An Investigation into the Factors Influencing the Reduction of Construction Materials Wastage in Erbil City- KRG-Iraq

  • Khalil Ismail Wali Department of Civil Engineering, College of Engineering, Salahaddin University-Erbil, Kurdistan Region, Iraq.
Keywords: Wastage Reduction; Factors Influencing; Construction Materials; Waste Management

Abstract

The aim of this study is to identify the factors affecting the construction material waste generation and to determine the magnitude of construction waste material in Erbil city. To achieve this study, a form of a questionnaire was prepared comprised of the factors influencing the waste generation of construction material, and assessment of seventeen different construction materials was selected to examine the approximate magnitude of their waste. The survey data was analyzed by adopting the relative important index (RII) method. The result of the analysis revealed that the top significant causes of wastage of materials on construction projects were due to the lack of on-site waste management plans; frequent changes to design, lack of supervision, improper storing of materials; lack of possibilities to order small quantities; lack of skilled workers. Also  the study found that the waste percentage of materials used ranged from 3.3% to  8.5%., and the waste percentage of fine aggregate, coarse aggregate, and timber were in a range of 6% to 7% while the waste of cement, steel reinforcement, concrete, concrete block and brick in a range of 5% to 6%, whereas the waste in gypsum reached 8.5%. Furthermore, the study found that poor planning and rework contributing as a significant aspect of waste generation in Erbil city.

References

AJAYI, S. O., OYEDELE, L. O., BILAL, M., AKINADE, O. O., ALASKA, H. A. & OWOLABI, H. A. 2017. Critical management practices influencing on-site waste minimization in construction projects. Waste management, 59, 330-339.
AL-HAJJ, A. & ISKANDARANI, T. Reducing waste generation on the UAE construction sites. 7th International Conference on Innovation in Architecture, Engineering and Construction, 2012.
ALARCÓN, L. F., DIETHELM, S. & ROJO, O. Collaborative implementation of lean planning systems in Chilean construction companies. Tenth Annual Conference of the International Group for Lean Construction (IGLC-10), August, Brazil, 2002. 1-11.
BANSAL, S. & SINGH, S., 2014. A sustainable approach towards the construction and demolition waste. International Journal of Innovative Research in Science, Engineering and Technology, 3, 1262-1269.
BOSSINK, B. & BROUWERS, H., 1996. Construction waste: quantification and source evaluation. Journal of construction engineering and management, 122, 55-60.
DAVIS, G., PHILLIPS, P. S., READ, A. D. & IIDA, Y. 2006. Demonstrating the need for the development of internal research capacity: Understanding recycling participation using the Theory of Planned Behaviour in West Oxfordshire, UK. Resources, Conservation and Recycling, 46, 115-127.
ENSHASSI, A. 1996. Materials control and waste on building sites: Data in the study was obtained from 86 housing projects in several locations in the Gaza Strip. Building Research and Information, 24, 31-34.
FADIYA, O. O., GEORGAKIS, P., CHINYIO, E. & AKADIRI, P. 2013. Analyzing the perceptions of UK building contractors on the contributors to the cost of construction plant theft. Journal of Financial Management of Property and Construction, 18, 128-141.
FORMOSO, C. T., ISATTO, E. L. & HIROTA, E. H. Method for waste control in the building industry. Proceedings IGLC, 1999. 325.
HINTON, P., BROWNLOW, C., MCMURRAY, I. & COZENS, B. 2004. Using SPSS to analyze questionnaires: Reliability. SPSS explained, 356-366.
JAIN, M. 2012. Economic Aspects of Construction Waste Materials in terms of cost savings–A case of Indian Construction Industry. International Journal of Scientific and Research Publications, 2, 1-7.
KAVITHRA, S., AMBIKA, D. & SHANKARI, R. S. 2017. A REVIEW ON QUANTIFIED IMPACTS OF CONSTRUCTION LABOUR PRODUCTIVITY TOWARDS PROJECT PERFORMANCE.
KOSKELA, L. 1992. Application of the new production philosophy to construction, Stanford University Stanford, CA.
SAWANT SURENDRA, B., MANOJ, H. & MADHAV, K. 2016. Impact of the Construction Waste on the Cost of the Project. International Journal of Engineering Research Volume, 126-128.
SINGH, T. S., 2015. Management of Construction Waste Materials: A Review. International Journal of Geology, Agriculture and Environmental Sciences, 3.
WYATT, D., 1978. Material management, Part I. Occasional Paper: The Chartered Institute of Building.
YOCKEY, R. D., 2018. SPSS Demystified: A simple guide and reference, Routledge.
Published
2020-09-08
How to Cite
Wali, K. (2020) “An Investigation into the Factors Influencing the Reduction of Construction Materials Wastage in Erbil City- KRG-Iraq”, Zanco Journal of Pure and Applied Sciences, 32(4), pp. 1-11. doi: 10.21271/ZJPAS.32.4.1.
Section
Mathematics ,Physics and Engineering Researches