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• 1. [Article] Wood Pole Maintenance Manual: 2012 Edition

  Morrell, Jeffrey J. 2012. Wood Pole Maintenance Manual: 2012 Edition. Research Contribution 51, Forest Research Laboratory, Oregon State University, Corvallis. The specification, inspection, ...

  Citation × Citation Citation Abstract Copy Title: Wood Pole Maintenance Manual: 2012 Edition Author: Morrell, Jeffrey J. Morrell, Jeffrey J. 2012. Wood Pole Maintenance Manual: 2012 Edition. Research Contribution 51, Forest Research Laboratory, Oregon State University, Corvallis. The specification, inspection, and remedial treatment of utility poles are addressed. Included are discussions of enhancing specifications for improved performance, techniques for detecting decay and other defects, and chemical treatments available for arresting decay of poles in service. Title: Wood Pole Maintenance Manual: 2012 Edition Author: Morrell, Jeffrey J. Morrell, Jeffrey J. 2012. Wood Pole Maintenance Manual: 2012 Edition. Research Contribution 51, Forest Research Laboratory, Oregon State University, Corvallis. The specification, inspection, and remedial treatment of utility poles are addressed. Included are discussions of enhancing specifications for improved performance, techniques for detecting decay and other defects, and chemical treatments available for arresting decay of poles in service. Close

• 2. [Article] Decay resistance of saltwater-exposed Douglas-fir piles

  Wood that is submerged in fresh water for long periods has increased permeability and other changed properties. Wood that is submerged in salt water may absorb considerable quantities of salts, which may ...

  Citation × Citation Citation Abstract Copy Title: Decay resistance of saltwater-exposed Douglas-fir piles Author: Freitag, Camille M., Morrell, Jeffrey J., Schneider, Philip F. Wood that is submerged in fresh water for long periods has increased permeability and other changed properties. Wood that is submerged in salt water may absorb considerable quantities of salts, which may render the wood resistant to microbial colonization. In this report, we describe decay tests on Douglas-fir sapwood and heartwood after long-term exposure in the Great Salt Lake of Utah. This wood was generally resistant to fungal attack, but was susceptible to leaching. Scanning electron microscopic examination revealed that salt crystals in the wood were primarily sodium chloride, which was readily removed in a leaching procedure. Decay resistance attributed to saltwater exposure declined with prolonged leaching. Title: Decay resistance of saltwater-exposed Douglas-fir piles Author: Freitag, Camille M., Morrell, Jeffrey J., Schneider, Philip F. Wood that is submerged in fresh water for long periods has increased permeability and other changed properties. Wood that is submerged in salt water may absorb considerable quantities of salts, which may render the wood resistant to microbial colonization. In this report, we describe decay tests on Douglas-fir sapwood and heartwood after long-term exposure in the Great Salt Lake of Utah. This wood was generally resistant to fungal attack, but was susceptible to leaching. Scanning electron microscopic examination revealed that salt crystals in the wood were primarily sodium chloride, which was readily removed in a leaching procedure. Decay resistance attributed to saltwater exposure declined with prolonged leaching. Close

• 3. [Article] Relationship between incipient decay, strength, and chemical composition of Douglas-fir heartwood

  A new laboratory technique to simulate the initiation of wood decay and to assess the effects of incipient decay on material properties is described. Douglas-fir heartwood specimens were exposed to brown-rot ...

  Citation × Citation Citation Abstract Copy Title: Relationship between incipient decay, strength, and chemical composition of Douglas-fir heartwood Author: Morrell, Jeffrey J., Winandy, Jerrold E. A new laboratory technique to simulate the initiation of wood decay and to assess the effects of incipient decay on material properties is described. Douglas-fir heartwood specimens were exposed to brown-rot (Postia placenta and Gloeophyllum trabeum) fungi for various periods. Bendlng properties were determined by nondestructive and destructive tests, and chemical composition of specimens was analyzed. Weight losses of 1 to 18% were linearly related to strength losses of 5 to 70%. Wood strength loss by brown-rot fungi was also closely related to degradation of hemi-cellulosic components. Hemicellulose sidechains, such as arabinose and galactose, were degraded in the earliest stages of decay; main-chain hemicellulose carbohydrates, such as mannose and xylose, were degraded in the later stages. Changes in glucose content, a measure of residual cellulose, were minimal. Our technique was effective for establishing and assessing brown-rot decay. Title: Relationship between incipient decay, strength, and chemical composition of Douglas-fir heartwood Author: Morrell, Jeffrey J., Winandy, Jerrold E. A new laboratory technique to simulate the initiation of wood decay and to assess the effects of incipient decay on material properties is described. Douglas-fir heartwood specimens were exposed to brown-rot (Postia placenta and Gloeophyllum trabeum) fungi for various periods. Bendlng properties were determined by nondestructive and destructive tests, and chemical composition of specimens was analyzed. Weight losses of 1 to 18% were linearly related to strength losses of 5 to 70%. Wood strength loss by brown-rot fungi was also closely related to degradation of hemi-cellulosic components. Hemicellulose sidechains, such as arabinose and galactose, were degraded in the earliest stages of decay; main-chain hemicellulose carbohydrates, such as mannose and xylose, were degraded in the later stages. Changes in glucose content, a measure of residual cellulose, were minimal. Our technique was effective for establishing and assessing brown-rot decay. Close

• 4. [Article] Effects of environmental factors on decay rates of selected white- and brown-rot fungi

  This is the publisher’s final pdf. The published article is copyrighted by the Society of Wood Science and Technology and can be found at: http://www.swst.org/wfs/journal.html. The author has paid this ...

  Citation × Citation Citation Abstract Copy Title: Effects of environmental factors on decay rates of selected white- and brown-rot fungi Author: Morrell, Jeffrey J., Gonzalez, June Mitsuhashi This is the publisher’s final pdf. The published article is copyrighted by the Society of Wood Science and Technology and can be found at: http://www.swst.org/wfs/journal.html. The author has paid this publisher's Open Access fee. Title: Effects of environmental factors on decay rates of selected white- and brown-rot fungi Author: Morrell, Jeffrey J., Gonzalez, June Mitsuhashi This is the publisher’s final pdf. The published article is copyrighted by the Society of Wood Science and Technology and can be found at: http://www.swst.org/wfs/journal.html. The author has paid this publisher's Open Access fee. Close