BIM Implementation On Design Phase Toward Low Embodied Energy Apartment: Comparative Study On 3 Alternatives Architectural Wall Materials

One of the efforts to decrease environmental impact due to construction activities is by reducing Embodied Energy in design phase. In the design phase, EE can be associated with the usage of construction materials. On the other hand, the Building Information Modeling (BIM) can be an alternative approach in improving the effectiveness and efficiency material usage. The aim of this paper is to explain how to implement BIM in calculating and reducing the value of EE. The research methodology is a mix qualitative-quantitative method that conducted by using a case study and utilized BIM model of low-cost public apartment. The EE calculation is based on material properties of the BIM model and it also depends on the unit price analysis of each construction works. Furthermore, the Life Cycle Analysis (LCA) method is used to calculate the EE of materials properties value. In order to find the best EE reduction value, a comparison analysis is conducted that it compared the use of conventional materials (as alternative 1) and 2 types of substitution materials there are prefabricated wall panels and concrete masonry unit. Thus, the EE reduction value can be seen and the best low EE material will be used as a reference in the next phase of the construction process.