Download or read book Prioritizing Bridge Structures for Underwater Inspections written by Daniel D. McGeehan and published by . This book was released on 1993 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade, there has been increasing national concern about the adequacy of underwater inspection of bridge substructures. A number of factors have contributed to this concern, in particular the collapse of several major spans, some of which led to loss of life. Substructure failures have been the cause of bridge collapses and the subject of at least five National Transportation Safety Board (NTSB) highway bridge investigations. In at least four instances, deficiencies in the substructure could have been identified by underwater inspection. During this project, 425 bridges in Virginia were identified as requiring underwater inspection. It was concluded that assessments of the type and extent of damage to structures below the waterline prior to inspection are highly inaccurate. Prioritizing bridges for inspections must be based on an established history of underwater inspections. Trends in the deterioration of underwater structures indicate several factors to be considered in developing a priority system for an underwater inspection program. These trends are described, and time intervals for the inspection of bridges with a previous inspection history are suggested.
Download or read book Bridge Inspection and Rehabilitation written by Parsons Brinckerhoff and published by John Wiley & Sons. This book was released on 1993-01-12 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than a third of America's bridges are considered substandard--either structurally deficient, functionally obsolete or both. Offers first-rate, practical guidance regarding the inspection and rehabilitation of aging bridge infrastructure including all elements involving structure, various materials and design types. Features seismic retrofit and coverage of environmental issues. Each chapter is written by an authority on the subject. Contains top-quality, detailed line illustrations plus photographs of actual rehab projects.
Download or read book Considerations for Administering Underwater Contracts written by Daniel D. McGeehan and published by . This book was released on 1984 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: State highway and transportation agencies are required to inspect all bridges on the public road system using guidelines established by AASHTO. Procedures for inspecting the superstructures are well known and the expertise to perform them is available within highway and transportation agencies. However, the need to inspect bridge structures in water too deep to allow evaluation from the surface presents most agencies with a difficult technical task. Many states have solved this problem by employing contractors to inspect such substructures. Since procedures for performing these inspections are not standardized, selection of the criteria to be used is left to the contractor. The objective of this study was to identify issues that should be considered when administering an underwater inspection program to be conducted by contractors. The issues include identifying and prioritizing structures for periodic inspection, establishing inspection procedures to be used, selecting a contractor, formatting the contract, and estimating contract costs.
Download or read book Bridge Safety written by United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Investigations and Oversight and published by . This book was released on 1991 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underwater Bridge Inspection Programs written by Daniel D. McGeehan and published by . This book was released on 1988 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Transportation Research Board workshop on Underwater Inspection Programs revealed surprising agreement among the representatives of federal and state agencies and underwater inspection professionals. The importance of complying with the federal inspection standards to examine all bridges in water at least every five years was emphasized. Advantages of effective underwater inspection programs include cost effectiveness, liability protection, and identification of factors contributing to bridge deterioration. Establishing a program requires an accurate inventory of bridges with underwater elements, a baseline inspection of all structures, and a prioritizing system for the bridge inspection sequence.
Download or read book Bridge Optimization written by Yun Lai Zhou and published by BoD – Books on Demand. This book was released on 2020-02-05 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a collection of several applications for condition monitoring and damage identification in bridge structures. Bridge structural condition monitoring is essential since it can provide early warning of potential defects in bridges, which may induce catastrophic accidents and result in huge economic loss. Such bridge condition monitoring relies on sensing techniques, especially advanced sensing techniques that can provide detailed information on bridge structures. Additionally, postprocessing systems can interpret the captured data and warn of any potential faults. This book will give students a thorough understanding of bridge condition monitoring.
Download or read book Remote Methods of Underwater Inspection of Bridge Structures written by W. R. Bath and published by . This book was released on 1999 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inspection and Management of Bridges with Fracture critical Details written by Robert J. Conner and published by Transportation Research Board. This book was released on 2005 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 354: Inspection and Management of Bridges with Fracture-Critical Details explores the inspection and maintenance of bridges with fracture-critical members (FCMs), as defined in the American Association of State Highway and Transportation Officials' Load and Resistance Factor Design (LRFD) Bridge Design Specifications. The report identifies gaps in literature related to the subject; determines practices and problems with how bridge owners define, identify, document, inspect, and manage bridges with fracture-critical details; and identifies specific research needs. Among the areas examined in the report are inspection frequencies and procedures; methods for calculating remaining fatigue life; qualification, availability, and training of inspectors; cost of inspection programs; instances where inspection programs prevented failures; retrofit techniques; fabrication methods and inspections; and experience with fracture-critical members fractures and problems details.
Download or read book The Development of Bridge Inspection Strategies Based on a Statistical Analysis at Deterioration in Underwater Structures written by Mark Deymond Fugler and published by . This book was released on 1994 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underwater Inspection of Bridges written by Thomas J. Collins and published by . This book was released on 1989 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remote Methods of Underwater Inspection of Bridge Structures Scholar s Choice Edition written by D Federal Highway Administration (Fhwa) and published by Scholar's Choice. This book was released on 2015-02-15 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book An Introduction to Bridge Inspection for Construction Managers written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2022-05-24 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for construction managers interested in inspection of bridges. Here is what is discussed: 1. INSPECTION TYPES AND INTERVALS, 2. INSPECTION PROCEDURES.
Download or read book Underwater Bridge Maintenance and Repair written by Ronald L. Purvis and published by . This book was released on 1994 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis on underwater bridge maintenance and repair will be of special interest to bridge maintenance engineers and others involved with repair of bridge elements located below the waterline and in the splash zone. Procedures for correctly assessing the problem and engineering the repair within the constraints of individual situations, including bridge scour considerations, are described. Protection, maintenance, and repair of concrete, masonry, steel, and timber bridge foundation elements are also addressed. This synthesis updates the maintenance and repair portion of NCHRP Synthesis 88: Underwater Inspection and Repair of Bridge Substructures. This report of the Transportation Research Board identifies and describes current practices and innovative repair techniques for problems associated with settlement, scour, and deterioration of underwater bridge elements. The synthesis considers various types of protection, maintenance, and repair work on bridge substructures, both underwater and in the splash zone, and includes techniques, and their effectiveness. Current research in the topic area and critical research needs are also identified. A limited bibliography is also provided.
Download or read book Risk Based Bridge Inspection Practices written by Rebecca S. Reising and published by . This book was released on 2014-12-15 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improving bridge safety, reliability, and the allocation of bridge inspection resources are the goals of the proposed risk-based bridge inspection practices. Currently, most bridges in the United States are inspected at a fixed calendar interval of 24 months, without regard to the condition of the bridge. Newer bridges with little or no damage are inspected with the same frequency as older, more deteriorated bridges thus creating inefficiency in the allocation of inspection resources.The proposed methodology incorporates reliability theory and expert elicitation from the Indiana Department of Transportation's Risk Assessment Panel, developed during this research, to rationally determine bridge inspection needs. Assessments are made based on the likelihood and consequence of failure for specific bridge components. The likelihood of failure is determined through attributes based on design, loading, and condition characteristics while the consequence of failure is based on expected structural capacity, public safety, and serviceability. By combining the expressions of likelihood and consequence for each component, an optimum inspection interval for the entire bridge can be determined through the use of risk matrices.The methodology was evaluated through case studies involving Indiana bridges. Over 30 years of historical inspection reports were utilized in the back-casting process to evaluate deterioration levels and assess the adequacy of the risk criteria. Results of the case studies conducted during the research indicated that the risk analysis procedures provided suitable inspection intervals ranging from 24 to 72 months for Indiana bridges.
Download or read book Bridge Maintenance Inspection and Evaluation written by and published by . This book was released on 1981 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underwater Bridge Inspection of Dekalb County written by Collins Engineers and published by . This book was released on 1990* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Underwater Inspection and Repair of Bridge Substructures written by H. C. Lamberton and published by Transportation Research Board National Research. This book was released on 1981-01-01 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
