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Dergiler / Gazi University Journal of Science / 2026 / Volume: 39 Issue: 3

Preliminary Estimation of Wastewater Treatment Plant Construction Costs Using Regression Analysis

Samet Serkan Özek(GAZI UNIVERSITY, INSTITUTE OF SCIENCE, CIVIL ENGINEERING (DR))0009-0001-6736-8702
Mürsel Erdal(GAZI UNIVERSITY, FACULTY OF TECHNOLOGY, DEPARTMENT OF CIVIL ENGINEERING, CIVIL ENGINEERING PR.)0000-0002-9338-6162
Sayfa
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Yayın Tarihi
2026-09-01
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Nevertheless, it may not be sufficient as a standalone approach for detailed budgeting, tender preparation, or precise cost determination processes, where higher levels of accuracy are required, and should be supported by more comprehensive analytical methods.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:This study examined cost data for 130 wastewater treatment plant projects tendered by a public institution in Turkey between 2008 and 2022, and regression analysis was conducted to estimate the construction costs of these projects.
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Temel Bulgular & Veri:Population projection, flow rate, aeration tank volume, sedimentation tank volume, and number of units are used as independent variables in the data set.
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Sonuç & Katkı:Nevertheless, it may not be sufficient as a standalone approach for detailed budgeting, tender preparation, or precise cost determination processes, where higher levels of accuracy are required, and should be supported by more comprehensive analytical methods.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:2008 Verileri
⚙️Değişkenler:Wastewater treatment plant · Cost estimation · Regression analysis (RA)

Abstract

This study examined cost data for 130 wastewater treatment plant projects tendered by a public institution in Turkey between 2008 and 2022, and regression analysis was conducted to estimate the construction costs of these projects. Population projection, flow rate, aeration tank volume, sedimentation tank volume, and number of units are used as independent variables in the data set. The analysis determined that the independent variables had a significant impact on the total construction cost, and the developed model achieved an R² value of 0.763. The validity of the model was tested on three sample projects, and the accuracy rates between estimated and actual costs were determined to range from 92.56% to 97.58%. Therefore, the proposed model can be considered a suitable tool for preliminary feasibility assessments, early-stage planning, and approximate cost estimations. Nevertheless, it may not be sufficient as a standalone approach for detailed budgeting, tender preparation, or precise cost determination processes, where higher levels of accuracy are required, and should be supported by more comprehensive analytical methods.

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Bu Makaleye Atıf Yap

Özek, S. S., Erdal, M. (2026). Preliminary Estimation of Wastewater Treatment Plant Construction Costs Using Regression Analysis. Gazi University Journal of Science, Volume: 39 Issue: 3. https://doi.org/10.35378/gujs.1840026

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