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Root anchorage and root morphology of Pinus radiata on a range of ripping treatments. New Zealand Journal of Forestry Science 9:294–315. Terho, M., and A.M. Hallaksela. 2005. Potential hazard characteristics of Tilia, Betula, and Acer trees removed in the Helsinki City area during 2001–2003. Urban Forestry and Urban Greening 3:113–120. Wood, C.J. 1995. Understanding wind forces on trees. In Coutts, M.P., and J. Grace (Eds.). Wind and Trees. Cambridge University Press, Cambridge, U.K. pp. 133–163. Brian Kane (corresponding author) University of Massachusetts–NRC 126 Holdsworth Hall Amherst, MA 01003, U.S.
[email protected] Peggi Clouston University of Massachusetts–NRC 127 Holdsworth Hall Amherst, MA 01003, U.S. Résumé. Les arbres ornementaux peuvent blesser les gens et causer des dommages aux propriétés lorsqu’ils tombent. En dépit du risque potentiel de litiges coûteux qui survient lorsque des arbres tombent et causent des dommages, il n’y a pas d’étude qui a pu déterminer de manière empirique la chute des arbres ornementaux. Trente-quatre ar- bres ornementaux de trois espèces du genre Acer ont été tirés jusqu’au point de rupture dans une propriété de banlieue du Massachusetts. La charge maximum et la distance de bris ont été employées pour calculer le moment de flexion maximum; le stress au point de rupture a été calculéà partir du moment de flexion et des dimensions de la section
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