Abstract: This paper describes an expert system that helps the construction or highway engineer choose the most appropriate compactor under a set of job conditions. Selecting the suitable compactor is affected by numerous field ...

Abstract: This paper describes an approach for probabilistic analysis of construction operations in which nonstationary cycle times have a major impact on production. A nonstationary cycle time is defined as a cycle time that varies ...

Abstract: This paper investigates the integration of simulation with expert systems. Several recent engineering research projects in this field are described. Relevant research in construction is discussed and potential benefits of ...

Abstract: This paper presents a mathematical model for calculating the budgetary impact of increasing the required confidence level in a probabilistic risk assessment for a portfolio of projects. The model provides a rational approach ...

Abstract: One of the difficulties in probabilistic estimating is accounting for the existing correlations among cost components modeled as random variables. Even if the estimator is aware of the existence of correlations among random ...

Abstract: Actual tunnel advance rates from the Outfall Tunnel of the Boston Harbor Cleanup Project are analyzed. It is shown that states of work and nonwork for the tunnel boring machine can be modeled with a Markov chain. A general ...

Abstract: This paper proposes a probabilistic model for the calculation of project cost contingency by considering the expected number of changes and the average cost of change. The model assumes a Poisson arrival pattern for change ...

Abstract: This paper presents the results of a comprehensive survey of the legal codes of all the 50 states in the United States regarding alternative project delivery systems in transportation projects. In the past decade there has ...