Comparative Study on RCC Raft Foundation and Prestressed Concrete Raft Foundation for Multistory Building

  • Unique Paper ID: 193542
  • PageNo: 1077-1087
  • Abstract:
  • The use of raft foundations has increased in recent years as they are considered suitable and economical for multistory and high-rise structures constructed on soils with low bearing capacity. In a mat foundation, loads transferred from the superstructure are uniformly distributed over the soil surface, making it effective for weak soil conditions. Such foundations are capable of carrying heavy vertical loads and help in controlling total settlement, differential settlement, and overturning of structures within permissible limits. The raft/ mat foundations are generally constructed as reinforced concrete slabs that support and transfer structural loads safely to the underlying soil while reducing differential settlement. In addition, the application of post-tensioning techniques has been increasing due to their structural advantages. The use of post-tensioning enables achievement of required structural performance with reduced member size, making it an economical alternative without compromising structural stability. In developing countries such as India, the advantages of prestressing, particularly post-tensioning, are yet to be fully recognized. Considering the significant benefits of post-tensioned systems compared to conventional reinforced concrete structures, the present study attempts to compare the structural behavior and efficiency of post-tensioned raft (mat) foundations with reinforced concrete raft foundations. Both systems are analyzed using SAFE and ETABS software based on the design methodologies. The study aims to evaluate the performance and economic feasibility of both foundation systems for multistorey building applications under similar loading and soil conditions.

Copyright & License

Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

BibTeX

@article{193542,
        author = {Omkar Kailas Pawar and Prof. P. V. Muley and Dr. S. A. Rasal},
        title = {Comparative Study on RCC Raft Foundation and Prestressed Concrete Raft Foundation for Multistory Building},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {12},
        number = {10},
        pages = {1077-1087},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=193542},
        abstract = {The use of raft foundations has increased in recent years as they are considered suitable and economical for multistory and high-rise structures constructed on soils with low bearing capacity. In a mat foundation, loads transferred from the superstructure are uniformly distributed over the soil surface, making it effective for weak soil conditions. Such foundations are capable of carrying heavy vertical loads and help in controlling total settlement, differential settlement, and overturning of structures within permissible limits. The raft/ mat foundations are generally constructed as reinforced concrete slabs that support and transfer structural loads safely to the underlying soil while reducing differential settlement. In addition, the application of post-tensioning techniques has been increasing due to their structural advantages. The use of post-tensioning enables achievement of required structural performance with reduced member size, making it an economical alternative without compromising structural stability. In developing countries such as India, the advantages of prestressing, particularly post-tensioning, are yet to be fully recognized. Considering the significant benefits of post-tensioned systems compared to conventional reinforced concrete structures, the present study attempts to compare the structural behavior and efficiency of post-tensioned raft (mat) foundations with reinforced concrete raft foundations. Both systems are analyzed using SAFE and ETABS software based on the design methodologies. The study aims to evaluate the performance and economic feasibility of both foundation systems for multistorey building applications under similar loading and soil conditions.},
        keywords = {Post-tensioned (PT), Reinforced Concrete (RCC), Raft (Mat) Foundation, Multistorey Buildings, Structural Performance, SAFE Software, ETAB Software, Foundation Design, Settlement, Soil Bearing Capacity.},
        month = {March},
        }

Cite This Article

Pawar, O. K., & Muley, P. P. V., & Rasal, D. S. A. (2026). Comparative Study on RCC Raft Foundation and Prestressed Concrete Raft Foundation for Multistory Building. International Journal of Innovative Research in Technology (IJIRT), 12(10), 1077–1087.

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