DURABILITY OF HARDBOARD LAP SIDING... DETERMINATION OF PERFORMANCE CRITERIA... RESEARCH PAPER FPL-RP-622... U.S. DEPARTMENT OF AGRICULTURE.
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Published: 2005*
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Published: 2005*
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DOWNLOAD EBOOKAuthor: Charles R. Boardman
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Published: 2013
Total Pages: 25
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Published: 2000
Total Pages: 44
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DOWNLOAD EBOOKBecause of performance problems with hardboard siding in southern Florida, the U.S. Department of Housing and Urban Development (HUD) proposed a local standard requiring prefinishing of siding and priming of all siding surfaces, including the back. However, the effectiveness of these practices was questioned. To determine if back-priming or factory finishing improves durability and performance of hardboard siding, we installed factory-finished and factory-primed siding on two buildings in southern Florida. The buildings were identical except that one had gutters and no overhangs and the other had overhangs and no gutters. Half the siding was back-primed and half was not. Moisture content, temperature, and air pressure difference across the siding were continuously monitored for 2 years. Condition and thickness of siding boards were recorded every 3 months. After removal from the buildings, siding was inspected and final moisture contents were determined. The siding was in excellent condition after about 2Â years of outside exposure. There was no evidence that back-priming the siding reduced its in-service moisture content. Whether the siding was from the overhang building or the guttered building did not seem to make a difference, but inspection of the windows and final moisture contents of the trim strongly suggested that overhangs provided additional protection on the gable ends (gutters were only present on the sidewalls).
Author: Roger M. Rowell
Publisher: CRC Press
Published: 2012-09-06
Total Pages: 707
ISBN-13: 1439853800
DOWNLOAD EBOOKWood has played a major role throughout human history. Strong and versatile, the earliest humans used wood to make shelters, cook food, construct tools, build boats, and make weapons. Recently, scientists, politicians, and economists have renewed their interest in wood because of its unique properties, aesthetics, availability, abundance, and perhaps most important of all, its renewability. However, wood will not reach its highest use potential until we fully describe it, understand the mechanisms that control its performance properties, and, finally, are able to manipulate those properties to give us the desired performance we seek. The Handbook of Wood Chemistry and Wood Composites analyzes the chemical composition and physical properties of wood cellulose and its response to natural processes of degradation. It describes safe and effective chemical modifications to strengthen wood against biological, chemical, and mechanical degradation without using toxic, leachable, or corrosive chemicals. Expert researchers provide insightful analyses of the types of chemical modifications applied to polymer cell walls in wood. They emphasize the mechanisms of reaction involved and resulting changes in performance properties including modifications that increase water repellency, fire retardancy, and resistance to ultraviolet light, heat, moisture, mold, and other biological organisms. The text also explores modifications that increase mechanical strength, such as lumen fill, monomer polymer penetration, and plasticization. The Handbook of Wood Chemistry and Wood Composites concludes with the latest applications, such as adhesives, geotextiles, and sorbents, and future trends in the use of wood-based composites in terms of sustainable agriculture, biodegradability and recycling, and economics. Incorporating decades of teaching experience, the editor of this handbook is well-attuned to educational demands as well as industry standards and research trends.
Author: Charles G. Carll
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Published: 2013
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DOWNLOAD EBOOKAuthor: Charles Carll
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Published: 1997
Total Pages: 12
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Published: 1994
Total Pages: 48
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DOWNLOAD EBOOKAuthor: Charles Carll
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Published: 2000
Total Pages: 36
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DOWNLOAD EBOOKAuthor: Robert K. Stern
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Published: 1979
Total Pages: 12
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DOWNLOAD EBOOKThis report compares the use of medium-density hardboard with red oak lumber for reusable shipping pallet construction. If practicable, use of hardboard for this purpose would help to establish the utilization of low-grade wood waste for present and future pallet construction. The work indicated that for 9-block, 4-way entry pallets, a 1-inch top deck thickness is needed to achieve comparable performance with lumber pallets. Also, pallets of this style and having 1-inch-thick hardboard decks apppear to be equal to, or better than, all-lumber pallets for use in mechanical handling and automatic palletizing systems-i.e., where pallet dimensional stability is necessary for smooth operation of the system. This is the first of three studies being conducted to determine the most effective and efficient hardboard pallet design. The results should be especially relevant to anyone manufacturing, procuring, or using wood pallets at the present time. (Author).