Estimating the Soil Moisture Index using Normalized Difference Vegetation Index (NDVI) And Land Surface Temperature (LST) for Bidar and Kalaburagi District, Karnataka
Roughness Evaluation of Flexible Pavements Using Merlin and Total Station Equipment
Site Suitability Analysis for Solid Waste Dumping in Ranchi City, Jharkhand Using Remote Sensing and GIS Techniques
Unsaturated Seepage Modeling of Lined Canal Using SEEP/W
Strengthening and Rehabilitation of RC Beams with Openings Using CFRP
A Seasonal Autoregressive Model Of Vancouver Bicycle Traffic Using Weather Variables
Prediction of Compressive Strength of Concrete by Data-Driven Models
Predicting the 28 Days Compressive Strength of Concrete Using Artificial Neural Network
Measuring Compressive Strength of Puzzolan Concrete by Ultrasonic Pulse Velocity Method
Design and Analysis of Roller Compacted Concrete Pavements for Low Volume Roads in India
Culverts are vital components of earth embankments, allowing watercourses like streams and nallas to flow without disrupting the natural water movement. They play a key role in managing floodwaters on either side of the embankment, helping to reduce water levels and mitigate flood risks. Culverts are available in various shapes, including arch, slab, and box configurations, and can be constructed from materials such as masonry or reinforced concrete. Embedded within earth embankments, culverts are subjected to traffic loads similar to those on the road and must be designed to accommodate these loads. This paper focuses on the structural design and parametric analysis of RCC box culverts, with and without cushion, using STAAD-Pro. Design parameters, including size, invert level, and layout, are determined based on hydraulic requirements and site-specific conditions, with the cushion varying according to the road profile at the culvert location. The study examines various load cases, such as empty box, full box, and surcharge loads, and considers factors like effective width, load dispersion through fill, impact factor, and earth pressure coefficient, in accordance with IRC codes. It offers a comprehensive discussion on code provisions, design considerations, and justifications for the structural design of RCC box culverts, ensuring they can withstand maximum bending moments and shear forces.
This paper presents a comprehensive analysis of a two-span post-tensioned prestressed concrete cellular box girder bridge deck, focusing on the effects of dead load, moving load, and prestressing across various span lengths (30m, 40m, 50m, 60m, and 70m) and different span-to-depth (L/D) ratios of 23, 24, 25, 26, and 27. The study follows the limit state method as per IRC 112-2011 guidelines. Key parameters analysed include bending moments, shear forces, and top fibre stresses. The research aims to identify the optimal L/D ratio that balances structural efficiency and material usage. The results indicate that an L/D ratio of 25 provides the most balanced design, achieving the best combination of structural performance, material efficiency, and economic viability. This ratio minimizes material usage while maintaining adequate structural integrity and avoiding excessive prestressing forces. The paper also includes a detailed comparison of manual versus software-based calculations for bending moments, shear forces, and deflections. The findings show that while software calculations tend to predict lower deflections and higher shear forces for both shorter and longer spans, the manual calculations align closely with the software results for intermediate spans. The top fibre stress analysis further confirms that all designs remain within permissible limits, ensuring safety and compliance with relevant standards. Overall, the study reinforces the suitability of the L/D ratio of 25 as the optimal choice for designing two-span prestressed concrete box girder bridge decks, offering a robust framework for future design considerations.
Most of the construction projects in Telangana are exposed to time and cost overruns. This phenomenon may affect the progress of the construction industry in Telangana, as well as cause many organizations of construction to be destroyed. This study focuses on the identification and evaluation of factors affecting the time and cost overruns, in the Telangana construction projects. i.e., in the Construction of Irrigation Projects. To achieve the said objectives of the study, first questionnaire surveys were conducted and later factor analysis of time and cost overruns were carried out. About ten Projects were visited, and data collected within a span of twenty-two months. The time and cost overruns factors in Construction of Irrigation Projects in Telangana works are divided into four major categories viz., manpower related, machinery related, equipment related and financial related. These factors were analyzed using Statistical Package for Social Sciences (SPSS) software to carry out Factor Analysis. Factor analysis is a statistical technique used to reduce a large number of variables into a smaller set of factors. These factors are underlying constructs or latent variables that explain the correlations among the observed variables. Factor Analysis delivered by two different approaches, Exploratory Factor Analysis (EFA) Data-driven, explores underlying structure, with no prior hypotheses, and Confirmatory Factor Analysis (CFA) Theory-driven, tests a pre-specified model, requires prior knowledge. EFA and CFA are complementary techniques used to understand the underlying structure of a set of variables. CFA can refine the factor structure suggested by EFA. The combined results can lead to the development of reliable and valid measurement scales.
