Journal of Infrastructure Systems: Recent submissions
Now showing items 1221-1240 of 1280
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Optimal Design for Automatic Control of On-Demand Canal Systems
(American Society of Civil Engineers, 1997)A methodology is developed for the design of an automatic gate controller for an on-demand canal system. The design is based on the EL-FLO plus RESET control concept developed previously by the U.S. Bureau of Reclamation. ... -
Transportation Infrastructure Financing: Evaluation of Alternatives
(American Society of Civil Engineers, 1997)As part of the transportation infrastructure modernization program, a 24-km Colombo-Katunayake Expressway (CKE), is being envisaged between the Colombo International Airport (CIA) and the city center. The Road Development ... -
Loads for Fatigue Life Assessment of Gates at Navigation Locks
(American Society of Civil Engineers, 1997)The U.S. inland navigation infrastructure is deteriorating primarily due to the aging of its components and the operation at near to full capacity of the system's structures. Gates at navigation locks play an integral part ... -
Particle Transport in Soils: Review of Significant Processes in Infrastructure Systems
(American Society of Civil Engineers, 1997)Fine-particle transport in porous media affects performance of civil infrastructure in a number of diverse disciplines. The particle transport processes that are important in infrastructure systems are (1) wastewater ... -
Performance Testing of Trenchless Wastewater Line Spot Repairs
(American Society of Civil Engineers, 1997)The University of Texas at Austin conducted a study for the City of Austin to evaluate the performance of commercially available trenchless spot-repair methods in the City's wastewater pipelines. This paper reports short-term ... -
Fault-Tree Model of Bridge Element Deterioration Due to Interaction
(American Society of Civil Engineers, 1997)Bridge engineers and bridge inspectors recognize that deterioration of one element influences the deterioration of another. The effect of this phenomenon may be critical if it increases the deterioration rate of the affected ... -
VIEWPOINT: Infrastructure Renewal Requires More Than Money, Political Will, and Commitment
(American Society of Civil Engineers, 1997) -
Probabilistic Infrastructure Deterioration Models with Panel Data
(American Society of Civil Engineers, 1997)Statistical models of infrastructure facility deterioration are typically estimated using panel data sets of in-service facilities. For example, biannual ratings of bridges have been used to develop discrete models of ... -
VIEWPOINT: A Public Policy Dilemma: The Limits of Getting More for Less
(American Society of Civil Engineers, 1997) -
Life-Cycle Costs of New Construction Materials
(American Society of Civil Engineers, 1997)New high-performance construction materials are being developed for transportation structures. Economic methods are needed for assessing the life-cycle cost advantages and disadvantages of these new materials relative to ... -
Vehicle Size and Weight Regulations and Highway Infrastructure Management
(American Society of Civil Engineers, 1997)The relevance and important implications of regulations governing the sizes and weights of heavy vehicles in highway infrastructure management are presented. A procedure for evaluating the infrastructure impacts, trucking ... -
Optimal Structures for Decentralized Provision of Roads
(American Society of Civil Engineers, 1996)Local governments are increasingly responsible for the provision of roads. Arguments for decentralization assume that local agencies have a better understanding of local demands and are better able to allocate scarce ... -
Congressional Response to Fragile Foundations: Analysis of Congressional Infrastructure Legislation Introduced Since 1988
(American Society of Civil Engineers, 1997)In 1988, the National Council on Public Works Improvement (NCPWI) issued a report, which made various recommendations with respect to national infrastructure policy. The recommendations included a commitment to double ... -
Seismic Assessment for Offshore Pipelines
(American Society of Civil Engineers, 1996)An international consensus on seismic design criteria for onshore pipelines has been established during the last 30 years. The need to assess seismic design for offshore pipelines has not been similarly recognized. The ... -
Network-Level Bridge Life-Cycle Management System
(American Society of Civil Engineers, 1997)In existing bridge management systems, the information on one stage in the life cycle of a bridge is not efficiently used in other stages, which results in much waste in time and effort. In this paper, a new type of bridge ... -
Infrastructure Obsolescence and Design Service Life
(American Society of Civil Engineers, 1996)Infrastructure facilities generally have long service lifetimes. Major action is nevertheless eventually needed to overhaul, renovate, or sometimes demolish a facility that no longer provides satisfactory service. Sometimes ... -
Condition Assessment of Water Supply Infrastructure
(American Society of Civil Engineers, 1997)A capacity-weighted reliability surface is suggested as a tool to assess the condition of deteriorating water supply infrastructure. A method is developed for calculating the spatial variation in reliability throughout a ... -
Assessing Corrosion on Steel Structures Using Corrosion Coulometer
(American Society of Civil Engineers, 1996)Corrosive exposure and subsequent deterioration of weathering steel structures cause strength loss due to cross-section thinning as well as crack susceptibility due to formation of notches that concentrate stresses. Key ... -
Pipe-Soil Interaction Analysis of Field Tests of Buried PVC Pipe
(American Society of Civil Engineers, 1996)Field tests of buried PVC (polyvinyl chloride) water mains have been undertaken to identify the mechanisms of pipe-soil interaction. Temperatures and strains on the pipes have been continuously measured since late 1993 for ... -
Life-Cycle Cost Analysis with Natural Hazard Risk
(American Society of Civil Engineers, 1996)Life-cycle cost is an important factor that should be estimated in the design and optimal management of infrastructure expected to be functional for a long period of time. In addition to initial construction cost, the ...