Alternatives for the U.S. Manned Space Program
There are a number of directions the U.S. space program could take. Should a space station be built? Should a lunar outpost be constructed? Should the U.S. plan a manned trip to Mars?...
Evaluation Plus History Equals Sewer Renovation
Sewers built in the 1920's were overflowing in the Fort Worth Zoo after moderate rain events. Data from A Sanitary Sewer Evaluation Survey (SSES), plus the Maintenance History...
Rehabilitation Model for Water Distribution Systems
This paper presents an optimization model for determining the minimum cost rehabilitation and replacement of pipes in water distribution systems. The advantages of the proposed model include...
Cost-Effective Maintenance and Replacement Scheduling
The paper discusses operations research approaches to scheduling maintenance on components of water resources infrastructure. Cost and reliability objectives are explicitly considered....
Models for Optimal Maintenance of Hydraulic Structures
Corrective maintenance includes the unscheduled repairs required to return a structure from a failed state to an operating or available state. Corrective maintenance is determined by the...
Remote Infrared Thermal Sensing of Sewer Voids
The question addressed by this paper is how to detect unseen problem areas in sewer systems before they give way. At present, progressive sewer administrations may use crawl crews or television...
Economic Assessment of Infrastructural Development for the Gurara River in Nigeria
Based on the preliminary designs of the hydraulic structures for the proposed Gurara river water development project in Nigeria, an economic feasibility analysis is presented. The cost...
Appropriate Cost Factors for System Reliability
This paper examines the development of appropriate costs to be associated with various levels of failure of water distribution networks and water supply systems. A clear distinction is...
Weighting Factors for Transferable Discharge Permit Programs That Group Several Pollutants
Transferable discharge permit (TDP) programs for controlling several pollutants may manage such pollutants as several individual commodities or as a single weighted sum of the various...
Real-Time Optimized Control of a Water Distribution System
The paper presents the design of a fully automated real-time computer control scheme for least cost operation of a water distribution system. The scheme includes modules for optimized...
Marginal Cost Techniques for Reservoir Optimization
Selection of the optimum water supply reservoir from multiple reservoir sites under consideration in a water resource planning study for the Houston Metroplex evaluated hydrology, engineering,...
Benefits from Floodplain Management Activities in Relation to Operating South Holston Dam
Floodplain management activities have primarily been directed toward avoiding floodplain siting where practical; where siting is unavoidable, elevating structures, facilities, or equipment...
Buried Treasure
Kelly describes landfill mining feasibility studies at two New England communities. Recently, due to rising landfill closure costs, a concept of landfill mining has been tested and shown...
Choosing Display Hardware for Transportation Planning Packages
This paper reviews the popular transportation planning software packages on the market and their graphics capabilities. Hardware options that allow the user tp achieve high resolution...
A Graphical Database for Transportation Systems
A graphical database composed of programmable objects analogous to elements of a physical plant of a transportation network is presented. The discussion reviews the application of a graphical...
Slips Ahoy
Klancnik discusses the markets for marina construction in the 1990s. The past decade saw a boom in the boating industry and in the design and construction of marinas. The market will remain...
Creating the Proper Environment: The Consultant's Role in the Privatization of Public Transportation Projects
The consultant can provide input for the development of political consensus for individual projects by providing technical support, accurate costs, realistic schedules, and experience...
Economic factors of Drainage Water Reduction
Properly designed and maintained pressurized systems provide better irrigation control and greater infiltration uniformity. But irrigation costs are increased. Imposition of drainage water...
Estimation of Expected Damages, Indemnification Costs and Joint Probabilities of Dam Failures
This paper describes three methods to evaluate structural options for the rehabilitation of an existing dam using the dollar-denominated risk and capital cost associated with each option...
Maintenance Scheduling for Water Resource Systems: An Application to Advance Maintenance Dredging
A number of investigations have been performed in the recent years to analyze the effect of advance maintenance and to see if it is justifiable. These studies gave promising results but...
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