Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 204 for “"lumber"”.
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Artificial lumber
Thesis (B.S.)--Michigan State College of Agriculture and Applied Science, 1931
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Fatigue cracking of lumber bandsaw blades
… gullet region of wide handsaw blades used in the lumber industry. This thesis presents both the theory and the experiment aspects of this research in terms of the tasks defined as follows. The current literature was reviewed to critically examine the current state-of-the-art in smooth and cracked …
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Pickering Lumber Company: Archival Processing Project
… by W.R. Pickering in 1894, the Pickering Lumber Company had lumber operations in Oklahoma, Texas, Louisiana, and California. The company practiced cut-and-run policy that dictated the relocation of lumber operations when the company exhausted its timber holdings. The Pickering Lumber …
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The design of lumber producing machinery
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1957
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The British Columbia softwood lumber industry and its economic effects on the Western United States lumber industry
Thesis (M.S.)--Michigan State University. Dept. of Forest Products, 1963
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Solar drying of green oak (Quercus spp.) lumber
… of a mixture of red and white oak 5/4 inch lumber during winter conditions in Blacksburg, Virginia. The solar kiln was of a semi-greenhouse type, having a capacity of 150 board feet and provided with an air circulating fan. Both the south facing vertical wall and the south facing sloping …
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Analysis of shear damage to southern pine lumber
… to other defects present in southern pine lumber. This was accomplished through two sawmill studies and two kiln cart surveys performed in different geographic locations. Visible indicators such as stump-pull that are used to determine shear damage extent are often misleading. Stump-pull, …
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Empirically derived dimensions of quality for softwood lumber
Quality perceptions of three major softwood lumber consumers: wood treaters, truss manufacturers, and home centers were investigated to determine their definition of softwood lumber quality. Data was gathered through a mail survey of buyers in each of the three groups. In total, 867 responses were …
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Two-dimensional separate-sided surface height profiling of lumber
… (two-dimensional) top and bottom surfaces of a lumber board. Each surface profile is independent of the other and free of data contamination caused by relative motions between the measured surface and sensors. Point scanners and line scanners simultaneously record 1-D and 2-D height data, …
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Time-Based Manufacturing System Design for Softwood Lumber Production
… involved a case study of a southern yellow pine lumber manufacturer. Value stream mapping was used to evaluate the current lead time for the lumber manufacturer as well as design future state systems. Current state evaluation discovered an average lead time of 35.3 days according to six months of …
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Assessment of Cross Laminated Timber Markets for Hardwood Lumber
… was to assess the potential of using hardwood lumber in CLT manufacturing. The goal was achieved by addressing four specific objectives. The first objective was to collect CLT manufacturers' perspectives for using hardwood lumber in the current manufacturing setup. The second objective was to …
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An Investigation into Attitudes towards Recycling CCA Treated Lumber
… decision intention to recover used CCA lumber. The purpose of this research was to determine the factors that affect recovery. This research proposes that a contractor's decision intention to recover is affected by evaluations, beliefs, subjective norms, and perceived barriers to …
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Simulating Optimal Part Yield from No. 3A Common Lumber
… low-grade material composing the annual hardwood lumber production in the U.S. is on the rise. As a result, finding markets for low-grade and low-value lumber has been identified as a top priority by researchers and industry associations. Computer simulation has been used by the manufacturing …
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Influence of lumber property correlations on roof truss reliability
… reliability. Also, research efforts to define lumber property correlations are summarized. Computer models were constructed to simulate the behavior of five common roof truss patterns. The patterns studied were the Fink, double W, triple W, triple W farm, and flat Howe trusses. Monte Carlo …
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Gripped end effect in tensile proof testing dimension lumber
… testing, given that the gripped ends of the lumber do not fully experience the proof stress during a tension proof test. First the middle portion of each 14-foot 2X6 No 2 KDIS Southern Pine lumber specimen was tension proof tested, as if the pieces were only 10 feet long. Then the pips of the …
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Optimization of edging and trimming operations for red oak lumber
… of edging and trimming operations for red oak lumber through computer-aided optimization. The main objective was to evaluate how lumber value recovered by actual hardwood operations compare with the maximum value obtainable through the optimization of edging and trimming. An optimization …
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Demand, supply and price of hardwood lumber: an econometric study
Historically, the quantity of hardwood lumber supplied and demanded has fluctuated from year to year while the price of hardwood lumber has trended with the wholesale price index. During the 1970's, production and usage of hardwood lumber trended downward while price increased by over 100 percent. …
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Developing an Evaluation Program for Lumber Drying Operations in Bolivia
… products have largely replaced logs and green lumber, and raw materials for wood products have shifted to lesser used species. Important investment has taken place in lumber drying capacity, which unfortunately was not always accompanied by sound drying practices. Several non-governmental …
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Dowel-laminated timber from waste lumber offcuts: Towards structural component circularity
… timber (DLT) slabs built up from waste lumber offcuts. A mechanical model for a segmented DLT system composed of geometrically heterogeneous offcuts is developed. Prototypes of this mass timber system are fabricated and tested to observe their failure behavior and to evaluate the …
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