Benchmarking project performance: a guideline for assessing vulnerability of mechanical and electrical projects to productivity loss

Awad S. Hanna, Karim A. Iskandar and Wafik Lotfallah

Construction Management and Economics, 2019, vol. 37, issue 2, 101-111

Abstract: Loss of productivity is a contentious issue that has a profound impact on modern construction, yet existing literature provides no quantitative, data-driven method to compare the productivity of different construction projects or to assess their vulnerability to productivity loss. A new mathematically derived metric, called the “Risk of Productivity Loss (RPL)” score, provides such a method. RPL is a function of multiple distinct productivity factors. The RPL score is developed from a dataset of 166 electrical and mechanical projects, which collectively amount to 7.2 million labour hours. This large sample size makes the RPL score a reliable productivity benchmark for the electrical and mechanical construction industries due to their labour-intensive nature. The higher the RPL score, the higher the risk that a given project will suffer from productivity losses. To supplement the mathematical formula presented, objective data-based weights for multiple key productivity factors have been identified, reducing the subjectivity that affects many of the existing weighting assessment methods. RPL provides the industry with a single metric that allows tracking and assessment of productivity for multiple projects at a time so that a contractor may assess the successful reduction of productivity risk factors within the projects in their company.

Date: 2019
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DOI: 10.1080/01446193.2018.1513160

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