Assessment and Prioritization of Contractor Internal Schedule Delay Risks in Phnom Penh High-Rise Building Projects Using Relative Importance Index Method
Abstract
The rapid expansion of high-rise building projects in Phnom Penh has been accompanied by persistent schedule delays that significantly impact project performance. While external factors are often emphasized, contractor internal risks represent controllable factors requiring systematic assessment and prioritization. This study aims to identify and prioritize contractor internal delay risk factors in high-rise building projects in Phnom Penh through quantitative analysis of expert perceptions. A mixed-methods approach was employed, combining qualitative data collection through structured questionnaires with quantitative analysis using the Relative Importance Index (RII). Data were collected from 97 construction professionals involved in high-rise projects (exceeding 10 floors) in Phnom Penh during 2020–2025. Seventeen internal risk factors were assessed across probability (RII-P) and impact (RII-I) dimensions. Analysis identified three critical risks with Risk Scores ≥ 0.60: Poor Planning and Scheduling (RII-P: 0.81, RII-I: 0.83, Risk Score: 0.68), Cash Flow Problems (RII-P: 0.76, RII-I: 0.83, Risk Score: 0.64), and Ineffective Monitoring and Control (RII-P: 0.79, RII-I: 0.79, Risk Score: 0.62). Fourteen additional risks were classified as Medium Priority (Risk Scores: 0.46–0.56). Managerial and financial factors dominate internal delay risks in Phnom Penh's high-rise construction, suggesting contractors should prioritize planning systems, financial management, and monitoring controls to improve schedule performance. These findings have implications for similar developing construction markets, particularly in Indonesia.
References
Abaza, M. E., & Kisi, K. P. (2024). Lessons Learned from Construction Projects to prevent Scope Creep. Proceedings of 60th Annual Associated Schools, 5, 659-667.
Alemu, T. T., & Thakur, M. S. (2026). Stakeholder perceptions of delay causes in Orthodox church construction projects. Engineering, Construction and Architectural Management, 1-24. https://doi.org/10.1108/ECAM-06-2024-0697
Annamalah, S., Aravindan, K. L., & Ahmed, S. (2025). Resilience in the face of uncertainty: Navigating supply chain challenges through proactive risk surveillance and mitigation strategies among SMEs in ASEAN countries. F1000Research, 13, 1037. https://doi.org/10.12688/f1000research.153654.2
Assaf, S. A., & Al-Hejji, S. (2006). Causes of delay in large construction projects. International Journal of Project Management, 24(4), 349–357.
Balaji, S., Shreshta, L., & Sujatha, K. (2024). A Study on Risk Management in Corporate Business. Involvement International Journal of Business, 1(3), 197-209. https://doi.org/10.62569/iijb.v1i3.26
Battaglia, M., Ceglia, I., Calabrese, M., & Iandolo, F. (2025). Systemic risk management and stakeholder engagement: insights from business CSR disclosure. Corporate Social Responsibility and Environmental Management, 32(3), 4295-4314. https://doi.org/10.1002/csr.3186
Cubillos, R. A. A., Prada, M. D., Martinez, K. V., & Aguilar, G. M. (2024). Factors affecting labor productivity in the global construction industry: a critical review, classification and ranking. Scientia et Technica, 29(1), 18-33.
Cvetković, V. M., Renner, R., & Jakovljević, V. (2024). Industrial disasters and hazards: From causes to consequences A holis
Doloi, H., Sawhney, A., & Iyer, K. C. (2012). Structural equation model for investigating factors affecting delay in Indian construction projects. Construction Management and Economics, 30(10), 869–884.
Duale, A. Y., Hareru, W. K., Ghebrab, T., Mulugeta, S., & Gedefaye, T. (2025). Assessment of factors causing construction delays in building construction projects in Somaliland. Advances in Civil Engineering, 2025(1), 7915818.
El Khatib, M. (2025). Reclaiming the City: Strategies for Inclusive Urban Development in Beirut's Central District (Doctoral dissertation, Politecnico di Torino).
Famiyeh, S., Amoatey, C. T., Adaku, E., & Agbenohevi, C. S. (2017). Major causes of construction time and cost overruns: A case of selected educational sector projects in Ghana. Journal of Engineering, Design and Technology, 15(2), 181–198.
Frimpong, Y., Oluwoye, J., & Crawford, L. (2003). Causes of delay and cost overruns in construction of groundwater projects in a developing countries; Ghana as a case study. International Journal of Project Management, 21(5), 321–326.
Goni, K. M., Mohammed, A., Sundararajan, S., & Kassim, S. I. (2024). Proactive Risk Management in Smart Manufacturing: A Comprehensive Approach to Risk Assessment and Mitigation. In Artificial Intelligence Solutions for Cyber-Physical Systems (pp. 139-164). Auerbach Publications.
Haque, F., & Mathur, V. S. (2025). Construction Project Planning and Scheduling. In Handbook of Construction Project Management (pp. 135-187). Singapore: Springer Nature Singapore. https://doi.org/10.1007/978-981-96-7631-6_5
He, P. (2024). Effective Early Risk Detection in the Construction of High-rise Buildings in Kenya (a Case of Nairobi Metropolitan Area) (Doctoral dissertation, University of Nairobi).
Huang, S. (2025). Ai-driven early warning systems for supply chain risk detection: A machine learning approach. Academic Journal of Computing & Information Science, 8(9), 92-107.
Husain, T. (2024). Unveiling the Ripple Effects: A Deep Dive into Public Procurement Delays and Stakeholder Impacts in Bangladesh's Upazila Construction Projects. Humanities, 4(3), 97-104.
Kaliba, C., Muya, M., & Mumba, K. (2009). Cost escalation and schedule delays in road construction projects in Zambia. International Journal of Project Management, 27(5), 522–531.
Kaming, P. F., Olomolaiye, P. O., Holt, G. D., & Harris, F. C. (1997). Factors influencing construction time and cost overruns on high-rise projects in Indonesia. Construction Management and Economics, 15(1), 83–94.
Koya, S. A. (2025). Effective Leadership Strategies to Reduce Project Delays Resulting From Risk Management (Doctoral dissertation, Walden University).
Latif, M., Saleem, M., & Cheema, S. M. (2023). Analyzing the key factors contributing to project delays in the construction industry: A comprehensive study. Journal of Development and Social Sciences, 4(3), 936-944. https://doi.org/10.47205/jdss.2023(4-III)85
Le-Hoai, L., Lee, Y. D., & Lee, J. Y. (2008). Delay and cost overruns in Vietnam large construction projects: A comparison with other selected countries. KSCE Journal of Civil Engineering, 12(6), 367–377.
Memon, A. H., Rahman, I. A., & Azis, A. A. (2013). Factors affecting construction cost in Mara large construction project: Perspective of project management consultant. International Journal of Sustainable Construction Engineering and Technology, 2(2), 21–35.
Michael, I. (2025). Regulatory Hurdles and Permitting Delays.
Min, V., Matsumoto, K., Panuwatwanich, K., & Leungbootnak, N. (2025). Strategic construction waste management to promote sustainable development: developing a maturity model for building contractors. Engineering, Construction and Architectural Management. https://doi.org/10.1108/ECAM-02-2025-0234
Nunnally, J. C. (1978). Psychometric theory (2nd ed.). McGraw-Hill.
Nwal, S. S., Panuwatwanich, K., & Naing, M. (2024). Critical Factors Influencing the Performance of Public Housing Construction Projects in Myanmar. Journal of Construction in Developing Countries.
Odeh, A. M., & Battaineh, H. T. (2002). Causes of construction delay: Traditional contracts. International Journal of Project Management, 20(1), 67–73.
Oluwaseum, B. R. N. E., & Mogaka, D. (2025). Investigating the dynamics of delays in public building projects in Uganda. https://doi.org/10.59568/KJSET-2025-4-1-03
Saeed, F. (2025). Enhanced Constraints Representation and MTSP Schedule Optimization for Repetitive Projects Considering Environmental Sustainability.
Sambasivan, M., & Soon, Y. W. (2007). Causes and effects of delays in Malaysian construction industry. International Journal of Project Management, 25(5), 517–526.
Seyed Nezhad Fahim, S. R., & Gholami Gelsefid, F. (2023). The impact of internal and external driving forces and strategic decisions on supply chain risk management (case study: automotive industry). Journal of applied research on industrial engineering, 10(3), 472-491. https://doi.org/10.22105/jarie.2022.342727.1470
Siamuzwe-Manase, V., Halcro, K. R., Kumar, B., & Skitmore, M. (2024). Project-oriented strategic management of UK construction firms–towards corporate diversification: critical literature review. Built Environment Project and Asset Management, 14(6), 937-955. https://doi.org/10.1108/BEPAM-11-2023-0197
Swalih, M. M., Ram, R., & Tew, E. (2024). Environmental management accounting for strategic decision‐making: A systematic literature review. Business Strategy and the Environment, 33(7), 6335-6367.
Tadayon, M., Jaafar, M., & Nasri, E. (2012). An assessment of risk identification in large construction projects in Iran. Journal of Construction in Developing Countries, 17(1), 57–69.
Vahedi Nikbakht, M., Gheibi, M., Montazeri, H., Yeganeh Khaksar, R., Moezzi, R., & Vadiee, A. (2024). Identification and ranking of factors affecting the delay risk of high-rise construction projects using AHP and VIKOR methods. Infrastructures, 9(2), 24. https://doi.org/10.3390/infrastructures9020024
Warren, S. J., Boston Vogt, E., Tincher, B., & Yang, J. (2025). Enhancing quality assurance through strategic artificial intelligence integration: a framework for higher education digital transformation. Quality Assurance in Education. https://doi.org/10.1108/QAE-09-2024-0183
World Bank. (2022). Cambodia Economic Update: Cambodia Climbing the Ladders. World Bank Group.
Yang, J. B., & Ou, S. F. (2008). Using structural equation modeling to analyze relationships among key causes of delay in construction. Canadian Journal of Civil Engineering, 35(4), 321–332.
Yap, K. S. (2023). Upgrading informal settlements: Experiences from Asia. Upgrading Informal Settlements: Experiences from Asia.
Zavadskas, E. K., Turskis, Z., & Tamošaitienė, J. (2010). Risk assessment of construction projects. Journal of Civil Engineering and Management, 16(1), 33–46.
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