Department of Civil Engineering

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Author: search.filters.author.Jha, Shibani KhanraSubject: search.filters.subject.Civil engineering

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    Floating solar photovoltaic (FSPV) installations at varying heights: evaporation reduction estimation for major dams of the tropical region of Uttar Pradesh, India
    (IOP, 2025) Singh, Ajit Pratap; Jha, Shibani Khanra; Mittal, Ravi Kant
    Any tropical region is well known for its high levels of sunshine and is suitable for PV installations with the associated disadvantage of high evaporation rates. FSPV is an alternate approach for solar PV installations in such regions to harness maximum solar energy with the additional advantage of reducing evaporation from water bodies. The study on estimating the reduction in evaporation due to FSPV installations and associated panel height above the water surface is limited. This study aims to quantify the reduction in evaporation resulting from the deployment of floating solar photovoltaic (FSPV) systems above water surfaces. It also determines the panel height above water bodies to maximize evaporation reduction. These findings are then extended to evaluate the impact of FSPV installations on reducing evaporation over the major dams in the tropical region of Uttar Pradesh, India. The experimental results highlighted that the maximum evaporation reduction occurred from the water surface covered with a panel at a height of 300 mm above the water with an evaporation reduction of 23.44 %. The extrapolation of the study for 28 major dams of Uttar Pradesh, reveals an annual water saving of 92.56 million cubic meters (MCM) with FSPV coverage of 25%. Based on estimations, a 1 MWp FSPV installation considerable amount of water annually can fetch water for 67 individuals in a tropical region, assuming 100 lpcd. These research outcomes would provide valuable insights into FSPV technology and its potential to mitigate water evaporation, with implications for regional and national water and energy resource management policies.
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    Perspective and strategies on newage education and creative learning
    (Springer, 2024) Jha, Shibani Khanra; Bhattacharyya, Tamali
    This book presents the proceedings of the International Conference on Best Innovative Teaching Strategies (ICOBITS) at BITS Pilani on Feb 9-11, 2023. It brings together global academicians, researchers, and industry experts to delve into innovative teaching-learning practices. Meticulously selected and reviewed by professionals, the proceedings offer cross-cutting perspectives and strategies in education and creative learning. It is organized into four parts and covers Innovative Pedagogical Practices for Technology Enhanced Learning, Technology, Society and Industry in Higher Education, STEM Education and Cultural Studies, Gender Studies and Sustainability in Higher Education. It provides insights into assessment tools for effectively evaluating the efficiency of teaching methods. Part one explores ICT, digital classrooms, metaverse-based teaching, gamification, and AI-ML-based practices. Part two delves into the humanistic approach in technical education, social networking as an educational tool, and outcome-based assessment needs. Part three addresses future educators' requirements through multidisciplinary collaboration in STEM education. Part four discusses gender equity, structured social inclusion and cultural skills in teaching-learning practices. This book is a valuable resource for academicians, researchers, policymakers, administrators, technocrats, and developers actively engaged in education technology across disciplines such as Engineering, Sciences, Management, Humanities, and Social Sciences.
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    Economical design of rectangular footing subjected to uplift due to biaxial moments
    (Springer, 2025-03) Mittal, Ravi Kant; Jha, Shibani Khanra
    The superstructural load of the building is transferred to the ground through footing. The Footings are typically subjected to axial loads and biaxial moments. When moments are large it is uneconomical to design footings for full contact area of footing. Therefore, various codes permit uplifting of foundations. Solutions of footings subjected to biaxial moments during uplift are complex and time-consuming. Also, several algorithms are needed to achieve the desired results. This paper proposes a simplified solution to optimize footings under uplift subjected to biaxial moments. The footing with biaxial moments is categorised into different zones based on the location of neutral axis and position of eccentricity of the load. The approach described in this study utilizes the functions of the Excel solver while adding the necessary constraints to determine the minimal size of the rectangular footing. Further, the maximum pressures for different zones were estimated, and optimisation was carried out with the appropriate constraints for each zone separately. The values obtained by this approach were compared with those in the literature, and percentage decrease in the footing area was observed from 1.1 to 15.7%.