Keeping Lifelines Alive
There were no city water supplies to fight the fires in San Francisco after last year's earthquake. The fires were brought under control because of an historic auxiliary water...
Development of the Engineered Barriers for the Deep Geological Disposal of High-Level Radioactive Waste
Vitrified waste, overpack and buffer material are under research and development as engineered barriers in the deep geological disposal system of high-level radioactive waste. Static leach...
Removal of Scale from Potable Hot Water Systems by Carbon Dioxide Injections
An innovative method for inplace scale removal has been developed and demonstrated. Injection of carbon dioxide gas into a piping system can lower the pH of the hot water and remove or...
Predicting Watermain Breakage Rates
Recent studies on water main breakage have shown significant spatial and temporal clustering in the breakage pattern. The methodology described in the paper provides the basis for a prediction...
Urban Drainage Pipe Systems: Failure Diagnosis and Rehabilitation Planning
A Task Committee on Failure Diagnosis and Rehabilitation of Urban Drainage Infrastructure has been organized by the Urban Water Resorces Committee of the Water Resourcs Planning and Management...
The New Generation of Pipeline Rehabilitation
The new advancements in pipelines reconstruction technologies now permit total sewer system rebuilding of collectors, drainlines, manholes, service laterals, and force mains without excavation....
Meta-Site: Water Distribution System Analysis Software
Many local municipalities now require a network analysis for all proposed additions to their water distribution systems. A graphically oriented, user-friendly program is being developed...
Is There a Future for Vacuum Sewers?
Vacuum sewers collect and transport sanitary sewage using pressure difference rather than gravity as the primary motive force. Compared to conventional gravity sewers, they use smaller...
Groundwater Quality Network Design
This paper presents a methodology that uses optimization for designing a groundwater monitoring network. The methodology incorporates parameter estimation in conjunction with a numerical...
How Microcomputer Transportation Networks Can Shift Institutional Relationships Between Governmental Agencies
This paper describes the current institutional and microcomputer relationships in the Portland, Oregon metropolitan region; identifies how emerging microcomputer linkages have affected...
Local Area Networks, a Hardware and Software Tutorial
The ability to develop, access and manage information has become a strategic component of a competitive and productive office. The capability to connect groups of microcomputers is now...
Electronic Communication and Data Transfer: Productivity Enhancements
Large ventures operating from widely separated sites cannot depend on local area networks for their communication requirements, as can small, single-sited projects. Not all projects have...
Implementation of a True Multi-User System on a PC
This paper describes the use of and experience with SCO XENIX, a version of the UNIX operating system from Santa Cruz Operation. SCO XENIX offers multi-user features and capabilities,...
Integrated Transit Network Analysis
As part of an update of the Boston, Massachusetts regional transit simulation process, the Central Transportation Planning Staff (CTPS) has implemented a microcomputer-based integrated...
Focused Model Approach for Corridors and Subareas
A focused modeling approach utilizes calibrated model parameters and inputs from a regional model, yet allows the flexibility to quickly test land use, network and other policy alternatives....
Microcomputer Capabilities for Trip Table Estimation and Peak Hour Assignments which Consider Peak Spreading
The microcomputer-based TRANPLAN transportation planning package has been expanded to include a trip table estimation procedure and an equilibrium traffic assignment model which simulates...
The Integrated Traffic Data System
Integrated Traffic Data System (ITDS) is a microcomputer-based system designed to allow traffic engineers to store, maintain and update traffic network information in a centralized data...
Microprocessor-Based Motorist Aid Systems
Motorist aid systems (MAS's) currently being built under a state legislated program in California are fully exploiting the benefits of microprocessor technology. This technology...
Economic Analysis of Local Highway Maintenance
This paper presents a computer program which uses the present worth of life-cycle costs as a basis to select the most cost-effective maintenance strategy to apply to local highway pavements....
Database Network for Innovative Maintenance Operations
This paper provides a summary of the main documentation supporting users of the MAINeT Highway Maintenance Innovations Network. More specifically, the paper explains how to: - find, review,...
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