Diagnoses the causes of cost deviation in Iraqi construction projects

Eman Mahde; Nidal A. Jasim

doi:10.24237/djes.2021.14304

Authors

Eman Mahde
affulla770@gmail.com
Department of Civil Engineering, University of Diyala, 32001 Diyala, Iraq
Nidal A. Jasim Department of Civil Engineering, University of Diyala, 32001 Diyala, Iraq

Keywords:

Cost deviation, Root cause analysis, Fishbone diagram, 5- Why analysis, Construction project, Pareto Chart

Abstract

There are challenges with cost deviation and time overruns in every project in the building sector, whether they're residential projects, infrastructure projects, or anything else. The study aims to find the most important causes of cost deviation in a construction project. The researcher depends on Root Cause Techniques. These techniques are a good choice for diagnosing the root causes of cost deviation in a construction project. Many roots cause analysis tools have emerged from the literature as generic standards for identifying root causes such as the Fishbone Diagram, Pareto Chart, and the Five-Why techniques. This study diagnosed nineteen causes of cost deviation in the selected project (Dar Al- Nahrain building), These causes can be classified into three categories (planning causes, designing causes, and execution causes). According to Pareto analysis, the most important reasons for cost deviation are 10 out of nineteen causes. According to the Pareto chart above, the designing causes group (C2) and the planning cause group (C1) are responsible for 80% of the problem. As a result, focusing on these two major causes will solve 80% of the problem's project deviation in building projects. The results were filtered using the 5-Why analysis, which concluded that the project's cost deviation was due to insufficient project information, which is the root cause for the planning causes group, unclear owner requirements for the designing causes group, and changes in orders for the execution causes group.

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