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Cost Impact of Constructability Analysis in Mega Projects

机译：大型项目中可施工性分析的成本影响

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摘要

The lack of constructability analysis has caused many problems such as increased construction cost, and reduced productivity of project manpower and equipment in construction industry. Because of the complexity of projects and the fragmentation of the construction field into specialized roles and expertise, the construction industry has a great need that constructability analysis be performed at design stage and implemented in construction. This need is salient especially in huge industrial mega projects. This paper presents a case study to investigate the extent of constructability analysis practiced in a selected mega project in the field of oil and gas, and how its ignorance affected the construction cost and productivity. Interviews were conducted with different parties and authorities of the project, including owner, consultants, and contractors. Four main constructability components were determined; project delivery approach, constructability tools, designers' approach to constructability, and constructability constraints. The major constructability items for each component were determined and their impacts on project cost and time were tabulated on a low-medium-high rank basis, based on interview results.
机译：缺乏可施工性分析导致了许多问题，例如建筑成本增加，建筑业项目人力和设备生产率下降。由于项目的复杂性以及建筑领域分散为专门角色和专门知识的情况，建筑行业非常需要在设计阶段进行可施工性分析并在施工中实施。特别是在大型工业大型项目中，这一需求尤为突出。本文提供了一个案例研究，以研究在石油和天然气领域中选定的大型项目中进行的可施工性分析的程度，以及其无知如何影响施工成本和生产率。与项目的不同方和机构进行了访谈，包括所有者，顾问和承包商。确定了四个主要的可施工性组成部分。项目交付方法，可施工性工具，设计人员的可施工性方法以及可施工性约束。确定了每个组件的主要可施工性项目，并根据访谈结果以中低等级列出了它们对项目成本和时间的影响。

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