Pub Date : 2022-01-01DOI: 10.3992/1943-4618.17.1.21
Adam Kriegl, Kyle Blaquiere, D. Svecova
Traditional approaches to the strengthening of dimensional wood roof joist systems are often intrusive and require a substantial amount of additional labour to remove ceilings or roof sections. In an effort to design a less intrusive system for reinforcing over-stressed dimensional wood joists, a roof joist strengthening system was designed consisting of a tension steel plate installed along the bottom of the existing joists with bolted side plate connections. An experimental program was conducted at the University of Manitoba to assess the viability of the reinforcement design. A total of 15 joists were tested to failure under four-point bending conditions, consisting of 5 unreinforced control joists, 5 joists with steel reinforcement, and another 5 reinforced joists with an artificial defect introduced at mid-span along the tension side. The purpose of introducing an artificial defect at mid-span was to simulate the failure modes observed at R.W. Bobby Bend School in Stonewall, Manitoba, where certain roof joists contained knots, splits or cracks along the bottom of the joist within the mid-span region. Service loads based on the applied snow and dead loads applied to these joists were calculated using the National Building Code of Canada [1] and were approximated in the experiment as 8.5 kN. The results indicated that the steel reinforcement produced a 46.8% increase in average load-carrying capacity compared to control joists, and a 33.1% increase in capacity for reinforced joists with artificial defects. The average deflection at service loads was 19.5% lesser than the deflection of the control joists, and the apparent stiffness was determined to increase by 50.0%. The results from this research support the conclusion that the steel reinforcement system for dimensional wood joists is a viable alternative to traditional systems that effectively increases the load-carrying capacity, stiffness, and ductility of the structure.
传统的方法来加强尺寸木屋顶托梁系统往往是侵入性的，需要大量的额外劳动力来拆除天花板或屋顶部分。为了设计一种较少侵入性的系统来加强过大应力尺寸的木托梁，设计了一个屋顶托梁加强系统，该系统由沿现有托梁底部安装的张力钢板和螺栓连接的侧板组成。马尼托巴大学进行了一项实验计划，以评估加固设计的可行性。共有15根托梁在四点弯曲条件下失效，包括5根未加筋的控制托梁，5根加筋的托梁，另外5根加筋的托梁沿受拉侧在跨中引入了人工缺陷。在跨中引入人工缺陷的目的是模拟在马尼托巴石墙的R.W. Bobby Bend学校观察到的破坏模式，在那里，某些屋顶托梁在跨中区域沿托梁底部包含结、裂或裂缝。使用荷载基于施加在这些托梁上的雪和自重荷载，使用加拿大国家建筑规范[1]计算，在实验中近似为8.5 kN。结果表明:加筋后的梁的平均承载能力比对照梁提高46.8%，加筋后的梁的承载力比对照梁提高33.1%;工作荷载下的平均挠度比控制梁的挠度小19.5%，表观刚度增加50.0%。本研究的结果支持这样的结论，即尺寸木托梁的钢筋系统是传统系统的可行替代方案，有效地增加了结构的承载能力、刚度和延性。
{"title":"FLEXURAL STRENGTHENING OF DIMENSIONAL WOOD JOISTS WITH STEEL REINFORCEMENT","authors":"Adam Kriegl, Kyle Blaquiere, D. Svecova","doi":"10.3992/1943-4618.17.1.21","DOIUrl":"https://doi.org/10.3992/1943-4618.17.1.21","url":null,"abstract":"\u0000 Traditional approaches to the strengthening of dimensional wood roof joist systems are often intrusive and require a substantial amount of additional labour to remove ceilings or roof sections. In an effort to design a less intrusive system for reinforcing over-stressed dimensional wood joists, a roof joist strengthening system was designed consisting of a tension steel plate installed along the bottom of the existing joists with bolted side plate connections. An experimental program was conducted at the University of Manitoba to assess the viability of the reinforcement design. A total of 15 joists were tested to failure under four-point bending conditions, consisting of 5 unreinforced control joists, 5 joists with steel reinforcement, and another 5 reinforced joists with an artificial defect introduced at mid-span along the tension side. The purpose of introducing an artificial defect at mid-span was to simulate the failure modes observed at R.W. Bobby Bend School in Stonewall, Manitoba, where certain roof joists contained knots, splits or cracks along the bottom of the joist within the mid-span region. Service loads based on the applied snow and dead loads applied to these joists were calculated using the National Building Code of Canada [1] and were approximated in the experiment as 8.5 kN. The results indicated that the steel reinforcement produced a 46.8% increase in average load-carrying capacity compared to control joists, and a 33.1% increase in capacity for reinforced joists with artificial defects. The average deflection at service loads was 19.5% lesser than the deflection of the control joists, and the apparent stiffness was determined to increase by 50.0%. The results from this research support the conclusion that the steel reinforcement system for dimensional wood joists is a viable alternative to traditional systems that effectively increases the load-carrying capacity, stiffness, and ductility of the structure.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"145 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72413346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3992/1943-4618.17.1.249
Rubaya Rahat, Piyush Pradhananga, Mohamed ElZomor
With the increasing demands for resilient developments, Architecture/Engineering/ Construction (AEC) education shall be at the forefront of preparing future workforces with advanced knowledge about sustainable and resilient designs. Safe-to-Fail is a resilient urban design concept that anticipates failures during infrastructure systems planning, thus reducing the impact of natural disasters. This study aims to: (1) identify the factors influencing AEC students’ perceptions towards learning Safe-to-Fail; and (2) investigate students’ pedagogical preferences to incorporate Safe-to-Fail concepts in AEC curricula. To achieve this, the study implemented an intervention module including a comprehensive Safe-to-Fail lecture followed by an interactive discussion session and a survey to capture students’ experiences, expectations, and perceptions. The findings indicated that AEC students preferred to learn the Safe-to-Fail concept as a portion of an elective course and that the choice of learning such emerging concepts is significantly correlated to the student’s age, duration spent in the program, and prior knowledge of Safe-to-Fail. This study advocates incorporating Safe-to-Fail in AEC curricula, which provides an edge for future careers and contributes to developing resilient built environments.
{"title":"INCORPORATING A DISASTER-RESILIENT AND SUSTAINABLE INFRASTRUCTURE DESIGN CONCEPT, SAFE-TO-FAIL, INTO CURRICULA","authors":"Rubaya Rahat, Piyush Pradhananga, Mohamed ElZomor","doi":"10.3992/1943-4618.17.1.249","DOIUrl":"https://doi.org/10.3992/1943-4618.17.1.249","url":null,"abstract":"\u0000 With the increasing demands for resilient developments, Architecture/Engineering/ Construction (AEC) education shall be at the forefront of preparing future workforces with advanced knowledge about sustainable and resilient designs. Safe-to-Fail is a resilient urban design concept that anticipates failures during infrastructure systems planning, thus reducing the impact of natural disasters. This study aims to: (1) identify the factors influencing AEC students’ perceptions towards learning Safe-to-Fail; and (2) investigate students’ pedagogical preferences to incorporate Safe-to-Fail concepts in AEC curricula. To achieve this, the study implemented an intervention module including a comprehensive Safe-to-Fail lecture followed by an interactive discussion session and a survey to capture students’ experiences, expectations, and perceptions. The findings indicated that AEC students preferred to learn the Safe-to-Fail concept as a portion of an elective course and that the choice of learning such emerging concepts is significantly correlated to the student’s age, duration spent in the program, and prior knowledge of Safe-to-Fail. This study advocates incorporating Safe-to-Fail in AEC curricula, which provides an edge for future careers and contributes to developing resilient built environments.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"6 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85894178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3992/1943-4618.17.1.127
P. Penfield, R. Germain, William B. Smith, S. Stehman
Cross Laminated Timber (CLT) is an engineered wood product for the construction industry offering multiple structural, environmental and supply chain benefits. CLT can be used for an entire building, as both the lateral and vertical load resisting system, or for select elements such as the roof, floors or walls. CLT products were developed in the early 1990’s and have been widely adopted throughout Europe, and more recently, in Canada. However, use of CLT products is still relatively rare in the US. We present the results of a nationwide phone survey in the US conducted with architects and structural engineers to gauge their awareness, rate of adoption and assimilation of CLT products. Although adoption of CLT amongst architects and structural engineers is still at a nascent level within the construction sector, awareness is high, with 100% of our sample respondents cognizant of CLT. Architects and structural engineers perceive relative advantages of using CLT as well as compatibility with traditional construction. However, the adoption process is impeded by issues associated with complexity, trialability and observability. Key barriers to adoption of CLT as perceived by these two stakeholders are lack of experience from construction stakeholders, lack of training and tools for construction management stakeholders, lack of client requests and CLT inventory.
{"title":"ASSESSING THE ADOPTION OF CROSS LAMINATED TIMBER BY ARCHITECTS AND STRUCTURAL ENGINEERS WITHIN THE UNITED STATES","authors":"P. Penfield, R. Germain, William B. Smith, S. Stehman","doi":"10.3992/1943-4618.17.1.127","DOIUrl":"https://doi.org/10.3992/1943-4618.17.1.127","url":null,"abstract":"\u0000 Cross Laminated Timber (CLT) is an engineered wood product for the construction industry offering multiple structural, environmental and supply chain benefits. CLT can be used for an entire building, as both the lateral and vertical load resisting system, or for select elements such as the roof, floors or walls. CLT products were developed in the early 1990’s and have been widely adopted throughout Europe, and more recently, in Canada. However, use of CLT products is still relatively rare in the US. We present the results of a nationwide phone survey in the US conducted with architects and structural engineers to gauge their awareness, rate of adoption and assimilation of CLT products. Although adoption of CLT amongst architects and structural engineers is still at a nascent level within the construction sector, awareness is high, with 100% of our sample respondents cognizant of CLT. Architects and structural engineers perceive relative advantages of using CLT as well as compatibility with traditional construction. However, the adoption process is impeded by issues associated with complexity, trialability and observability. Key barriers to adoption of CLT as perceived by these two stakeholders are lack of experience from construction stakeholders, lack of training and tools for construction management stakeholders, lack of client requests and CLT inventory.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"5 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73582202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3992/1943-4618.17.1.37
A. Ghazvinian, Benay Gursoy
Mycelium-based composites (MBC) are biomaterials presenting renewable and bio-degradable alternatives for a wide range of design and manufacturing processes, including the building industry. MBC result from the incomplete growth of mycelium, fibrous root systems of fungi. They can turn urban and agricultural waste into high-end products. Existing research shows that MBC can reduce fossil fuels’ reliance and embodied energy and decrease building waste. Architects recently designed and built a wide range of experimental projects with MBC. In parallel, there is a growing body of work on MBC by scholars from different disciplines, such as mycology, material science, and mechanical engineering, focusing on assessing and enhancing the material properties of MBC for various applications. In this paper, we first provide essential knowledge on the cultivation of MBC for architectural applications. Next, we analyze some of the prominent architectural prototypes with MBC to exemplify the architectural potentials of MBC and uncover the constraints and affordances of this biomaterial when used in an architectural context. Finally, we review and synthesize the existing literature on MBC from different disciplines providing a guide for architects to cultivate and enhance the material properties of MBC for architectural goals.
{"title":"BASICS OF BUILDING WITH MYCELIUM-BASED BIO-COMPOSITES","authors":"A. Ghazvinian, Benay Gursoy","doi":"10.3992/1943-4618.17.1.37","DOIUrl":"https://doi.org/10.3992/1943-4618.17.1.37","url":null,"abstract":"\u0000 Mycelium-based composites (MBC) are biomaterials presenting renewable and bio-degradable alternatives for a wide range of design and manufacturing processes, including the building industry. MBC result from the incomplete growth of mycelium, fibrous root systems of fungi. They can turn urban and agricultural waste into high-end products. Existing research shows that MBC can reduce fossil fuels’ reliance and embodied energy and decrease building waste. Architects recently designed and built a wide range of experimental projects with MBC. In parallel, there is a growing body of work on MBC by scholars from different disciplines, such as mycology, material science, and mechanical engineering, focusing on assessing and enhancing the material properties of MBC for various applications.\u0000 In this paper, we first provide essential knowledge on the cultivation of MBC for architectural applications. Next, we analyze some of the prominent architectural prototypes with MBC to exemplify the architectural potentials of MBC and uncover the constraints and affordances of this biomaterial when used in an architectural context. Finally, we review and synthesize the existing literature on MBC from different disciplines providing a guide for architects to cultivate and enhance the material properties of MBC for architectural goals.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"2 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87147727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3992/1943-4618.17.1.3
W. Xing, Jianli Hao, Wenting Ma, G. Gong, A. Nizami, Yu Song
The electrochromic (EC) smart window is a promising intelligent technology for improving the energy performance of a building. When applying a new glazing material, the window-wall ratio (WWR) is regarded as a significant factor related to daylight and building energy losses. However, there have not been any studies examining the relationship between the efficiency of the EC smart window and the WWR. The aim of this study is to provide strategies for mitigating energy losses and environmental impacts from window elements in an office building. It focuses on optimizing the WWR of EC smart windows to increase building energy efficiency. Double EC, low-emissivity (low-E), and clear glazing materials are simulated combined with five WWRs from 0% to 80% with an interval of 20%, four window orientations, and humid subtropical and Mediterranean climates. The results show that a 40% WWR in a southern-facing building façade using a humid subtropical climate setting provides the optimum energy performance of EC glazing among all the configurations tested. Since it was also found that EC glazing reduces the cooling load, it is more suitable for climate conditions characterized by a hotter temperature with greater solar irradiation. Future research should consider the impact of WWR when balancing thermal, lighting and ventilation requirements, and the properties of EC glazing.
{"title":"ENERGY PERFORMANCE OF BUILDINGS USING ELECTROCHROMIC SMART WINDOWS WITH DIFFERENT WINDOW-WALL RATIOS","authors":"W. Xing, Jianli Hao, Wenting Ma, G. Gong, A. Nizami, Yu Song","doi":"10.3992/1943-4618.17.1.3","DOIUrl":"https://doi.org/10.3992/1943-4618.17.1.3","url":null,"abstract":"\u0000 The electrochromic (EC) smart window is a promising intelligent technology for improving the energy performance of a building. When applying a new glazing material, the window-wall ratio (WWR) is regarded as a significant factor related to daylight and building energy losses. However, there have not been any studies examining the relationship between the efficiency of the EC smart window and the WWR. The aim of this study is to provide strategies for mitigating energy losses and environmental impacts from window elements in an office building. It focuses on optimizing the WWR of EC smart windows to increase building energy efficiency. Double EC, low-emissivity (low-E), and clear glazing materials are simulated combined with five WWRs from 0% to 80% with an interval of 20%, four window orientations, and humid subtropical and Mediterranean climates. The results show that a 40% WWR in a southern-facing building façade using a humid subtropical climate setting provides the optimum energy performance of EC glazing among all the configurations tested. Since it was also found that EC glazing reduces the cooling load, it is more suitable for climate conditions characterized by a hotter temperature with greater solar irradiation. Future research should consider the impact of WWR when balancing thermal, lighting and ventilation requirements, and the properties of EC glazing.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"13 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82392952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3992/1943-4618.17.1.105
Jaewook Lee, M. Boubekri
This study investigates the applicability of a new daylighting metric based on human health, an emerging framework for evaluating the effect of daylight on building occupants. Procedures based on modeling annual daylight availability are used to determine the mapping of daylight distribution on a daily, seasonal, and yearly basis. Literature review and experimental studies were performed to propose the new day-lighting metrics for health and wellbeing. The proposed metrics have two broad criteria, including daylighting level, timing, and duration. The two details are as follows: (1) 400 lux for 5 hours (2K lux·h) in the daytime; and (2) 500 lux for 1 hour (0.5K lux·h) in the early morning, 8AM–9AM. To verify the applicability of the proposed daylighting metrics to current buildings, sample buildings were selected and daily, spatial and seasonal differences were simulated through computer visualization techniques. Moreover, we evaluated the application of the daylighting metric on the building layout and compared the new daylighting metric for health and wellbeing with conventional daylighting metrics.
{"title":"INTRODUCTION OF NEW DAYLIGHTING METRICS FOR HEALTH, WELLBEING, AND FEASIBILITY: A STUDY OF THE INDOOR BUILDING ENVIRONMENT","authors":"Jaewook Lee, M. Boubekri","doi":"10.3992/1943-4618.17.1.105","DOIUrl":"https://doi.org/10.3992/1943-4618.17.1.105","url":null,"abstract":"\u0000 This study investigates the applicability of a new daylighting metric based on human health, an emerging framework for evaluating the effect of daylight on building occupants. Procedures based on modeling annual daylight availability are used to determine the mapping of daylight distribution on a daily, seasonal, and yearly basis. Literature review and experimental studies were performed to propose the new day-lighting metrics for health and wellbeing. The proposed metrics have two broad criteria, including daylighting level, timing, and duration. The two details are as follows: (1) 400 lux for 5 hours (2K lux·h) in the daytime; and (2) 500 lux for 1 hour (0.5K lux·h) in the early morning, 8AM–9AM. To verify the applicability of the proposed daylighting metrics to current buildings, sample buildings were selected and daily, spatial and seasonal differences were simulated through computer visualization techniques. Moreover, we evaluated the application of the daylighting metric on the building layout and compared the new daylighting metric for health and wellbeing with conventional daylighting metrics.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"5 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90553869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3992/1943-4618.17.1.169
Lingling Tian, Lilin Xiong, Hui Liu, Pengjuan Mao, Hongyang Li, Z. Dai
People’s lifestyle and energy use behavior have been shown to influence the energy consumption of buildings. Since university dormitories consume a significant amount of energy, it is important to investigate the energy use behavior of students in such dormitories. The aim of this study was therefore to improve students’ energy use behavior in order to reduce the energy consumption of air conditioning in university dormitories. Based on a review of relevant literature, air conditioning energy use behavior was defined, and influencing factors were identified from demographic characteristics, indoor characteristics of personnel, as well as physiological and psychological factors. Students’ air conditioning energy use behavior during the summer and influencing factors of students’ energy use behavior was then revealed by an analysis of 332 respondents to a questionnaire survey. The results indicated that differences in energy use behavior are influenced by: age, major and monthly living expense of students; indoor characteristics such as the number of students in the dormitory, time spent in the dormitory, distance to an air conditioning unit; physiological factors including body comfort, clothing, and activity intensity; and psychological factors including cognition degree, values, living habits, attitude, perceived behavior control, and subjective norms. Based on these findings, suggestions for reducing energy consumed by air conditioning were proposed and intervention studies then conducted to confirm that energy use behavior had improved, with subsequent consumption savings after the intervention. This study adds to the body of knowledge in the field of energy use behavior and provides guidance for the sustainable development of green universities.
{"title":"AN EMPIRICAL STUDY OF STUDENTS’ AIR CONDITIONING ENERGY USE BEHAVIOR IN UNIVERSITY DORMITORIES—A CASE OF NANJING, CHINA","authors":"Lingling Tian, Lilin Xiong, Hui Liu, Pengjuan Mao, Hongyang Li, Z. Dai","doi":"10.3992/1943-4618.17.1.169","DOIUrl":"https://doi.org/10.3992/1943-4618.17.1.169","url":null,"abstract":"People’s lifestyle and energy use behavior have been shown to influence the energy consumption of buildings. Since university dormitories consume a significant amount of energy, it is important to investigate the energy use behavior of students in such dormitories. The aim of this study was therefore to improve students’ energy use behavior in order to reduce the energy consumption of air conditioning in university dormitories. Based on a review of relevant literature, air conditioning energy use behavior was defined, and influencing factors were identified from demographic characteristics, indoor characteristics of personnel, as well as physiological and psychological factors. Students’ air conditioning energy use behavior during the summer and influencing factors of students’ energy use behavior was then revealed by an analysis of 332 respondents to a questionnaire survey. The results indicated that differences in energy use behavior are influenced by: age, major and monthly living expense of students; indoor characteristics such as the number of students in the dormitory, time spent in the dormitory, distance to an air conditioning unit; physiological factors including body comfort, clothing, and activity intensity; and psychological factors including cognition degree, values, living habits, attitude, perceived behavior control, and subjective norms. Based on these findings, suggestions for reducing energy consumed by air conditioning were proposed and intervention studies then conducted to confirm that energy use behavior had improved, with subsequent consumption savings after the intervention. This study adds to the body of knowledge in the field of energy use behavior and provides guidance for the sustainable development of green universities.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"121 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84902397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3992/1943-4618.17.1.199
F. Yılmaz
Office environments can be integrated with particular workspace configurations owing to diverse tasks encountered in these workspaces. This study attempts to discern how effective different office workstation configurations are on daylight performance and tries to quantify this effect by means of a dynamic daylight simulation based approach, depending on the criteria addressed in EN 17037:2018 Standard. The purpose of this study is to explore the impact of workstation configurations on daylight provision and glare protection in workspaces through several configuration setups. In this study, climate based daylight metrics are used for daylight performance determination and assessment of discomfort glare caused by daylighting is performed by Daylight Glare Probability (DGP) index. This study aims to contribute to the growing body of research in the scope of EN 17037:2018 for daylighting in office environments and the obtained results represent the significance of daylighting and visual comfort conditions for diverse workstation configurations.
{"title":"EVALUATION OF DAYLIGHT PROVISION AND DAYLIGHT GLARE PROBABILITY FOR DIVERSE WORKSPACE CONFIGURATIONS","authors":"F. Yılmaz","doi":"10.3992/1943-4618.17.1.199","DOIUrl":"https://doi.org/10.3992/1943-4618.17.1.199","url":null,"abstract":"\u0000 Office environments can be integrated with particular workspace configurations owing to diverse tasks encountered in these workspaces. This study attempts to discern how effective different office workstation configurations are on daylight performance and tries to quantify this effect by means of a dynamic daylight simulation based approach, depending on the criteria addressed in EN 17037:2018 Standard. The purpose of this study is to explore the impact of workstation configurations on daylight provision and glare protection in workspaces through several configuration setups. In this study, climate based daylight metrics are used for daylight performance determination and assessment of discomfort glare caused by daylighting is performed by Daylight Glare Probability (DGP) index. This study aims to contribute to the growing body of research in the scope of EN 17037:2018 for daylighting in office environments and the obtained results represent the significance of daylighting and visual comfort conditions for diverse workstation configurations.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"13 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73948898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Prefabricated construction (PC) has been regarded as a critical approach to address the challenges confronted by the construction industry in achieving sustainable development. Despite the Chinese government having issued various policies to promote the development of PC, this field remains in its infancy, thus suggesting an unsatisfactory policy system. Few studies have been conducted on the policy evaluation of target stakeholders who are closely related to the policy goal. To fill this knowledge gap, this study innovatively adopts importance-performance analysis to evaluate the policies on PC development with reference to the policy framework, including environmental, demand, and supply instruments. First, the explicit importance and perceived performance levels of policy instruments were investigated through a questionnaire survey conducted in Chongqing, China. Gap analysis indicated that all these policy instruments failed to meet the demand of target stakeholders. The implicit importance of policy instruments was obtained by using partial correlation analysis. Grid analysis revealed that the policy instruments can be divided into basic, key, excitement, and secondary factors, and finally, the most crucial areas of policy improvement were determined. The results of this study indicate different policy instruments were perceived with different importance in improving the policy system of PC development, and stakeholders showed heterogeneous needs of policy instruments of PC development. Generally, all the policy instruments were perceived as negative, and more attention should be paid to the policy instruments of infrastructure construction, technical development, talent support, economic incentives, public services, and guide information. This study confirmed the applicability of importance-performance analysis in policy evaluation and provided new insights into effectively improving the efficacy of policy system in promoting the development of PC.
{"title":"EVALUATION OF POLICIES ON THE DEVELOPMENT OF PREFABRICATED CONSTRUCTION IN CHINA: AN IMPORTANCE-PERFORMANCE ANALYSIS","authors":"Xiaolong Gan, Lanchi Liu, Tao Wen","doi":"10.3992/jgb.17.1.147","DOIUrl":"https://doi.org/10.3992/jgb.17.1.147","url":null,"abstract":"\u0000 Prefabricated construction (PC) has been regarded as a critical approach to address the challenges confronted by the construction industry in achieving sustainable development. Despite the Chinese government having issued various policies to promote the development of PC, this field remains in its infancy, thus suggesting an unsatisfactory policy system. Few studies have been conducted on the policy evaluation of target stakeholders who are closely related to the policy goal. To fill this knowledge gap, this study innovatively adopts importance-performance analysis to evaluate the policies on PC development with reference to the policy framework, including environmental, demand, and supply instruments. First, the explicit importance and perceived performance levels of policy instruments were investigated through a questionnaire survey conducted in Chongqing, China. Gap analysis indicated that all these policy instruments failed to meet the demand of target stakeholders. The implicit importance of policy instruments was obtained by using partial correlation analysis. Grid analysis revealed that the policy instruments can be divided into basic, key, excitement, and secondary factors, and finally, the most crucial areas of policy improvement were determined. The results of this study indicate different policy instruments were perceived with different importance in improving the policy system of PC development, and stakeholders showed heterogeneous needs of policy instruments of PC development. Generally, all the policy instruments were perceived as negative, and more attention should be paid to the policy instruments of infrastructure construction, technical development, talent support, economic incentives, public services, and guide information. This study confirmed the applicability of importance-performance analysis in policy evaluation and provided new insights into effectively improving the efficacy of policy system in promoting the development of PC.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"7 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83204138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.3992/1943-4618.17.1.71
Fadi Salah, Merve Tuna Kayili
This research investigates the potential of kinetic façade reinforcement strategy to reduce the energy consumption of existing buildings in a cold-dominated zone by lowering the cooling load with a mobile solar control system and effective solar control. In this context, a kinetic façade system was proposed for a public building with high transparency in Karabük, Turkey, and the fixed shading elements of the existing building were compared with solar heat gain. For the kinetic façade scenario, the study workflow was developed by a visual programming environment in a Building Information Modeling (BIM) application. The flexible movement of individual kinetic panels was determined by the kinetic panel opening factor and sun path. To determine the effect of typological differences on solar control in the kinetic facade system, horizontal kinetic folded panels and vertical kinetic folded panels were investigated. As a result, a reduction of up to 11.52% was found in solar heat gain during the highest solar radiation intensity days for the existing public building.
{"title":"RESPONSIVE KINETIC FAÇADE STRATEGY AND DETERMINATION OF THE EFFECT ON SOLAR HEAT GAIN USING PARAMETRIC BIM-BASED ENERGY SIMULATION","authors":"Fadi Salah, Merve Tuna Kayili","doi":"10.3992/1943-4618.17.1.71","DOIUrl":"https://doi.org/10.3992/1943-4618.17.1.71","url":null,"abstract":"\u0000 This research investigates the potential of kinetic façade reinforcement strategy to reduce the energy consumption of existing buildings in a cold-dominated zone by lowering the cooling load with a mobile solar control system and effective solar control. In this context, a kinetic façade system was proposed for a public building with high transparency in Karabük, Turkey, and the fixed shading elements of the existing building were compared with solar heat gain. For the kinetic façade scenario, the study workflow was developed by a visual programming environment in a Building Information Modeling (BIM) application. The flexible movement of individual kinetic panels was determined by the kinetic panel opening factor and sun path. To determine the effect of typological differences on solar control in the kinetic facade system, horizontal kinetic folded panels and vertical kinetic folded panels were investigated. As a result, a reduction of up to 11.52% was found in solar heat gain during the highest solar radiation intensity days for the existing public building.","PeriodicalId":51753,"journal":{"name":"Journal of Green Building","volume":"12 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75931922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：