This research investigates the importance of the make-ready process in last planner implementation. The make-ready process has the potential to improve workflow predictability and reliability in construction projects. The construction industry has recognized that timely constraint removal is an important and distinctive requirement of successful projects. Percentage of constraint removal (PCR) was used as a performance metric for the make-ready process. The authors tested the relationship between PCR and Percent Planned-work Completed (PPC), and hypothesize that PPC depends on the effectiveness of the make-ready process. Correlation and regression analyses were used to investigate how the effectiveness of the make-ready process (as measured by PCR) affects PPC. The results of the correlation coefficients for the relationship between PPC and PCR are significant (p<0.05). The regression analysis revealed that PPC positively related with PCR (p<0.1). Workflow reliability differed depending on the operational performance of the make-ready process.
make-ready process, constraint analysis, percentage of constraint removal, percent plan complete, case study
Jang, J.W. & Kim, Y.W. 2008, 'The Relationship Between the Make-Ready Process and Project Schedule Performance' In:, Tzortzopoulos, P. & Kagioglou, M., 16th Annual Conference of the International Group for Lean Construction. Manchester, UK, 16-18 Jul 2008. pp 647-656