Download or read book Portland Harbor Predredge and Disposal Study written by Theodore H. Blahm and published by . This book was released on 1979 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Portland Harbor Maintenance Dredging written by and published by . This book was released on 1979 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Portland Harbor Dredging and Columbia River In water Disposal Water Quality Investigations written by United States. Army. Corps of Engineers. Portland District and published by . This book was released on 1979 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compendium of Current Marine Studies in the Pacific Northwest written by and published by . This book was released on 1980 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dredging in Portland Harbor written by and published by . This book was released on 1979 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wilmington Harbor Federal Navigation Project Dredged Material Disposal Area Wilmington written by and published by . This book was released on 1985 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Northwest Science written by and published by . This book was released on 1997 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Construction of Prestressed Concrete Structures written by Ben C. Gerwick, Jr. and published by John Wiley & Sons. This book was released on 1997-02-13 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die zweite Auflage dieses Klassikers - jetzt als Paperback - bietet Profis auf diesem Gebiet eine aktuelle und kompetente Präsentation der Technologie der Vorbelastung von Stahlbeton. Grundlegende Techniken, Materialien und Systeme werden behandelt und vielfältige Anwendungen - Gebäude, Brücken, Bohrplattformen, Straßen, Rollbahnen, Rohrleitungen - erläutert.
Download or read book Lake and Reservoir Restoration written by G. Dennis Cooke and published by Elsevier. This book was released on 2013-10-22 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lake and Reservoir Restoration deals with the eutrophication process and the methods to protect, restore, and manage lakes and reservoirs. The most common in-lake techniques or procedures, plus nutrient diversion, are reviewed with regard to their scientific basis, methods of application, known effectiveness, feasibility, drawbacks, and costs. Areas for further research and development are also highlighted. This book is comprised of 16 chapters organized into four sections. After an introduction to the theory of the problem and the restoration technique, the discussion turns to the various restoration methods such as those used for physical and chemical control of nutrients. Diversion and advanced waste treatment, hypolimnetic withdrawal, and dilution and flushing are considered along with phosphorus precipitation and inactivation, sediment oxidation, sediment removal, and hypolimnetic aeration. Case studies and success stories are presented and the costs and potential negative impacts of the methods are examined. The following chapters focus on methods to control plant biomass, including artificial circulation, water-level drawdown, harvesting, biological control, and surface and sediment covers. A chapter on liming acidified lakes concludes this text. This monograph will be useful to professional limnologists and engineers, on-site lake or reservoir managers, and those who are interested in learning about the problems and management of lakes and reservoirs.
Download or read book Sediment Dredging at Superfund Megasites written by National Research Council and published by National Academies Press. This book was released on 2007-10-30 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some of the nation's estuaries, lakes and other water bodies contain contaminated sediments that can adversely affect fish and wildlife and may then find their way into people's diets. Dredging is one of the few options available for attempting to clean up contaminated sediments, but it can uncover and re-suspend buried contaminants, creating additional exposures for wildlife and people. At the request of Congress, EPA asked the National Research Council (NRC) to evaluate dredging as a cleanup technique. The book finds that, based on a review of available evidence, dredging's ability to decrease environmental and health risks is still an open question. Analysis of pre-dredging and post-dredging at about 20 sites found a wide range of outcomes in terms of surface sediment concentrations of contaminants: some sites showed increases, some no change, and some decreases in concentrations. Evaluating the potential long-term benefits of dredging will require that the U.S. Environmental Protection Agency step up monitoring activities before, during and after individual cleanups to determine whether it is working there and what combinations of techniques are most effective.
Download or read book Sedimentation Control to Reduce Maintenance Dredging of Navigational Facilities in Estuaries written by National Research Council and published by National Academies Press. This book was released on 1987-02-01 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Engineering Handbook written by Wai-Fah Chen and published by CRC Press. This book was released on 2019-09-11 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 1999: The Bridge Engineering Handbook is a unique, comprehensive, and state-of-the-art reference work and resource book covering the major areas of bridge engineering with the theme "bridge to the 21st century."
Download or read book Waterfront Facilities Inspection and Assessment written by Waterfront Inspection Task Committee and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: MOP 130 provides engineers with guidelines and tools for inspecting and evaluating the condition of waterfront structures located in seawater and freshwater environments.
Download or read book Slurry Transport Using Centrifugal Pumps written by K. C. Wilson and published by Springer Science & Business Media. This book was released on 2008-03-28 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1,1 Applications of Slurry Transport Vast tonnages are pumped every year in the form of solid-liquid mixtures, known as slurries. The application which involves the largest quantities is the dredging industry, continually maintaining navigation in harbours and rivers, altering coastlines and winning material for landfill and construction purposes. As a single dredge may be required to maintain a throughput of 7000 tonnes of slurry per hour or more, very large centrifugal pumps are used. Figures 1-1 and 1-2 show, respectively, an exterior view of this type of pump, and a view of a large dredge-pump impeller (Addie & Helmley, 1989). The manufacture of fertiliser is another process involving massive slur- transport operations. Li Florida, phosphate matrix is recovered by huge draglines in open-pit mining operations. It is then slurried, and pumped to the wash plants through pipelines with a typical length of about 10 kilometres. Each year some 34 million tonnes of matrix are transported in this manner. This industry employs centrifugal pumps that are generally smaller than those used in large dredges, but impeller diameters up to 1. 4 m are common, and drive capacity is often in excess of 1000 kW. The transport distance is typically longer than for dredging applications, and Chapter 1 Figure LI. Testing a dredge pump at the GIW Hydraulic Laboratory Figure 1. 2. Impeller for large dredge pump 1. Introduction 3 hence a series of pumping stations is often used. Figure 1-3 shows a boost- pump installation in a phosphate pipeline.
Download or read book Owens Lake Soda Ash Company Soda Ash Mining and Processing Project written by and published by . This book was released on 1994 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dredging Coastal Ports written by National Research Council and published by National Academies Press. This book was released on 1985-02-01 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Are the nation's ports adequate for our present and future needs? This volume points out that no significant new deep-water construction has occurred for a decade, and provides the information and analysis needed to goad the ports and the federal government into action. The book asks three questions: Is additional port construction and maintenance dredging needed now or over the next 20 years? What would prevent dredging if it is needed? What alternatives could make additional dredging possible? The book identifies several problems in dredging ports, including the long interval between a decision to deepen a port and the time the alterations are complete. The United States needs to speed port construction to meet changing needs, and the committee recommends that we prepare for future needs by dredging now.
Download or read book Annual Report FY of the Chief of Engineers on Civil Works Activities written by United States. Army. Corps of Engineers and published by . This book was released on 1985 with total page 1316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
