預鑄產業身為營建自動化之先驅企業,營運任務上亦與一般傳統營建業類似,皆以專案管理為主體;但其經營管理活動方面,因為有工廠製造攤提之管銷,且為多專案並行,故更需憑藉良好之專案成本管理、進度管理、以及品質管理等,以確保與提昇工程專案執行之績效,其中尤以專案成本管理影響專案執行之營利結果最鉅。 一般專案成本管理及估算方法,所提供單純之成本控制或期間報表等作業活動,因產業差異,無法滿足預鑄專案成本管理與估算效益之需求與功能,而對企業盈虧預測之掌握及改善管理會造成影響。 本研究藉由文獻回顧描述專案成本管理之理論基礎,同時發現需要提高預鑄專案成本估算之效益;而估算策略之建立,在本研究中則以估算策略發展之程序來發展。藉此程序建立估算策略之結果,再經過實際蒐集180個估算案例之應用以進一步驗證其適用性。利用符合此策略之估算模式,可以有效達成有效供預鑄專案適用之目的。此外本研究建立之預鑄專案成本估算模式,在過程中結合了文獻理論及產業實務,由於善用架構及流程標準化,所以在成本估算本身對專案成本管理之貢獻,在功能性及策略性意義等方面,皆有可供相關研究者參考之處。 It is complicate that cost estimate toward precast projects integrates features from both manufacture and construction. This paper develops a strategy to solve conflicts and difficulty for estimating costs of precast projects. A theoretical strategy is built involving ten sub-modules to match related departments’ intentions, product features, customer desires, and manufacture processes. The data collection conducted in the study spends for months and consists of 180 precast projects. Appropriateness criteria of using the strategy to cases are developed before the evaluation. The contributions to both practice and research are to (1) standardize the processes of cost estimate, (2) integrate common software that is easy use and experience transferable as the tool to establish the modules, (3) construct a conceptual model benefiting cost estimate toward precast projects.