Applying Six Sigma to Quality Improvement in Construction

AbstractTaiwan is in a seismically active zone because it is located in the earthquake-prone Pacific ring of fire. The cracks in lightweight partition walls caused by frequent earthquakes decrease customer satisfaction and increase repair costs in the case company. This research demonstrates how a Six Sigma team can determine and improve the key input variables affecting the cracks in lightweight partition walls. A case study methodology is used in this research to illustrate the tools of Six Sigma by using the project charter to define problems, by using tools of process mapping to display all the input and output variables affecting cracks in lightweight partition walls, by using the C&E (cause-and-effect) Matrix to select highly correlated input variables, and by using failure modes and effects analysis (FMEA) to identify causes of the cracks. Unlike conventional Six Sigma, finite-element analysis (FEA) simulation software ABAQUS was used instead of statistical tools to verify variables and to identify...