Productivity scheduling method: Linear schedule analysis with singularity functions

Lucko, G (2009) Productivity scheduling method: Linear schedule analysis with singularity functions. Journal of Construction Engineering and Management, 135(4), pp. 246-253. ISSN 0733-9364

Abstract

This paper describes a new integrated method of linear schedule analysis using singularity functions. These functions have previously been used for structural analysis and are newly applied to scheduling. Linear schedules combine information on time and amount of work for each activity. A general model is presented with which activities and their buffers can be mathematically described in detail. The algorithm of the new method forms the body of the paper, including the steps of setting up initial equations, calculating pairwise differences between them, differentiating these to obtain the location of any minima, and deriving the final equations. The algorithm consolidates the linear schedule under consideration of all constraints and, thus, automatically generates the minimum overall project duration. The model distinguishes time and amount buffers, which bears implications for the definition and derivation of the critical path. Future research work will address float and resource analysis using the new model.

Item Type: Article
Uncontrolled Keywords: critical path method; geometry; network analysis; productivity; scheduling; time dependence
Index terms: productivity, geometry, network analysis, duration, buffer, critical path, scheduling, structural analysis, critical path method
Subjects: project controls, structural engineering, management, financial risk, operations research, data analysis and analytics, mathematical modelling
Topics: Time Control, Engineering Principles, Research Practice, Business Strategy, Cost Management
Descriptive scope: 3 PCA

N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here