International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 10 Issue: 07 | July 2023 www.irjet.net p-ISSN: 2395-0072 © 2023, IRJET | Impact Factor value: 8.226 | ISO 9001:2008 Certified Journal | Page 528 Structural Analysis of Unbonded Post-Tensioned Shear Wall Kshitija V. Managaonkar 1 , Dr. Praphulla K. Deshpande 2 1 M. Tech Student, Structural Engineering- Applied Mechanics Department, Government College of Engineering, Karad, Satara, Maharashtra, India. 2 Professor, Applied Mechanics Department, Government College of Engineering, Ratnagiri, Maharashtra, India. ------------------------------------------------------------------------***--------------------------------------------------------------------------- Abstract- The project examines the significance of utilising a shear wall as a key structural element. The goal of the current paperwork is to review numerous studies on improving shear walls and their response to lateral stresses, wind load and seismic forces. Shear walls respond as a progressive ductile failure and avoid brittle shear failure. In this paper, a building was designed without the shear wall, with a shear wall and with a prestressed shear wall using ETabs. All these 3 types of buildings are compared based on displacement, story drift and % steel requirement. The results show a significant decrement regarding considered parameters. The steel requirement is decreased from 0.42% to 0.26% for prestressed shear walls. Keywords: Shear wall, prestressed, unbonded post-tensioned, precast, seismic analysis, lateral loading. • INTRODUCTION: In multi-story buildings, shear walls are more effective in resisting lateral loads. Shear walls consisting of steel and reinforced concrete are kept at key locations of multi-story buildings that are constructed with consideration for wind and seismic pressure. Significant research was conducted on several shear wall-related topics, including shear walls can be used in the construction of any kind of tall building that is susceptible to lateral forces like earthquakes and wind. Shear walls can be used to retrofit existing constructions as well as to resist lateral loads. Researchers' cyclic stress experiments reveal that internal shear walls are more effective than external shear walls . If shear walls are sufficiently strong, they will transmit these horizontal forces to the component below them in the load path. These additional elements in the load path could be additional floors, slabs, foundation walls, or shear walls. Shear walls also offer lateral stiffness to avoid excessive lateral movement of the roof or floor above. Shear walls that are sufficiently rigid will stop floor and roof framing members from slipping from their supports. Additionally, sufficiently rigid structures typically sustain less non-structural damage. The overall stiffness is greater than the sum of the individual stiffness when two or more shear walls are joined by a system of beams or slabs. Fig 1. Shear wall interaction Openings typically appear in vertical rows along the height of the wall, and connecting beams hold the cross-sections of the walls together. Coupled shear walls are the name given to such shear walls . The load-deformation behaviour of prestressed