System Engineering and Productivity

System Engineering and Productivity

Investigating the Causes of Delays and Cost Increases in Urban Development Projects and Providing a Suitable Implementation solution Based on Value Engineering (Case Study: Karaj Subway)

Document Type : Research Paper

Authors
Mozaffar Sadeghi 1
Ali Mohammad Ahmadvand 2
1 Corresponding author: M.Sc.,, Department of Civil Engineering, Faculty of Civil and Architectural Engineering , University of Eyvanekey, Eyvanekey, Iran
2 Professor, Department of Industrial Engineering, Faculty of Industrial Engineering, University of Eyvanekey, Eyvanekey, Iran
10.22034/sep.2023.704329
Abstract
Delays in construction projects are one of the most common issues and problems in the implementation of these types of projects. On the other hand, one of the solutions that has been effective in reducing the delay of construction projects in recent years is the value engineering solution. Therefore, the purpose of this research is to investigate the causes of delays and increased costs of urban construction projects and to present an appropriate implementation solution based on value engineering in the Karaj Metro. The statistical sample of this research includes 61 employers, consultants, and contractors of contracting companies active in the Karaj Metro project. In order to identify and extract the most important factors causing delays in the Karaj Metro project, the library study method was used. Then, based on the extracted factors, a questionnaire was prepared based on the criteria related to each of these factors. After confirming the reliability and validity, the questionnaires were distributed among the statistical sample. After collecting the data from the questionnaires, the Friedman test was used to prioritize the factors affecting the occurrence of delays. The results showed that the most important factors affecting delays in the Karaj Metro project are factors resulting from the performance of contractors with an average rating of 7.31. Also, among the factors related to value engineering, the highest average rating was assigned to the performance component, which indicates that this component should be considered more than other value engineering components in the implementation of construction projects.
Keywords
Causes of delay
Construction projects
Implementation strategy
Value engineering
Karaj Subway

Copyright ©, Mozaffar Sadeghi, Ali Mohammad Ahmadvand

 

License

This article is released under the Creative Commons Attribution (CC BY 4.0) license. Anyone is free to copy, share, translate, and adapt this article for any purpose, whether commercial or non-commercial, as long as proper citation is given to the authors and original publication.

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System Engineering and Productivity
Volume 2, Issue 4 - Serial Number 5
Serial No. 5, Winter Quarterly
Winter 2023
Pages 1-22

  • Receive Date 28 July 2022
  • Revise Date 22 January 2023
  • Accept Date 30 January 2023
  • First Publish Date 20 February 2023
  • Publish Date 20 February 2023