Cover
Vol. 16 No. 1 (2025)

Published: February 16, 2025

Pages: 48-60

Research Paper

Construction Methods and Their Impact on the Productivity of the Construction Projects Site (Iraq Case Study)

Abstract

This study aims to investigate the impact of various construction methods on labor productivity in Iraq, focusing on traditional, prefabricated steel structures, precast concrete, and mechanical or self-build construction techniques. The research employs a descriptive-analytical methodology, utilizing a structured survey distributed to 200 participants from different construction industry sectors, including engineers, contractors, and field workers. The survey examines key indicators of labor productivity, such as task completion speed, work quality, labor costs, safety, and project cost.The findings reveal significant differences in labor productivity across the construction methods. Traditional construction methods moderately impacted task completion speed and work quality but were less efficient in terms of cost reduction and safety. On the other hand, prefabricated and precast concrete methods demonstrated improvements in work quality, safety, and cost efficiency, although with some limitations regarding flexibility. Steel structures offered enhanced durability and faster construction times, while mechanical and self-build methods utilizing automation significantly reduced labor costs and accelerated the construction process.Based on these results, the study recommends incorporating modern construction methods, such as prefabricated and mechanical techniques, to improve overall productivity in the Iraqi construction sector. Additionally, it emphasizes the importance of training and adapting to these advanced methods to ensure long-term efficiency, safety, and cost-effectiveness in construction projects.

References

  1. M. A. J. Q. Franco, P. Pawar, and X. Wu, “Green building policies in cities: A comparative assessment and analysis,” Energy Build, vol. 231, p. 110561, 2021, doi: https://doi.org/10.1016/j.enbuild.2020.110561.
  2. A. Soekiman, K. Pribadi, B. Soemardi, and R. Wirahadikusumah, “Factors Relating to Labor Productivity Affecting the Project Schedule Performance in Indonesia,” Procedia Eng, vol. 14, pp. 865–873, Dec. 2011, doi: 10.1016/j.proeng.2011.07.110.
  3. M. R. Kadir, W. P. Lee, M. S. Jaafar, S. Sapuan, and A. Ali, “Factors affecting construction labour productivity for Malaysian residential projects,” Structural Survey, vol. 23, pp. 42–54, Feb. 2005, doi: 10.1108/02630800510586907.
  4. K. El-Gohary and R. Eskander, “Factors Influencing Construction Labor Productivity in Egypt,” Journal of Management in Engineering, vol. 30, pp. 1–9, Jan. 2014, doi: 10.1061/(ASCE)ME.1943-5479.0000168.
  5. A. Visca, L. Di Gregorio, E. Clagnan, and A. Bevivino, “Sustainable strategies: Nature-based solutions to tackle antibiotic resistance gene proliferation and improve agricultural productivity and soil quality,” Environ Res, vol. 248, p. 118395, 2024, doi: https://doi.org/10.1016/j.envres.2024.118395.
  6. A. Enshassi, S. Mohamed, and P. Mayer, “Factors affecting labour productivity in building projects in the Gaza strip,” JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT, vol. 13, pp. 245–254, Dec. 2007, doi: 10.3846/13923730.2007.9636444.
  7. F. M. Al-Zwainy, A. Mohammed, and H. Aljumaily, “Using Multivariable Linear Regression Technique for Modeling Productivity Construction in Iraq,” Open Journal of Civil Engineering, vol. 03, pp. 127–135, Jan. 2013, doi: 10.4236/ojce.2013.33015.
  8. S. Durdyev and J. Mbachu, “On-site Labour Productivity of New Zealand Construction Industry: Key Constraints and Improvement Measures,” Australasian Journal of Construction Economics and Building, vol. 11, pp. 18–33, Sep. 2011, doi: 10.5130/ajceb.v11i3.2120.
  9. N. Ailabouni, N. Painting, and P. Ashton, “Factors affecting employee productivity in the UAE construction industry,” Association of Researchers in Construction Management, ARCOM 2009 - Proceedings of the 25th Annual Conference, pp. 555–564, Jan. 2009.
  10. R. Eskander, S. Hafez, E. Morgan, M. Mohammed, and E. Ahmed, “Critical factors affecting construction labor productivity in Egypt,” Feb. 2014.
  11. A. J.Dakhil, Z. M.Naji, and S. K.Faleh, “Factors Affecting Construction Labour Productivity in Iraq Using Basra City As a Case Study,” Kufa Journal of Engineering, vol. 8, no. 3, pp. 55–75, 2017, doi: 10.30572/2018/kje/8031157.
  12. A. Makulsawatudom, M. Emsley, and K. Sinthawanarong, “Critical Factors Influencing Construction Productivity in Thailand,” Construction, vol. 14, no. 3, pp. 1–6, 2004.
  13. B. Hickson and L. Ellis, “Factors affecting Construction Labour Productivity in Trinidad and Tobago,” The Journal of the Association of Professional Engineers of Trinidad and Tobago, vol. 42, Apr. 2014.
  14. H. Jang, K. Kim, J. H. Kim, and J. Kim, “Labour productivity model for reinforced concrete construction projects,” Construction Innovation: Information, Process, Management, vol. 11, pp. 92–113, Jan. 2011, doi: 10.1108/14714171111104655.
  15. I. Mahamid, “Common risks affecting time overrun in road construction projects in Palestine: Contractors’ perspective,” Australasian Journal of Construction Economics and Building, vol. 13, p. 45, Jun. 2013, doi: 10.5130/ajceb.v13i2.3194.
  16. A. M. R. Mahjoob, A. M. Burhan, R. A. R. Ibraheem, O. A. Al-Juboori, and H. A. Rashid, “The adoption of green management in Iraqi construction industry: The challenges and benefits,” Periodicals of Engineering and Natural Sciences, vol. 10, no. 5, pp. 101–114, 2022, doi: 10.21533/pen.v10i5.3324.
  17. N. Shrestha, “Factor Analysis as a Tool for Survey Analysis,” Am J Appl Math Stat, vol. 9, no. 1, pp. 4–11, 2021, doi: 10.12691/ajams-9-1-2.
  18. P. O. Olomolaiye, A. K. W. Jayawardane, and F. Harris, Construction Productivity Management. in Chartered Institute of Building Series. Longman, 1998. [Online]. Available: https://books.google.iq/books?id=fzFPAAAAMAAJ
  19. K. J. Shashank, S. Hazra, and K. N. Pal, “Analysis of Key Factors Affecting the Variation of Labour Productivity in Construction Projects,” 2014. [Online]. Available: https://api.semanticscholar.org/CorpusID:15553119
  20. P. Bijalwan, A. Gupta, A. Johri, and M. Asif, “The mediating role of workplace incivility on the relationship between organizational culture and employee productivity: a systematic review,” Cogent Soc Sci, vol. 10, no. 1, p. 2382894, Dec. 2024, doi: 10.1080/23311886.2024.2382894.
  21. T. H. Randolph and N. C. L., “Quantitative Effects of Construction Changes on Labor Productivity,” J Constr Eng Manag, vol. 121, no. 3, pp. 290–296, Sep. 1995, doi: 10.1061/(ASCE)0733-9364(1995)121:3(290).
  22. J. L. Davis, “Science , Fiction , and the Hollywood Machine : Creators and Consultants , Consensus and Conflict,” 2022.
  23. B. Nikmehr, M. R. Hosseini, I. Martek, and E. K. Zavadskas, “B Nikmehr; M Hosseini; I Martek ; E Zavadskas; J Antucheviciene -2021- Digitalization as a Strategic Means of Achieving Sustainable Efficiencies in Construction Management. A Critical Review.pdf,” Sustainability (Switzerland), vol. 13, pp. 1–12, 2021.
  24. M. N. Yabanigül and D. Gulec Ozer, “Exploring Architectural Units Through Robotic 3D Concrete Printing of Space-Filling Geometries,” Buildings, vol. 15, no. 1, 2025, doi: 10.3390/buildings15010060.
  25. A. Laureys, R. Depraetere, M. Cauwels, T. Depover, S. Hertelé, and K. Verbeken, “Use of existing steel pipeline infrastructure for gaseous hydrogen storage and transport: A review of factors affecting hydrogen induced degradation,” J Nat Gas Sci Eng, vol. 101, p. 104534, 2022, doi: https://doi.org/10.1016/j.jngse.2022.104534.
  26. A. Keshmiry, S. Hassani, U. Dackermann, and J. Li, “Assessment, repair, and retrofitting of masonry structures: A comprehensive review,” Constr Build Mater, vol. 442, p. 137380, 2024, doi: https://doi.org/10.1016/j.conbuildmat.2024.137380.
  27. K. W. See et al., “Critical review and functional safety of a battery management system for large-scale lithium-ion battery pack technologies,” Int J Coal Sci Technol, vol. 9, no. 1, 2022, doi: 10.1007/s40789-022-00494-0.
  28. E. Cakici, I. Kucukkoc, and M. Akdemir, “Advanced constraint programming formulations for additive manufacturing machine scheduling problems,” Journal of the Operational Research Society, pp. 1–16, doi: 10.1080/01605682.2024.2382867.
  29. G. Robles, A. Stifi, J. Ponz-Tienda, and S. Gentes, “Labor Productivity in the Construction Industry -Factors Influencing the Spanish Construction Labor Productivity-,” International Journal of Civil, Architectural, Structural and Construction Engineering, vol. 8, pp. 999–1008, Jan. 2014.
  30. Z. Jiaying, C. J. C. P., C. Weiwei, and C. Keyu, “Digital Twins for Construction Sites: Concepts, LoD Definition, and Applications,” Journal of Management in Engineering, vol. 38, no. 2, p. 4021094, Mar. 2022, doi: 10.1061/(ASCE)ME.1943-5479.0000948.
  31. A. U. Khan, L. Huang, E. Onstein, and Y. Liu, “Overview of Emerging Technologies for Improving the Performance of Heavy-Duty Construction Machines,” IEEE Access, vol. 10, pp. 103315–103336, 2022, doi: 10.1109/ACCESS.2022.3209818.
  32. W. Yi and A. Chan, “Critical Review of Labor Productivity Research in Construction Journals,” Journal of Management in Engineering, vol. 30, pp. 214–225, Feb. 2014, doi: 10.1061/(ASCE)ME.1943-5479.0000194.
  33. S. P. Stier et al., “Materials Acceleration Platforms (MAPs) Accelerating Materials Research and Development to Meet Urgent Societal Challenges,” Advanced Materials, vol. 2407791, pp. 1–26, 2024, doi: 10.1002/adma.202407791.