Experimental Study of Shear Failure of Damaged RC Beam Strengthened with GFRP
Antecedents of Variations in Construction Contracts - A Statistical Correlational Study
Dynamic Response of Footbridge Decks
Urban Green Spaces and their Role in Enhancing Quality of Life
Parametric Study on Structural Behaviour of RCC Box Culvert
Study on Strength Properties of Lightweight Expanded Clay Aggregate Concrete
A Step By Step Illustrative Procedure to Perform Isogeometric Analysis and Find the Nodal Displacements for a Two Dimensional Plate Structure
Lateral - Torsional Buckling of Various Steel Trusses
Comparative Study on Methodology of Neo-Deterministic Seismic Hazard Analysis Over DSHA and PSHA
A Step by Step Procedure to Perform Isogeometric Analysis of Beam and Bar Problems in Civil Engineering Including Sizing Optimisation of a Beam
Investigation on the Properties of Non Conventional Bricks
Analysis on Strength and Fly Ash Effect of Roller Compacted Concrete Pavement using M-Sand
Investigation on Pozzolanic Effect of Mineral Admixtures in Roller Compacted Concrete Pavement
Effect of Symmetrical Floor Plan Shapes with Re-Entrant Corners on Seismic Behavior of RC Buildings
Effect of Relative Stiffness of Beam and Column on the Shear Lag Phenomenon in Tubular Buildings
This study investigates the shear failure characteristics of reinforced concrete (RC) beams retrofitted with Glass Fiber Reinforced Polymer (GFRP) sheets. Fifteen RC beams were initially tested for shear capacity and then retrofitted using various GFRP wrapping techniques, including full wrapping, U-shaped wrapping, side wrapping, vertical alignment, and 45-degree inclined wrapping. The results revealed significant enhancements in shear capacity, with vertical alignment wrapping showing the highest increase. The study concludes that GFRP wrapping is an effective and economical method for retrofitting shear-deficient RC beams, contributing to improved structural safety.
Modifications to the design, quality, quantity of work, and standard of materials or goods to be utilized and the removal of any materials not in compliance with the contract from the site, are all considered variations in construction. The building industry is facing a significant problem with variation orders. This led to delays, cost overruns, and occasional disputes between the parties over contracts. This paper sought to determine the underlying reasons for variation, the implications of variations on Indian projects, and strategies for lessening the impact of variation orders. The study's methodology included a review of the literature, the collection of primary data, interviews, and closed-ended questionnaires. To determine whether there was a significant difference in the means of the professional groups, the analysis of variance test is employed. The collected data is reliable, the Cronbach alpha is greater than 0.70, and also the Pearson correlation coefficient is lying between -1 and 1. From this study, it is concluded that the correlation may or may not exist among the antecedents of variations, and their correlation may appear in any direction, and it is also in line with standard theory of statistics.
In the modern era, the demand for lightweight footbridges has grown significantly. However, this trend introduces new challenges related to the dynamic behaviour of such structures, especially under pedestrian-induced loading. This paper investigates the dynamic response of footbridge decks, focusing on the effects of vibration, pedestrian loading, and design considerations. Through a detailed analysis of a simply supported footbridge, we evaluate natural frequencies, critical ranges, and acceleration responses under varying pedestrian densities. The results emphasize the need for careful consideration of dynamic effects in the design phase to ensure pedestrian comfort and structural safety.
Urban green spaces, encompassing parks, gardens, and natural landscapes, play a vital role in improving the quality of life for city residents. These areas provide environmental benefits such as enhanced air quality, regulation of temperatures, and conservation of biodiversity, fostering a healthier urban environment. Additionally, green spaces offer opportunities for recreation and places for social interaction, which strengthen community unity and individual wellbeing. This study examines literature and case studies to identify factors that influence the efficacy of urban green spaces, stressing the importance of fair and comprehensive access. It also underscores the significance of integrating green spaces into urban planning to develop sustainable, livable cities. By advocating for increased investment in green infrastructure, this paper seeks to educate policymakers, urban planners, and community stakeholders about the critical role of urban green spaces in improving quality of life.
Culverts are essential under earth embankments to allow watercourses, such as streams and nallas, to pass through without obstructing the natural flow. They help manage floodwaters on both sides of the embankment, reducing water levels and mitigating flood risks. Culverts come in various shapes, including arch, slab, and box configurations, and can be constructed from materials such as masonry or reinforced concrete. Culverts, embedded within earth embankments, 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, both with and without cushion. Design parameters such as size, invert level, and layout are determined based on hydraulic considerations and site conditions, with the cushion depending on the road profile at the culvert location. The study examines various load cases (e.g., empty box, full box, surcharge loads) and factors such as effective width, braking force, load dispersion through fill, impact factor, and earth pressure coefficient as per IRC codes. It provides 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.
