DOWNLOAD THE COMPLETE PROJECT

11 Users found this project useful

The Influence of Building Compactness on Environmental Performance

Abstract

Building compactness is an important characteristic of architectural form that influences the relationship between a building's internal spaces and its external environment. It describes the degree to which a building encloses a given floor area within a relatively small external surface area. The compactness of a building can affect heat transfer, solar exposure, natural ventilation, daylighting, material requirements, and energy consumption. Understanding these relationships is therefore important for developing building forms that achieve improved environmental performance while satisfying functional and aesthetic requirements. This study examines the influence of building compactness on environmental performance, with particular attention to how variations in building form and surface-to-volume relationships affect environmental conditions. It considers factors such as floor-plan configuration, building height, external surface area, building volume, orientation, and form complexity. The study evaluates how compact and less compact building configurations respond differently to environmental conditions and how these differences may influence overall building performance. The study further investigates the relationship between building compactness and thermal behaviour. More compact forms may reduce exposed building envelope areas and consequently limit unwanted heat exchange, while less compact forms can provide greater opportunities for daylight penetration, cross-ventilation, and external shading. The influence of building geometry on solar heat gain, internal temperature, daylight distribution, airflow, and cooling requirements is therefore considered. The interaction between compactness and envelope design is also examined to determine how building form can support passive environmental strategies. Climatic and contextual factors are considered in assessing the environmental implications of building compactness. The suitability of a particular degree of compactness may vary according to temperature, humidity, solar radiation, prevailing wind conditions, and seasonal variations. Site orientation, surrounding buildings, vegetation, shading conditions, and urban density can further modify environmental performance. The study therefore recognizes that compactness should not be considered independently but as part of an integrated approach to climate-responsive building design. Despite its potential environmental benefits, excessive compactness can create challenges related to daylight access, natural ventilation, internal spatial quality, and building orientation. Conversely, highly fragmented or elongated forms may increase exposed surface area and heat transfer while providing greater opportunities for environmental interaction. Achieving an appropriate balance is therefore essential to avoid prioritizing one performance objective at the expense of others. Consideration must also be given to building function, occupancy patterns, construction requirements, and user comfort. The study aims to establish a clearer understanding of how building compactness influences environmental performance and to identify design considerations for achieving an appropriate balance between enclosure efficiency and environmental responsiveness. The findings are expected to support architects and designers in selecting building forms that reduce unnecessary environmental loads while maintaining adequate daylight, ventilation, thermal comfort, and functional quality. The study can contribute to the development of more efficient and climate-responsive architectural design strategies.

Keywords: Building compactness, environmental performance, building form, surface-to-volume ratio, thermal performance, energy efficiency, solar heat gain, natural ventilation, daylighting, building envelope, climate-responsive design, building geometry, passive design, thermal comfort.