The need for structural rehabilitation or retrofitting of buildings is motivated by the following. Adding beams between the main girders of the existing reinforced concrete deck to. Random thoughts on concrete repair specifications ills and treatment prescriptions r. Proceedings of the 4th international conference on concrete repair, rehabilitation and. The united states experiences a variety of natural disasters throughout the year. Rehabilitation, retrofitting, sustainable development, polymers. The manual intends to achieve the minimum acceptable. Proceedings of the 3rd international conference on concrete repair, rehabilitationandretrofitting iccrrr, capetown,southafrica,september 35,2012 concreterepair,rehabilitation andretrofittingiii editors markg. Prestandard and commentary for seismic rehabilitation of buildings, federal emergency management agency, washington d. Vibration based approach for structural health in retrofitting or rehabilitation of construction buildings. Pdf guidelines for building energy efficiency retrofitting. This manual is to support the partially households that needs repair and seismic retrofitting of partially damaged houses under reconstruction programme. The iterative search is performed on the initial state to. It aims to strengthen a structure to satisfy the requirements of the current codes for seismic design.
Rehabilitation and retrofitting of structures book is also useful to most of the students who are preparing for competitive exams. The focus of this manual is on retrofitting buildings that are subject to flooding. The result of that humongous effort is the soontobe released asce 41. What is the difference between rehabilitation, repair. This conference is a collaborative venture by researchers from the south african research programme in concrete materials based at the universities of. Retrofitting of different types of reinforced concrete beams. Earthquakes earthquakes do not kill but it is the buildings which kill nearly 5,00,000 earthquakes occur every year about 1,00,000 are felt minor earthquakes occur nearly constantly around the world in places like california and alaska in the u. This textbook is mainly useful for civil engineering department students. Evaluation of building retrofitting alternatives from sustainability.
Guidelines for building energy efficiency retrofitting. Horizontal forces of earthquakes cause damage to historic structures. Assessment and rehabilitation of steel railway bridges using fibrereinforced polymer. Part i what are the primary differences between mitigation and preparedness. Pdf a large number of reinforced concrete rc structures are. We follow the ascesei standard 4106, which is a valuable software tool for structural engineers to improve the seismic performance of existing buildings and offer some unique advantages to their clientele. In 1981, sugano2 published research on the seismic retrofit of buildings in japan, based on rehabilitation procedures followed after 1968 in tokachioki. Retrofitting will involve relatively less resources, either human resources or natural resources. Case studies of rehabilitation, repair, retrofitting, and. Seismic evaluation and retrofit of existing buildings.
Rehabilitation and retrofitting of structures book free. Evaluation of building retrofitting alternatives from sustainability perspective. Repair and rehabilitation of structures retrofitting of. Here we are providing rehabilitation and retrofitting of structures book free download. Reference rehabilitation and retrofitting of structures rrs notes pdf rrs pdf notes rrs pdf rrs notes. The effect of site of rehabilitation care outcomes for a more broad range of conditions has also been studied. The cost of retrofitting various infrastructures is estimated in the lakhs of. Seismic retrofitting techniques for concrete structures. Rehabilitation and retrofitting of structures book free download here we are providing rehabilitation and retrofitting of structures book free download. Inspection, evaluation, rehabilitation, maintenance and. Concrete repair, rehabilitation and retrofitting iv. Retrofitting can improve a machine or systems overall. Pdf retrofitting and rehabilitation of fire damaged concrete.
Strengthening and retrofitting of existing structures anibal costa. Nondestructive evaluation of concrete structures by bungey 4. It addresses in detail specific techniques for the strengthening of traditional constructions, reinforced concrete buildings, bridges and their foundations. If this cause is properly identified, satisfactory repairs can be done for the improvement of strength and durability, thus extending the life of the structure, is not difficult to achieve. Chapter 2 homeowners guide to retrofitting 7 introduction to retrofitting figure 23 now the house in the background is protected from flooding, unlike the flooded house in the foreground. Finally, selection criteria for retrofitting technique are briefly discussed. This has been brought in details in the paper along with case studies, where the author of the paper was directly involved in planning and execution of the jobs. Retrofitting is an important process used for valves and actuators to ensure optimal operation of an industrial plant.
Renovation, rehabilitation and restoration of office buildings. Retrofitting a historic structure in salt lake city to improve its ability to withstand seismic events can be carried out while minimizing negative impacts upon historic features and building materials. As bridges grow older, there rehabilitation and retrofitting becomes increasingly important. Rehabilitation and retrofitting of structures notes rrs pdf. It is preferable when the retrofitted building has historical values. Pdf this study aims at presenting a methodology for the taking decision about the retrofit or the.
The repairs are performed on damaged buildings to restore the strength after disaster 2. Retrofitting will not significantly change the building configuration and shape. In addition, adaptive reuse, which can occur in any of the rs, is the conversion of a building from its original function to a new use. Maintenance is the act of keeping something in good condition by checking or repairing it regularly. How the choice of the repair andor strengthening method depends on the structural behaviour objectives. Repair, rehabilitation and retrofitting of building. However, at the 1year followup, the patients in managed care were found to be 2. The following discussion presents the commonly accepted definitions of these terms. Repair and rehabilitation structural rehabilitation of. It is mainly useful for students who are studying engineering and diploma courses. The retrofitting work consisted of the demolition of the existing structural. Retrofitting work an overview sciencedirect topics.
Concrete repair, rehabilitation and retrofitting iii. Rehabilitation and retrofitting of structures notes rrs. Pdf choice between retrofitting and reconstruction of buildings. This chapter presents the factors that influence retrofitting decisions and the intimate role they play in. Masonry is widely used type of construction in the world. The new combined standard has eliminated any inconsistencies that previously existed between the two. Repair is the process of restoring something that is damaged or deteriorated. The chapter provides two generic retrofitting matrices that were designed to help the designer narrow the range of floodproofing options. The success of repair activity depends on the identification of the root cause of the deterioration of the concrete structures. This chapter gives a basic overview of the different flood retrofit options. Retrofitting reduces the vulnerability of damage of an existing structure during a future earthquake.
Rehabilitation and retrofitting of structures important questions. Strengthening of reinforced concrete beam utilizing frp has been applied to tackle problems related to the civil infrastructure. The purpose of this paper is to present the process of rehabilitation, retrofitting characteristics and technical aspects of the major intervention methods. Retrofitting of different types of reinforced concrete. It can arise also from calculations or by comparisons with similar build. Rcj with different amounts of reinforcing steel, cfrp, and bonded steel plates are used for retrofitting various types of reinforced concrete beams after they have been exposed to different levels of elevated temperatures. There are various studies which demonstrate the effectiveness of different strength techniques using frp and considerably increase both strength and stiffness. Rehabilitation and retrofitting of structures important. But, the expertise needed is not available in the basic level.
Once the decision is made, seismic retrofitting can be performed through several methods with various objectives such as increasing the load, deformation. Sta4cadanalysis and design manual of multistory rc structures. Repair and strengthening of reinforced concrete structures. Accordingly, the various conditionsshould be considered and the ideal retrofitting method selected from the various retrofitting methods listed by retrofitting objective in 1 6 above. To restore the reinforced beam capacity, different types of retrofitting techniques are used. Maintenance and repair strategies v ii s em este r ci v il p ag e 1 part a 1. Seismic retrofitting is a suitable technology for protection of a variety of structures. After briefly introducing how seismic action is described for design purposes, methods for assessing the seismic vulnerability of existing buildings are presented. During startup and shutdown, the temperature difference between the upper. Earthquakes earthquakes do not kill but it is the buildings which kill nearly 5,00,000 earthquakes occur every year about 1,00,000 are felt minor earthquakes occur nearly constantly around the world in places like california and alaska. Flexural retrofitting of rc buildings using gfrpcfrp a. Differences between mitigation and preparedness free. In the research reported in this paper, the feasibility of using glass fiber composite laminates gfcl locally available in the egyptian market in retrofitting flexural reinforced concrete elements is studied.
It is the act of restoring something to its original state. Case studies of rehabilitation, repair, retrofitting, and strengthening of structures this document provides case studies of structural rehabilitation, repair, retrofitting, strengthening, and upgrading of structures, which might be encompassed in short by the convenient umbrella terms conservation upgrading of existing structures. Conclusion seismic retrofitting techniques for concrete structures. Strengthening and retrofitting of existing structures. Introduction to retrofitting retrofitting is any change made to an existing structure to reduce or eliminate the possibility of damage to that structure from flooding, erosion, high winds, earthquakes, or other hazards. Differences between mitigation and preparedness free essays. The seismic retrofitting of reinforced concrete buildings not designed to withstand seismic action is considered. One example is retrofitting a 3way valve into a 2way valve, which results in closing one of the three openings to continue using the valve for certain industrial systems. To bring back the position of the structure to its previous condition so it gives. This book presents the fundamentals of strengthening and retrofitting approaches. Decision process and optimization rules for seismic retrofit programs.
This book presents the fundamentals of strengthening and retrofitting approaches, solutions and technologies for existing structures. A large stock of existing structures and infrastructure are deteriorated with use and time and might have passed their design life and require retrofitting and rehabilitation. Retrofitting of structures like building, which includes rehabilitation, maintenance and strengthening of the structure, is not only a need in construction and management in urban areas, but also a problem which arises to structural engineers in property management disciplines. Comparison of compressive strength of concrete calculated by destructive and nondestructive. At the outset of the project, the homeowners were concerned about how the house would look after it was elevated. Alexander departmentofcivilengineering, universityofcapetown, southafrica hansdieterbeushausen. The repair and retrofitting strategies set forth in this manual are applicable only for the residential houses that falls in repair and retrofitting categories after gorkha earthquake 2015 under the gon housing reconstruction programme. How the choice of the repair and or strengthening method depends on the structural behaviour objectives.
Repairs, rehabilitation and retrofitting of structures prepared by. Concrete repair, rehabilitation and retrofitting iv proceedings of. Retrofitting and rehabilitation linkedin slideshare. The chapter6, which is on repair, rehabilitation and retrofitting methods gives guidelines for selection of method from various repair options available to suit the performance requirement of repair system. The fourth international conference on concrete repair, rehabilitation and retrofitting iccrrr 2015 was held 57 october 2015 in leipzig, germany. The methods available for repair, rehabilitation and retrofitting are many. The real momentcurvature or momentrotation curve of a rc member in which the tension steel yields, can be idealised to a simplified bilinear curve, as shown in fig. Seismic rehabilitation has been working to combine asce 3103 into asce 4106 while also updating both standards. May 07, 2017 download version download 1569 file size 1.
Theerkadarshini asst professor,dept of civil,panimalar engineering college,india abstract. Reports after reports have documented the fragility state of many buildings and called for the urgent attention because of their critical disrepair state due to aging and degradation. Based on the decided rehabilitation strategy, gfrp and cfrp retrofitting could increase the lateral resistance of the structure about 43% and 80%, respectively. Moreover, it was found that retrofitting configuration could affect the seismic response of the structures substantially. Courtesy of utah division of state history, office of historic. In practice, however, they are too often used imprecisely. Deflection, cracking, chemical disruption, weathering corrosion, wear, fire, leakage and marine exposure. The repair services includes reconstruction of nonstructural walls, chimneys, boundary walls etc. The resolution of the problem uses the comparison between the cost of retrofit divided by twentyfive. Concrete repair, rehabilitation and retrofitting repair methods, materials and techniques. Nondestructive evaluation of concrete structures by.
The repair services includes reconstruction of nonstructural walls, chimneys, boundary walls etc checking ans repairing electrical connecti. Pdf concrete structures protection, repair and rehabilitation. Retrofitting is the seismic strengthening carried out to upgrade the seismic resistance of a damaged building. Unit v repair, rehabilitation and retrofitting of structures 9 repairs to overcome low member strength. Retrofitting the building will produce less debris than reconstructing the building. To bring back the position of the structure to its previous condition so it gives performance same as previously. Retrofitting, strengthening and repair have been selected as the most important. Retrofitting and rehabilitation of existing structures o2i. It has matured in the recent years to a highly reliable technology. Deterioration of concrete, corrosion of steel, heavier life load, increase traffic density, poor resistance of fatigue, wind and seismic load, damage due to fire and collision, and normal wear due to aging or some of the reason for rehabilitating or retrofitting of a bridge. This has to be done to save the lives and the economy. Outsourcing retrofitting and rehabilitation of existing structures can present numerous benefits. For example, seismic retrofitting is generally used for column members and is performed in most cases to.