Download or read book Earth Pressures on Conduits and Retaining Walls written by Donald Walker Quigley and published by . This book was released on 1978 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this investigation was to improve current design procedures for predicting earth pressures on rigid (concrete) conduits and retaining walls of the type frequently built by the U.S. Army Corps of Engineers. A comprehensive literature review was made to determine the generally accepted design methods (in addition to those of the Corps of Engineers) for predicting earth pressures on rigid conduits and retaining walls. Finite-element computer studies were performed to investigate the nature of earth pressures on buried conduits. Analytical comparisons were made of the many theories available for predicting earth pressures on retaining walls. Several suggested improvements to present Corps of Engineers design methods resulted from this study. The recommended procedures were compared with earth pressure data from several Corps of Engineer projects. In general, the suggested changes resulted in more accurate predictions of earth pressures on rigid conduits and retaining walls than are calculated by the present methods. This investigation has indicated several areas of inadequate present knowledge that could warrant further field and/or analytical study.

Download or read book Dams and Rivers written by Michael Collier and published by . This book was released on 1996 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Outlines the role of science in restoring or otherwise altering unwanted downstream effects of dams, including eroding river banks, changes in waterfowl habitat, threats to safe recreational use, and the loss of river sand bars, examining seven selected areas of the country -- the upper Salt River in central Arizona; the Snake River in Idaho, Oregon and Washington; the Rio Grande in New Mexico and Texas; the Chattahoochee River in Georgia; the Platte River in Wyoming, Colorado and Nebraska; the Green River in Utah; and the Colorado River in Arizona -- to focus on specific downstream effects of dams and the management issues related to their operation.

Download or read book The San Juan Chama Project written by Leah S. Glaser and published by . This book was released on 1998 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Commerce Business Daily written by and published by . This book was released on 1999 with total page 1606 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Watersheds and Land Use in New Mexico written by Peggy Sue Johnson and published by . This book was released on 2001 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tropical Storm Agnes June 1972 Basins of the Susquehanna and Potomac Rivers and Maryland Portions of Chesapeake Bay and Atlantic Coast written by Gannett Fleming Corddry and Carpenter and published by . This book was released on 1975 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impacts of Large Dams A Global Assessment written by Cecilia Tortajada and published by Springer Science & Business Media. This book was released on 2012-02-02 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most controversial issues of the water sector in recent years has been the impacts of large dams. Proponents have claimed that such structures are essential to meet the increasing water demands of the world and that their overall societal benefits far outweight the costs. In contrast, the opponents claim that social and environmental costs of large dams far exceed their benefits, and that the era of construction of large dams is over. A major reason as to why there is no consensus on the overall benefits of large dams is because objective, authoritative and comprehensive evaluations of their impacts, especially ten or more years after their construction, are conspicuous by their absence. This book debates impartially, comprehensively and objectively, the positive and negative impacts of large dams based on facts, figures and authoritative analyses. These in-depth case studies are expected to promote a healthy and balanced debate on the needs, impacts and relevance of large dams, with case studies from Africa, Asia, Australia, Europe and Latin America.

Download or read book Notes on Sedimentation Activities written by and published by . This book was released on 1994 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Mission in the Desert written by Michael E. Welsh and published by . This book was released on 1985 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Federal Guidelines for Dam Safety written by and published by . This book was released on 2004 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reservoir Sedimentation written by G.W. Annandale and published by Elsevier. This book was released on 1987-01-01 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on reservoir sedimentation in recent years has been aimed mainly at water resources projects in developing countries. These countries, especially in Africa, often have to cope with long droughts, flash floods and severe erosion problems. Large reservoir capacities are required to capture water provided by flash floods so as to ensure the supply of water in periods of drought. The problem arising however is that these floods, due to their tremendous stream power, carry enormous volumes of sediment which, due to the size of reservoirs, are virtually deposited in toto in the reservoir basin, leading to fast deterioration of a costly investment. Accurate forecasting of reservoir behaviour is therefore of the utmost importance.This book fills a gap in current literature by providing in one volume comprehensive coverage of techniques required to practically investigate the effects sediment deposition in reservoirs has on the viability of water resources projects. Current techniques for practically estimating sediment yield from catchments, estimating the volume of sediment expected to deposit in reservoirs, predicting sediment distribution and calculating scour downstream of reservoirs are evaluated and presented. The liberal use of diagrams and graphs to explain the various techniques enhances understanding and makes practical application simple. A major feature of the book is the application of stream power theory to explain the process of reservoir sedimentation and to develop four new methods for predicting sediment distribution in reservoirs.The book is primarily directed at practising engineers involved in the planning and design of water resources projects and at post-graduate students interested in this field of study.

Download or read book List of Cartographic Records of the Bureau of Indian Affairs Record Group 75 written by United States. National Archives and Records Service and published by . This book was released on 1954 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water in New Mexico written by Ira G. Clark and published by UNM Press. This book was released on 1987 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive reference on the state's most precious resource is now back in print.

Download or read book SCS National Engineering Handbook written by and published by . This book was released on 1984 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Research on Chaco Prehistory written by William James Judge and published by . This book was released on 1985 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book River Stability written by David L. Rosgen and published by . This book was released on 2008-01-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carson National Forest Plan written by and published by . This book was released on 1986 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: