كتاب
Examining the impacts of early cost drivers on contingencies
| العنوان: | Examining the impacts of early cost drivers on contingencies |
|---|---|
| المؤلفون: | Xiong, Bo, Xia, Bo |
| المساهمون: | Ashuri, B, Irizarry, J, Castro-Lacouture, D |
| المصدر: | Construction Research Congress 2014: Construction in a Global Network [Proceedings of the 2014 Construction Research Congress] |
| بيانات النشر: | American Society of Civil Engineers |
| سنة النشر: | 2014 |
| المجموعة: | Queensland University of Technology: QUT ePrints |
| مصطلحات موضوعية: | Contingencies, Cost drivers, Cost overrun, Path analysis |
| الوصف: | The accuracy of early cost estimates is critical to the success of construction projects. The selected tender price (clients' building cost) is usually seen in previous research as a holistic dependent variable when examining early stage estimates. Unlike other components of construction cost, the amount of contingencies is decided by clients/consultants with consideration of early project information. Cost drivers of contingencies estimates are associated with uncertainty and complexity, and include project size, schedule, ground condition, construction site access, market condition and so on. A path analysis of 133 UK school building contracts was conducted to identify impacts of nine major cost drivers on the determination of contingencies by different clients/cost estimators. This research finds that gross floor area (GFA), schedule and requirement of air conditioning have statistically significant impacts on the contingency determination. The mediating role of schedule between gross floor area and contingencies (GFA→Schedule→Contingencies) was confirmed with the Soble test. The total effects of the three variables on contingencies estimates were obtained with the consideration of this indirect effect. The squared multiple correlation (SMC) of contingencies (=0.624) indicates the identified three variables can explain 62.4% variance of contingencies, and it is comparatively satisfactory considering the heterogeneity among different estimators, unknown estimating techniques and different projects |
| نوع الوثيقة: | book part |
| اللغة: | unknown |
| العلاقة: | Xiong, Bo & Xia, Bo (2014) Examining the impacts of early cost drivers on contingencies. In Ashuri, B, Irizarry, J, & Castro-Lacouture, D (Eds.) Construction Research Congress 2014: Construction in a Global Network [Proceedings of the 2014 Construction Research Congress]. American Society of Civil Engineers, United States of America, pp. 1518-1527.; https://eprints.qut.edu.au/71855Test/; Science & Engineering Faculty; School of Civil Engineering & Built Environment |
| الإتاحة: | https://doi.org/10.1061/9780784413517.155Test https://eprints.qut.edu.au/71855Test/ |
| حقوق: | Consult author(s) regarding copyright matters ; This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au |
| رقم الانضمام: | edsbas.4E17124C |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |