th annual BCC conference on flame retardancy’. pp. 54–69. (Business Communications: Norwalk, CT)

Dimitrakopoulos AP (2001) A statistical classification of Mediterranean species based on their flammability components. International Journal of Wildland Fire  10, 113–118.
| Crossref | GoogleScholarGoogle Scholar | Drysdale DC (1985) ‘An introduction to fire dynamics.’ (John Wiley and Sons: Chichester)

Etlinger MG , Beall FC (2004) Development of a laboratory protocol for fire performance of landscape plants. International Journal of Wildland Fire  13, 479–488.
| Crossref | GoogleScholarGoogle Scholar | Janssens M (2002) Calorimetry. In ‘The SFPE handbook of fire protection engineering’. 3rd edn. (Eds Society of Fire Protection Engineers) pp. 3-38–3-62. (National Fire Protection Association: Quincy, MA)

Liodakis S, Bakirtzis D , Lois E (2002) TG and autoignition studies on forest fuels. Journal of Thermal Analysis and Calorimetry  69, 519–528.
| Crossref | GoogleScholarGoogle Scholar | Lubin DM, Shelly JR (Eds) (1997) ‘Defensible space landscaping in the urban/wildland interface: a compilation of fire performance ratings of residential landscape plants’. Internal Report No. 36.01.137. (University of California Forest Products Laboratory: Richmond, CA)

Mak EHT (1988) Measuring foliar flammability with the limiting oxygen index method. Forest Science  34, 523–529.
Nord EC, Green LR (1977) ‘Low-volume and slow burning vegetation for planting on clearings in California chaparral.’ USDA Forest Service Research Paper PSW-124. (Berkeley, CA)

Owens MK, Lin C-D, Taylor CA , Whisenant SG (1998) Seasonal patterns of plant flammability and monoterpenoid content in Juniperus ashei. Journal of Chemical Ecology  24, 2115–2129.
| Crossref | GoogleScholarGoogle Scholar | Philpot CW (1969) ‘Seasonal changes in heat content and ether extractive content of chamise.’ USDA Forest Service Research Paper INT-61. (Ogden, UT)

Philpot CW, Mutch RW (1968) ‘Flammability of herbicide-treated guava foliage.’ USDA Forest Service Research Paper INT-54. (Ogden, UT)

Radtke K (1978) ‘Wildland plantings and urban forestry: native and exotic 1911–1977.’ (Los Angeles County Department Forester and Fire Warden, Forestry Division: Los Angeles, CA)

Rothermel RC, Anderson HE (1966) ‘Fire spread characteristics determined in the laboratory.’ USDA Forest Service Research Paper INT-30. (Ogden, UT)

Rundel PW , Parsons DJ (1979) Structural changes in chamise (Adenostoma fasciculatum) along a fire-induced age gradient. Journal of Range Management  32, 462–466.
UCFPL (2001) ‘Introduction to the I-zone.’ (University of California Forest Products Laboratory: Richmond, CA) Available at http://nature.berkeley.edu/~fbeall/FireMit/izone.html [Verified 8 August 2005]

Urbas J (2005) Effects of retainer frame, irradiance level and specimen thickness on cone calorimeter test results. Fire and Materials  29, 1–13.
| Crossref | GoogleScholarGoogle Scholar | Weise DR, Hartford RA, Mahaffey L (1998) Assessing live fuel moisture for fire management applications. In ‘20th Tall Timbers Fire Ecology Conference’. Boise, ID. (Eds TL Pruden, LA Brennan) pp. 49–55. (Tall Timbers Research Station: Tallahassee, FL)

Weise DR, Zhou Z, Sun L , Mahalingam S (2005) Fire spread in chaparral: go or no-go. International Journal of Wildland Fire  14, 99–106.
| Crossref | GoogleScholarGoogle Scholar | White RH, Weise DR, Frommer S (1996) Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. In ‘21st International Conference on Fire Safety’. January 1996, Clarion Hotel, San Francisco International Airport, Millbrae, California. pp. 256–265. (Product Safety Corporation: Sissonville, WV)

White RH, DeMars D, Bishops M (1997) Flammability of Christmas trees and other vegetation. In ‘Proceedings of 24th International Conference on Fire Safety’. pp. 99–110. (Product Safety Corporation: Sissonville, WV)

White RH, Weise DR, Mackes K, Dibble AC (2002) Cone calorimeter testing of vegetation: an update. In ‘35th International Conference on Fire Safety’, July 2002, Ramada Plaza Hotel and Conference Center, Columbus, Ohio. pp. 1–12. (Columbus, OH)




* This manuscript was produced by a U.S. Government employee using U.S. Government funds, is not subject to copyright laws and is in the public domain.

† The use of trade names is provided for information only and does not constitute endorsement by the U.S. Department of Agriculture.