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Creator:: Winandy, Jerrold E. and Morrell, Jeffrey J.
Abstract:: 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...
Resource Type:: Article
Full Text:: COMPOSITION OF DOUGLAS-FIR HEARTWOOD Jerrold E. Winandy Research Wood Scientist USDA Forest Senice

Creator:: Winandy, Jerrold E. and Morrell, Jeffrey J.
Abstract:: This report describes the relationship of incising-induced strength loss in bending as a function of preservative treatment and incising pattern, density, and depth of penetration for various machine stress-rated (MSR) grades of full-size 2 by 4 Douglas-fir, Hem-Fir, and Spruce-Pine-Fir (South) dimension lumber. This study may represent a worst-case "incising...
Resource Type:: Article
Full Text:: ,ATIONSHIPS BETWEEN INCISION DENSITY AND DEPTH, SPECIES, AND MSR GRADE Jerrold E. Winandy USDA Forest

Creator:: Morrell, Jeffrey J., Gupta, Rakesh, Winandy, Jerrold E., and Riyanto, Djoko S.
Abstract:: This study evaluated the effects of pretreatment incising of dry lumber and preservative treatment on the shear strength of 1980 pieces of 2 X 4 dimension lumber (nominal 50 mm X 100 mm X 3.6 m long). Three species groups (Douglas-fir, Hem-Fir. and Spruce-Pine-Fir-South) and two commercially produced machine-stress-rated grades...
Resource Type:: Article
Full Text:: Department of Forest Products Oregon State University Corvallis, OR 97331 Jerrold E. Winandy Research

Creator:: Morrell, Jeffrey J., Corden, M. E. (Malcolm E.), and Oregon State University. Department of Forest Products
Abstract:: Evaluations of previously established field trials indicate that chioropicrin, and Vorlex continue to provide protection to Douglas-fir poles, although the degree of protection is diminishing. Reapplication of Vapam 18 years after the initial application eliminated fungi which had recolonized the poles. Methylisothiocyanate (MITC) continues to protect Douglas-fir poles 12 years...
Resource Type:: Technical Report
Full Text:: , Associate Professor, Forest Products (Wood Preservation) Co-investiqators: Robert L. Krahmer, Professor

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