PERENCANAAN STRUKTUR PONDASI TIANG PANCANG RUMAH SAKIT ORTHOPEDI & TRAUMATOLOGI KOTA SURABAYA

The use of pile foundations in high-rise buildings aims to resist the forces acting on the superstructure. Based on analysis using the STAAD.Pro V8i application, the maximum axial load was obtained at column grid point B-6, amounting to 3688.416 kN. A pile foundation with a diameter of 0.6 m was designed, having a single pile bearing capacity of 1043.6 kN and a group pile bearing capacity of 4765.07 kN at a depth of 27 m.The pile cap was designed in three types: Type 1 with dimensions of 5.4 m × 3.6 m × 0.8 m, Type 2 with dimensions of 3.6 m × 3.6 m × 0.8 m, and Type 3 with dimensions of 5.4 m × 1.8 m × 0.8 m. These pile cap types were determined based on the largest axial load. The reinforcement arrangement for the pile cap consists of D16 bars at 100 mm spacing in both the x and y directions, while the distribution reinforcement uses D16 bars at 150 mm spacing.The pile reinforcement for a pile diameter of 60 cm uses 14-D19 longitudinal bars with D10 spiral reinforcement at 65 mm spacing. The maximum settlement occurred at 5.80 cm over a period of 49 years. Settlement in high-rise buildings must satisfy the equation S < 15 + b/600, and the result obtained was 5.80 < 15.67, thus meeting the requirement based on SNI 8460–2017:178 concerning Geotechnical Engineering.