Purpose The purpose of this paper is to investigate the psychosocial perception of harmattan dust on building openings, health and housekeeping to determine the influence of the dust on building occupants. Design/methodology/approach Population-representative survey data were collected from Maiduguri, Northeastern Nigeria, through physical administration of questionnaires by assessing several variables. Statistical package SPSS 16.0 was used for the data analysis, which is mainly descriptive analysis in frequencies, percentages and means together with a repeated Pearson’s chi-square analysis to identify the relationship between the factors and the significance testing. Findings The results show that majority (94.3%) experienced dust problem in harmattan season, and a larger part (76.6%) confirmed that the dust penetrates through doors and windows. Higher percentage (91.2%) noticed that the dust particles on their floor/furniture surfaces, and on an average, people clean their houses three times daily in harmattan season. Majority (80.5%) of the respondents smell dust in the harmattan season, and greater part (77.9%) experienced health challenges in this season, of which 12.8% confirmed harmattan dust aggravates their asthma, 13.6% confirmed it causes headache, 3.1% confirmed it exacerbated pneumonia, 58.5% confirmed it causes coughing, 3.5% confirmed catarrh, 2.3% confirmed nasal/respiratory congestion, sneezing and bronchitis and 6.2% experienced eye problems. Moreover, the results indicate that number/types of openings in a building are significantly associated with factors including smelling dust in the harmattan season and health problem experienced because of dust indoors. The number of times people clean their homes/workplaces is significantly related to important variables such as experiencing dust problem in harmattan season and number/type of openings in a building. The results further established that the health problem experienced by people is significantly related to important variables including dust problem experienced in the harmattan season and type of openings in a room. Originality/value Harmattan dust is a serious challenge to health and well-being of building occupants in the study area. The built environment professionals need to optimize building openings for effective dust control indoors.
Abstract:The building sector is an important stakeholder in the energy and environmental scenario of any country. It continues to grow across the world due to factors such as population growth, and economic and infrastructure development. Within the European Union, buildings account for 40% of the total energy requirements and 30% of carbon dioxide emissions. The building sector is keen to improve its sustainability standards and also to help achieve the 20-20-20 targets set by the European Union. The present work aims to design a nearly zero energy sports gymnasium building in Calolziocorte, Italy. Various sustainability techniques are applied in an integrated design project approach using ECOTECT software to undertake the energy modelling exercise. Firstly, the base-case is modelled with conventional building materials and the total energy demand is calculated. Duly considering the local climatic conditions, sustainable materials are chosen for walls, the floor, the roof, and windows and a 38% reduction is noted in the total energy demand of the building compared to the base-case. The impact of louvers as a passive design technique has also been examined on the total energy demand of the building. The monthly load/discomfort analysis is undertaken for various individual functions inside the building to identify the critical areas that consume more energy. The monthly load/discomfort analysis is performed with the proposed materials and the air infiltration rate is improved through the building envelope and 63% reduction is noted in the total energy demand of the building compared to the base-case. A solar access analysis is conducted to understand the on-site energy production and then the building net energy demand is calculated, which is reduced to 90% compared to the base-case.
Purpose -The objectives of this paper are to present the development of an indicative multi-phase systematic framework for performance appraisal of architectural design studio facilities, and to present the findings of the post-occupancy conditions of an architectural design studio facility as a case study to demonstrate the applicability of the developed framework. Design/methodology/approach -The authors carried out a number of activities. These include reviewing the published literature to address the significance of the architectural design studio as a resource for students majoring in architectural design, and ascertaining the significance of post-occupancy evaluation as a performance appraisal methodology in educational facilities. On the development of the proposed framework, the authors carried out a case study in one of the studios of the Architecture Department at King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia. The authors utilized a series of data collection methods, including photographic documentation, observations through walkthrough inspection, questionnaires and interviews. Findings -The developed framework consists of four phases. It entails identifying the performance requirements of the architectural design studio; collecting data -through conducting walkthrough inspection, questionnaire survey and interviews -to ascertain the present performance level of the architectural design studio; analyzing the data gathered from the preceding steps and subsequent reporting of findings on the degree of user satisfaction with the architectural design studio space and facilities; and developing a plan of actions in the form of recommendations to improve the conditions of the evaluated design studio. The case study served as a validation of the developed performance appraisal framework. Originality/value -The architectural design studio is known to be the place where students majoring in architectural design generate, review and display their design projects. Previous research on the performance appraisal of educational facilities indicates that the comfort of the architectural design studio space is a significant aspect to be considered and maintained for the success of the architectural education process. The paper provides a systematic approach for evaluating the major performance requirements of an architectural design studio. It is of practical value to space planners, design professionals, facility managers and administrators involved in the planning, design, operation and management of such facilities.
Increasing attention is being given to energy consumption and potential for energy savings in public buildings in order to improve energy performance. Due to their size and functional requirements, public buildings especially cafeteria facilities tend to consume a significant amount of energy. Furthermore, due to their operational characteristics and construction pattern, unnecessary energy is likely to be used for maintaining acceptable indoor environmental quality. In this study, a student cafeteria at King Fahd University of Petroleum and Minerals, Saudi Arabia, was selected for the assessment of its energy performance and potential energy conservation opportunities. Energy simulation software Visual DOE 4.1 was used to develop an energy performance model for assessing various energy conservation measures pertinent to the building envelope and HVAC system design. Data required for setting up the model were gathered through simple energy audits. The architectural and mechanical drawings and the history of electrical consumption were collected. Various energy conservation strategies were then implemented including standards, single and combined energy conservation measures. These measures resulted in a combined design saving of 27.4%, the HVAC system saving 10.6%, implementation of standards saving about 16.7%, lighting 6.6%, equipment 2.6%, insulation 2.5% and glazing 1.4%. Based on these results, it is apparent that there is a significant potential for improving energy performance and justification to employ the suggested measures for achieving substantial energy savings and minimize energy consumption.
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