MODIFICATION OF BUILDING DESIGN USING PRECAST PRESTRESSED CONCRETE
DOI:
https://doi.org/10.26740/rekats.v13n02.p235-253Keywords:
Precast, Prestress, Connection, Primary Structure, Structure AnalysisAbstract
The Multi-story building structures require careful planning by considering efficiency, strength, and material durability. In this design, the building structure is planned to be eight stories high using a precast concrete system with prestressed beams and slabs. Structural elements that utilize the precast system include slabs, beams, and columns. The precast system is chosen for its advantages in construction time efficiency and structural dimension efficiency due to the superior quality of concrete. The prestressed concrete system will be applied to precast slabs and certain beams. The use of the prestressed concrete system reduces the structural weight thanks to smaller structural element dimensions and extends the lifespan of the structure due to improved durability. This design refers to several standards and regulations, including SNI 2847:2019, SNI 7833:2012, SNI 1726:2019, SNI 1727:2020, the PCI Handbook, and several other guidelines. The connections employed for the precast elements are tie steel for slab-beam connections, NMB Splice Sleeves for column connections, and corbels for beam-column and slab-wall connections. The software tools used in this design are ETABS for structural analysis and AutoCAD for drafting the design drawings. The results show that the use of a precast system with Hollow Core Slab and prestressed beams improves structural efficiency and complies with SNI 2847:2019. This design is expected to serve as a reference for more efficient and durable high-rise building planning.
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