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Author: Jeffrey A. Ballard
Publisher: New Rochester Publishing
ISBN: 1941557228
Category : Fiction
Languages : en
Pages : 51
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Book Description
Author: Jeffrey A. Ballard
Publisher: New Rochester Publishing
ISBN: 1941557228
Category : Fiction
Languages : en
Pages : 51
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Book Description
Author: John H. Nixon
Publisher: Gulf Professional Publishing
ISBN: 9780884158851
Category : Science
Languages : en
Pages : 120
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Book Description
The book provides an comprehensive overview of the techniques available for the joining and repair of offshore structures. Nixon starts with joining systems that do not require welding and then explores the associated engineering systems needed for joining procedures. Topics include pipe handling, hyperbaric chamber design, and principal underwater welding techniques, including wet, one atmosphere, and hyperbaric. Nixon also includes a description of the effects of environmental pressure on the various hyperbaric welding processes. A complete guide to underwater welding, this book also discusses technologies that show promise in the laboratory, but are not currently in use. Nixon provides appendices describing the relevant diving technologies, basic oceanography, and the research methods used in the development of hyperbaric welding.
Author: United States. Congress. Senate. Committee on Environment and Public Works
Publisher:
ISBN:
Category : Law
Languages : en
Pages : 152
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Book Description
Author: S. H. Perry
Publisher:
ISBN: 9780118863629
Category : Incrustations
Languages : en
Pages : 54
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Book Description
Author: Ronald L. Purvis
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 66
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Book Description
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.
Author: David E. Vaughan
Publisher: J. Ross Publishing Incorporated
ISBN: 9781604278323
Category : Nature
Languages : en
Pages : 0
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Book Description
Active Coral Restoration: Techniques for a Changing Planet is a timely, comprehensive, ground-breaking volume that provides a foundational understanding of the current and emerging practices and technologies used for active coral reef restoration projects around the world. Edited by David Vaughan, this work contains contributed chapters written by someof the foremost authorities on coral reef restoration. It is a must have for all present and future practitioners of coral reef restoration, including research scientists, resource managers, aquarists, volunteers, students of marine science, and policy makers. KEY FEATURES: --Demonstrates new and emerging methods and technologies for active coral restoration, including fragmentation and micro-fragmentation, coral fusion and skinning, coral larvae capture and rearing, and assisted evolution for coral resistance and resilience --Offers strategies on how to set up land- and field-based coral nurseries as well as new emerging technologies such as pop up nurseries --Contains over 250 color figures and photographs to illustrate important concepts and procedures --Includes 11 relevant case studies from around the world to highlight key principles and success stories within restoration projects
Author: Jasper Graham-Jones
Publisher: Woodhead Publishing
ISBN: 0081002009
Category : Technology & Engineering
Languages : en
Pages : 361
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Book Description
The marine environment presents significant challenges for materials due to the potential for corrosion by salt water, extreme pressures when deeply submerged and high stresses arising from variable weather. Well-designed fibre-reinforced composites can perform effectively in the marine environment and are lightweight alternatives to metal components and more durable than wood. Marine Applications of Advanced Fibre-Reinforced Composites examines the technology, application and environmental considerations in choosing a fibre-reinforced composite system for use in marine structures. This book is divided into two parts. The chapters in Part One explore the manufacture, mechanical behavior and structural performance of marine composites, and also look at the testing of these composites and end of life environmental considerations. The chapters in Part Two then investigate the applications of marine composites, specifically for renewable energy devices, offshore oil and gas applications, rigging and sails. Underwater repair of marine composites is also reviewed. Comprehensively examines all aspects of fibre-reinforced marine composites, including the latest advances in design, manufacturing methods and performance Assesses the environmental impacts of using fibre-reinforced composites in marine environments, including end of life considerations Reviews advanced fibre-reinforced composites for renewable energy devices, rigging, sail textiles, sail shape optimisation and offshore oil and gas applications
Author: Federal Highway Administration
Publisher:
ISBN: 9781521174395
Category :
Languages : en
Pages : 121
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Book Description
This manual is intended to serve as a reference for design engineers, construction inspectors, resident engineers, inspection divers and other administrative and technical staff whose work tasks include the repair or rehabilitation of elements of bridges or similar structures located below water. The manual addresses a variety of design and construction issues that must be considered in determining the feasibility of, and selecting the repair or rehabilitation methodology, for underwater projects. This information can aid in developing cost effective and durable repair and rehabilitation designs. CHAPTER I - UNDERWATER REPAIR AND REHABILITATION OF BRIDGES AND STRUCTURES * CHAPTER II - MAINTENANCE * CHAPTER III - UNDERWATER REPAIR PLANNING DATA AND REPAIR OPTION ANALYSIS. * CHAPTER IV - MARINE CONSTRUCTION MATERIALS * CHAPTER V - UNDERWATER REPAIRS * CHAPTER VI - EQUIPMENT FOR UNDERWATER REPAIR * CHAPTER VII - PIER REPAIRS * CHAPTER VIII - PILE and SHEET PILE REPAIRS * CHAPTER IX - CATHODIC PROTECTION FOR SUBSTRUCTURES * CHAPTER X - CONTRACTING AND CONSTRUCTION INSPECTION. CHAPTER 1 UNDERWATER REPAIR AND REHABILITATION OF BRIDGES AND STRUCTURES * SECTION 1. INTRODUCTION * 1-1.1 Purpose * 1-1.2 Background * 1- 1.3 Scope * CHAPTER II MAINTENANCE * SECTION 1. INTRODUCTION * 2- 1.1 Marine Environment Factors * 2-1.2 Deterioration Models * 2-1.3 Preventive Maintenance Activities * 2- 1.4 Performance Monitoring * CHAPTER III UNDERWATER REPAIR PLANNING DATA AND REPAIR OPTION ANALYSIS. * SECTION 1. INTRODUCTION * SECTION 2. CONDITION ASSESSMENT * 3- 2.1 General * 3-2.2 Steel * 3-2.3 Timber * 3-2.4 Masonry * 3-2.5 Scour * 3-2.6 Concrete * SECTION 3. STRUCTURAL ANALYSIS * 3-3.1 Introduction * 3-3.2 Piles * 3-3.3 Undermining * 3-3.4 Concrete * SECTION 4. REPAIR STRATEGY * CHAPTER IV MARINE CONSTRUCTION MATERIALS * SECTION 1. INTRODUCTION * SECTION 2. STEEL * 4-2.1 General * SECTION 3. CONCRETE * 4-3.1 Mix Design * 4-3.2 Reinforcing * SECTION 4. MASONRY * 4-4.1 Stone * 4-4.2 Mortar * SECTION 5. TIMBER * 4-5.1 Preservatives * 4-5.2 Decay Reinforced Species * 4-5.3 Fabrication * SECTION 6. COMPOSITES * 4-6.1 Components * 4-6.2 Physical Properties * 4-6.3 Mechanical Properties * 4- 6.4 Example Products * CHAPTER V UNDERWATER REPAIRS * SECTION 1. INTRODUCTION * SECTION 2. GENERAL CONSTRUCTION OPTIONS * 5- 2.1 Repairs Performed "In-the-Dry" * 5-2.2 Repairs Performed "In-the-Wet" * SECTION 3. ENVIRONMENTAL CONSIDERATIONS * 5-3.1 Site Conditions * 5-3.2 Water Conditions * 5-3.3 Regulatory * SECTION 4. METHODS TO OBTAIN DRY WORK CONDITIONS * 5-4.1 Traditional Cofferdams * 5-4.2 Dikes * 5-4.3 Proprietary Barrier Systems * 5- 4.4 Limpet Cofferdams * CHAPTER VI EQUIPMENT FOR UNDERWATER REPAIR * SECTION 1. INTRODUCTION * SECTION 2. DIVING SYSTEMS * 6- 2.1 Scuba * 6-2.2 Surface Supplied Diving * SECTION 3. REMOTELY OPERATED VEHICLES (ROV) * SECTION 4. ABOVE WATER SUPPORT * SECTION 5. UNDERWATER TOOLS * SECTION 6. EXCAVATION METHODS * 6-6.1 Hydraulic Excavators * 6-6.2 Airlifts * 6-6.3 Jetting * 6-6.4 Dredging * SECTION 7. SPECIAL EQUIPMENT * SECTION 8. UNDERWATER WELDING * 6-8.1 Introduction * 6-8.2 Methods * 6-8.3 Welding and Diving Standards and Specifications * 6-8.4 Effects of Wet Welding Versus Dry Welding * 6-8.5 Weld Design * 6-8.6 Weld Qualification * 6- 8.7 Underwater Burning * CHAPTER VII PIER REPAIRS. * SECTION 1. INTRODUCTION * SECTION 2. FORMING SYSTEMS * 7- 2.1 Rigid Formwork * 7-2.2 Flexible Formwork * 7-2.3 Concrete Preparation * SECTION 3. REINFORCING * 7-3.1 Design Considerations * 7-3.2 Surface Preparation * 7-3.3 Anchorage * SECTION 4. CONCRETE PLACEMENT METHODS * 7-4.1 Hand Patching * 7-4.2 Tremie Placement * 7-4.3 Pump Placement * 7-4.4 Preplaced Aggregate Concrete * 7-4.5 Bottom Dump * 7-4.6 Bagged Concrete * SECTION 5. CRACK REPAIR * 7-5.1 Routing and Sealing * 7-5.2 Epoxy Injection * SECTION 6. MASONRY REPAIR * SECTION 7. UNDERMINING AND LOCAL SCOUR REPAIRS * 7-7.1 Undermining Repairs
Author: James E. McDonald
Publisher: Washington, D.C. : U.S. Army Corps of Engineers, Engineer Research and Development Center
ISBN:
Category : Arch dams Maintenance repair Case studies
Languages : en
Pages : 272
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Book Description
This study was conducted to identify methods that have been used in the repair and rehabilitation of concrete dams. Information was obtained through literary searches, discussions with project personnel, and visits to project sites. Each case history includes a background of the project, the deficiency that necessitated repair or rehabilitation, and descriptions of materials and methods used in the repair or rehabilitation. When available, the cost of the repair project and the performance of the repair to date have been included. Case histories included in this report cover a range of deficiencies in concrete structures, including cracking, spalling, erosion, leakage, inadequate PMF capacity, expansion resulting from alkali-aggregate reaction, instability, and insufficient storage capacity.
Author:
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 410
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Book Description
