POST TENSION DESIGN OF SLAB AND BEAM


EOI: 10.11242/viva-tech.01.09.16

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Citation

Aniket Raut, Vaibhav Pawar, PROF.PRATIBHA PATIL, "POST TENSION DESIGN OF SLAB AND BEAM", VIVA-IJRI Volume 1, Issue 9, Article 01, pp. 1-21, 2026. Published by Civil Engineering Department, VIVA Institute of Technology, Virar, India.

Abstract

This project presents the design and analysis of post-tensioned (PT) beams and slabs using ADAPT Builder software, focusing on enhancing structural efficiency, durability, and serviceability. Prestressing introduces compressive forces in concrete members prior to loading, effectively controlling deflection, cracking, and material usage. Both bonded and unbonded post-tensioning systems are explored, alongside pre-tensioning methods, to evaluate their performance in beams and slabs of various spans. A comprehensive literature survey was conducted, and data on concrete grade, steel properties, beam and slab geometry, and loading conditions were collected in accordance with IS 1343:2012 and IS 456:2000. The PT members were modeled in ADAPT Builder, and analysis was performed to determine bending moments, shear forces, tendon stresses, and deflections. Optimization of tendon profiles and prestress forces ensured compliance with Ultimate and Serviceability Limit States, while minimizing material usage. The study demonstrates that post-tensioning allows longer spans, reduced slab thickness, and improved crack control compared to conventional reinforced concrete. The project highlights the advantages of software- assisted design, enabling accurate, efficient, and code-compliant solutions. Future work includes BIM integration, AI optimization, sustainable materials, and automation, emphasizing the evolving role of PT technology in modern civil engineering.

Keywords

Post-tensioned concrete, slab and beam design, structural analysis, tendon layout, prestressing, load optimization, deflection control, moment and shear calculation, construction efficiency, serviceability.

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