<![CDATA[The construction of the Mojokerto Water Treatment Plant (WTP) Building involved a change in the foundation type from driven piles to bored piles because the construction site was located close to an existing ground water tank. This condition required a foundation design capable of supporting the structural loads while minimizing the risk of soil settlement that could affect the surrounding structure. This study aims to analyze the structural design of the bored pile foundation for the Mojokerto WTP Building construction project. The study employed a quantitative method using primary data obtained through interviews and direct observations, as well as secondary data consisting of structural design and loading documents. Structural loading analysis was performed using ETABS by considering dead loads, live loads, wind loads, and earthquake loads in accordance with the applicable SNI standards. The analysis results showed a vertical axial force at the structural base of 355.593 kN, a horizontal force in the X direction of -34.1179 kN, a horizontal force in the Y direction of -37.1186 kN, an X-direction moment of 290.8511 kNm, and a Y-direction moment of 109.4768 kNm. The roof structure foundation was designed using four bored piles with a diameter of 40 cm and a length of 8 m. The allowable bearing capacity of a single pile was 41.28 tons, while the allowable bearing capacity of the pile group was 125.11 tons, exceeding the total axial load of 54.05 tons. Foundation settlement was 2.658 cm based on the semi-empirical method and 0.418 cm based on the empirical method, both of which were below the allowable settlement limits. For the main WTP building, 75 bored piles were designed with a pile group bearing capacity of 2,421.48 tons, exceeding the total axial load of 1,555.48 tons. Based on the analysis results, the designed bored pile foundation was considered safe and satisfied the requirements for bearing capacity, settlement, and structural safety.]]>
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