Person: KAZAZOĞLU, Senem Seyis
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Senem Seyis
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KAZAZOĞLU
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ArticlePublication Metadata only Multi-criteria decision-making model for risk management in modular construction projects(Taylor & Francis, 2024) Khodabocus, Sabah Fatima; Seyis, Senem; Civil Engineering; KAZAZOĞLU, Senem Seyis; Khodabocus, Sabah FatimaThe modular sector needs a precise guide to determine the most efficient risk management approaches. The main research objective of this study is to develop a multi-criteria decision-making model to find the most efficient risk management approach according to the relevant risk criteria. The risk criteria and risk management approaches for modular construction projects were also identified and classified within this scope. A systematic literature review, semi-structured interviews, and open-ended questionnaires were performed for identification and classification purposes. For ranking and quantifying the identified risks and risk approaches, as well as developing the decision-making model, the Delphi method and the Analytical Hierarchy Process (AHP) were conducted. A two-round Delphi method, with eleven experts, was conducted to achieve efficient performance scores of the identified risk management approaches. The percentage standard deviation decreased, Relative Importance Index (RII), Cronbach’s alpha, and Kendall’s coefficient of concordance (Kendall’s W) were calculated to ensure the outputs’ reliability, validity, and agreement level. The AHP method opted to quantify the Delphi method outputs, solve the multi-criteria decision-making process, and develop the multi-criteria decision-making model for risk management of modular construction projects. Triangulation results show that the critical risk categories are supply chain, health and safety, stakeholders, and governmental support. Lean principles such as the Last Planner System, Value Stream Mapping, Just in Time, and Kaizen are top-rated risk management approaches. This research’s novelty is identifying and analyzing crucial risk categories, providing the relevant risk management approaches ranked according to efficiency performance, and presenting a decision-making model as a guideline for risk management of modular construction projects.ArticlePublication Open Access Case study for comparative analysis of BIM-based LEED building and nonLEED building(Pamukkale Üniversitesi, 2022) Seyis, Senem; Civil Engineering; KAZAZOĞLU, Senem SeyisThe objective of this study is to design a sustainable high-rise residential building using Leadership in Energy and Environmental Design (LEED) and Building Information Modeling (BIM), and perform comparative analysis for the LEED building and non-LEED building. Within this scope, break-even points of these buildings’ water and energy consumptions as well as additional costs related to sustainability were analyzed. The research methodology relies on the literature review and case study. In the case study, the 3D model of a 15-storey residential building was designed via Autodesk Revit 2019 based on the LEED v4.1 Building Design and Construction (BD+C) rating system. The case study building can achieve 31 credits and 9 prerequisites which allow to obtain 61 points and LEED Gold certificate. By applying LEED v4.1 BD+C procedures, water consumption of the building was reduced by 65.96%, and energy consumption of the building was decreased by 59%. The initial cost of this LEED building is 1.074.833,04 TL which is 852.230.64 TL higher than the initial cost of non-LEED building. According to the break-even point calculations, the initial cost of LEED building can be charged after 13 years 8 months and 12 days. Results make a significant contribution to the literature and industry by showing the requirements and design process of a high-rise residential building using LEED and BIM. This study adds original value to the literature and industry by ensuring practitioners and researchers with constructive information about the energy, water, and cost performance of the LEED buildings. Further, results provide an insight to professionals in the architecture, engineering, and construction industry about the value of green buildings.ArticlePublication Metadata only Science mapping the knowledge domain of energy performance research in the AEC industry: A scientometric analysis(Elsevier, 2023-02-01) Azima, Mahshad; Seyis, Senem; Civil Engineering; KAZAZOĞLU, Senem Seyis; Seyis, SenemThis study aims to reveal the current state of energy performance research in the AEC industry and literature. The research objective is to identify hot topics (i.e., knowledge domain) and hot keywords (i.e., knowledge base), productive countries and institutions, research gaps, and emerging areas in this domain (i.e., knowledge evolution). For this purpose, systematic bibliometric and scientometric analyses were performed by referring to 5489 bibliometric records published between 1991 and 2023. CiteSpace, VOSviewer, and Gephi were used for performing scientometric analysis. The key points include (1) promoting research collaborations between countries and institutions, (2) uncovering gaps and requirements of optimizing energy performance through pre-construction, construction as well as operation and maintenance phases, (3) identifying the target market for stakeholders, investors, and policymakers, and (4) guiding to determine the common grounds for international regulations and policies. Further, this study presents a knowledge map summarizing the prominent research results. The contribution is to provide a holistic comprehension of the recent status, hot keywords and topics, productive countries and institutions, research gaps, and emerging areas of energy performance. The gaps revealed in this study show possible future research directions, necessities, and the fields that should be investigated. Accordingly, this research would be a valuable guideline for professionals focusing on energy performance.ArticlePublication Metadata only Pros and cons of using building information modeling in the aec industry(American Society of Civil Engineers, 2019-08-01) Seyis, Senem; Civil Engineering; KAZAZOĞLU, Senem SeyisAlthough a plethora of studies on building information modeling (BIM) have been conducted in the last decade, none of the previous studies collate and/or prioritize the benefits, risks, and challenges of BIM based on the data collected from a comprehensive literature review and subject matter experts (SMEs). In order to allow architecture, engineering, and construction (AEC) professionals and academics see the true potential of BIM in a wider context and help them understand its multiorganizational and multidisciplinary functions, there is an obvious necessity for identifying, classifying, and prioritizing the pros and cons of BIM; however, such a study is still currently absent in the AEC literature. The aim of this study is to identify, classify, and rank the pros and cons of BIM that address the benefits, challenges, and risks of BIM in the transition from computer-aided design (CAD). A literature review was performed and face-to-face semistructured interviews with SMEs on BIM were conducted for identification and classification purposes. A total of 41 types of benefits, 11 types of risks, and 13 types of challenges of BIM were identified via triangulation of literature review and face-to-face semistructured interviews with SMEs. The Delphi method was performed for prioritizing the benefits of BIM in terms of time, cost, and sustainability as well as the risks and challenges of BIM encountered in the transition process from CAD to BIM. The interrater agreement and significance-level statistics were performed to analyze and validate the consensus reached by the Delphi panel experts. This paper contributes to the existing body of knowledge on BIM by providing comprehensive identification and classification of the benefits, challenges, and risks of BIM, and prioritization of the benefits for BIM in terms of time, cost, and sustainability as well as the risks and challenges of BIM. The priority rankings of benefits, risks, and challenges of BIM ensure successful completion of projects and create additional value by allowing professionals to make well-informed decisions that support decreasing time and cost-related waste in the transition process from CAD to BIM.ArticlePublication Open Access Evaluating the impact of building envelope on energy performance: Cooling analyses(Golden Light Publishing, 2022-03-31) Azima, Mahshad; Seyis, Senem; Civil Engineering; KAZAZOĞLU, Senem Seyis; Azima, MahshadBuildings require a significant amount of energy for heating, cooling, and lighting. Hence, building energy performance has become one of the most important topics in the architecture, engineering, and construction (AEC) industry in the last decade. The building envelope plays a critical role in maximizing energy efficiency and decreasing energy consumption generally. The research objective of this study is to examine and compare the effects of three different building envelope types on energy performance in a high-rise residential building. A literature review and case study were performed for achieving the research objective of this study. In the literature review, records (i.e., journal articles, conference proceedings, and scientific reports) published between 2011 and 2021 were included, and Web of Science and Scopus databases were used. In the case study, passive methods including building design, orientation, insulation, and window-to-wall ratio were employed for a 10-story reinforced concrete residential building in Istanbul, Turkey. The energy performance of the different wall, insulation, and glass components utilized in the building was analyzed and compared via DesignBuilder software. Findings show that each parameter and material have a significant impact on the energy performance of a structure. This research would make a noteworthy contribution to the AEC literature and industry by analyzing the energy performance of different building envelope types and the appropriate scenarios based on the location. The results of this study can be used by policymakers and decisionmakers to revise existing codes and policies for new high-rise buildings.ArticlePublication Metadata only Mixed method review for integrating building information modeling and life-cycle assessments(Elsevier, 2020-04-15) Seyis, Senem; Civil Engineering; KAZAZOĞLU, Senem SeyisPrevious studies have suggested that building information modeling (BIM) and life-cycle assessments (LCAs) could be integrated to quantify and alleviate the environmental effects of buildings while simplifying and optimizing data acquisition. However, there has been no expert-based research into the true potential of BIM-based LCAs in a wider context with consideration of the advantages and disadvantages. This study aims to identify, classify, and prioritize these advantages and disadvantages using mixed methodological research and subject matter experts (SMEs). This includes a comprehensive literary review, semi-structured interviews with SMEs, and use of the Delphi method. A total of 21 advantages and 7 disadvantages associated with BIM-based LCAs were identified and classified. The advantages were grouped into four categories: decision making, material selection, sustainability performance, and waste reduction. The disadvantages were grouped into two categories: standardization and data processing. The Delphi method was applied via two rounds of questionnaires with ten SMEs to prioritize the advantages and disadvantages. The results of this study will provide practitioners and researchers with constructive information for the integrated use of BIM and LCAs and will create awareness in the architecture, engineering, and construction industry. The identified disadvantages show the requirements for future work and the priority rankings for both the advantages and disadvantages could be used by researchers and key stakeholders.ArticlePublication Metadata only Mapping the scientific research of the life cycle assessment in the construction industry: A scientometric analysis(Elsevier, 2021-10-15) Yılmaz, Y.; Seyis, Senem; Civil Engineering; KAZAZOĞLU, Senem SeyisThe interest toward the life cycle assessment studies in the construction industry has been increasing in the last decades. However, there is no existing study that focuses on mapping the scientific research of the LCAs in the construction industry with a comprehensive understanding. Hence, an expansive and macro level study of the LCAs within the subject domain is necessary to fulfill this gap in the literature. The research objective of this study is to reveal the status quo, hot topics and keywords, and emerging areas of the LCA research in the construction industry. For this purpose, systematic bibliometric and scientometric analyses were conducted by referring 2885 bibliometric records published between 1997 and 2021 (end of February). The analyses indicated China, USA, and Spain as the most productive countries in the field. Additionally, hot keywords in the domain revealed as ‘energy’, ‘environmental impact’, ‘sustainability’, ‘performance’, ‘emission’, ‘building’, ‘system’, ‘design’, and ‘concrete’. ‘Circular economy’, ‘mechanical property’, and ‘footprint’ are found as the emerging areas of this field. Document co-citation clusters showed the hot research themes of the domain as building information modeling (BIM), energy performance, construction and demolition waste, carbonation, water supply, bridge design, optimization, pavement management, ventilation, and design assessment. The results of this research make a significant contribution to the scientific community and industry practitioners by providing an inclusive understanding of the recent status, hot keywords and topics, and emerging areas of the life cycle assessment in the construction industry. Further, this study would be a useful and valuable reference and guideline for the researchers interested in this field.Conference ObjectPublication Open Access Identification of common data environment functions during construction phase of BIM-based projects(Luxembourg Institute of Science and Technology, 2021-10) Özkan, Selen; Seyis, Senem; Civil Engineering; ÖZKAN, Selen; KAZAZOĞLU, Senem SeyisThe utilization of building information modeling (BIM) has been rapidly increasing in the last decade as it stimulates project constructability, quality, efficiency, and success. A well-structured and organized information system is the major requirement to ensure adequate collection, management and dissemination of documentation and the central BIM-model for the whole project team. This consistent source of information, called as the common data environment (CDE), carries an important role to achieve a centralized information system in the BIM-based construction projects. Despite the general perception, common data environments (CDEs) should not be considered only as a digital storage and sharing space. A CDE system, set up at the beginning of the project according to the international standards, can support the successful project management by providing instant insights related to the project performance and eliminating non-value adding activities (e.g., rework, defect). Although the CDE is an ultimate necessity for a data-driven construction project management, the literature remains quite incapable of revealing the functions of the CDE system. The aim of this study is to identify and categorize the CDE functions used in the construction phase of BIM-based projects. In the first step, possible CDE functions were derived from a literature review and online sources. In the second step, semi-structured focused interviews were conducted with five subject matter experts who use the CDE system efficiently in the international BIM-based construction projects. This methodology allows to link aspects of different perspectives and achieve meaningful and reliable outputs. The results will provide valuable information about the CDE functions in the BIM-based construction projects to practitioners and researchers. Further, this research can create awareness about the CDEs and encourage the use of CDEs in the BIM projects.Conference ObjectPublication Metadata only Feature extraction for enhancing data-driven urban building energy models(European Council on Computing in Construction (EC3), 2023) Bolluk, Muhammed Said; Seyis, Senem; Aydoğan, Reyhan; Computer Science; Civil Engineering; KAZAZOĞLU, Senem Seyis; AYDOĞAN, Reyhan; Bolluk, Muhammed SaidBuilding energy demand assessment plays a crucial role in designing energy-efficient building stocks. However, most studies adopting a data-driven approach feel the deficiency of datasets with building-specific information in building energy consumption estimation. Hence, the research objective of this study is to extract new features within the climate, demographic, and building use type categories and increase the accuracy of a non-parametric regression model that estimates the energy consumption of a building stock in Seattle. The results show that adding new features to the original dataset from the building use type category increased the regression results with a 6.8% less error and a 30.8% higher R2 Score. Therefore, this study shows that building energy consumption estimation can be enhanced via new feature extraction equipped with domain knowledge.Conference ObjectPublication Metadata only A simplified guide on BIM integration to mitigate facilities management risks of modular construction projects(Springer, 2022) Khodabocus, Sabah Fatima; Seyis, Senem; Civil Engineering; KAZAZOĞLU, Senem Seyis; Khodabocus, Sabah FatimaBuilding Information Modelling (BIM) has been upscaling throughout the years being highly interoperable. In modular construction, projects have limited scope for alterations at later stages because of exorbitant costs. It is preferable to start with an accurate and well-established platform that will automatically clear obstacles at later stages. As with any project, risks are to be encountered. In this study, Facilities Management (FM) risks are analyzed and BIM-linked approaches are brought together as a guide. The input was derived from a literature review and given the limited studies performed in this scope, interviews with six experts who also validated the outputs have boosted overall quality. Since the modular sector has not yet witnessed early FM integrations with BIM platforms, this investigation had as aim to pave the path for this subject. For modular construction projects to perform to their full efficacy, early involvements are the key. In the study, sub-categories that involve maintenance of module and space management, energy analysis, quality and safety were deemed as major contributors to FM risks if not handled correctly. Being interconnected, cost, scheduling, and quality equally impact the project. For instance, without prior planning for accessing faulty facilities, the facility manager in charge would dedicate more time to figure out another path that could hinder designated quality standards. BIM integration acts as visual aid and database containing project attributes. This study forms simplified guides with suggestions on BIM platforms that modular construction projects can adopt for tackling FM risks while early integrating designers with facilities managers.