Abstract: The measured mile/baseline method has been widely accepted to quantify labor productivity loss, but it has not been successfully used in engineering productivity because of the challenges in engineering productivity measurement and the determination of productivity benchmark. This paper presents a series of procedures based on the measured mile/baseline method to quantify engineering productivity loss from a project specific perspective. A case study on the piping discipline in a large scale process plant project is used to illustrate the calculation.  The paper also includes a proposed approach, the two mile method, to quantify engineering productivity loss using data for similar work, but different complexity.

This article, Proving Engineering Productivity Loss,  by Dr. Tong Zhao, PE PSP and J. Mark Dungan appeared in the 2012 AACE® International Transactions, as CDR.980.  Download the full article in pdf format.

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Dr. Tong Zhao

tzhao-bio Page 1 Image 0004Tong Zhao, PhD, PE, PSP, recently co-authored an article, "Improved Baseline Method to Calculate Lost Construction Productivity", a peer-reviewed article, that was published in the February issue of the Journal of Construction Engineering and Management. He has performed numerous productivity studies including craft labor inefficiencies, as well as engineering design and fabrication inefficiencies.

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