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School buildings have suffered disproportionate damage during past and recent earthquakes. For example, during the 2008 Sichuan earthquake, many school buildings collapsed, resulting in loss of life. School buildings in many other parts of the world are also susceptible to this type of widespread damage because of inadequate design, detailing, or poor construction quality. The purpose of this paper is to show how these fatal flaws can be mitigated prior to future catastrophe by using good engineering practice to retrofit vulnerable schools.

Conventional and innovative, cost‐effective, and reliable tools are available to prevent damage to schools. It is often necessary to examine a group of buildings or all structures in a locality and develop a comprehensive risk management plan for the vulnerable buildings. As an example, a comprehensive evaluation and retrofit project, under the auspices of the World Bank, is currently under way in Istanbul, Turkey, to address vulnerable school and hospital buildings as discussed in the paper. As part of this effort in Turkey, a guideline that relies on state‐of‐the‐art evaluation and retrofit methods has been developed to assist the local engineers.

Implementation of the program based on the uniform standards developed in the retrofit guidelines, has significantly reduced the seismic risk to schools in Istanbul.

The proposed evaluation and implementation technique can be utilized by governments worldwide to prevent further damage to key infrastructure and save millions of lives.

Innovative retrofits can be used to provide enhanced performance and provide seismic resiliency for cluster of school buildings.

Groundwater levels (GWL) are rising in many cities in the world. The purpose of this study is to present the multi‐faceted approach adopted for examining the impact of a 3 m rise in GWL on the durability, stability and strength of the structural components of a building complex with 40,000 m² basement. It also reports on the retrofit measures adopted to remedy the situation.

The overall stability of the building complex was examined for the revised loading conditions as well as the need to strengthen the structurally deficient components to satisfy owner's requirement of a dry and operational basement without the dewatering operation. Structural conditions of the basement walls and a slab of the building complex were assessed based on code guidelines, visual observations, site investigations, analytical finite element model (FEM) studies and sound engineering judgement.

About 25 percent of the existing basement slab was found to be structrally deficient to resist the applied hydrostatic load. A number of articulation and construction details were also found to be inadequate. Various options for retrofit for the deficient structural components and articulation details were examined and design details were presented for a cost‐effective solution.

The presented methodology is general and can be adopted for similar situations. However, the presented solutions and conclusions are specific to the problem presented herein and modifications will be required for adoption to other situations.

Practising engineers are made aware of the problem of rising GWL for underground structures. Practical information is presented for practising engineers to solve the problem of water leakage in a large basement.

This paper presents an integrated approach for addressing the structural implications of rising groundwater level in an operational basement of a large building complex.

The purpose of this paper is to show the importance of a total understanding of the manufacture, before approaching any structural intervention.

The adopted methodology consists of a non‐invasive kind of structural retrofit, in accordance with the history of the manufacture and, at the same time, giving effective respect to seismic solicitations.

The results are very important for demonstration purposes, and they may be taken as examples in many similar problems.

The limitation of this research principally consists in the old datation of the study case, because it could be approached more easily with the help of modern concepts.

Many applications can be carried out from the study case: first, the respectful approach to the cultural heritage, in the sense of knowledge and understanding of the “art rule” belonging to the ancient constructors.

The paper has implications for the safety and conservation of historical heritage.

The originality consists in showing the almost unknown work of a master: he reasoned anticipating the technological progress.

As the widely held perception is that retrofitting is a complicated process and is expensive, the purpose of this paper is to analyze cost effectiveness of retrofitting existing buildings in order to make them safer against earthquake and also to add child friendly features. This case study focuses on the simple method of retrofitting on rectangular single storey existing school buildings. The school buildings are of different types, based on material, shape and size, number of storeys and their vulnerability to earthquake is different case by case. The paper also outlines the process of vulnerability assessment and approach to retrofitting.

The paper is based on the data collected from a case study carried out in Aceh (Indonesia) as a part of an assessment of vulnerability of newly constructed school facilities and retrofitting them in order to increase their seismic performance.

One of the key findings of this study is that retrofitting can be achieved through the use of simple methods, tools and equipment and local human resource. This approach not only reduced the vulnerability of school children to earthquake disaster but also contributed to disseminate the message of culture of safety among the neighboring communities. Another major finding is that cost of retrofitting is less compared to the cost of demolition and rebuilding. The retrofitting option further saves the cost as it is time saving and the downtime is less. The retrofitting process and onsite training can also be an effective medium for dissemination of best construction practices in the community. The process also helps the local people to understand the context of risk and raise awareness on disaster risk reduction.

The findings of this paper are not limited to vulnerability assessment and retrofitting of school building in Aceh. They can be replicated in other parts of Indonesia and countries having similar type of buildings.

The findings of this paper will be useful for decision makers to replicate similar processes in other types of schools in other areas. The findings will also be useful advocate disaster safer and child friendly schools.

The paper is unique in its findings that retrofitting of school buildings does not only make the schools safer and reduces the risk to children but is also cost effective compared to new construction.

The purpose of this paper is to offer an assessment of seismic structural vulnerability of a sample of public schools using Lang survey questionnaire. The structural integrity of public schools in Lebanon is a source of deep concern due to their outdated design and deteriorated status, their apparent lack of compliance with seismic design regulations, the unknown status of their safety and stability, their substandard maintenance and their low construction quality. These schools have not undergone any strengthening improvements to enhance their load-carrying capacity or their resistance to earthquake activity.

This paper is based on survey questionnaire illustrating the seismic risk exposure of public schools in Lebanon. It offers an assessment of seismic structural vulnerability of a sample of public schools using Lang survey questionnaire. It stresses the needs of retrofitting of public school buildings to enhance their functional capacities against future destructive earthquakes.

The findings of the survey emphasize the seismic structural vulnerability of the majority of public schools in Lebanon and call for deeper assessment and investigation that involve government officials for strengthening and retrofitting of public school buildings as part of holistic disaster risk-reduction strategy to prevent the induced serious risk to children in the event of a devastating earthquake.

This article should alert school administrators, public leaders and government officials regarding the seismic threats and their subsequent effects on the structural safety of public school buildings in Lebanon. The assessment of seismic structural vulnerability has rarely been performed or even discussed in the Lebanese-related literature.

The purpose of this paper is to illustrate the potential for green roof retrofit to commercial buildings in a city centre to property managers and other property professionals.

This paper addresses the research question: what is the potential of existing buildings in the CBD to accommodate a retrofitted green roof? Furthermore, it questions how many buildings are suitable for green roofs? The researchers compile a unique building database incorporating information about 536 commercial buidings and evaluate the potential suitability of each building to undergo a green roof retrofit. Assisted by other commercially available databases and software, the researchers are able to assess each roof based on criteria derived from an extensive literature review.

A relatively small proportion of roofs are found to be suitable, partly a result of local climate conditions and rainfall patterns, and the physical property stock. On a purely physical assessment, only a very small proportion of CBD stock is found to be suited. These buildings are most likely to be in low secondary locations, ungraded or B grade buildings, privately owned, concrete framed and not overshadowed by adjoining properties.

Property managers and other property professionals can now determine the potential of their portfolio stock for green roof retrofit based on the review of building attributes required for success adaptation in this paper. It possible that greater potential for green roof retrofit exists in the suburbs or regional towns where lower rise buildings may reduce the amount of overshadowing found in city centres. Follow‐up research could focus on a comparison of regional and suburban developments.

This is the first study of its kind and has assessed such a large number of buildings for their suitability for green roof retrofit; the findings provide a reliable guide for policymakers regarding the potential number of city centre buildings which would be possible to retrofit. Such findings should influence policymaking and incentives to target effective sustainability policies with regards to existing buildings.

This paper first aims to estimate the economic loss due to an earthquake, such as building‐related losses, the damage of debris generation and fire, and the social impact. Then, it seeks to evaluate the feasibility of retrofit to prevent buildings from seismic structural damages.

The HAZUS software is used for the seismic loss estimation using default demographic data, which were obtained from San Francisco Assessor record. The HAZUS estimates the damage using the earthquake of 6.7 magnitude. Based on the HAZUS report incorporated with probabilistic scenarios of earthquakes, Federal Emergency Management Agency (FEMA) guidelines are used to calculate the cost of structural rehabilitation in San Francisco.

It is recommended that either Options 1 and 3 or Options 2 and 3 provided by FEMA 156 and 157 respectively should be used to calculate the cost of seismic rehabilitation of a structure. The results provide estimated costs of retrofit plans for different types of existing buildings.

The implementation of quantitative and computer methods in the field of natural hazard management is demonstrated. The outcome provides economic guidelines for assessment and prevention (or reduction) of possible seismic loss and building damage.

The study may be a useful reference for retrofit plans for homeowners and business management. The cost estimation also can help government establish or revise some policies properly to provide homeowners with economic incentives (e.g. tax reduction, low interest loan) in retrofitting their homes.

This paper aims to address a critical aspect of post‐event recovery, namely the rebuilding of the housing stock following a devastating natural disaster. Using hurricanes as an example, challenges and opportunities are systematically discussed in hopes of sparking some further discussion and new economic models (including incentive‐based) that can help move communities toward greater resiliency and sustainability.

As a viewpoint paper, this paper relies on the author's experience in post‐hurricane damage investigation, structural retrofit, and design to minimize loss.

In evaluating how best to rebuild following a natural disaster, there are clear opportunities (and needs) in the areas of structural damage/loss mitigation, codes and standards, building material and system selection, and risk communication. Specific suggestions are made in each of these areas and the importance of risk‐based decision is stressed in each area.

This paper contributes to the ongoing and informed discussions on resiliency, sustainable design, and disaster‐resistant communities.

Building elements that are damaged by fire are often strengthened by fiber wrapping techniques. Self-compacting concrete (SCC) is an advanced building material that is widely used in construction due to its ability to flow and pass through congested reinforcement and fill the required areas easily without compaction. The aim of the research work is to examine the flexural behavior of SCC subjected to elevated temperature. This research work examines the effect of natural air cooling (AC) and water cooling (WC) on flexural behavior of M20, M30, M40 and M50 grade fire-affected retro-fitted SCC. The results of the investigation will enable the designers to choose the appropriate repair technique for improving the service life of structures.

In this study, an attempt has been made to evaluate the flexural behavior of fire exposed reinforced SCC beams retrofitted with laminates of carbon fiber reinforced polymer (CFRP), basalt fiber reinforced polymer (BFRP) and glass fiber reinforced polymer (GFRP). Beam specimens were cast with M20, M30, M40 and M50 grades of SCC and heated to 925ºC using an electrical furnace for 60 min duration following ISO 834 standard fire curve. The heated SCC beams were cooled by either natural air or water spraying.

The reduction in the ultimate load carrying capacity of heated beams was about 42% and 55% for M50 grade specimens that were cooled by air and water, respectively, in comparison with the reference specimens. The increase in the ultimate load was 54%, 38% and 27% for the specimens retrofitted with CFRP, BFRP and GFRP, respectively, compared with the fire-affected specimens cooled by natural air. Water-cooled specimens had shown higher level of damage than the air-cooled specimens. The specimens wrapped with carbon fiber could able to improve the flexural strength than basalt and glass fiber wrapping.

SCC, being a high performance concrete, is essential to evaluate the performance under fire conditions. This research work provides the flexural behavior and physical characteristics of SCC subjected to elevated temperature as per ISO rate of heating. In addition attempt has been made to enhance the flexural strength of fire-exposed SCC with wrapping using different fibers. The experimental data will enable the engineers to choose the appropriate material for retrofitting.

The purpose of this article is to assist facilities asset managers who are dealing with regulatory environments pertaining to earthquakes and buildings. These professionals can learn a great deal from the successes and short-comings of a case study programme from the Auckland Council Property Department (ACPD), which manages the public facilities portfolio for the largest local administrative region in New Zealand in both population and landmass.

ACPD has initiated its response to New Zealand’s earthquake mitigation mandates by identifying buildings most at risk to an earthquake in its large and varied portfolio through the use of a rapid building evaluation programme strategically targeted to vulnerable building types with consequential attributes, including service type, number of occupants, floor area and geographic location.

ACPD was able to rapidly cull down its portfolio of approximately 3,500 buildings to just over 100 “high-exposure” buildings in urgent need of evaluation, set priorities for future evaluations, estimate needed operational and capital expenditures for long-term planning and provide useful information to more general facilities management decision-making processes.

A number of major cities around the world in areas of high seismicity have enacted ordinances mandating seismic retrofitting. However, much of the existing guiding literature regarding earthquake-related portfolio evaluations and costs pertains to specific scenarios involving real or hypothetical earthquakes. This case study, in contrast, details the approach taken by a public portfolio owner responding to legal mandates and attempting to quantify and reduce its life-safety risk exposure across a large portfolio as efficiently as possible using readily available information, a rapid building evaluation programme and best-practice predictive models for consulting and construction work.