A Study of the Effect of Building Orientations on Reducing Dust in Building Groups, Case Study among Buildings in Dezful Urban Areas

Dust particles have triggered a precarious condition in the southwestern regions in Iran. It brings about an unstable air-breathing health situation for the local residents. Therefore، an immediate collaboration is necessary among a variety of experts in different fields including the environment، health environment، geology، physical geography، chemistry of air pollution، fluid mechanics، meteorology، environmental design، and natural resources، etc.; Meanwhile، it is obvious that the problem cannot be resolved by a single specialist. From among these professionals، it is worth mentioning that the architects can participate effectively to tackle this problem with their appropriate efforts. In this regard، architects as comprehensive designers and beneficiaries of the results of the above mentioned specialties are needed to coordinate and bring together all efforts to help developing an opposite environment in which residential space conditions are facilitated. In this study، the researcher tries to find the appropriate way for the building orientation and its openings in order to provide an instruction for the architectural design as an initial step in designing the buildings against dust particles. At first، appropriate case studies were indicated and located among the buildings in Dezful urban areas. Then، it continued to find an appropriate method to determine different aspects of this problem، in a way that the capability of analyses and comparisons can be offered in different circumstances. After that، collecting long-term data (dust particles measurements from four sides of buildings and meteorological data) has been studied in relation to various buildings. Then، the result has been surveyed according to the analysis of data collection and discussion. Finally، the side of the building where it absorbs most of the dust and the side of the building where the most of the suspended dust particles are hold in the air were allocated (95% of the data collection includes these conditions) according to the direction of wind. Thus، with the identification of the prevailing wind in each region، the generalizability of the theory in this study can be achieved.