Author: Porter B. ReedPublisher:
ISBN:
Category : Wetland plants
Languages : en
Pages : 154
Book Description
National List of Plant Species that Occur in Wetlands
Author: Porter B. ReedPublisher:
ISBN:
Category : Wetland plants
Languages : en
Pages : 154
Book Description
The Santa Ana River Mainstem Project
Author: Brian M. MoorePublisher:
ISBN:
Category : Flood control
Languages : en
Pages : 26
Book Description
Air-release, Air/vacuum, and Combination Air Valves
Author: Publisher: American Water Works Association
ISBN: 1583211527
Category : Technology & Engineering
Languages : en
Pages : 52
Book Description
Operators, technicians, and engineers will find the information in this manual useful for gaining a basic understanding of the use and application of air valves. A valuable guide for selecting, sizing, locating, and installing air valves in water applications, M51 provides information on air valve types listed in AWWA Standard C512, latest edition, including the following: air-release valve; air/vacuum valve; and combination air valve.
Moving Toward Sustainability
Author: Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 14
Book Description
Standard Construction Guidelines for Microtunneling
Author: Publisher: Amer Society of Civil Engineers
ISBN: 9780784405727
Category : Technology & Engineering
Languages : en
Pages : 41
Book Description
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.
Trenchless Installation of Conduits Beneath Roadways
Author: Tom IseleyPublisher: Transportation Research Board
ISBN: 9780309060219
Category : Technology & Engineering
Languages : en
Pages : 88
Book Description
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.
Chemical Hazard Communication
Author: Exposure to Hazardous Chemicals in Laboratories
Author: Rules for Overhead Electric Line Construction
Author: California Public Utilities CommissionPublisher:
ISBN:
Category :
Languages : en
Pages : 162
Book Description
Alternatives for Ground Water Cleanup
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309049946
Category : Science
Languages : en
Pages : 334
Book Description
There may be nearly 300,000 waste sites in the United States where ground water and soil are contaminated. Yet recent studies question whether existing technologies can restore contaminated ground water to drinking water standards, which is the goal for most sites and the result expected by the public. How can the nation balance public health, technological realities, and cost when addressing ground water cleanup? This new volume offers specific conclusions, outlines research needs, and recommends policies that are technologically sound while still protecting health and the environment. Authored by the top experts from industry and academia, this volume: Examines how the physical, chemical, and biological characteristics of the subsurface environment, as well as the properties of contaminants, complicate the cleanup task. Reviews the limitations of widely used conventional pump-and-treat cleanup systems, including detailed case studies. Evaluates a range of innovative cleanup technologies and the barriers to their full implementation. Presents specific recommendations for policies and practices in evaluating contamination sites, in choosing remediation technologies, and in setting appropriate cleanup goals.