Developing a Lessons Learned Database for NCDOT Projects Using Design for Six Sigma (DFSS) Approach

Abstract

Valuable lessons and best practices learned from construction projects often fail to get transferred to future generations due to the lack of a formalized process. This perpetual problem gives rise to the need of imparting fresh training to new inductees once the aging workforce retires or in the event of turnover in an organization. This paper aims to facilitate the process of disseminating knowledge gained in the transportation area by developing a lessons learned database named Communicate Lessons, Exchange Advice, Record (CLEAR) under the auspices of the North Carolina Department of Transportation (NCDOT). A Six Sigma approach to Identify, Define, Develop, Optimize, and Verify (IDDOV) was used to develop the CLEAR database. The IDDOV model in Design for Six Sigma (DFSS) is a five-step process in designing efficient and robust new systems. The first phase involved conducting interviews with end-users as well as reviewing existing data within NCDOT data repositories such as claims and supplemental agreements data to better understand challenges and issues in need of resolution. With this information as basis, an outline for web-based database was created from which feedback was solicited. After taking into consideration all preferences from these end-users, the web-based database was fine-tuned to reflect all comments and suggestions gathered by the research team. This database is currently being populated from ongoing pilot projects. In the final stage of this project, the CLEAR database will be launched throughout the state on all ongoing projects. These five project phases reflect the principles of the IDDOV method of Six Sigma which provides the foundation for developing this database. Findings from this study will help NCDOT to institutionalize knowledge and improve project cost variations and schedule predictability. The success metrics include anticipated reduction in number of claims, claim amounts and increased coordination among staff within NCDOT.