STUDI PERENCANAAN PONDASI TIANG PANCANG PADA GEDUNG RUMAH SAKIT NATIONAL HOSPITAL INSTITUT TEKNOLOGI NASIONAL MALANG JAWA TIMUR

The National Hospital Building, National Institute of Technology, Malang, East Java is a multi-story building consisting of 8 floors and has overall dimensions of 144 meters x 52.4 meters. This building is located on Jl. Raya Karanglo KM. 2, Tasikmadu, District. Lowokwaru, Malang City, East Java 65153. The National Hospital Building is a building with a reinforced concrete structure and has been planned using a bore pile foundation with a diameter of 0.6 meters with a depth of 14 meters. The substructure in this alternative study is planned to use a pile foundation with a diameter of 0.6 meters with a depth of 9 meters. In the analysis of the upper structure of the National Hospital Building, Staad-Pro V22 software was used and was based on SNI 2847:2019. From the analysis results, it was found that the maximum axial load value was 7350 kN at point B-16 and the minimum axial load value was 917 kN at point G-26. It was planned that the pile foundation would be 0.6 meters in diameter with a depth of 9 meters. From the results of this planning, the bearing capacity of the piles was 1688.92 kN and the bearing capacity of group piles was 10052.83 kN. Pile Cap is planned to be 6 types, type 1 has dimensions of 5.4 meters x 1.8 meters, type 2 has dimensions of 3.6 meters x 9 meters, type 3 has dimensions of 3.6 meters x 5.4 meters, type 4 has dimensions of 3.6 meters x 3.6 meters, type 5 has dimensions of 3.6 meters x 7.2 meters, and type 6 has dimensions of 5.4 meters x 5.4 meters, all pile cap types are planned to be 1 meter thick. Pile cap reinforcement uses main reinforcement D25-150 mm for the x direction and y direction, while shrinkage reinforcement uses D19-150 mm. The length of the filled concrete is planned to be 950 mm with 14-D19 longitudinal reinforcement and D10-65 mm spiral reinforcement. Planning for hairpin reinforcement uses reinforcement measuring D13-150 mm. The largest decrease occurred at 6,471 cm at points J-2, J-3, K-2, and K-3 during 10 years.