The Application of Building Information Modeling in Steel Value Engineering

• Main Author: 黃祥峻
• Other Authors: 林保宏
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/44272101476534146075

碩士 === 逢甲大學 === 土木工程學系 === 101 === In current general construction projects, constructing rebar accounts for a large proportion of the costs. Thus, issues regarding the planning of the rebar construction and material costs control and management are essential. Two-dimensional (2D) drawing is typically used in domestic construction to calculate the number of rebars. First, various related values are manually measured and the dimensions and height data for all components are input to a 2D drawing. These steps are time- and labor-consuming, often wasting resources and causing disputes. Construction sites often experience a shortage or excess of rebars because of manual input errors. A 2D drawing lacks a communication platform or actual model, thereby causing the problems of infeasible planned or designed patterns for a construction site. After long-term observations of on-site rebar construction, building information modeling (BIM) was used to establish the relationship between objects, and the information connection between objects and databases, effectively reducing omissions and errors when calculating the quantity of materials required for a construction. The quantity of materials and resulting data change when an object is removed or a value is modified. This study also introduces BIM as a communication platform. By using a three-dimensional (3D) BIM model, a design can be clearly presented, reducing miscommunication. In addition, the information (e.g., dimensions, location, relative spatial position, material, quantity, and cost) in a BIM model can be directly transmitted and used without repeated input, thereby reducing human error and enhancing work efficiency. Using a 3D simulation to verify a design can reduce errors during construction, thereby lowering the risk of redoing construction works because of errors. Employing a computerized BIM simulation can locate potential conflicts and problems, yielding the opportunity to solve these problems resulting from construction design or its alteration, and can facilitate the optimization of, or elimination of unnecessary procedures. The results of this study show that value engineering, using BIM as a communication platform, can solve problems related to quantity differences and space conflict, effectively reducing losses or excess materials, reducing the number of construction errors, and ameliorating the risk of redoing construction work because of errors. Keywords: building information modeling (BIM), rebar construction, value engineering