Journal
AUTOMATION IN CONSTRUCTION
Volume 30, Issue -, Pages 126-135Publisher
ELSEVIER
DOI: 10.1016/j.autcon.2012.11.020
Keywords
Building Information Modeling; Industry Foundation Classes; Cost estimation; Specification for cost estimation; Building projects
Funding
- National Technological Support Program for the 11th-Five-Year Plan of China [2007BAF23B02]
- Tsinghua University Research Fund [2011THZ03]
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Cost estimation for tendering of building projects (TBP cost estimation, hereafter) is one of the most critical tasks in the architecture, engineering, construction, and facilities management (AEC/FM) industry. However, it is currently both time-consuming and prone to error because of the working complexity and comprehending deviation caused by the traditional two-dimensional representation of design. The advent of Building Information Modeling (BIM) technology enables a potential solution to these problems through the support of open data exchange standards such as the Industry Foundation Classes (IFC) standard. This paper discusses the key issues for semi-automatic and specification-compliant TBP cost estimation based on the IFC data of the design model, taking TBP cost estimation for the architectural and structural engineering of the cast-in-place concrete structure projects as an example. A Chinese national mandatory specification for TBP cost estimation is introduced as a representative specification and is interpreted into a computer-processable format. An IFC-based construction product information model of TBP cost estimation is established. A general process map and the involved key algorithms for semi-automatic and specification-compliant TBP cost estimation based on the IFC data of the design model are formulated. The application of the process map and algorithms in developing a prototype BIM-based software application for TBP cost estimation and the results of applying the prototype in an actual building project in China are presented. This paper lays a sound foundation for developing BIM-based software applications for TBP cost estimation in China, and demonstrates a feasible approach to satisfying the similar requirements in different countries. (C) 2012 Elsevier B.V. All rights reserved.
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