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Article
Publication date: 12 December 2023

Hamid Naseri, Tadeh Zirakian and Hossein Showkati

Vertical cylindrical welded steel tanks are typical thin-walled structures that are very susceptible to buckling under settlement. The major concern in the design of these…

15

Abstract

Purpose

Vertical cylindrical welded steel tanks are typical thin-walled structures that are very susceptible to buckling under settlement. The major concern in the design of these thin-walled structures is buckling failure. On this basis and by considering the findings of the previously reported research works, the stability performance of open-top steel tanks with various industrial applications under local support edge settlement is further investigated in this paper. This study aims to contribute to the current state-of-the-art in the design and retrofit of such thin-walled structures.

Design/methodology/approach

The buckling behaviors of numerous cylindrical shell models with various height-to-radius, radius-to-thickness and settlement span ratios are investigated through linear and nonlinear buckling analyses. The effects of addition of a top stiffening ring on the buckling behavior of cylindrical steel tanks are studied as well.

Findings

This parametric study demonstrates that the choice of the height-to-radius, radius-to-thickness and settlement span ratios as well as addition of the top stiffening ring can be quite effective on the stiffness and strength performances, deformations and stress distribution as well as intensity of vertical cylindrical welded steel tanks subjected to local support edge settlement.

Originality/value

This research endeavor was formulated on the basis of a comprehensive literature survey and demonstrates the relationship between geometrical as well as stiffening features and buckling stability performance of open-top tanks subjected to local support edge settlement and also provides practical recommendations for design and retrofit purposes.

Details

World Journal of Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 3 March 2023

Ebru Ergöz Karahan, Özgür Göçer, Didem Boyacıoğlu and Pranita Shrestha

The main objective of this paper is to critically assess sustainable development in the context of Behramkale, a vernacular village in Türkiye.

Abstract

Purpose

The main objective of this paper is to critically assess sustainable development in the context of Behramkale, a vernacular village in Türkiye.

Design/methodology/approach

Vernacular Heritage Sustainable Architecture analysis framework has been adopted to understand and assess vernacular architecture and sustainable development in Behramkale.

Findings

The vernacular design of the old Behramkale settlement has shown more sustainable characteristics as compared to the new development area. Key findings show that trade-offs were made with respect to environmental and sociocultural aspects of sustainable development to achieve economic sustainability.

Research limitations/implications

Future research with more in-depth interviews would be helpful to find out the inhabitants’ response to the conservation practices.

Practical implications

Based on the research conducted, life cycle analysis and sustainable strategies of vernacular settlements can be useful tools to design, develop and improve old settlements, as well as newly established settlements.

Social implications

Key lessons learned from conservation practices can help to identify well-adapted solutions to respond to the needs of local communities in Türkiye and similar vernacular settlements in the Mediterranean region.

Originality/value

This paper critically assesses sustainable development in the context of vernacular architecture, heritage conservation and rural sustainability. Conservation practices in Türkiye are evaluated deeply as there is limited research in this field within the Mediterranean heritage conversation and sustainable development context.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2044-1266

Keywords

Article
Publication date: 4 April 2023

Soumaya Hadri, Souhila Rehab Bekkouche and Salah Messast

The paper aims to present an experimental and numerical investigation of the load–settlement behavior of soil reinforced by stone column, as well as to evaluate the plane strain…

Abstract

Purpose

The paper aims to present an experimental and numerical investigation of the load–settlement behavior of soil reinforced by stone column, as well as to evaluate the plane strain unit cell model for the analysis of stone columns.

Design/methodology/approach

The numerical analysis was done using both axisymmetric and plane strain models. The elastic perfectly plastic behavior of Mohr–Coulomb was adopted for both soil and column material. The numerical results of this study were validated by the comparison with the in-situ measurements of a full-scale loading test on a stone column. This study also evaluated the effect of different parameters involved in the design of a stone column, including Young’s modulus of the column material, column diameter, spacing between the stone columns and Poisson’s ratio of the column material.

Findings

After the numerical simulation, the results from both axisymmetric and plane strain models are quite comparable. In addition, the numerical results revealed that the stone column with low spacing, a large diameter and a high Young’s modulus indicated better behavior against the settlement.

Originality/value

The axisymmetric unit cell model was used in many numerical studies on the behavior of stone columns. In the present work, a field load test on stone column was simulated using a plane strain unit cell model. This research adds that the plane strain unit cell model can be used to predict the settlement of reinforced soil with stone columns.

Details

World Journal of Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 9 April 2024

Selma Bahi and Mohamed Nabil Houhou

This study aims to investigate the behavior of different types of stone columns, including the short and floating columns, as well as the ordinary and the geosynthetic encased…

Abstract

Purpose

This study aims to investigate the behavior of different types of stone columns, including the short and floating columns, as well as the ordinary and the geosynthetic encased stone columns (OSC and GESC). The effectiveness of the geosynthetic encasement and the impact of the installation using the lateral expansion method on the column performance is evaluated through a three-dimensional (3D) unit cell numerical analysis.

Design/methodology/approach

A full 3D numerical analysis is carried out using the explicit finite element code PLAXIS 3D to examine the installation influence on settlement reduction (ß), lateral displacement (Ux) and vertical displacement (Uz) relative to different values of lateral expansion of the column (0% to 15%).

Findings

The findings demonstrate the superior performance of GESC, particularly short columns outperforming floating counterparts. This enhanced performance is attributed to the combined effects of geosynthetic encasement and increased lateral expansion. Notably, these strategies contribute significantly to decreasing lateral displacement (Ux) at the column’s edge and reducing vertical displacement (Uz) under the rigid footing.

Originality/value

In contrast to previous studies that examined the installation effect of OSC contexts, this paper presents a comprehensive investigation into the effect of geosynthetic encasement and the installation effects using the lateral expansion method in very soft soil, using 3D numerical simulation. The study emphasizes the significance of the consideration of geosynthetic encasement and lateral expansion of the column during the design process to enhance column performance.

Details

World Journal of Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 9 December 2022

Muizz Oladapo Sanni-Anibire and Yusuf A. Adenle

Vertical urban settlements are becoming the predominant form of contemporary urban design in response to population increase and rapid urbanization. These developments are…

Abstract

Purpose

Vertical urban settlements are becoming the predominant form of contemporary urban design in response to population increase and rapid urbanization. These developments are, however, perceived to be poorly designed and incongruent with the users’ needs. The purpose of this study was to present a resident satisfaction assessment of Hong Kong’s vertical settlements.

Design/methodology/approach

A review of the literature was conducted on the concept of vertical urbanism, residential satisfaction and postoccupancy evaluation. Fifty performance indicators were classified into three groups including indoor environment, safety and maintenance; furniture, utilities and spaces; and privacy, appearance and city life. These indicators were used to develop a Web-based questionnaire administered to residents in the three administrative regions of Hong Kong. Ninety-eight respondents participated in the study, and the results were analyzed using the resident satisfaction index and the overall satisfaction index. A multilinear regression analysis was also made to develop a model describing the most relevant performance indicators for determining the overall residential satisfaction.

Findings

The results revealed that residents expressed dissatisfaction with performance indicators, including “level of noise generated from outside the building (neighboring buildings, traffic, noise, etc.),” “variation and stability of indoor temperature,” “sustainable design of the building’s environment (cyclability, walkability, electric charging stations, etc.),” “availability and capacity of car parking,” “size and adequacy of spaces for social interaction” and “considerations for occupants with special needs (disabled, aged people, children, occupants with a medical condition, etc.).” The results also revealed that some indicators such as the maintenance of elevators, adequate interior space and surrounding areas were considered as significantly influencing residential satisfaction. Similarly, the building height and wind-induced motion were not significantly influencing residential satisfaction. The results also revealed that a multilinear Regression model with five variables and an adjusted R2 value of 93% could estimate the overall residential satisfaction.

Originality/value

The concept of vertical urban design is the new paradigm in the shaping of future cities. The originality of this study is its adoption of post-occupancy evaluation to assess occupants’ residential satisfaction. As well as the determination of factors that should inform the planning, design and management of vertical urban settlements. Thus, the study has significant implications for research in vertical urban development, as well as the professional practice of building and urban planners, designers and managers.

Details

Journal of Engineering, Design and Technology , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1726-0531

Keywords

Article
Publication date: 16 September 2022

Naimeh Rezaei and Abdelaziz Khouadja

The ancient settlements of the M'zab Valley in Algeria, called ksour, are still being used by local inhabitants a thousand years after their construction. The main objective of…

Abstract

Purpose

The ancient settlements of the M'zab Valley in Algeria, called ksour, are still being used by local inhabitants a thousand years after their construction. The main objective of this study was to discover why, despite the formation of new residential areas, these settlements have been able to survive and maintain their original functions.

Design/methodology/approach

The authors used the concept of living heritage sites as an analytical framework. The field data were collected through semi-structured interviews and analyzed through qualitative content analysis.

Findings

This study revealed that the reasons for the survival of these settlements were cultural and social rather than physical. Four main factors play a role in the survival of these settlements: (1) solidarity and unity among the inhabitants, (2) built environment as an ancestral heritage and a symbol of identity, (3) comfort and convenience in ksour and (4) social control and adherence to tradition. However, some concerns have arisen in recent decades that may endanger the viability of these settlements in the future, requiring more attention from the government.

Originality/value

While previous studies on urban heritage and World Heritage Sites (WHSs) have mainly focused on tourism development and conservation issues, this paper emphasized a less-studied aspect of these sites, i.e. continuity and sustainability. All previous studies on the WHSs of the M'zab Valley have addressed the traditional architecture and the climatic design of houses without sufficiently addressing other factors that have contributed to the sustainability and resilience of these settlements.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2044-1266

Keywords

Open Access
Article
Publication date: 28 February 2023

Jan Marais Hugo and Paul Walter Sonnendecker

The adverse impacts of climate change coupled with rapid informal urbanization in the Southern African region are increasing the vulnerability of already sensitive population…

1019

Abstract

Purpose

The adverse impacts of climate change coupled with rapid informal urbanization in the Southern African region are increasing the vulnerability of already sensitive population groups. Consequently, these urban regions are highly vulnerable to urban heat island effects and heatwaves due to exogenous and endogenous factors. While the dynamic interplay between the built environment, climate and response strategies is known, this paper highlights the lived experience of informal settlement residents. It presents work from a project undertaken in Melusi, an informal settlement in Tshwane, South Africa, as a multi-disciplinary project focusing on improving the local resilience to climate change associated heat stress.

Design/methodology/approach

Following a mixed method approach, a semi-structured observational analysis of the spatial layout and material articulation of selected dwellings along with the continuous monitoring and recording of their indoor environments were undertaken.

Findings

The paper presents the research results in terms of the dwelling characteristics, as spatial and material-use strategies and documented heat stress exposure in these structures. The findings highlight that informal dwellings perform poorly in all cases due to endogenous factors and that inhabitants experience extreme heat stress conditions for between 6 and 10 h daily during the peak summer period.

Originality/value

Currently, there are little empirical data on the heat stress residents living in informal settlements in Southern Africa are experiencing. This article provides insight into the indoor environments of informal dwellings and hopes to contribute future guidelines or heat health policies.

Details

Smart and Sustainable Built Environment, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2046-6099

Keywords

Article
Publication date: 31 May 2022

Naima Benkari

Through a project of cooperation between the Ministry of Heritage and Tourism (MHT) and Sultan Qaboos University (SQU), a team including faculty members, technicians and students…

194

Abstract

Purpose

Through a project of cooperation between the Ministry of Heritage and Tourism (MHT) and Sultan Qaboos University (SQU), a team including faculty members, technicians and students from the SQU department of civil and architectural engineering (CAE), was involved in the project of documentation, survey and the development of management plans of four (4) Omani Vernacular settlements (Harat). Such an experience was meant to initiate students from different levels in undergraduate programs of civil and architectural engineering to the fieldwork and professional practice in the field of built heritage studies. The present research aims to explore the effect of such an experience on the learning process and skills acquired by the involved students.

Design/methodology/approach

The research was undertaken with students of CAE undergraduate programs at SQU. The documentation method has been implemented in 4 different settlements with the same students. A questionnaire has been administered to the participating students after their graduation to collect their feedback regarding the benefits of this experience on their education and skills development. The data was complemented by active observation and semi-directive interviews with some students randomly selected among the respondents to the questionnaire.

Findings

The outcome of each documentation campaign as well as the results of the questionnaires administered revealed that this experience has raised students' awareness about the importance of studying the built heritage and safeguarding it. The research has shown that important soft skills, such as team-working, leadership and communication, have been consolidated. It has also revealed that this experience was an opportunity for students to discover the variety of options within the profession of architecture and its intellectual and ethical responsibilities. Such aspects are hardly grasped when taught within a “classical” teaching/learning setting.

Research limitations/implications

The main limitations of this research were the hard working conditions during the summer in Oman and the direct interaction of the students with the buildings. Even cautious, such interaction represents a risk for an already fragile heritage.

Practical implications

The paper includes a detailed description of the architectural documentation tools and methods used in the case studies. These tools and methods can easily be applicable, with slight adaptations, in other architectural documentation projects involving undergraduate students. The documentation methodology and the generated corpus of 3D digital models can be used in other documentation projects and further studies such as architectural typologies, bioclimatic properties, natural ventilation patterns, daylight performance, etc.

Originality/value

This paper reports on the outcomes of the first experience of its kind in Oman and the Gulf region, where undergraduate students (predominantly females) were involved in an interdisciplinary project for the documentation of important vernacular settlements and their buildings. The added value of this research is that its methodology can be a reference for professors of Architecture and related specialties aiming to integrate research and field work with education.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2044-1266

Keywords

Article
Publication date: 28 March 2024

Nadia Caidi, Saadia Muzaffar and Elizabeth Kalbfleisch

This pan-Canadian study examines the information practices of STEM-trained immigrant women to Canada as they navigate workfinding and workplace integration. Our study focuses on a…

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Abstract

Purpose

This pan-Canadian study examines the information practices of STEM-trained immigrant women to Canada as they navigate workfinding and workplace integration. Our study focuses on a population of highly skilled immigrant women from across Canada and uses an information practice lens to examine their lived experiences of migration and labour market integration. As highly trained STEM professionals in pursuit of employment, our participants have specific needs and challenges, and as we explore these, we consider the intersection of their information practices with government policies, settlement services and the hiring practices of STEM employers.

Design/methodology/approach

We conducted a qualitative study using in-depth interviews with 74 immigrant women across 13 Canadian provinces and territories to understand the nature of their engagement with employment-seeking in STEM sectors. This article reports the findings related to the settlement and information experiences of the immigrant women as they navigate new information landscapes.

Findings

As immigrants, as women and as STEM professionals, the experiences of the 74 participants reflect both marginality and privilege. The reality of their intersectional identities is that these women may not be well-served by broader settlement resources targeting newcomers, but neither are the specific conventions of networking and job-seeking in the STEM sectors in Canada fully apparent or accessible to them. The findings also point to the broader systemic and contextual factors that participants have to navigate and that shape in a major way their workfinding journeys.

Originality/value

The findings of this pan-Canadian study have theoretical and practical implications for policy and research. Through interviews with these STEM professionals, we highlight the barriers and challenges of an under-studied category of migrants (the highly skilled and “desirable” type of immigrants). We provide a critical discussion of their settlement experiences and expose the idiosyncrasies of a system that claims to value skilled talent while structurally making it very difficult to deliver on its promises to recruit and retain highly qualified personnel. Our findings point to specific aspects of these skilled professionals’ experiences, as well as the broader systemic and contextual factors that shape their workfinding journey.

Details

Journal of Documentation, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0022-0418

Keywords

Article
Publication date: 12 April 2022

Simay Cansu Ekici, Özgün Özçakır and Ayşe Güliz Bilgin Altinöz

This paper aims to address the issue of the conservation and management of rural cultural heritage, with the aim being to gain an understanding of current problems and needs…

Abstract

Purpose

This paper aims to address the issue of the conservation and management of rural cultural heritage, with the aim being to gain an understanding of current problems and needs through a participatory approach, in recognition of the uniqueness of the relationship between nature, humankind and the built environment as an area of study. To this end, a comprehensive case study – Kemer Village in Turkey – focusing on the social sustainability and participatory approaches for the sustainable development of rural settlements is given. Accordingly, possible conservation, management and sustainability strategies are put forward considering the priorities and perspectives of different stakeholders.

Design/methodology/approach

This paper approaches the subject of rural heritage conservation and management from a social sustainability standpoint, involving an on-site investigation to understand the physical and social context of Kemer Village in Turkey, which has links to different periods in history, and contains significant examples of vernacular architecture and that has maintained its cultural characteristics. Tools and criteria for participatory planning approach were applied ensuring the involvement of the local community and stakeholders.

Findings

The findings of the present study reveal rural settlements to be important factors in the cultural heritage conservation and indicate the importance of prescient management and the adoption of a sustainable development model. Achieving the desired level of sustainability in historical villages through conservation of the built environment with the involvement of the local community is possible, as can be seen in the case of Kemer Village in Turkey, where the villagers and the local authorities worked in cooperation to ensure the preservation of the village's integrity.

Originality/value

This study will describe possible long-term strategies and actions aimed at involving the local community in the sustainable conservation of the rural cultural heritage while also embracing change. It is important that the concept of sustainability is realized with participatory planning methods. In addition to that, rural heritage and social sustainability together incorporate a widespread but rarely considered set of issues addressing local needs in conservation.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2044-1266

Keywords

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