An Investigation of material waste management in prefabricated construction industry and developing a tool for effective management of waste


Thesis Type: Doctorate

Institution Of The Thesis: Middle East Technical University, Turkey

Approval Date: 2018

Thesis Language: English

Student: Babak Rahmani Mirshekarlou

Co-Supervisor: MUSTAFA TALAT BİRGÖNÜL, İREM DİKMEN TOKER

Abstract:

In order to formulate effective waste reduction strategies in construction projects, it is essential to continuously monitor and analyze the waste generation and improve the existing processes continuously. This requires to establish a waste benchmark, based on the previous experiences in the organization, to assist the project team in taking efficient and timely actions to prevent the waste at source, and enhance the corporate waste management capability. The current study is carried out to explore the waste management in prefabricated steel structure construction companies in Turkey and develop a process model using an integrated waste management tool, to facilitate and improve the efficiency of existing waste management procedures. A classified set of materials and potential waste causes were listed through detailed literature review, studying real project records and interviewing with experts in the sector. A questionnaire survey has been carried out in collaboration with the Turkish prefabricated steel structure building companies to investigate the current performance of companies in material waste management and identify the most waste-prone materials and the main causes of waste generation. Also, the existing deficiencies in waste management processes were explored and factors plugging the way of effective waste management were identified. An integrated waste management process model and a supporting application were developed for the Turkish prefabricated building companies, in order to facilitate waste estimation, management, monitoring and controlling. Finally, the developed tool, the “Waste Tracker”, was tested and verified by the sector professionals. The testing and verification process gave favorable results. Although the findings on waste-prone materials and waste management practices reflect the situation in the Turkish prefabricated construction industry, it is believed that the proposed process model as well as the tool are generic and be modified to other countries and industries after some modifications.