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Creator:: King, David T., Sinha, Arijit, and Morrell, Jeffrey J.
Abstract:: Wood shear walls are the main lateral force-resisting system for wood-frame construction. Water intrusion and subsequent decay around connections can significantly impact shear wall behavior, but these problems are seldom studied. In this study, effects of water intrusion and fungal attack on shear wall capacity were examined using small-scale (610-...
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Full Text:: SHEAR WALLS David T. King Former Graduate Research Assistant E-mail: mrdtking@gmail.com Arijit Sinha

Creator:: Ye, Min and Morrell, Jeffrey J.
Abstract:: The potential for preservative migration from treated wood exposed in or above aquatic environments has become a major concern in some parts of the United States. Best management practices (BMP) were designed to decrease the potential environmental footprint of treated wood, but there are few studies assessing the efficacy of...
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Full Text:: COPPER MIGRATION FROM ALKALINE-COPPER-TREATED DOUGLAS-FIR LUMBER Min Ye Graduate Research Assistant E

Creator:: Scouse, Adam, Kamke, Frederick A., and Morrell, Jeffrey J.
Abstract:: The potential for using pretreatment with cinnamon leaf oil or juniper foliage oil to improve the durability of viscoelastic thermal compression (VTC)–treated hybrid poplar was explored in a field termite test and a laboratory mold test. The addition of oils prior to VTC processing had variable effects on resistance to...
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Full Text:: @oregonstate.edu, jeff.morrell@oregonstate.edu [corresponding author]). This paper was received for publication in

Creator:: Morrell, Jeffrey J., Sinha, Arijit, Clauson, Milo, and Love, Connie S.
Abstract:: Routine inspection of wood utility poles to detect internal decay involves drilling holes at or about the ground line. While these holes are useful for detecting internal decay, their presence raises concern among engineers about their potential effects on pole flexural properties. The effect of inspection holes on flexural properties...
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Full Text:: , Assistant Professor of Renewable Materials, Senior Faculty Research Assistant, and Senior Faculty Research

Creator:: Li, Shujun, Freitag, Camille M., Morrell, Jeffrey J., and Okabe, Toshihiro
Abstract:: The ability of natural and synthetic hinokitiol, as well as a water soluble derivative (hinokitiol sodium salt), to protect wood against fungal attack was examined. Synthetic and natural hinokitiol provided similar protection. All three materials exhibited similar antifungal activity against Aspergillus niger and Penicillium citrinum on yellow poplar wafers at...
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Full Text:: Institution, Aomori Prefectural Industrial Technology Research Center, Japan; * Corresponding author

Creator:: Maoz, Michal, Karchesy, Joseph J., and Morrell, Jeffrey J.
Abstract:: The ability of selected plant extracts from wood and foliage to inhibit mold regrowth on fungal colonized wood was evaluated on Douglas-fir sapwood. Most foliage extracts produced some inhibition of Graphium or Trichoderma species, but isolations of other fungi increased following treatment. Five out of eight wood extracts produced 50%...
Resource Type:: Article

Creator:: Wang, Yu, Chang, Jianmin, Morrell, Jeffrey J., Freitag, Camille M., and Karchesy, Joseph J.
Abstract:: Bacillus subtilis and essential oils have been explored separately for their ability to limit colonization by wood stain and mold fungi, but neither approach has been completely effective. One alternative strategy would be to combine the bacterial biocontrol with one or more natural products extracts. In this report, the ability...
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Full Text:: research was supported by a Specialized Research Fund for the Doctoral Program of China Universities

Creator:: Gonzalez, June Mitsuhashi and Morrell, Jeffrey J.
Abstract:: Assessing the impact of fungal decay in wood structures poses a major challenge for building inspectors. Although models have been developed to predict degradation rate of building components in varying climatic conditions, most are hampered by the lack of fundamental data on effects of fungal attack on engineering properties. Developing...
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Full Text:: of wood by basidiomycete fungi. Doc. no. IRG/WP 00-20200. Interna- tional Research Group on Wood

Creator:: Love, Connie S. and Morrell, Jeffrey J.
Abstract:: The effect of metal end plates on reducing checking of pentachlorophenol-treated Douglas-fir crossarms was evaluated over 13 wet–dry cycles. Check development was variable over the first three to four cycles, and then steadily increased for both plated and nonplated ends of arms; however, both the number of checks and the...
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Full Text:: authors are, respectively, Senior Faculty Research Assistant and Professor, Dept. of Wood Sci. and

Creator:: Long, Brady and Morrell, Jeffrey J.
Abstract:: Preservative treatments are required whenever glued laminated beams are exposed outdoors. Treatments can be either water-based systems applied to individual laminations prior to layup or organic solvent–borne systems applied after the beams are fabricated. Water-based systems are not recommended for posttreatment because of concerns over checking and the potential for...
Resource Type:: Article
Full Text:: , jeff.morrell@oregonstate.edu [cor- responding author]). This paper was received for publication in November

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