Kajian Teknis Dan Biaya Pekerjaan Facade Curtain Wall Unitized System Pada Proyek Bangunan Gedung
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Abstract
The façade curtain wall is a crucial component of a building, as it is the first to be influenced by external factors such as wind loads, rain, temperature, and light, thus determining the feasibility and market value of high-rise building projects. The construction process begins with design, aluminum structure analysis, fabrication, and on-site installation, all of which require special attention to achieve the desired results. Failure to do so may lead to structural failure, resulting in air and water leakage into the building's interior. This study aims to evaluate the technical and economic feasibility of the aluminum structure in façade curtain wall projects. The research methods include the analysis of moments, deflection, and shear strength in aluminum connections, as well as the calculation of unit costs. Technical data were obtained through structural testing using M6 A2-70 diameter pilot screws and M-10 and M-12 Grade A2/70 bolts and nuts in aluminum mullion connections. The results indicate that the moments and deflection in the aluminum structure are within the allowable limits, and the shear checks on the connections do not exceed the specified shear strength, signifying that the connections can safely bear the applied loads. Additionally, the unit cost calculation of Rp 621,836/m² demonstrates that the cost of aluminum façade work is efficient and below the industry standard average.
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