隨著人們對生活品質的要求逐漸升高，不斷改善建築環境的舒適度與便利性，使得現代建築之機電系統設計漸趨複雜化。機電系統複雜之專案如醫院、旅館、商業辦公大樓、生物科技廠、電子晶圓廠等，其機電工程費用可達專案總成本百分之五十以上，對專案品質、時間、成本有一定的影響力。
然而，機電系統元件多依附於建築結構與裝修材料上，使得機電作業多不能獨立進行，需配合土建包商施工流程。而機電系統種類繁多，專業知識較不易為其他工種所了解，容易產生界面問題，需透過不斷重複的溝通與協調來解決工程問題。
由於界面衝突點多，使得機電系統設計常有不預期之管線衝突，需多次檢討、修改與估算圖面，大幅增加機電內業人員的工作量，稍不謹慎則易產生人為錯誤。此外，機電作業施工過程當中常有施工空間干擾、施工順序紊亂之情形，管路配裝與設備安裝順序無統一準則可供參考，常需拆除重做工項，因而導致專案成本增加、工期壓縮與品質降低。
隨著BIM(Building Information Modeling)技術發展漸趨成熟，相關電腦輔助工具已被研究學者應用於專案實例，並獲得可觀的效益。本研究透過訪談、觀察、施工文件整理，以一棟新建醫院第八層機電系統為案例，對照相關文獻資料，建構機電元件施工邏輯與屬性架構，將機電包商施工所需資訊內嵌於3D 機電模型繪圖元件屬性當中，使元件資訊得以被包商擷取並應用於數量計算、採購、物料分配、施工排序、系統測試等基本施工作業需求。

MEP is an acronym for “Mechanical, Electrical, and Plumbing systems”, with increases in the functionality and complexity of buildings, the MEP scope now includes fire protection, controls, process piping, and telephone/datacom systems. In recent years, the cost of MEP systems can now more than 50 percent of total project cost, having significant impact on project performance.
Naturally, MEP components must fit within the constraints of architecture and structure, thus the MEP construction activity are highly associated with architecture and structure procedure. However, the knowledge of MEP systems is very specialized, difficult for one discipline to know the requirements of the other trades. In order to across the gap of lacking knowledge and understanding of multiple disciplines involved, MEP subcontractors need a lot of coordination, but usually the coordination is not budgeted in the construction cost and the coordination process is slow and expensive.
During the design and construction phases, there are many invisible conflicts and interference exists between MEP systems and various trade works. It is difficult for human manually find out all the potential problems concealed within a highly complex building systems. Therefore, some researchers and industry professionals adopt computer tools such as BIM/VDC tools to help MEP design and coordination, and successfully apply BIM/VDC tools on real project, come up with remarkable benefit.
This research is trying to develop a BIM 3D Model according to MEP subcontractor’s need. We interview MEP expert to acquire the specialized knowledge, observe their coordination process to find out the frequent problem area, analyze construction document to define the attributes of MEP components then review literature to quickly understand MEP practice.
After knowing the needs of MEP subcontractors, we create a 3D BIM Model which contain the information required by MEP subcontractors. This Model can export information for quantity estimating, procurement, material allocation, construction priority analysis and MEP system testing, also help subcontractor to improve their productivity, provide a better visual coordination platform for MEP Professionals.

英文部分
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