Trenchless technology allows for the installation or renewal of underground utility systems with minimum disruption of the surface. As water and wastewater systems age or must be redesigned in order to comply with environmental regulations, the demand for this technology has dramatically increased. This is a detailed reference covering construction details, design guidelines, environmental concerns, and the latest advances in equipment, methods, and materials. * Design and analysis procedures * Design equations * Risk assessment * Soil compatibility and more
In the past decade, the field of trenchless technology has expanded rapidly in products, equipment, and utilization. This expansion would not have occurred without a strong increase ineconomic incentives to the user. Because theoperating environment has changed, trenchless technology is often the preferred alternative to traditional methods of digging holes and installing conduits. The infrastructure in which we live has become more congested and has to beshared by several users. In addition, the cost of restoring a road or landscaped area after construction may be higher than the cost of installing the conduit. These factors add to the need for trenchless technology-the ability to dig holes without disturbing the surface. In some ways, trenchless technology is a futuristic concept. Ruth Krauss in a children'sbookofdefinitions wrote,"AHole...Is to Dig." But thisstatement is not necessarily true. Today, a hole could be to bore. Trenchless technology is not new. But it certainly has become the buzzword of the construction industry and it appears that it will have a growing impact in the way contractors, utilities, and others install new facilities. Methods to bore horizontal holes were practiced as early as the 18005, but this technology has greatly changed. Today's tools include sophisticated drilling methods, state-of the-art power systems, and electronic guidance techniques. These tools can bore faster, safer, and more accurately, and in many instances more economically, than open-cllt methods. Technology has played an important role in these advances, but economics has become the driving force in making these systems popular.
A fully updated guide to no-dig engineering This thoroughly revised reference covers the latest techniques and materials for high-demand trenchless technology in underground projects. The book offers complete details on new tools, techniques, and analysis methods that can save you thousands of dollars in costs and weeks of surface disruptions. Written by recognized experts in the field, Trenchless Technology Pipeline and Utility Design, Construction, and Renewal, Second Edition offers clear explanations of the various trenchless technologies available—from pipe ramming, microtunneling, horizontal auger boring, horizontal directional drilling, pilot tube, direct pipe; to cured-in-place pipe, spray applied pipe lining, pipe replacement (bursting) and sliplining. Readers will get complete instruction on how to choose the best method for the project at hand. Refreshed throughout to reflect current tools, techniques, and regulations Explains pipe materials, social and environmental costs, pipe jacking, pipeline and pipeline renewal with reference to NASSCO and ASTM standards, as well as relevant EPA guidelines Written by nation’s leading experts on the topic
Design, Install, Inspect, and Manage Trenchless Technology Piping Projects Trenchless Technology Piping offers comprehensive coverage of pipe installation, renewal, and replacement using trenchless technology methods. This step-by-step resource explains how to implement efficient design, construction, and inspection processes and shows how to save time and money with a state-of-the-art project management system. Packed with detailed illustrations, the book surveys the wide variety of trenchless technologies available and discusses the recommended applications for each. This cutting-edge engineering tool also contains vital information on contracting, project delivery, safety, quality control, and quality assurance. COVERAGE INCLUDES: Trenchless technology methods for new pipe installations and old pipe linings and replacements Pipeline planning and design Pipe behavior under soil and traffic loads Details on different types of pipes, such as concrete, plastic, PVC, HDPE, GRP, and metallic Design and project management considerations for horizontal directional drilling (HDD) Trenchless replacement systems, including pipe bursting and pipe removal methods Construction and inspection requirements for cured-in-place pipe (CIPP) Design and construction considerations for pipe jacking and microtunneling methods Quality assurance, quality control, inspection, and safety
This synthesis will be of interest to geologists; geotechnical, construction, and maintenance engineers; other state department of transportation (DOT) personnel involved with the planning, design, and permit issuance for conduits beneath roadways; local transportation agencies; utility contractors and consultants; and trenchless construction equipment manufacturers. It describes the current state of the practice for the use of trenchless technology for installing conduits beneath roadways. Trenchless construction is a process of installing, rehabilitating, or replacing underground utility systems without open-cut excavation. The synthesis is focused on trenchless technology for new installations. This report of the Transportation Research Board describes the trenchless installation technologies (methods, materials, and equipment) currently employed by state DOTs and other agencies to install conduits beneath roadways. The synthesis presents data obtained from a review of the literature and a survey of transportation agencies. For each technology identified, information is provided to describe the range of applications, basis for technique selection, site specific design factors to be considered, relative costs, common environmental issues, and example specifications. In addition, information on emerging technologies and research needs is presented.
FROM THE PREFACE Wastewater collection systems are dynamic, not static. There is no single maintenance method, equipment, or technique that works best. Keeping an open mind, trying new techniques and technologies benefits sewer system operators. No two collection systems are alike. Maintenance staffing, skill levels, equipment, budgets, age and complexity of the system make each agency unique. However, collection systems do have many traits and problems in common. Based on inventory and analysis, problems are identified. Defects may then be prioritized, and corrective maintenance operations put into effect. Preventive maintenance techniques can be applied to all collection systems. Preventive maintenance is cost-effective; it strives to prevent problems from occurring rather than reacting to difficult situations and "putting out fires." This book examines problems shared by all agencies: roots, grease, deterioration, hydraulic inefficiencies and structural defects. New solutions to age-old problems are applied: TV inspection and video interpretation, rehabilitation analysis and trenchless technologies. Computerized maintenance management and GIS softwares are discussed. Jetting, line cleaning and exciting developments in nozzle technology are included. Roots and chemical root control foam, wastewater control and grease are major topics as well. Wastewater Collection System Maintenance shares insights drawn from operator experience, trial and error, successes and failures in the field, interviews and years of research and studies. A user-friendly rating and evaluation system is explained and applied to field conditions. Equipment operation and maintenance, and "tricks of the trade" are also discussed. As cities grow, new systems are extended upstream from older sewers. Many of these core drainage basins are now under capacity and in need of capital improvement projects. There are approximately 600,000 miles of sanitary sewers in the country. Nationwide, there exists a huge backlog of sewer pipes that need rehabilitation. Replacement would cost many billions of dollars. Maintenance operators are entrusted with the care and feeding of an aging sewer infrastructure.
This Standard Guideline covers the planning, design, pipe materials, and construction of microtunneling. Microtunneling is defined as a trenchless construction method for installing pipelines. The North American definition of microtunneling describes a method and does not impose size limitations on that method. The tunnel may be considered a microtunnel if all of the following features apply to construction: the microtunneling boring machine is remote controlled, a laser guidance system is employed, a jacking system is used for thrust, and continuous pressure is provided to the face of the excavation to balance groundwater and earth pressures. This Standard Guideline is a vital reference for owners, engineers, contractors, and construction managers.
"The complete guide to trenchless technology project management, planning, costs, and methodsWritten by an expert in the field of pipeline system engineering, this book describes how to plan, schedule, and implement efficient, cost-effective trenchless technology piping projects. Filled with detailed illustrations and real-world examples, Trenchless Technology: Planning, Equipment, and Methods explains how to accurately compare the costs of trenchless projects, considering geotechnical and rock mass impacts, drilling fluids, and locating and tracking equipment. This detailed reference provides important information on how to estimate the cost of labor and equipment, and schedule trenchless piping projects. A wide range of trenchless technology methods suitable for various ground and project conditions are discussed in this practical resource.Coverage includes: Cost comparison of trenchless technology methods Planning for trenchless technology projects Project delivery methods Geotechnical considerations Rock mass properties impacts on trenchless project feasibility Tracking, locating, and planning tools for horizontal directional drilling Drilling and lubricating fluids Planning and construction requirements for horizontal direction drilling Horizontal auger boring Pipe ramming Microtunneling methods Pilot tube (or pilot tube microtunneling) method Pipe/box jacking and utility tunneling Cured-in-place pipe Sliplining Lateral renewal Localized repair Planning and construction requirements for pipe bursting Panel linings Spray-in-place pipe "--
