Abstract: The measured mile method, a widely accepted approach involved in lost productivity claims, compares the productivities of identical or similar work between nonimpacted or least impacted and impacted segments of a project. The procedures to implement a measured mile study usually include data processing, productivity measurement, measured mile identification, cause and effect analysis, and loss of productivity calculation. Despite the popularity of the measured mile method, incorrect implementation can cause failures in proving and quantifying loss of efficiencies for claims that resulted from the impacts legitimately assignable to other parties. This article discusses some common errors and pitfalls in implementing the measured mile method in loss of efficiency claims, which should be avoided. A case study, demonstrating how to turn a loss of efficiency claim from implausible and counterintuitive to well supported with causation by correcting a few subtle errors in implementing the measured mile method, is also presented.

This article, Avoiding the Pitfalls in Implementing the Measured Mile Method,  by Dr. Tong Zhao, PE PSP and J. Mark Dungan appeared in the 2013 AACE® International Transactions, as CDR.1246.  Download the full article in pdf format.

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Dakus Gunn

Dakus-Gunn-83x123Dakus Gunn is a testifying expert in both delay analyses and damages calculations with 15 years of experience in project scheduling, mediation, arbitration [both domestic and international], dispute adjudication boards, and federal trial.  He has extensive experience in disputes pertaining to transportation projects, renewable and non-renewable energy facilities, land development, residential projects, and entertainment & sports arenas.

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