Technical and Economic Analysis of Replacing Traditional Concrete Irrigation Channels with Large-Scale Fiberglass Pipes: A Case Study (Irrigation and Drainage Network Utilization)

Document Type : Original Article

Authors

1 Department of Agricultural Systems Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.

2 Department of Civil Engineering, Engineering Faculty, Islamic Azad University, Sepidan Branch, Sepidan, Iran.

10.22044/jhwe.2025.13117.1018

Abstract

Over the past two decades, improving water transfer efficiency has become a major priority, especially given the significant drawbacks of traditional open concrete channels- such as high water loss due to seepage and evaporation, flow inefficiencies, and frequent maintenance needs. To address these challenges, many irrigation and drainage systems have shifted from conventional channels to pressurized or gravity-fed pipe systems. Among the most popular alternatives are Glass Reinforced Plastic (GRP) pipes, which have gained widespread acceptance in recent years. GRP pipes offer several advantages over concrete channels, both technically and economically. Not only do they provide superior strength, durability, and resistance to corrosion, but they also significantly reduce water loss during transfer. From a financial standpoint, GRP systems often prove more cost-effective—not just in initial installation, but also over the long term, thanks to lower maintenance requirements, reduced need for dredging, and shorter project completion times. When factoring in additional costs such as land acquisition and losses from seepage and evaporation, the overall life-cycle cost of GRP pipelines is considerably lower than that of traditional concrete channels. Moreover, the reliability of GRP pipes has been reinforced through rigorous short-term and long-term performance testing, conducted in accordance with internationally recognized ASTM and ISO standards. These assessments have boosted confidence among engineers, contractors, and project owners, making GRP an increasingly trusted choice for modern water conveyance systems. This study thoroughly examined and compared the technical and economic aspects of using concrete channels versus GRP pipes in irrigation and drainage networks. The findings demonstrate that GRP pipe systems offer a more efficient, sustainable, and economically viable solution, making them a wise choice for the future of water infrastructure.

Keywords

References

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Journal of Hydraulic and Water Engineering
Volume 2, Issue 2
January 2025
Pages 181-200

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