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Buffer Sizing in CCPM Portfolios with Different Resource Capacities

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  • Mahdi Ghaffari

    (University of Manchester, Manchester, United Kingdom)

  • Margaret W. Emsley

    (University of Manchester, Manchester, United Kingdom)

Abstract

Although buffer sizing is one of the most investigated subjects in Critical Chain Project Management (CCPM), almost all the focus has been on its implications for single-project environments. Among the entire invented buffer sizing methods, the cut and paste method (C&PM) is the most accepted by practitioners and long-established CCPM software packages. This study concentrates on the use of C&PM in CCPM portfolios with different resource capacities with the aim of examining the performance of this method and identifying the most appropriate sizes of project and feeding buffers. This aim is pursued through considering ten different levels of resource capacity, conducting Monte Carlo simulations of randomly generated project data and comparing the results with deterministic duration values of the same portfolios with 30%, 40% and 50% buffer sizes. As a significant contribution, this study recommends what buffer sizes should be allotted in CCPM portfolios with different resource capacities.

Suggested Citation

  • Mahdi Ghaffari & Margaret W. Emsley, 2017. "Buffer Sizing in CCPM Portfolios with Different Resource Capacities," International Journal of Information Technology Project Management (IJITPM), IGI Global, vol. 8(3), pages 40-51, July.
    • Handle: RePEc:igg:jitpm0:v:8:y:2017:i:3:p:40-51
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    Cited by:

    1. Sameer Bathallath & Åsa Smedberg & Harald Kjellin, 2019. "The Viable System Model for Diagnosing and Handling IT-Project Interdependencies in Large Portfolios," International Journal of Information Technology Project Management (IJITPM), IGI Global, vol. 10(1), pages 72-87, January.

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