Automated Cost Analysis of Concept Design BIM Models

摘要

This paper introduces the Preliminary Concept Design (PCD) Cost Analysis Module developed for the General Services Administration (GSA) and the analysis results of a case study involving a concept design courthouse BIM model. The module uses IFC data from BIM models to extract quantity take off data using Solibri Model Checker (SMC), generates an input XML file to the PACES cost estimating software, and produces a comprehensive reporting scheme. The paper explores interoperability issues related to integrating design and analysis tools; specifically BIM models and cost models. We argue that architects and estimators can benefit from the proposed module, where the cost feedback cycle becomes more efficient and their decision-making process is continuously informed throughout multiple design iterations.