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Guideline For Nondestructive Evaluation Of Unknown Subsurface Bridge Foundation Depths
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Book Synopsis Guideline for Nondestructive Evaluation of Unknown Subsurface Bridge Foundation Depths by : Olson Engineering Inc
Download or read book Guideline for Nondestructive Evaluation of Unknown Subsurface Bridge Foundation Depths written by Olson Engineering Inc and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geotechnical Engineering Notebook by : U. S. Department Of Transportation
Download or read book Geotechnical Engineering Notebook written by U. S. Department Of Transportation and published by . This book was released on 2008-08-27 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Purpose: To provide interim information on available NDT methods for assessing unknown bridge foundations.Background: The NCHRP Project 21-5 involves a study of various types of NDT equipment which could be used in subsurface investigation of unknown bridge foundations. At this stage of the research, the general aspects of several types of NDT equipment have been assessed for applicability in the unknown bridge foundation area. Although no definite conclusions can yet be reached on the reliability of these NDT methods in all situations, enough data has been collected to provide interim information to highway agencies on the general aspects of these methods.
Book Synopsis Evaluation of Resistivity Imaging (RI) Method for Determining Unknown Deep Foundation Depth by : Mohammad Sadik Khan
Download or read book Evaluation of Resistivity Imaging (RI) Method for Determining Unknown Deep Foundation Depth written by Mohammad Sadik Khan and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: There are approximately 580,000 highway bridges in the National Bridge inventory and 104,000 of these bridges are estimated to have unknown foundations type and/or depth. Determining unknown foundation length and type of bridge foundation is becoming an important issue for State DOTs to ensure the safety of the bridge. There are several methods available to determine unknown foundation depth based on specific site conditions and type of foundation to be tested. Resistivity Imaging (RI) is a non destructive method to investigate the subsurface condition. The objective of current study was to determine unknown bridge foundation depth of three bridges at North Texas using RI method. Two of the investigated bridges were supported by driven steel H-pile and the other bridge had drill shaft as foundation. Based on RI results, unknown foundation depth were determined from the variation of resistivity below the foundation. Parallel Seismic (PS) and Sonic Echo (SE) method were also utilized for one bridge site supported by steel H pile to verify the depth determined by RI method. PS method was performed in two casing backfilled with sand and cement grout. The investigated unknown bridge foundation depths using RI method were compared with the actual foundation depth. The determined unknown foundation depths from RI method were found very close to actual foundation depth for two steel H-pile sites. However, no significant variation of resistivity was observed below the foundation of third bridge supported by drill shaft and the determined foundation depth for third bridge site did not match the actual foundation depth. PS method also predicted the depth of the foundation very close to actual foundation depth. However, the SE test was determined to be not suitable for determining the unknown steel H-pile foundation depth.
Book Synopsis Handbook of Scour Countermeasures Designs by : Anil Kumar Agrawal
Download or read book Handbook of Scour Countermeasures Designs written by Anil Kumar Agrawal and published by . This book was released on 2007 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Non-Destructive Testing of Subsurface Infrastructure Using Induced Polarization and Electrical Resistivity Imaging by : Stacey Elizabeth Tucker
Download or read book Non-Destructive Testing of Subsurface Infrastructure Using Induced Polarization and Electrical Resistivity Imaging written by Stacey Elizabeth Tucker and published by . This book was released on 2013 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: As of September 2007, there were over 67,000 U.S. bridges in the National Bridge Inventory classified as having unknown foundations. The bridges spanning rivers are of critical importance due to the risks of potential scour. In fact, over half of all bridge collapses are due to scour. Not only are these failures costly, they can be deadly for the traveling public. On April 5, 1987, ten people were killed in New York when a pier collapsed on the Schoharie Creek Bridge causing two spans of the deck to fall into the creek. Several other fatal collapses have occurred since the Schoharie Creek Bridge failure. Detecting scour is only part of the assessment that must take place to determine risk of failure and knowing the foundation depth is a critical component of the assessment. While this issue is not new, current techniques are typically invasive or costly. This research explores the feasibility and effectiveness of induced polarization (IP) and electrical resistivity imaging (ERI), near surface geophysical methods, for determining the depth of unknown foundations. In this work, forward models are created to ascertain the effects of the bridge layout on data quality such as varying depths and the impact of adjacent foundations on the foundation in question. Next, an experimental study is conducted at a National Geotechnical Experimentation Site (NGES) to further identify key parameters for the testing design and setup in order to obtain optimal surveys of bridge foundations. The conclusions of the forward modeling and NGES investigations are used to plan the field surveys on four bridges with known foundations. The outcomes of the four bridges show that IP and ERI can be used in concert with one another to estimate the type and depth of bridge foundations. The results of the field surveys are used to create a probability of non-exceedance curve for future predictions of unknown bridge foundations using the methods described in this research. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151176
Book Synopsis Evaluation of Unknown Foundations by : Ronald W. Florkowski
Download or read book Evaluation of Unknown Foundations written by Ronald W. Florkowski and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: In recent years, bridge foundations have been in the spotlight throughout the nation. Bridges built over running water are susceptible to erosion or scour around their foundations. The reduction in load capacity to piers and abutments pose a safety risk to highway motorists. It has become necessary for engineers to examine and monitor these "scour critical" bridges. The difficulty arises with subsurface foundations of which very little is known about their construction. Hence, the methods applied to analyzing "Unknown Foundations" have become a necessary topic of research. This thesis explores a method to determine foundation lengths. Similar to Sonic Echo / Impulse Response, this procedure measures reflected shock waves sent through concrete pilings. The technique is non-destructive in nature and is performed near the surface of the foundation. The test is performed on the side of the exposed piling. Current methods are limited by the fact that the tops of most pilings are inaccessible due to pilecaps or beams. Often times, pilings are embedded in stiff soils, which have a dampening effect on the stress waves. This thesis employs a method of analysis that will overcome such limitations and provide engineers with another tool to determine subsurface foundation lengths.
Book Synopsis Stream Stability and Scour at Highway Bridges by : Everett V. Richardson
Download or read book Stream Stability and Scour at Highway Bridges written by Everett V. Richardson and published by ASCE Publications. This book was released on 1999-01-01 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sponsored by the Water Resources Engineering (Hydraulics) Divsion of ASCE. This collection contains 75 papers and 321 abstracts presented at conferences sponsored by the Water Resources Engineering (Hydraulics) Division of ASCE from 1991 through 1998. The collection contains many new and expanded versions of the original papers and is designed to assist the practitioner with the concepts in evaluating stream instability and scour at bridges. Topics include: history of bridge scour research; bridge scour determination; stream stability and geomorphology; construction scour; instrumentation for measuring and monitoring; field measurement; computer and physical modeling of bridge scour; scour at culverts; and economic and risk analysis. One important paper contains 384 field measurements of local scour at piers made by the U.S. Geological Survey.
Book Synopsis Advances in Transportation Geotechnics IV by : Erol Tutumluer
Download or read book Advances in Transportation Geotechnics IV written by Erol Tutumluer and published by Springer Nature. This book was released on 2021-09-05 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents selected papers presented during the 4th International Conference on Transportation Geotechnics. The papers address the geotechnical challenges in design, construction, maintenance, monitoring, and upgrading of roads, railways, airfields, and harbor facilities and other ground transportation infrastructure with the goal of providing safe, economic, environmental, reliable and sustainable infrastructures. This volume will be of interest to postgraduate students, academics, researchers, and consultants working in the field of civil and transport infrastructure.
Book Synopsis European Workshop on Structural Health Monitoring by : Piervincenzo Rizzo
Download or read book European Workshop on Structural Health Monitoring written by Piervincenzo Rizzo and published by Springer Nature. This book was released on 2021-01-10 with total page 969 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gathers the latest advances, innovations, and applications in the field of structural health monitoring (SHM) and more broadly in the fields of smart materials and intelligent systems. The volume covers highly diverse topics, including signal processing, smart sensors, autonomous systems, remote sensing and support, UAV platforms for SHM, Internet of Things, Industry 4.0, and SHM for civil structures and infrastructures. The contributions, which are published after a rigorous international peer-review process, highlight numerous exciting ideas that will spur novel research directions and foster multidisciplinary collaboration among different specialists. The contents of this volume reflect the outcomes of the activities of EWSHM (European Workshop on Structural Health Monitoring) in 2020.
Book Synopsis Determination of Unknown Subsurface Bridge Foundations by : Larry D. Olson
Download or read book Determination of Unknown Subsurface Bridge Foundations written by Larry D. Olson and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Application of P-wave Reflection Imaging to Unknown Bridge Foundations and Comparison with Other Non-Destructive Test Methods by : Behnoud Kermani
Download or read book Application of P-wave Reflection Imaging to Unknown Bridge Foundations and Comparison with Other Non-Destructive Test Methods written by Behnoud Kermani and published by . This book was released on 2013 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proper design of bridge structures requires an appreciation for the possible failure mechanisms that can develop over the lifetime of the bridge, many of which are related to natural hazards. For example, scour is one of the most common causes of bridge failures. Scour occurs due to the erosion of soil and sediment within a channel with flowing water. During a flood event, the extent of scour can be so great that it can destabilize an existing bridge structure. In order to evaluate the scour potential of a bridge, it is necessary to have information regarding the substructure, particularly the bridge foundations. However, as of 2011 there are more than 40,000 bridges across United States with unknown foundations. Generally for these bridges there are no design or as-built plans available to show the type, depth, geometry, or materials incorporated into the foundations. Several non-destructive testing (NDT) methods have been developed to evaluate these unknown foundations. The primary objective of this research is to identify the most current and widely used NDT methods for determining the embedment depth of unknown bridge foundations and to compare these methods to an ultrasonic P-wave reflection imaging system. The ultrasonic P-wave reflection system has tremendous potential to provide more information and address several short-comings of other NDT methods. A laboratory study was initiated to explore various aspects related to the P-wave system performance, in order to characterize the limitations of the system in evaluation of unknown foundations prior to deployment in field studies. Moreover, field testing was performed using the P-wave system and a number of the current NDT methods at two selected bridge foundations to allow comparison between the results.
Book Synopsis Flood Scour for Bridges and Highways by : Mohiuddin A. Khan
Download or read book Flood Scour for Bridges and Highways written by Mohiuddin A. Khan and published by McGraw Hill Professional. This book was released on 2015-02-05 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. Proven methods for preventing and mitigating bridge and highway flood scour Offering detailed guidelines on bridge scour countermeasures, this comprehensive resource provides a proactive strategy for the design and construction of bridges to prevent scour, as well as a reactive plan for post-flood disaster management. Topics discussed include erosion, causes of scour, AASHTO design codes, hydrology, hydraulics, scour analysis, inspection methods, and modern materials technology. Real-world case studies illustrate the concepts presented. The authoritative information in this practical guide will help you to develop more efficient and cost-effective design processes and bridge management systems for river bridges subjected to floods. Flood Scour for Bridges and Highways covers: Floods, scour problems, and mitigation River instability caused by flow obstructions Past failures and bridges vulnerable to failure Geotechnical and hydraulic issues at scour-critical rivers and bridges Hydrology, floods, and scour-critical bridges Estimating scour depths and selecting applicable countermeasures Inspections, ratings, and monitoring countermeasures FHWA, HEC-18, and HEC-23 scour countermeasures as remediation Innovative methods of flood control and disaster management
Book Synopsis Determination of Unknown Subsurface Bridge Foundations by : Larry D. Olson
Download or read book Determination of Unknown Subsurface Bridge Foundations written by Larry D. Olson and published by . This book was released on 1998 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Research Record written by and published by . This book was released on 1974 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Managing Water by : International Association for Hydraulic Research. Congress
Download or read book Managing Water written by International Association for Hydraulic Research. Congress and published by . This book was released on 1997 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt: This catalogue presents a complete survey of the surviving autographs of Handel's music--more than 7,500 leaves in the composer's hand written over a perod of nearly fifty years. Works and movements for which autographs survive are identified, and essential information about the physical characteristics are recoded, including the watermark type for each leaf of paper, the types of rastra employed, and the presence of pencil annotations. All watermark types are illustrated with full-size diagrams.
Book Synopsis Essays in Transportation Economics and Policy by : Jose A. Gomez-Ibanez
Download or read book Essays in Transportation Economics and Policy written by Jose A. Gomez-Ibanez and published by Brookings Institution Press. This book was released on 2011-01-01 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive survey of transportation economic policy pays homage to a classic work, Techniques of Transportation Planning, by renowned transportation scholar John R. Meyer. With contributions from leading economists in the field, it includes added emphasis on policy developments and analysis. The book covers the basic analytic methods used in transportation economics and policy analysis; focuses on the automobile, as both the mainstay of American transportation and the source of some of its most serious difficulties; covers key issues of urban public transportation; and analyzes the impact of regulation and deregulation on the U.S. airline, railroad, and trucking industries. In addition to the editors, the contributors are Alan A. Altshuler, Harvard University; Ronald R. Braeutigam, Northwestern University; Robert E. Gallamore, Union Pacific Railroad; Arnold M. Howitt, Harvard University; Gregory K. Ingram, The Wold Bank; John F. Kain, University of Texas at Dallas; Charles Lave, University of California, Irvine; Lester Lave, Carnegie Mellon University; Robert A. Leone, Boston University; Zhi Liu, The World Bank; Herbert Mohring, University of Minnesota; Steven A. Morrison, Northeastern University; Katherine M. O'Regan, Yale University; Don Pickrell, U.S. Department of Transportation; John M. Quigley, University of California, Berkeley; Ian Savage, Northwestern University; and Kenneth A. Small, University of California Irvine.
Book Synopsis Drilled Shafts by : Michael W. O'Neill
Download or read book Drilled Shafts written by Michael W. O'Neill and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
