Universitas Gadjah Mada (UGM) is implementing the concept of green campus by various means including through elements in its sustainable campus development plan. With regards to several factors related to Energy and Climate Change indicators set by UI GreenMetric, this research examined the existing condition of the area of UGM which belongs to academic zone in order to construct a proposal based on a building mass reconfiguration. This proposal was aimed to improve the implementation of energy-specific green campus concept within the Forestry cluster area as a sample case study. This selection was based on the average value of the Building Coverage Ratio (BCR) values in all of the clusters; thus, the scenario was relevant for generalization and could be replicated in other clusters in the university. The study was done in three stages of simulation, and was based on a series of digital simulation of sunlight hour and solar radiation run in Grasshopper using Lady Bug environmental analysis plug-in for a period of five summer months during the building office hours. Following the reconfiguration, results had shown a similar downtrend between the amount of sunlight hour and solar radiation in the area (up to 49% and 45% respectively on building envelopes, and up to 44% and 42% respectively on landscaping surfaces). This reduction indicated a potential of energy efficiency by applying selective building mass reconfiguration as a passive design strategy that goes hand in hand with the campus’s development policy to optimize the use of BCR for a greener UGM campus through its many undergoing and upcoming redevelopment projects.
Sliding Sudare has a big potential to be developed considered its high effectiveness in minimizing building energy consumption while still maintaining its visibility quality. Meanwhile, its original blinds that is made of bamboo cannot withstand extreme weather and have a short lifespan. Therefore, this research is to investigate the effectiveness of the other material alternatives namely stainless steel, plastic, and natural fiber. A scaled model is used for prototyping the materials in the shape of bicycle spokes, PLA+ (3D printer filament), and bamboo slats as the blinds. These everyday objects were tested in terms of their physical characteristic and were measured by four parameters (security requirement, weather resistance, construction process, and cost-effectiveness). From the research, it was concluded that bicycle spokes has the highest overall performance with the highest advantages in weather resistance requirement, cost-effectiveness, and construction; whilst PLA+ and bamboo slats have the least overall performance though both have high advantage in terms of security requirement.
The use of technology is a big opportunity to explore architectural design. This research examines the possibility of form-finding process by using computational design approach to generate shading devices that can represent local identity and provide efficient energy use of the building. Some examples of geometric Batik patterns found on the local screen used in one of the Indonesian traditional houses will be transformed into perforated shading devices. The process consists of three stages: understanding the symmetry group of each pattern with crystallographic chart analysis, generating a digital mesh of the objects by using photogrammetry method, and reinterpreting the object mesh to the perforated panel using parametric approach. The result shows that Banji pattern on p4gm symmetry group, while Kawung pattern on p4mm, Parang pattern on p1, and Nitik pattern on c2mm. On the photogrammetric stage, the digital three-dimensional meshes are successfully formed by using 13-19 overlapping photographs of the objects. From the last stage, perforated batik pattern panels are generated and it is possible to set the perforation percentage to reach desired WWR value. This experiment indicates that the use of computational design is possible to develop the local ornaments into a controllable perforated shading device.
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