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Coordination Needs and Supply of Construction Projects

机译：建设项目的协调需求和供应

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Coordination has been regarded as a critical factor of construction projects, but it is usually not well understood. It is common that time and money are spent on coordination, yet the performance is not as expected. This article studies the coordination needs and supply of construction projects. First, coordination needs were derived from work uncertainty and equivocality (U&E), and supply was offered by different methods engineers use to coordinate. Then ten subway construction projects were investigated. A questionnaire was modified to quantify the project U&E, and a time sheet designed to collect contractor engineers' work time allocated in nine coordination methods. Finally, how actual coordination time distribution met the needs and their relationships with performance were analyzed. The results indicate that the project performance is not related to the level of U&E. In the nine coordination methods of the studied projects, site visit took up the most time (23%), followed by correspondence (20.5%) and meetings (13%). Projects with good performance applied adequate oral or written coordination mainly based on work equivocality.
机译：协调一直被认为是建设项目的关键因素，但是通常并没有很好的理解。花费时间和金钱进行协调是很常见的，但是性能却不如预期。本文研究建设项目的协调需求和供应。首先，协调需求来自工作的不确定性和模棱两可（U＆E），并且供应是由工程师用来协调的不同方法提供的。然后调查了十个地铁建设项目。修改了调查表以量化项目的使用和维护，并设计了一个时间表，以收集通过九种协调方法分配的承包商工程师的工作时间。最后，分析了实际的协调时间分配如何满足需求以及它们与绩效的关系。结果表明，项目绩效与U＆E水平无关。在所研究项目的九种协调方法中，现场访问最多（23％），其次是信函（20.5％）和会议（13％）。绩效良好的项目主要根据工作模棱两可进行适当的口头或书面协调。

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