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7th Annual Conference of the International Group for Lean Construction - Berkeley, California, USA - 1999

Improving Work Flow Reliability

Glenn Ballard¹

¹Director of Research, Lean Construction Institute, and Lecturer, Construction Engineering and Management Program, Dept. of Civil and Environmental Engineering, University of California at Berkeley, 4536 Fieldbrook Road, Oakland, CA 94619, 510/530-8656, FAX 510/530-2048, [email protected]

Abstract

Improving work flow reliability is important for the productivity of linked production units, and consequently for project cost and duration. One measure of work flow reliability is PPC, the percentage of planned assignments completed. A proposal is made for experiments to increase PPC. Four actions are proposed and explained. Only the fourth action, underloading resources relative to capacity, is developed in detail in this paper. The potential impacts of improving PPC on project cost and schedule are described.

Keywords

Capacity, decomposition, design process, explosion, flow, last planner, lean construction, load, productivity, project planning and control, reliability, throughput, variability.

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Reference in APA 7th edition format:

Ballard, G.. (1999). Improving Work Flow Reliability. 7th Annual Conference of the International Group for Lean Construction (pp. 275–286).

Shortened reference for use in IGLC papers:

Ballard, G.. (1999). Improving Work Flow Reliability. IGLC7.

Founded in 1993, the IGLC is an international network of researchers from practice and academia in architecture, engineering, and construction (AEC) who feel that the practice, education, and research of the AEC industry have to be radically renewed in order to respond to the global challenges ahead.