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| 2. |
- Jalilzadehazhari, Elaheh, 1985-, et al.
(författare)
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Achieving a trade‐off construction solution using BIM, an optimization algorithm, and a multi‐criteria decision‐making method
- 2019
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Ingår i: Buildings. - Basel, Switzerland : MDPI. - 2075-5309. ; 9:4, s. 1-14
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Tidskriftsartikel (refereegranskat)abstract
- The Energy Performance of Building Directive obligated all European countries to reduce the energy requirements of buildings while simultaneously improving indoor environment quality. Any such improvements not only enhance the health of the occupants and their productivity, but also provide further economic benefits at the national level. Accomplishing this task requires a method that allows building professionals to resolve conflicts between visual and thermal comfort, energy demands, and life‐cycle costs. To overcome these conflicts, this study exploits the incorporation of building information modelling (BIM), the design of experiments as an optimization algorithm, and the analytical hierarchy process (AHP) into a multi‐criteria decision‐ making method. Any such incorporation can (i) create constructive communication between building professionals, such as architects, engineers, and energy experts; (ii) allow the analysis of the performance of multiple construction solutions with respect to visual and thermal comfort, energy demand, and life‐cycle costs; and (iii) help to select a trade‐off solution, thereby making a suitable decision. Three types of energy‐efficient windows, and five types of ground floors, roofs, and external wall constructions were considered as optimization variables. The incorporation of several methods allowed the analysis of the performance of 375 construction solutions based on a combination of optimization variables, and helped to select a trade‐off solution. The results showed the strength of incorporation for analyzing big‐data through the intelligent use of BIM and a simulation in the field of the built environment, energy, and costs. However, when applying AHP, the results are strongly contingent on pairwise comparisons
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| 3. |
- Isaksson, Anders, 1965, et al.
(författare)
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BIM use in the production process among medium sized contractors : A survey of Swedish medium sized contractors
- 2016
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Konferensbidrag (refereegranskat)abstract
- Building Information Modelling (BIM) is claimed to transform the AEC industry, whereas current research has argued that diffusion of BIM use proceeds at a slower rate than the optimistic predictions. However, governmental initiatives where public clients in countries like Finland, Singapore, United Kingdom and Sweden start to require a Building Information Model as a part of the project delivery, are supposed to increase the pace of diffusion of BIM use. Today, larger contractor firms use BIM to a varying extent. But BIM use in mid-sized contractor firms, with 50 – 500 employees, which successfully can compete with larger contractors on projects up to 50 million Euros, is relatively unknown. The aim of the paper is to explore the current use and perceived challenges and driving forces of BIM-implementation among mid-sized contractors. The data used in this study is collected through a survey send to chief executive officers, or their closest sub-ordinates, of mid-sized construction firms in Sweden. The survey is based on a technology-, organization-, environment framework that is used in information systems research in order to study the use of inter-organizational information systems. The total population of firms in the survey is 136. The preliminary results presented in this paper are based on 31 answers (30 percent response rate). 58 percent of the respondents said that they have been involved in a project where BIM has been used in some way. The most commonly used application is visualization. The highest obstacles perceived are that partners are not using BIM, there is no demand from clients, and there is no internal demand in the company. For the two last obstacles there were significant differences between users and non-users. The most common perceived driving forces were that BIM is a means for following the technical development and BIM can give the company competitive advantages. Moreover, the results indicate that the main driver behind BIM-implementation is mainly determined by an individual’s subjective positive or negative evaluation of BIM, rather than by external pressure from clients and partners, or by internal capacity and knowledge to use BIM.
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| 4. |
- Almusaed, Amjad, 1967-, et al.
(författare)
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A Research on the Biophilic Concept upon School's Design from Hot Climate : A Case Study from Iraq
- 2022
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Ingår i: Advances in Materials Science and Engineering. - UK : Hindawi Publishing Corporation. - 1687-8434 .- 1687-8442.
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Tidskriftsartikel (refereegranskat)abstract
- In recent years, there have been solid global trends and severe attempts by ministries of education in the world to improve the reality of educational institutions and schools through the design and construction of schools and educational systems that meet the requirements of the age by applying the concepts of sustainable and effective systems to the new generation. They called for a promising future and hence the need to activate the applications of the biophilic schools. The theme of the biophilic schools is closely related to the concept of sustainable environmental structures that deal with the surrounding natural environment with intimacy, which is one of the most important new methods of design and construction at present, where ecological challenges are powerfully evoked in the making of their design decisions. Biophilic schools are an essential part of a new concept that wants to design revolutionary educational systems with new economic outputs that are valuable but do not depart from the idea of sustainable schools in general. It represents an expression given to schools designed to be environmentally sensitive and healthy for their occupants and educational systems based on experience, humanity, and attraction. Indeed, many architects have begun to explore and develop new architectural designs linked with the concepts of biophilic schools. Through the researchers' awareness of the negative circumstance experienced by school buildings in Iraq and by investing in the recommendations of an applied field research, it was reached to crystallize the research problem represented in the obstacles that schools suffer from, which calls for the search for developmental solutions for an efficient educational environment, and in order to reach this goal, by informing researchers about new global experiences in this field, the research presented its hypothesis in choosing the model of biophilic schools that exist in many countries in the world, because of what it can provide from successful and fruitful educational and urban components. The researchers reached many conclusions and recommendations aimed at applying the research hypothesis and achieving its goals.
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| 5. |
- Movaffaghi, Hamid, et al.
(författare)
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Value-driven design approach for optimal long-span timber-concrete composite floor in multi-storey wooden residential buildings
- 2020
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Ingår i: Civil engineering and environmental systems (Print). - : Taylor & Francis. - 1028-6608 .- 1029-0249. ; 37:3, s. 100-116
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Tidskriftsartikel (refereegranskat)abstract
- Long-span timber-concrete composite (TCC) floor systems have the potential to address the design challenges for conventional wooden floors in residential multi-storey timber frame buildings. The aim of this paper is to develop a design approach for long-span timber-concrete composite floor system of 6-9 m. A framework based on value-driven design approach has been developed for integration of results from graphical multi-objective optimisation, spreadsheet-based analysis, structural static and dynamic finite element analysis, and multi-criteria decision making. To verify the developed framework, a residential five-storey timber frame building as a case study has been studied. Optimal design includes optimised thickness of the concrete and optimised smeared stiffness of connectors for three different comfort classes A to C in descending order. TCC floor with span length 7.3 [m] belonging to comfort class A and TCC floor with span length 9.0 [m] belonging to comfort class C has been chosen as optimal solutions. The results indicate that proposed and innovative design approach is a promising tool for developers, architects and structural engineers when designing optimal long-span timber-concrete composite floor system.
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| 6. |
- Almusaed, Amjad, 1967-, et al.
(författare)
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Reviewing and Integrating AEC Practices into Industry 6.0 : Strategies for Smart and Sustainable Future-Built Environments
- 2023
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Ingår i: Sustainability. - Basel, Switzerland : MDPI. - 2071-1050. ; 15:18
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Tidskriftsartikel (refereegranskat)abstract
- This article explores the possible ramifications of incorporating ideas from AEC Industry 6.0 into the design and construction of intelligent, environmentally friendly, and long-lasting structures. This statement highlights the need to shift away from the current methods seen in the AEC Industry 5.0 to effectively respond to the increasing requirement for creative and environmentally sustainable infrastructures. Modern building techniques have been made more efficient and long-lasting because of AEC Industry 6.0’s cutting-edge equipment, cutting-edge digitalization, and ecologically concerned methods. The academic community has thoroughly dissected the many benefits of AEC Industry 5.0. Examples are increased stakeholder involvement, automation, robotics for optimization, decision structures based on data, and careful resource management. However, the difficulties of implementing AEC Industry 6.0 principles are laid bare in this research. It calls for skilled experts who are current on the latest technologies, coordinate the technical expertise of many stakeholders, orchestrate interoperable standards, and strengthen cybersecurity procedures. This study evaluates how well the principles of Industry 6.0 can create smart, long-lasting, and ecologically sound structures. The goal is to specify how these ideas may revolutionize the building industry. In addition, this research provides an in-depth analysis of how the AEC industry might best adopt AEC Industry 6.0, underscoring the sector-wide significance of this paradigm change. This study thoroughly analyzes AEC Industry 6.0 about big data analytics, the IoT, and collaborative robotics. To better understand the potential and potential pitfalls of incorporating AEC Industry 6.0 principles into the construction of buildings, this study examines the interaction between organizational dynamics, human actors, and robotic systems.
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| 7. |
- Almusaed, Amjad, 1967-, et al.
(författare)
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Analytical interpretation of energy efficiency concepts in the housing design process from hot climate
- 2019
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Ingår i: Journal of Building Engineering. - : Elsevier. - 2352-7102. ; 21, s. 254-266
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Tidskriftsartikel (refereegranskat)abstract
- The classical understanding of an architectural product shows architecture as a series of complex activities, which aims to create an optimal material framework with well-organized functional spaces that can meet the material and human spiritual requirements. The vision of a multifaceted architecture shows that it is necessary to design and work cooperatively with an architectural theory to transform the lateral conceptual viewer of the multilateral design process. The effort has to focus on ensuring the active collaboration of sciences and techniques with the creative building design process. The real stages of house design theory still insufficiently incorporate natural phenomena such as thermography, climatology, aerodynamics, and thermodynamics in the building design approach. The primary target of this research is to define an efficient method of building design in which essential aspects are considered during the first phase of design ideas. The study concluded that using a classical design model is respectable. However, it can bring many mistakes in the confirmation of a holistic design assignment related to energy, thermal comfort, and economic factors that represents an essential tool for architectural creation products where the innovative model proceeds with all design elements, activities and space roles which can reunify in the interpretation of functional spaces by creating an interspace with a consistency habitat environment.
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| 8. |
- Jalilzadehazhari, Elaheh, 1985-, et al.
(författare)
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Developing a decision-making framework for resolving conflicts when selecting windows and blinds
- 2019
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Ingår i: Architectural Engineering and Design Management. - : Taylor & Francis. - 1745-2007 .- 1752-7589. ; 15:5, s. 357-381
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Tidskriftsartikel (refereegranskat)abstract
- Windows and blinds play a significant role in both shaping energy consumption and enhancing indoor comfort. But there are still difficulties with selecting windows and blinds due to the existence of potential conflicts between visual comfort, thermal comfort, energy consumption and life-cycle cost. A literature review was conducted with the purpose of developing a decision-making framework that resolves the conflicts, and allows selecting a window and blind design based on trade-off between visual comfort, thermal comfort, energy consumption and life-cycle cost. The decision-making framework was developed by integrating non-dominated sorting genetic algorithm-II as an optimization algorithm with analytical hierarchy process as a multi-criteria decision-making method. The optimization algorithm considers different window and blind design variables and analyses multiple designs, while the multi-criteria decision-making method ranks the optimization results and selects a trade-off design. An operating package enabled the decision-making framework to be automated. The operating package was obtained by coupling EnergyPlus as a simulation tool and modeFRONTIER as an integration platform. The decision-making framework was developed to select a trade-off window and blind design through intelligent use of simulation in analysing big-data in built environment, energy and cost sectors. Application of the framework ensures the minimum visual and thermal comfort thresholds with the lowest energy demand and cost. Architects and designers can use the framework during the design or renovation phase of residential and commercial buildings.
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| 9. |
- Adamsson, Mathias, et al.
(författare)
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Comparison of Static and Ambulatory Measurements of Illuminance and Spectral Composition That Can Be Used for Assessing Light Exposure in Real Working Environments
- 2019
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Ingår i: LEUKOS The Journal of the Illuminating Engineering Society of North America. - : Taylor & Francis. - 1550-2724 .- 1550-2716. ; 15:2-3, s. 181-194
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Tidskriftsartikel (refereegranskat)abstract
- Reliable measurements are of utmost importance when investigating the relationship between light and human reactions. The aim of the present study was to compare two methods for measuring light exposure in real working environments. Ambulatory recordings of illuminance and irradiance were compared with static field measurements of horizontal illuminance at the normal working position, average horizontal illuminance in the room, vertical illuminance at the position of the eye in the normal angle of gaze, and spectral composition of the light radiation at the normal working position and at the position of the eye in the normal angle of gaze. The ambulatory measurements were carried out during a 3-day experimental period and were repeated monthly throughout the year. The static field measurements in the subjects’ offices were conducted five times during the year, in the morning and afternoon during one day. The relationship between the illuminances and irradiances measured with the portable instruments and the static measurements was statistically analyzed. Results from the analyses revealed that more than one third of the static measurements of vertical illuminances recorded were below 200 lx, and only 7% of the measurements exceeded 1000 lx. Measurements of the spectral composition of the light radiation in the rooms suggested that the light, although at a fairly low intensity, included relatively much radiation that can have a non-image forming effect. Furthermore, only a small number of significant correlations between the ambulatory and static measurements were found. Results from the t-tests showed that there were no differences between ambulatory measurements, and static measurements of horizontal illuminance at the normal position, average illuminance in the room and vertical illuminance at the position of the eye during three, five, and seven of the 10 measurements, respectively. There is a need to define appropriate parameters in order to describe the quality of a lit environment with respect to the non-image-forming effects of light radiation.
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| 10. |
- Bosch-Sijtsema, Petra, 1971, et al.
(författare)
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Barriers and facilitators for BIM use among Swedish medium-sized contractors - “We wait until someone tells us to use it”
- 2017
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Ingår i: Visualization in Engineering. - : Springer Science and Business Media LLC. - 2213-7459. ; 5:3
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Tidskriftsartikel (refereegranskat)abstract
- Background: The pace of diffusion of BIM (Building Information Modelling) use is considered to increase with governmental initiatives in which public clients in countries like Finland, Singapore, United Kingdom, and Sweden begin requiring BIM as a part of the project delivery. Currently, larger contractor firms use BIM to a certain extent. However, BIM use by mid-sized contractor firms (that is, firms with 50–500 employees that can successfully compete with larger contractors on projects costing a maximum of 50 million Euros) is relatively unknown. Hence, the aim of the paper is to explore current use and perceived constraints and driving forces of BIM-implementation with respect to mid-sized contractors. Methods: A mixed method approach was applied, and data was collected through an interview study and a survey involving chief executive officers or their closest sub-ordinates in mid-sized contractor firms in Sweden. The survey was based on a technology-, organization-, and environment framework that is used in information systems research to study the use of interorganizational information systems. The total population of firms in the survey corresponded to 104. The study presented the preliminary results based on 32 answers (with a 31% response rate). Results: Fifty-eight percent of the surveyed respondents stated that they had been involved in a project in which BIM was used in some manner. The most commonly used application included visualization, which also facilitates coordination and communication. The biggest perceived constraints involved partners that did not use BIM, lack of demand from clients, and the absence of internal demand in the company. With respect to the two last obstacles, significant differences existed between users and non-users. The most common perceived driving forces included the fact that BIM is perceived as a means to follow technical development and that BIM provides competitive advantages to the company. Conclusions: It is concluded that the main driver responsible for BIM-implementation is mainly determined by an individual’s subjective positive or negative evaluation of BIM, instead of external pressure from clients and partners or by the internal capacity and knowledge to use BIM.
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