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Pore Pressure Development: Probability Analysis
The development and subsequent dissipation of excess pore pressure, p in a soil deposit subject to an external load is examined using probability concepts that account for uncertainties...

Probabilistic Fatigue Crack Growth Analysis with Reliability Updating
A randomized fatigue crack growth model based on the Paris and Erdogan crack growth equation is used to estimate the reliability of fatigue sensitive details in steel bridges. This model...

Probabilistic Slope Stability?Case Study
The stability of a slope depends upon highly variable conditions of varying degrees of importance. Probability theory is used herein to assess the relative importance of the soil parameters...

Response of Structural Systems with Uncertain Parameters: A Comparative Study of Probabilistic and Fuzzy Sets Models
Due to the limitation in space, this paper only presents the conclusions of a study on the response of structures with uncertain properties such as mass, stiffness and damping. In the...

Analysis of Bridge Truck Loads
The development of the reliability-based load and resistance factor design (LRFD) methodology requires uncertainties in loads and resistance be quantified. In the load capacity evaluation...

Water Demand Forecast Uncertainty
This paper examines the effect of water demand forecast uncertainty on the operation of a city's water supply system. It is based on a number of years experience the author...

Dams and Earthquakes: A Shaky Relationship
The rarity of earthquake-related dam failure does not mean that it can't happen. A phased geologic assessment could prevent potential catastrophe by determining where and...

High Plains States' View on Weather Modification
The need for a critical analysis of all weather modification efforts has continued to be expressed during the ten years of the North American Interstate Weather Modification Council (NAIWMC)....

Uncertainty and Value Analysis in the Selection of Dam Modification Alternative
Objectives and attributes were decided by the dam and watershed requirements, value judgments of decision makers, quantified trade-offs between different attribute values, and technical...

Support the Complex
A computerized decision support system (DSS) can help manage the uncertainties of a complex construction project. A construction DSS consists of two interlocking parts. First, it is a...

Investigation of Excavatability in the Piedmont
The lateral and vertical variability of rock weathering in the Piedmont presents significant problems in evaluating the probable cost of excavation for deep basements, pipeline, road cuts,...

Management Responses to Technical Uncertainty
Recent attention to management and regulation of contaminated waste materials has served to heighten awareness of the role of technical uncertainty in regulatory decisionmaking. Two distinct,...

Detection, Control, and Renovation of Contaminated Ground Water
The papers in this book provide technical guidance to engineers regarding the problems, solutions, and uncertainties associated with groundwater contamination in the United States. The...

An Uncertainty Analysis Methodology Applied to Sheetpile Cofferdam Design
The input data to numerical simulation models is often uncertain, and, consequently, model predictions may be uncertain. Such uncertainties are often treated by Monte Carlo techniques....

Water Distribution System Design by Chance-Constrained Model
The objective of this paper is to present an optimization model for the design of water distribution systems considering the uncertainty in required demands, required pressures, and pipe...

Uncertainty in Models for Environmental Management
In recent years, computer models have become increasingly popular as tools to aid the decision-maker in balancing complex, interacting factors in environmental management and pollution...

Uncertainties in Wind Loads Caused by Adjacent Buildings
Mean and fluctuating values of all three moment components caused by wind acting on small-scale models of tall prismatic buildings have been measured. Measurements were made in a boundary-layer...

Cumulative Damage of Structures
Structural response records may be analyzed to estimate relative motions of civil engineering structures. Several methods are available for the estimation of cumulative damage on the basis...

New Directions in the Application of Probabilistic Concepts in the Seismic Analysis of Nuclear Power Plants
During the last 8 years, probabilistic concepts have been used in the seismic analysis of nuclear power plants. Probabilistic risk assessment (PRA) has been the primary vehicle for performing...

Uncertainty Analysis of Field Turbine Performance Measurements
This paper presents comprehensive uncertainty analyses of two different flow measurement methods for field tests on turbines. The 'water to wire' efficiency was...

 

 

 

 

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