Workplan: Database for Work Package Production Scheduling

Hyun Jeong Choo1, Iris D. Tommelein2, Glenn Ballard3 & Todd R. Zabelle4

1screening, work package, constraint, percent of planned completed (PPC).
2Associate Professor, Constr. Engrg. and Mgmt. Program, Civil and Envir. Engrg. Dept., 215 McLaughlin Hall #1712, Univ. of California, Berkeley, CA 94720,
3Lecturer at U.C. Berkeley and Director of the Lean Construction Institute, 4536 Fieldbrook Rd., Oakland, CA 94619,
4President, Pacific Contracting, Inc., 222 Sutter Street, Suite 310, San Francisco, CA 94108,


A database program called WorkPlan has been created to systematically develop weekly work plans. WorkPlan adopts the Last Planner methodology, which implements several lean construction techniques. A week prior to conducting work, WorkPlan guides the user step by step through the process of spelling out work packages, identifying constraints, checking constraint satisfaction, releasing work packages, and allocating resources; then at the end of the week, collecting field progress data and reasons for plan failure. This systematic approach helps the user create quality work plans and learn from understanding reasons for failure. The functionality of WorkPlan is detailed in this paper. Various ways of displaying work package data are illustrated. WorkPlan is to our knowledge the first computer tool designed specifically to implement lean production philosophy in construction.


WorkPlan, weekly work plan, database, lean construction, production scheduling, screening, work package, constraint, percent of planned completed (PPC).



Choo, H.J. , Tommelein, I.D. , Ballard, G. & Zabelle, T.R. 1998, 'Workplan: Database for Work Package Production Scheduling' In:, 6th Annual Conference of the International Group for Lean Construction. Guaruj√°, Brazil, 13-15 Aug 1998.

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