應用Revit與QTO於非主體結構工程之數量計算

Abstract

傳統工程估價作業需由人員判讀設計圖說之各個工項尺寸、面積及數量，因此估價結果易受到人員經驗、能力及專注力影響，亦常發生漏項及計算錯誤等問題。 為了提升工程數量計算的品質與效率，本研究以一實際案例之非主體結構工程為例，應用徐霈元(2013)針對主結構工程之BIM估價模式為基礎，及Autodesk Revit Architecture、Autodesk Quantity Takeoff(QTO)、經費電腦估價系統(PCCES)為軟體之輔助，測試BIM估價模式應用於非主體結構工程之可行性，建立一個「製作非主體結構工程施工數量預算書之模式」。 藉由建築資訊模型(Building Information Modeling，BIM)及QTO之特性，使軟體可自動計算數量，再配合PCCES功能，直接由BIM模型產生施工預算總表及詳細表，達成設計與估價作業之完全整合。研究結果顯示，本研究採用之BIM估價模式，可大幅縮減計算時間及協助達成較佳之準確性，此外亦可自動產生符合國內工程通用格式要求之表單，實有助於目前營建產業估價作業之便利性。

Traditionally, in engineering cost estimation, the size, area and quantity of each item in the design drawing have to be manually interpreted by personnel, so the estimation has been dependent on the experience, ability and attentiveness of the personnel; as a result, omissions and errors are common. To enhance the quality and efficiency of engineering quantity estimation, this study, taking the non-structural engineering of an actual case as an example, used Pei-Yuan Hsu BIM estimation model for main structural engineering as the basis and Autodesk Revit Architecture (Revit), Autodesk Quantity Takeoff (QTO) and Public Construction Cost Estimate System (PCCES) aids to test the feasibility of applying the BIM estimation model on non-structural engineering, in order to establish a model for creating a construction quantity budget statement for non-structural engineering. With the characteristics of BIM and QTO, the software can automatically calculate the quantity of, and create construction budget general/detail tables directly through the BIM model, together with such functions of PCCES, thus realizing the complete integration of design and estimation. The research results show that the BIM estimation model adopted in this study can greatly reduce estimation time and assist in achieving more accurate results. In addition, it can also automatically create forms that meet the common format requirements of domestic engineering, materially facilitating the current estimation process of the construction industry.