ACHIEVING A LEAN DESIGN PROCESS

Abstract

An improvement methodology is proposed for the design process in construction projects. Based on the concepts and principles of Lean Production the methodology considers the design process as a set of three different models: conversion, flow and value. Four stages are necessary to produce improvements and changes: (1) diagnosis/evaluation, (2) change implementation, (3) control, and (4) standardization. The methodology proposes the application of seven tools in accordance to specific needs (detected and desired) in five potential areas of improvement (CAPRI): Client, Administration, Project, Resources, and Information. The Results of one application included: an increase of 31% in the proportion of value adding activities, a 44% reduction in product errors per unit, an up to 58% decrease of waiting times in the process, and an increase in utilization in the cycle times. In this manner, not only did the efficiency and effectiveness of internal engineering products improve, but also the whole project, by improving one of the main suppliers of construction.