The Influence of Surface Ground Material on the Outdoor Thermal Value

Abstract

The provision of open space in the building for educational purposes such as university is mandatory to ensure the balance between the buildings and the environment. Besides, the availability of open space in construction projects, particularly architecture, is also listed as one of the requirements that must be included when applying for a building permit. What is more, besides its functional factor, open space planning is expected to enhance campus aesthetics. The strategy in choosing the proper material for covering open areas in the tropical climate country is still challenging. It holds a significant contribution to reducing the effect of urban heat island phenomena. This article discusses the impact of changing surface ground materials on the site radiation of an open space called "lapangan lilin,"located in Atma Jaya University, Yogyakarta, Indonesia. The research incorporated computer simulation methods, ENVI-met, to compare several types of materials and their effects on the environment. The result shows that of the four types of materials that being compared (paving, soil, asphalt, and grass), the soil material gives the best outdoor thermal value impact compared to other materials.