Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.786
Pardeep Kumar, A. Sharma
Outdoor thermal comfort (OTC) promotes the usage frequency of public places, recreational activities, and people's wellbeing. Despite the increased interest in OTC research in the past decade, less attention has been paid to OTC research in cold weather, especially in arid regions. The present study investigates the OTC conditions in open spaces at the campus area in the arid region. The study was conducted by using subjective surveys(questionnaire) and onsite monitoring (microclimate parameters). The study was conducted at the Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana-India campus during the cold season of 2019. The timings of surveys were between 9:00 and 17:00 hours. The authors processed the 185 valid questionnaire responses of the respondents to analyze OTC conditions. Only 8.6% of the respondents marked their perceived sensation "Neutral." Regression analysis was applied between respondents' thermal sensations and microclimate parameters to develop the empirical thermal sensation model. The air temperature was the most dominant parameter affecting the sensations of the respondents. The empirical model indicated that by increasing air temperature, relative humidity, and solar radiation, the thermal sensations also increased while wind speed had an opposite effect. Physiological equivalent temperature (PET) was applied for assessing the OTC conditions; the neutral PET range was found to be 18.42-25.37°C with a neutral temperature of 21.89°C. The preferred temperature was 21.99 °C by applying Probit analysis. The study's findings could provide valuable information in designing and planning outdoor spaces for educational institutions in India's arid regions
{"title":"Assessing The Thermal Comfort Conditions In Open Spaces: A Transversal Field Survey On The University Campus In India","authors":"Pardeep Kumar, A. Sharma","doi":"10.11113/ijbes.v8.n3.786","DOIUrl":"https://doi.org/10.11113/ijbes.v8.n3.786","url":null,"abstract":"Outdoor thermal comfort (OTC) promotes the usage frequency of public places, recreational activities, and people's wellbeing. Despite the increased interest in OTC research in the past decade, less attention has been paid to OTC research in cold weather, especially in arid regions. The present study investigates the OTC conditions in open spaces at the campus area in the arid region. The study was conducted by using subjective surveys(questionnaire) and onsite monitoring (microclimate parameters). The study was conducted at the Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana-India campus during the cold season of 2019. The timings of surveys were between 9:00 and 17:00 hours. The authors processed the 185 valid questionnaire responses of the respondents to analyze OTC conditions. Only 8.6% of the respondents marked their perceived sensation \"Neutral.\" Regression analysis was applied between respondents' thermal sensations and microclimate parameters to develop the empirical thermal sensation model. The air temperature was the most dominant parameter affecting the sensations of the respondents. The empirical model indicated that by increasing air temperature, relative humidity, and solar radiation, the thermal sensations also increased while wind speed had an opposite effect. Physiological equivalent temperature (PET) was applied for assessing the OTC conditions; the neutral PET range was found to be 18.42-25.37°C with a neutral temperature of 21.89°C. The preferred temperature was 21.99 °C by applying Probit analysis. The study's findings could provide valuable information in designing and planning outdoor spaces for educational institutions in India's arid regions","PeriodicalId":43031,"journal":{"name":"International Journal of Built Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63538229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.822
Freddy Marihot Rotua Nainggolan, T. Subroto, Agam Marsoyo
Providing housing for refugees due to disasters is a common problem in countries prone to natural disasters. The eruption of Mount Merapi in Yogyakarta in 2010 has displaced the people of Kepuharjo Village to a new settlement in Pagerjurang permanent shelter. However, the process of settling in a new settlement requires adjustments because the people of Kepuharjo Village have been living on the slopes of Mount Merapi for generations. This research is a qualitative research which aims to find a reflection of the space-occupancy value system that occurs in the village of Kepuharjo at the Pagerjurang permanent shelter. The results of observations and interviews with 29 units show that the description of the activities and arrangement of the residential space in the Pagerjurang permanent shelter. The results showed that the motivation for the development of residential spaces is closely related to kinship and socio-cultural values in the daily life of the occupants. The socio-cultural reflection on the residential space of the Kepuharjo community in the Pagerjurang permanent shelter is in line with the social principles of mutual-cooperation (gotong-royong). Gotong-royong is expressed in the strengthening of space, expansion of space, and agreement of space.
{"title":"The Value of Gotong-royong in the Mountainous Settlement of Kepuharjo Village at Pagerjurang Permanent Shelter in Yogyakarta, Indonesia","authors":"Freddy Marihot Rotua Nainggolan, T. Subroto, Agam Marsoyo","doi":"10.11113/ijbes.v8.n3.822","DOIUrl":"https://doi.org/10.11113/ijbes.v8.n3.822","url":null,"abstract":"Providing housing for refugees due to disasters is a common problem in countries prone to natural disasters. The eruption of Mount Merapi in Yogyakarta in 2010 has displaced the people of Kepuharjo Village to a new settlement in Pagerjurang permanent shelter. However, the process of settling in a new settlement requires adjustments because the people of Kepuharjo Village have been living on the slopes of Mount Merapi for generations. This research is a qualitative research which aims to find a reflection of the space-occupancy value system that occurs in the village of Kepuharjo at the Pagerjurang permanent shelter. The results of observations and interviews with 29 units show that the description of the activities and arrangement of the residential space in the Pagerjurang permanent shelter. The results showed that the motivation for the development of residential spaces is closely related to kinship and socio-cultural values in the daily life of the occupants. The socio-cultural reflection on the residential space of the Kepuharjo community in the Pagerjurang permanent shelter is in line with the social principles of mutual-cooperation (gotong-royong). Gotong-royong is expressed in the strengthening of space, expansion of space, and agreement of space.","PeriodicalId":43031,"journal":{"name":"International Journal of Built Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63538238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.704
M. Amer, M. Majid, Tahar Ledraa
Recently, research on sprawl was increasing due to its impacts on the economy, society, and environment. Several studies have focused on the application of containment strategies to curb urban sprawl. Urban growth boundaries (UGBs) were among the containment policies adopted to tackle the issue of sprawling cities. This paper set out to undertake an analysis of the factors influencing the performance of the UGB of Riyadh City. A qualitative data analysis using NVivo12 software was adopted. To collect the required data of UGB, semi-structured interviews were conducted with nine experts involved in urban management, Riyadh city development, and other planning agencies. If the application of UGB policy in the western countries has managed to restrain more or less city sprawl, its replication to the case of Riyadh seems to have had some adverse impacts. That is, instead of controlling urban sprawl, it has stimulated it. The reasons may lie in the deficiency of monitoring and evaluation of urban studies, free provision of infrastructure, and lack of coordination between different city planning agencies. Understanding the factors affecting the UGB efficiencywill assist policymakers and urban planners in reducing the spread of scattered and leapfrog residential development, lowering the cost of service supply and promoting infill development
{"title":"The Riyadh Urban Growth Boundary: An Analysis of the Factors Affecting its Efficiency on Restraining Sprawl","authors":"M. Amer, M. Majid, Tahar Ledraa","doi":"10.11113/ijbes.v8.n3.704","DOIUrl":"https://doi.org/10.11113/ijbes.v8.n3.704","url":null,"abstract":"Recently, research on sprawl was increasing due to its impacts on the economy, society, and environment. Several studies have focused on the application of containment strategies to curb urban sprawl. Urban growth boundaries (UGBs) were among the containment policies adopted to tackle the issue of sprawling cities. This paper set out to undertake an analysis of the factors influencing the performance of the UGB of Riyadh City. A qualitative data analysis using NVivo12 software was adopted. To collect the required data of UGB, semi-structured interviews were conducted with nine experts involved in urban management, Riyadh city development, and other planning agencies. If the application of UGB policy in the western countries has managed to restrain more or less city sprawl, its replication to the case of Riyadh seems to have had some adverse impacts. That is, instead of controlling urban sprawl, it has stimulated it. The reasons may lie in the deficiency of monitoring and evaluation of urban studies, free provision of infrastructure, and lack of coordination between different city planning agencies. Understanding the factors affecting the UGB efficiencywill assist policymakers and urban planners in reducing the spread of scattered and leapfrog residential development, lowering the cost of service supply and promoting infill development","PeriodicalId":43031,"journal":{"name":"International Journal of Built Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63538611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.681
Kelvin Tang Kang Wee, M. Mahmud
Precise and accurate bathymetric measurements are conventionally acquired by means of ship-based acoustic equipment. Nevertheless, recent multispectral satellite imagery has been utilised as a substitute source to map the seabed topography which indicates new revolution in hydrographic surveying. This study assesses the satellite bathymetric depth’s accuracy based on the vertical uncertainty as stated in the Standards for Hydrographic Surveys issued by the International Hydrographic Organization. Two empirical algorithms, namely, Dierssen’s and Stumpf’s approaches have been adopted to model the seafloor topography over the coastal and shallow water at Tanjung Kupang, Malaysia. The outcomes demonstrate a decent correlation between the derived water depths and the sounding values acquired from a ship-based acoustic survey. For instance, a total of 1,215 out of the 1,367 generated water depths by Stumpf’s model have hit the minimum standard of survey in S-44. Similarly, out of the 1,367 samples from Diessen’s model, 1,211 samples have met the minimum requirement listed in the survey standard. The results demonstrate both imageries derived bathymetry models convey promising results which can be ultilised for bathymetric mapping application. Therefore, this imagery derived bathymetry can be considered as an alternative bathymetric surveying technique to supply cost-effective solution and survey data to support the Blue Economy and Sustainable Development Goals 14.
{"title":"The Accuracy of Satellite Derived Bathymetry in Coastal and Shallow Water Zone","authors":"Kelvin Tang Kang Wee, M. Mahmud","doi":"10.11113/ijbes.v8.n3.681","DOIUrl":"https://doi.org/10.11113/ijbes.v8.n3.681","url":null,"abstract":"Precise and accurate bathymetric measurements are conventionally acquired by means of ship-based acoustic equipment. Nevertheless, recent multispectral satellite imagery has been utilised as a substitute source to map the seabed topography which indicates new revolution in hydrographic surveying. This study assesses the satellite bathymetric depth’s accuracy based on the vertical uncertainty as stated in the Standards for Hydrographic Surveys issued by the International Hydrographic Organization. Two empirical algorithms, namely, Dierssen’s and Stumpf’s approaches have been adopted to model the seafloor topography over the coastal and shallow water at Tanjung Kupang, Malaysia. The outcomes demonstrate a decent correlation between the derived water depths and the sounding values acquired from a ship-based acoustic survey. For instance, a total of 1,215 out of the 1,367 generated water depths by Stumpf’s model have hit the minimum standard of survey in S-44. Similarly, out of the 1,367 samples from Diessen’s model, 1,211 samples have met the minimum requirement listed in the survey standard. The results demonstrate both imageries derived bathymetry models convey promising results which can be ultilised for bathymetric mapping application. Therefore, this imagery derived bathymetry can be considered as an alternative bathymetric surveying technique to supply cost-effective solution and survey data to support the Blue Economy and Sustainable Development Goals 14.","PeriodicalId":43031,"journal":{"name":"International Journal of Built Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63538555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.763
Fouad Roula, A. Bouchair
Increased interest in developing sustainable urban areas has become an important feature in recent urban development studies. In fact, the question of neighbourhood sustainability assessment is a major part of this interest. Accordingly, a number of methods and tools for evaluating sustainable development projects in the urban areas have emerged particularly at district level. However, the urban development in Algeria is far from having achieved a clearly defined frame. This work therefore aims to demonstrate the contribution of sustainability assessment to any development project as well as the importance of the district level as a lever for local sustainable development. For this study, the district of the “Beach” formerly known as “Casino” located Jijel city centre, in Algeria, is chosen as a case study. We will focus on the assessment of its current state in relation to the principles and objectives of sustainable development, through a shared diagnosis of the Heritage, environmental Quality, Diversity, Integration, social Link (HQDIL) method and the INDicators Impact (INDI) model of the High Environmental Quality (HQE2R) approach. Along the same lines, a comparison between its initial state and the proposed development project by the land use plan study was made. The results obtained enabled us to draw up a detailed representation of each indicator on a sustainability scale. This led to deduce the degree of sustainability of the “Beach” district, thus to define the weak points, the strong points and to lead to a reflection on the issues and the action plan to be taken into account during a sustainable intervention on the latter. This work provides an aid to decision-making for researchers and urban actors, in order to orient urban development or renewal projects towards sustainability
{"title":"Application of the INDI Model of the HQE²R Approach to Assess the Sustainability of a Neighbourhood: Case of Jijel City in Algeria","authors":"Fouad Roula, A. Bouchair","doi":"10.11113/ijbes.v8.n3.763","DOIUrl":"https://doi.org/10.11113/ijbes.v8.n3.763","url":null,"abstract":"Increased interest in developing sustainable urban areas has become an important feature in recent urban development studies. In fact, the question of neighbourhood sustainability assessment is a major part of this interest. Accordingly, a number of methods and tools for evaluating sustainable development projects in the urban areas have emerged particularly at district level. However, the urban development in Algeria is far from having achieved a clearly defined frame. This work therefore aims to demonstrate the contribution of sustainability assessment to any development project as well as the importance of the district level as a lever for local sustainable development. For this study, the district of the “Beach” formerly known as “Casino” located Jijel city centre, in Algeria, is chosen as a case study. We will focus on the assessment of its current state in relation to the principles and objectives of sustainable development, through a shared diagnosis of the Heritage, environmental Quality, Diversity, Integration, social Link (HQDIL) method and the INDicators Impact (INDI) model of the High Environmental Quality (HQE2R) approach. Along the same lines, a comparison between its initial state and the proposed development project by the land use plan study was made. The results obtained enabled us to draw up a detailed representation of each indicator on a sustainability scale. This led to deduce the degree of sustainability of the “Beach” district, thus to define the weak points, the strong points and to lead to a reflection on the issues and the action plan to be taken into account during a sustainable intervention on the latter. This work provides an aid to decision-making for researchers and urban actors, in order to orient urban development or renewal projects towards sustainability","PeriodicalId":43031,"journal":{"name":"International Journal of Built Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63538667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.684
Isa Muhammad Zumo, M. Hashim, N. Hassan
Above-Ground Grass Biomass (AGGB) mapping and estimation is one of the important parameters for environmental ecosystem and grazing-lands management, particularly for livestock farming. However, previous models for estimation of AGGB with satellite imagery has some difficulty in choosing a particular satellite and vegetation index that can build a good estimation model at a higher accuracy. This study explores the potentiality of Sentinel 2A data to derive a satellite-based model for AGGB mapping and estimation. The study area was Skudai, Johor in Malaysia Peninsular. Grass parameters of forty grass sample units were measured in the field and their corresponding AGGB was later measured in the laboratory. The samples were used for modelling and assessment. Four indices were tested for their fitness in modelling AGGB from the satellite data. The result from the grass allometric analysis indicates that grass height and volume demonstrate good relationship with the measured AGGB (R² = 0.852 and 0.837 respectively). Vegetation Index Number (VIN) has the best fit for modeling AGGB (R2 = 0.840) compared to other vegetation indices. The derived satellite AGGB estimate was validated with the assessment field and allometry derived AGGB at RMSE = 15.89g and 44.45g, respectively. This study demonstrate that VIN derived from Sentinel 2A MSI satellite data can be used to model AGGB estimation at a good accuracy. Therefore, it will contribute to providing reliable information on AGGB of grazing lands for sustainable livestock farming.
{"title":"Mapping and Estimation of Above-ground Grass Biomass using Sentinel 2A Satellite Data","authors":"Isa Muhammad Zumo, M. Hashim, N. Hassan","doi":"10.11113/ijbes.v8.n3.684","DOIUrl":"https://doi.org/10.11113/ijbes.v8.n3.684","url":null,"abstract":"Above-Ground Grass Biomass (AGGB) mapping and estimation is one of the important parameters for environmental ecosystem and grazing-lands management, particularly for livestock farming. However, previous models for estimation of AGGB with satellite imagery has some difficulty in choosing a particular satellite and vegetation index that can build a good estimation model at a higher accuracy. This study explores the potentiality of Sentinel 2A data to derive a satellite-based model for AGGB mapping and estimation. The study area was Skudai, Johor in Malaysia Peninsular. Grass parameters of forty grass sample units were measured in the field and their corresponding AGGB was later measured in the laboratory. The samples were used for modelling and assessment. Four indices were tested for their fitness in modelling AGGB from the satellite data. The result from the grass allometric analysis indicates that grass height and volume demonstrate good relationship with the measured AGGB (R² = 0.852 and 0.837 respectively). Vegetation Index Number (VIN) has the best fit for modeling AGGB (R2 = 0.840) compared to other vegetation indices. The derived satellite AGGB estimate was validated with the assessment field and allometry derived AGGB at RMSE = 15.89g and 44.45g, respectively. This study demonstrate that VIN derived from Sentinel 2A MSI satellite data can be used to model AGGB estimation at a good accuracy. Therefore, it will contribute to providing reliable information on AGGB of grazing lands for sustainable livestock farming.","PeriodicalId":43031,"journal":{"name":"International Journal of Built Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63538567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.736
Mozhgan Samzadeh, Nazli Bin Che Din, Zunaibi Abdullah, N. Mahyuddin, Muhammad Azzam Ismail
Rainwater is an alternative water resource to fulfill sustainable management of freshwater particularly in the regions receive abundant annual amounts of precipitation such as tropical Malaysia. To collect and store rainwater, rainwater harvesting system has been practiced since ancient from horizontal surfaces mostly rooftop of buildings in urban areas. Nowadays, this method in modern urban areas with tall buildings is considered inadequate and uneconomical because the ratio of facade surface areas is much higher than the ratio of roof surface areas. On the other hand, all rain has a horizontal velocity due to wind acting upon rain droplets which is called wind-driven rain (WDR). Growing tall buildings and the presence of WDR phenomenon make building façade surfaces the available promising surfaces to harvest substantial rainwater vertically and more efficiently. This article presents a one-year field measurement results that aims at quantifying the WDR loads impinged on the vertical facade areas of a pilot building located at the main campus of the University Malaya in Kuala Lumpur, Malaysia. Detailed descriptions of the gauge design, building, the measurements of on-site WDR, rainfall duration time, and weather data are presented. Records show that monsoon winds characteristics have significant influence on the WDR loads on the building facades compare to horizontal rainfall intensity. Finally, the collected in-situ data are exploited to validate data and determine WDR coefficient (γ) to estimate the amount of WDR on a building façade via an empirical WDR relationship. Results show the feasibility of each square meter of vertical façade area to supply 12% of non-potable or 4.9% of potable water-usage per capita per day.
{"title":"Feasibility of Vertical Rainwater Harvesting via In-situ Measurement of Wind-driven Rain Loads on Building Facades in a Tropical Climate","authors":"Mozhgan Samzadeh, Nazli Bin Che Din, Zunaibi Abdullah, N. Mahyuddin, Muhammad Azzam Ismail","doi":"10.11113/ijbes.v8.n3.736","DOIUrl":"https://doi.org/10.11113/ijbes.v8.n3.736","url":null,"abstract":"Rainwater is an alternative water resource to fulfill sustainable management of freshwater particularly in the regions receive abundant annual amounts of precipitation such as tropical Malaysia. To collect and store rainwater, rainwater harvesting system has been practiced since ancient from horizontal surfaces mostly rooftop of buildings in urban areas. Nowadays, this method in modern urban areas with tall buildings is considered inadequate and uneconomical because the ratio of facade surface areas is much higher than the ratio of roof surface areas. On the other hand, all rain has a horizontal velocity due to wind acting upon rain droplets which is called wind-driven rain (WDR). Growing tall buildings and the presence of WDR phenomenon make building façade surfaces the available promising surfaces to harvest substantial rainwater vertically and more efficiently. This article presents a one-year field measurement results that aims at quantifying the WDR loads impinged on the vertical facade areas of a pilot building located at the main campus of the University Malaya in Kuala Lumpur, Malaysia. Detailed descriptions of the gauge design, building, the measurements of on-site WDR, rainfall duration time, and weather data are presented. Records show that monsoon winds characteristics have significant influence on the WDR loads on the building facades compare to horizontal rainfall intensity. Finally, the collected in-situ data are exploited to validate data and determine WDR coefficient (γ) to estimate the amount of WDR on a building façade via an empirical WDR relationship. Results show the feasibility of each square meter of vertical façade area to supply 12% of non-potable or 4.9% of potable water-usage per capita per day.","PeriodicalId":43031,"journal":{"name":"International Journal of Built Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63538624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.852
D. Schiela, C. Schünemann
Studies have shown that night-time ventilation can greatly reduce indoor overheating during hot spells. Yet the relevant literature is largely silent on which specific time resolved window ventilation behavior can be applied for investigations with building performance simulations. The aim of this article is to close this gap in knowledge. Specifically, a survey was carried out in two German cities Dresden and Erfurt regarding window ventilation behavior on hot (outside temperature > 30 °C) and average summer days to determine how, when and for how long ventilation is actually implemented in residential buildings. The results show that approximately 80 % of respondents ventilate their living rooms and bedrooms mainly at night and/or in the early morning on both hot and average summer days – although the individual window ventilation behavior may vary significantly. The details provided by the respondents were processed to create characteristic window ventilation profiles in order to reflect the individual user behavior more realistically in future studies, especially for overheating evaluations by building performance simulation.
{"title":"Window Ventilation Behavior for Overheating Evaluation: Residents’ Survey and Derived Ventilation Profiles","authors":"D. Schiela, C. Schünemann","doi":"10.11113/ijbes.v8.n3.852","DOIUrl":"https://doi.org/10.11113/ijbes.v8.n3.852","url":null,"abstract":"Studies have shown that night-time ventilation can greatly reduce indoor overheating during hot spells. Yet the relevant literature is largely silent on which specific time resolved window ventilation behavior can be applied for investigations with building performance simulations. The aim of this article is to close this gap in knowledge. Specifically, a survey was carried out in two German cities Dresden and Erfurt regarding window ventilation behavior on hot (outside temperature > 30 °C) and average summer days to determine how, when and for how long ventilation is actually implemented in residential buildings. The results show that approximately 80 % of respondents ventilate their living rooms and bedrooms mainly at night and/or in the early morning on both hot and average summer days – although the individual window ventilation behavior may vary significantly. The details provided by the respondents were processed to create characteristic window ventilation profiles in order to reflect the individual user behavior more realistically in future studies, especially for overheating evaluations by building performance simulation.","PeriodicalId":43031,"journal":{"name":"International Journal of Built Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63538309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.745
Van Tam Nguyen, Bao Ngoc Nguyen, T. Nguyen, Hai Tuan Dinh, Anh Tung Chu
The COVID-19 pandemic has generated a wide range of socio-economic disruption, which causes devastating in numerous aspects. Our knowledge of the true health of the construction industry under the ravage of COVID-19 outbreak is largely based on very limited data. This study aims to assess the impact of pandemic on the construction industry through an investigation in Vietnam. Data were collected through 129 respondents whose online questionnaire survey completed according to their recent direct or indirect participation in delivering construction projects during the spread. The implications of COVID-19 on the construction industry were examined based on simple percentage analysis and Relative Importance Index approaches. Three principal facets of the construction industry were considered: firms' business activities, project performance, and workforce demand. The findings highlighted the multilevel, multidimensional nature of the epidemic consequences on the construction sector. Notably, the revenue and profitability, in a general sense, have decreased during the COVID-19 period, while most of the production and business costs had remained unchanged. Further, the pandemic was argued to impair construction practitioners' incomes and mental health and sabotage projects' schedule and cost.
{"title":"The Impact of the COVID-19 on the Construction Industry in Vietnam","authors":"Van Tam Nguyen, Bao Ngoc Nguyen, T. Nguyen, Hai Tuan Dinh, Anh Tung Chu","doi":"10.11113/ijbes.v8.n3.745","DOIUrl":"https://doi.org/10.11113/ijbes.v8.n3.745","url":null,"abstract":"The COVID-19 pandemic has generated a wide range of socio-economic disruption, which causes devastating in numerous aspects. Our knowledge of the true health of the construction industry under the ravage of COVID-19 outbreak is largely based on very limited data. This study aims to assess the impact of pandemic on the construction industry through an investigation in Vietnam. Data were collected through 129 respondents whose online questionnaire survey completed according to their recent direct or indirect participation in delivering construction projects during the spread. The implications of COVID-19 on the construction industry were examined based on simple percentage analysis and Relative Importance Index approaches. Three principal facets of the construction industry were considered: firms' business activities, project performance, and workforce demand. The findings highlighted the multilevel, multidimensional nature of the epidemic consequences on the construction sector. Notably, the revenue and profitability, in a general sense, have decreased during the COVID-19 period, while most of the production and business costs had remained unchanged. Further, the pandemic was argued to impair construction practitioners' incomes and mental health and sabotage projects' schedule and cost.","PeriodicalId":43031,"journal":{"name":"International Journal of Built Environment and Sustainability","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63538656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.11113/ijbes.v8.n3.831
M. Hassanain, Mohammed Kajak, Mohammad B. Hamida, Ahmed M. Ibrahim
Mosques are religious and cultural facilities that are used as a place of worship, social gatherings, and religious events by Islamic communities. The built environment in these facilities should meet certain technical, functional, and behavioral requirements for worshipers. Mosques could endure critical defects and inadequate performance, with gaps in knowledge, of appraisal tools for their overall performance assessment. Therefore, this research was motivated by the need to identify and purpose an exemplary systematic process upon the conduct of post-occupancy evaluation, owing to the fundamental need for satisfactory conditions that need to be met by mosque facilities. Thus, this paper presents an exemplary post-occupancy evaluation of mosque facilities in Saudi Arabia; as a religious built environment. A triangulation approach of data collection and assessment methods were followed and discussed in this research. A case study mosque was selected, following a review of literature. Interviews and walkthrough inspection identified 34 performance elements. Users’ satisfaction survey data were collected and analyzed. Recommendations were proposed towards improving performance of the case study mosque as a religious built environment that demands satisfactory occupancy conditions. The findings indicated that worshipers were strongly satisfied with the conditions of the built environment in the case study facility; including acoustical comfort, spirituality, and aesthetic performance elements. This paper expands the boundaries of knowledge in terms of identification of mosques’ performance elements
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