How building design imperatives constrain construction productivity and quality

Since the early 1960s, the construction industry has been continually criticized for its low productivity and poor quality. Throughout this period, it has been widely recognized that building design has a significant impact on construction performance. As a result, considerable research and industry efforts have been focused on improving information and activities in the building design process. This paper reports the findings of a study which investigated how design imperatives affect design information and design activities. First, design imperatives are defined. Then, an analysis of their determining influence on design information and design activities are provided. Next, it is explained how design imperatives, rather than information and activities, constrain productivity and quality by limiting production options. In conclusion, it is argued that design imperatives have a greater influence on productivity and quality than the industry in which design is carried out.