建築工程臨時性點工需求與工程成本影響之研究

Impact of the Temperory Labor Demands on Building Construction Cost

楊智松(Chih-Sung Yang)

指導教授 ： 郭斯傑

國立臺灣大學/工學院/土木工程學研究所/碩士(2017年)

https://doi.org/10.6342/NTU201701543

摘要

臨時性點工的成本一直處於灰色模糊地帶，也是營造廠的利潤所在，如何找出關鍵影響臨時性點工數量的因子，進而控制因子達到節省成本的目的，一直是工程界需要解決的問題，無奈工程界面過於繁雜，且工程的屬性有其差異性，不同的案例間未必可以套用。
　　本研究主要探討臨時性點工對於工程的成本比例合理範圍、影響臨時性點工與工程成本的關鍵因子，以及臨時性點工數量與工程成本的關係。透過假設檢定分析影響總點工數與點工總金額的關鍵因子，再以迴歸預測模型分析各關鍵因子與總點工數及點工總金額的關係。
　　透過假設檢定研究結果顯示，樓地板面積、建築興建樓層、單位工程造價、工地負責人年資對於點工數量及點工總金額影響顯著。開挖深度、構造形式及總工期對於點工數量及點工總金額影響不顯著而予以排除。
　　在關鍵因子與總點工數及點工總金額的迴歸預測模型關係式分析上，本研究發現總樓地板面積、興建樓層數、單位工程造價及工地負責人年資四個自變數的預測與結果相符。而四個自變數與總點工數的模型解釋力達到71.2%的變異。
　　本研究建議，關鍵因子將可對於營造廠在調整成本預算時，針對不同的樓地板面積、興建樓層數、單位工程造價與工地負責人年資調整隱含成本的金額，在成本預算規劃上提供可動態調整的參考指標。

關鍵字

臨時性點工 ； 關鍵因子 ； 迴歸預測模型 ； 隱含成本 ； 假設檢定

並列摘要

The cost of miscellaneous workers is a gray blur, but also the profits of the engineering company. It is the current engineering problems that how to find out the key factors affecting the quantity of general laborer and then control the factors to achieve the purpose of cost savings. However, the engineering interface is very complicated and each project has its own characteristics and attributes, the results of other projects cannot be directly applied.
　　This study focuses on the proportion of the cost of the project, the key factors affecting the quantity and cost of the project, and the relationship between the quantity of general laborer and the cost of the project. In this study, the key factors are analyzed using hypothesis testing, and then the relationship between the key factors for the quantity and the total amount of work is analyzed using the regression prediction model.
　　The results show that the floor area, floor height, unit project cost, and site personnel qualification factors have significant impacts on the quantity and total amount of general laborer. While the excavation depth, the structure form and the total construction period have no significant influence.
　　In the regression analysis, this study found that the prediction results using independent variables, total floor area, floor height, unit cost and the person in charge of the site, are in good agreement with the observed. The explanatory power of the model of the quantity of general laborer reaches 71.2%
　　This study suggests that the key factors can assist the engineering company to calculate the amount of implicit cost for projects of different floor areas, floor heights, unit project costs and qualifications of the person in charge of the site. This can serve as a reference indicator to provide dynamic adjustment of budget planning.

並列關鍵字

General laborer ； key factor ； regression model ； implicit cost ； hypothesis Testing

參考文獻

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