BIM-based method calculation of auxiliary materials required in housing construction

Abstract To address the problems of budgetary inaccuracy, the lack of comprehensive or high-level management, and the existence of serious waste of auxiliary materials during the main construction phase of housing construction, a BIM-based method for calculating the auxiliary materials required for housing construction is proposed in this paper. The BIM model is firstly built according to structural construction drawings, the construction scheme and the construction specification and technology in the main structure construction stage; then, the usage of auxiliary materials is calculated, and the auxiliary material dosage report, construction drawings, and processing drawings are generated for purchasing, collectively processing auxiliary material and guiding construction at the same time. This paper improves upon the traditional auxiliary material management model and design via the implementation of a BIM application named zgBIMs according to the proposed method. The improved management model uses the generated auxiliary material dosage report, construction drawings, and processing drawings to centralize the processing of the required auxiliary materials, strengthen supervision in the process of material distribution and construction, and introduce a reward and punishment mechanism to control the attrition rate of auxiliary materials. In this paper, the successful implementation of the presented method and management model is demonstrated as part of a comprehensive and experimental building project. The experimental results show that the proposed method can be used for the accurate calculation of the amounts of auxiliary materials required to reduce the use and waste of auxiliary materials efficiently and thus save construction costs.