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This paper deals to create awareness amongst the civil engineers, residents and owners of building towards the health examination of existing concrete buildings called as Structural Audit. The need of structural audit is for maintenance and repairs of existing structures whose life has exceeded the age of 30 years to avoid any mishaps and save valuable human life. The concrete is widely used as construction material being inexpensive, easy for construction, applications and because of it high strength-cost ratio. More than ever, the construction industry is concerned with improving the social, economic and environmental parameters of sustainability. In India, from 1980 onwards the infrastructure industry witnessed stepping up of public investment and growth in infrastructure industry which results in construction of new multistory concrete apartments which are now in the age of thirty plus years. There are many buildings during this period and earlier have reduced strength in due course of time because of structural deficiency, material deterioration, unexpected over loadings or physical damage. If, further use of such deteriorated structure is continued it may endanger the lives of occupants and surrounding habitation. There is demand of appropriate actions and measures for all such building structures to improve its performance and restore the desired functions of structures which may leads to increase its functional life. The periodical structural auditing and diagnosis for health of existing buildings is thus utmost important for finding the present serviceability and structural viability of structures. The structural audit must be carried out following auditing norms, methods of non-destructive testing and code provisions. The structural A.B. Mahadik & M.H. Jaiswal 412 auditing will help to implement maintenance and repair work timely which leads to prolonged life of the building and safety of the occupants.
Concepts Books Publication
LIFE CYCLE EVALUATION OF REHABILITATION OF RESIDENTIAL STRUCTURES SUBJECTED TO EARTHQUAKE2016 •
The rehabilitation of any structure is necessary, if the potential strength, as on the date, of the structural element or the global strength, found less than proposed, thereby reducing the factor of safety. The reduction in factor of safety alarms the danger signal during the event of disaster especially like earthquake. The ageing of the admixtures of the building components, environmental effects on the materials, repeated excessive or the change in the stresses reduces the strength. The change of use causing undesired change in nature and or of quantity of loading, change made in seismic zone, by national bodies, are the other factors that contribute in reduction of potential strength of the building. The compliance of potential strength is a cyclic process and in turns the process of rehabilitation. The evaluation of strength, of rehabilitated building, is the process contributed by the materials used, the methodology adapted, the workmanship, and the required rehabilitated strength. In this paper focus, and emphases, placed on explaining efficient, economical, eco-friendly and optimistic use these factors. Devastative earthquake that rock the Gujarat region, selected to collect the information about the current scenario, in respect of above referred factors and the awareness level among the affected citizens. The information collected from technical professionals, the implementers, and the end users, by method of literature reviews and on the expert advice. A case study is conducted; that explains the advantage of retrofitted building in the form of higher safety level for users, and extended longevity of the serviceable life of the building. Further, maintaining lower level of carbon emission, and ratable value for the tax calculation of the building. Key words: - 1) Reduction in strength 2) Eco-friendly 3) Optimum utilization criteria 4) The decision-making process
Abstract: In a framed structure building, frame which is the heart of building. This frame is design by structural engineer taking in to consideration of factors and various codes which necessary. Different techniques used to assess of frames of old structure. Visual inspection non destructive test are used to access frame of structure is made. Keywords: Framed Structure, Load bearing Structure, Structural Audit, NDT Test. Title: Structural Audit Author: B.H Chafekar, O.S Kadam, K.B Kale, S.R Mohite, P.A Shinde, V.P Koyle International Journal Of Civil And Structural Engineering Research (IJCSER) Research Publish Journals
Study has been aimed to establish a structured solution for rehabilitation and retrofitting of fire damaged concrete buildings. This study explains the rehab process of fire damaged concrete buildings in three basic categories; condition evaluation, decision making, rehabilitation & retrofitting. Evaluation method of damaged building has been based upon understanding of material properties at elevated temperatures, condition survey and condition assessment. Condition survey includes visual inspection, hammering and chiselling techniques whereas condition assessment includes both non-destructive and destructive tests that are selected upon the basis of efficiency, economy, and performance. Feasibility study is required to make right decisions for the rehab of fire damaged building. Such a feasibility study should include all important aspects that will have an impact in the future, therefore must be considered in decision making. A new feasibility analysis model is developed as a part of research. It is expected to help decision making process because of its sound conceptual foundation and detailed structure. If feasibility study reveals rehabilitation and retrofitting worthwhile then it can be effectively rehabilitated with the help of right techniques. Rehabilitation of non-structural members/elements and retrofitting of structural elements with the help of soda blasting, patch repair, FRP reinforcing, partial removal and replacement, concrete jacketing, steel jacketing and few other retrofitting techniques has been discussed. Respective pros and cons of these techniques have been covered with special focus on sustainability, economy, efficiency and limitations. These techniques can be used separately or in conjunction with other techniques. As every locks has its own key similarly every case has its unique solution therefore it can’t be said that which technique or set of techniques is universally superior to others. Generally speaking, partial removal and replacement offers more advantages. It seems to have more ticks and less crosses when compared to others
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