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For a state like Uttarakhand, which is located in the seismically active Himalayan region and in the vicinity of plate boundaries, estimation of seismic hazards and the preparation of a zoning map are an urgent necessity. This paper aims to focus on this hazard.

In total, 32 potential seismo‐tectonic source zones were identified in a very wide area in and around the state, on the basis of seismicity and tectonics, and the longer ones were segmented. The maximum magnitude that each seismo‐tectonic source zone can support was then estimated. The seismic hazard due to each seismo‐tectonic source zone was assessed at 180 sites, in terms of peak ground acceleration (PGA).

The maximum PGA at each site varied between 0.06g and 0.50g. The seismic hazard was highest around the main central thrust and the main boundary thrust, and five other thrusts between these two thrusts. This assessment was adapted to make a seismic zoning map of Uttarakhand, with five distinct zones.

If seismo‐tectonic source zones from the contiguous regions of Nepal and Tibet were included as part of this assessment, then a higher hazard would be expected in Uttarakhand.

Threat perceptions of a potential earthquake disaster can be assessed in this zoning map. Disaster mitigation strategies will vary geographically, with priorities defined by the zoning map presented here. The methodology evolved has the potential to be extended to other vulnerable states in the Himalayan arc.

The seismic hazard assessed has been adapted to formulate a seismic zoning map of Uttarakhand.

The purpose of this study is to estimate the cost of seismic resilience of identified vulnerable lifeline public buildings in earthquake-prone Himalayan province of Uttarakhand in India.

Built area of the identified vulnerable lifeline buildings together with prevalent rate of construction has been considered for assessing the cost of seismic resilience while improvised rapid visual screening (RVS) technique, better suited to the built environment in the region, has been used for assessing seismic vulnerability.

Investment of US$250.08m is assessed as being required for ensuring seismic safety of 56.3, 62.1, 52.9, 64.6, 71.9 and 61.7% surveyed buildings, respectively, of fire and emergency services, police, health, education, local administration and other departments that are to become non-functional after an earthquake and result in a major socio-political turmoil. A total amount of US$467.71m is estimated as being required for making all the buildings of these departments seismically resilient.

Actual investment estimates and reconstruction/retrofitting plans have to be prepared after detailed investigations as RVS technique only provides a preliminary estimate and helps in prioritising buildings for detailed investigations.

This study is intended to provide a snapshot of the state of seismic vulnerability together with the financial resources required for corrective measures. This is to help the authorities in planning phased mobilisation of financial and technical resources for making the built environment seismically resilient.

This study is to bring forth awareness on this important issue and consequent public opinion in favour of safety of public facilities to ensure allocation of appropriate financial resources together with changes in techno-legal regime for the cause of earthquake safety. At the same time, this study is to motivate masses to voluntarily assess safety of their neighbourhood and undertake corrective measures.

This study is based on primary data collected by the authors.

Accra, the capital of Ghana is far away from major earthquake zones of the world, but has a history of destructive earthquakes. However, its seismic risk does not attract the requisite attention. The purpose of this paper is to give an overview of Accra's seismic risk, discuss challenges faced and risk‐reduction initiatives, and then to propose specific strategies that are necessary to reduce this risk.

The approach taken is to: give an overview of Accra's profile and seismicity; discuss disaster management structures in place and the challenges faced; discuss seismic risk‐reduction programs; discuss the risk‐reduction strategies of two cities in other developing countries, with the view of identifying specific strategies that would be helpful to Accra; and conclude with specific risk‐reduction action measures that are important for Accra.

A number of specific recommendations to reduce Accra's seismic risk are made at the end of the paper. Among these, the need to set up a national organization with the sole mandate of championing seismic risk reduction is identified as a critical step needed. Without this, and others, the paper contends that Accra would not experience any significant reduction of its seismic risk.

The paper presents a viewpoint of important action steps that need to be taken to reduce Accra's seismic risk. The points raised in the paper are considered as important first steps necessary for any form of sustainable disaster risk reduction. The paper would thus be of interest to any person or organization interested in helping reduce Accra's seismic risk.

This is the first paper to put Accra's seismic risk in a global context, and then propose action steps that are necessary to help reduce this risk.

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.

The purpose of this paper is to attempt to assess the seismic vulnerability of the built environment in the Himalayan township of Mussoorie in the state of Uttarakhand (India), paying specific attention to hospitals. Also an attempt is made to assess the magnitude of minimum economic losses, so as to design and undertake measures for reducing human misery in the event of a major disaster.

Seismic vulnerability of the building stock is evaluated using FEMA technique rapid visual screening and the likely earthquake induced damage is depicted as a function of the damage grades of the European Macroseismic Scale (EMS‐98). In total, 3,344 buildings, including 14 hospitals, are surveyed. In the field the structures are mapped using IKONOS satellite imagery while the collected data are analysed under geographic information system environment.

It was found that 18 percent of surveyed structures fall in high probability of Grade 5 damage and very high probability of Grade 4 damage class. This is estimated to result in economic loss of US$52.47 million. Almost, 80 percent of the hospitals of Mussoorie are thus likely to be non‐functional in the post‐earthquake phase due to varying degrees of structural and non‐structural damage.

The study does not account for the cost of demolition or ground clearance cost for reconstruction, or losses likely to be incurred by public infrastructure. Thus, it is implied that retrofitting and replacement of vulnerable healthcare infrastructure should be facilitated on a priority basis along with development of suitable plans for mitigating losses in an earthquake event.

The study brings forth the importance of corrective actions (retrofitting/replacement) and detailed vulnerability assessment of all lifeline structures on priority basis.

The results are intended to reduce seismic vulnerability and human toll in the event of any earthquake in the area.

The work is based upon the original data generated by the authors through rigorous fieldwork in the area and the results are totally based on these.

Seismic isolation, as an effective risk mitigation strategy of building/bridge structures, is incorporated into AP1000 nuclear power plants (NPPs) to alleviate the seismic damage that may occur to traditional structures of NPPs during their service. This is to promote the passive safety concept in the structural design of AP1000 NPPs against earthquakes.

In conjunction with seismic isolation, tuned-mass-damping (TMD) is integrated into the seismic resistance system of AP1000 NPPs to satisfy the multi-functional purposes. The proposed base-isolation-tuned-mass-damper (BIS-TMD) is studied by comparing the seismic performance of NPPs with four different design configurations (i.e. without BIS, BIS, BIS-TMD and TMD) with the design parameters of the TMD subsystem optimized.

Such a new seismic protection system (BIS-TMD) is proved to be promising because the advantages of BIS and TMD can be fully used. The benefits of the new structure include effective energy dissipation (i.e. wide vibration absorption band and a stable damping effect), which results in the high performance of NPPs subject to earthquakes with various intensity levels and spectra features.

Parametric studies are performed to demonstrate the seismic robustness (e.g. consistent performance against the changing mass of the water in the gravity liquid tank and mechanical properties) which further ensures that seismic safety requirements of NPPs can be satisfied through the use of BIS-TMD.

The purpose of this research is to show significant points which can be used in the architectural design process by investigating the basic principles of earthquake resistant design (ERD) in a deductive format and to contribute to the architectural perception in ERD.

First, the structural irregularity types are examined depending on the rules defined in the Turkish Earthquake Code, 2007 (TEC). Then, architectural design failures related to earthquake resistance of buildings under earthquake loading are visualized and solution suggestions in literature are described in detail by supported drawings.

The problems causing structural irregularities are investigated deeply with given solutions in literature. It is obtained that the significant factors affecting the earthquake performance of structures are: architectural form, structural configuration, slenderness ratio, the location and rate of floor openings, projection rates and symmetry, rigidity and strength differences between floors, short columns, pounding effect. Social implications – The practical design decision rules can contribute to the phenomena of earthquake resistant architectural design and can encourage adoption of these rules in building industry.

This study aims to gain an understanding of the problems in projects in terms of structural irregularities, and then manage to solve the problems using problem‐oriented approaches. The suggested solutions can be adopted and applied to future projects for designing earthquake resistant buildings.

Despite being located in earthquake sensitive region and often experiencing seismic tremors the State of Uttarakhand in the Indian Himalayas exhibits an elaborate tradition of constructing multistoreyed houses. Both the local dialects of the State (Kumaoni and Garhwali) have unique words for identifying four different floors of a building. This is suggestive of a common occurrence of multistoreyed structures in the region. This paper attempts to establish that the people inhabiting this rugged earthquake prone terrain have evolved the art of constructing earthquake safe structures well before the evolution of the structural engineering principles governing such a construction.

Detailed investigations were undertaken in the area to establish the antiquity of the traditional structures, as were also earthquake safety provisions incorporated traditionally in these. Radiocarbon dating of the wood used in the structures was used to establish the time of the construction of these structures.

Investigations suggest that the region has evolved a distinct, elaborate and magnificent earthquake‐safe construction style. This construction style, designated Koti Banal architecture, attained its zenith around 880 years ago. This architectural style exhibits the existence of elaborate procedures for site selection, preparing the platform for raising the multistoreyed structure, also for the detail of the entire structure that was constructed on principles somewhat akin to that of framed structures of modern times.

The representative structures of this architecture are observed to be deteriorating fast due to lack of patronage, resources and awareness. This article brings forth awareness regarding the heritage value of these structures, enabling organized efforts for the conservation and upkeep of these structures.

This article is the result of original research undertaken by the authors and paves the way for the conservation of the age old traditional structures.

The purpose of this paper is to offer two Web-based platforms for systematic analysis of seismic processes. Both platforms are designed to analyze and forecast the state of the environment and, in particular, the level of seismic hazard. The first platform analyzes the fields representing the properties of the seismic process; the second platform forecasts strong earthquakes. Earthquake forecasting is based on a new one-class classification method.

The paper suggests an approach to systematic forecasting of earthquakes and examines the results of tests. This approach is based on a new method of machine learning, called the method of the minimum area of alarm. The method allows to construct a forecast rule that optimizes the probability of detecting target earthquakes in a learning sample set, provided that the area of the alarm zone does not exceed a predetermined one.

The paper presents two platforms alongside the method of analysis. It was shown that these platforms can be used for systematic analysis of seismic process. By testing of the earthquake forecasting method in several regions, it was shown that the method of the minimum area of alarm has satisfactory forecast quality.

The described technology has two advantages: simplicity of configuration for a new problem area and a combination of interactive easy analysis supported by intuitive operations and a simplified user interface with a detailed, comprehensive analysis of spatio-temporal processes intended for specialists. The method of the minimum area of alarm solves the problem of one-class classification. The method is original. It uses in training the precedents of anomalous objects and statistically takes into account normal objects.

The purpose of this paper is to present an integrative review of the literature to understand the underlying risks of tectonic plate movements, earthquakes and possible earth tremors on Bangladesh as a country filled with waterways.

This study presents a review of seismic activities to present an overview of the active tectonic architecture of the region and its seismic potential with past consequence in Bangladesh region and its immediate surroundings. For the purpose of this review, peer-reviewed journals and electronic databases are the main sources for identifying studies, along with conference proceedings from the similar events and networks.

Review reveals that Bangladesh sits on three tectonic plates atop the world’s largest river delta and has blind faults, shallow faults and high amplified liquefiable zones. It has experienced few devastating earthquakes but most of the records are not documented and also a lack of proper seismic equipment could not record all the events. Also Bangladesh is ill prepared to tackle the aftermath of any strong earthquake and if an earthquake with 7 Mw or greater magnitude occurred, it would leave Bangladesh blighted by a catastrophic disaster with significant destruction of infrastructure, fire outbreaks resulting from breakdown of gas piping systems, fire from collapsed electrical lines and disruption of water connections both in urban and rural centres with greater impact on industrial cities that may not have adhered to standard building codes.

This paper outlined the necessity of an earthquake hazard catalogue, also preparation in sense of seismic risk mitigation and influence of decision-makers, policy institutes and professionals in ensuring infrastructure development and the building code provides for a safe environment and resilient buildings that can reduce or eliminate the risks.