Firmansyah, Setyoko Bayu (2025) Perencanaan Pondasi Tangki BBM dan Bund Wall Di Port Kelanis Kabupaten Barito Selatan Kalimantan Tengah. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PT Adaro Logistik merencanakan pembangunan dua tangki BBM baru di Port Kelanis dengan kapasitas masing-masing 2500 kL dan diameter tangki 10 m dengan tinggi 12 m. Untuk mengantisipasi potensi tumpahan BBM, direncanakan timbunan bund wall setinggi 1,7 m, dengan kemiringan 1:1 dan jarak 9 m dari sisi luar tangki. Berdasarkan penyelidikan tanah dengan metode sondir dan SPT, lapisan tanah lunak berada pada kedalaman 3-12 m dan tanah keras berada pada kedalaman lebih dari 40 m. Lapisan permukaan berupa lanau pasiran pada kedalaman 0–3 meter dengan tingkat kepadatan rata-rata sedang. Tugas akhir ini membahas perencanaan fondasi tangki BBM di Port Kelanis menggunakan fondasi square pile dengan dua alternatif dimensi, yaitu 250 mm dan 500 mm. Perhitungan daya dukung dilakukan menggunakan metode Luciano Decourt dan Mayerhof. Selain itu, direncanakan alternatif timbunan bund wall tegak yang stabil dan tidak mengalami pemampatan. Hasil evaluasi menunjukkan bahwa square pile berukuran 250 mm merupakan pilihan paling efisien secara biaya material, dengan selisih sekitar 29% dibanding dimensi 500 mm. Sementara itu, timbunan bund wall tegak lebih efisien dibanding timbunan miring, dengan selisih biaya material mencapai 43%.
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PT Adaro Logistics plans to construct two new fuel storage tanks at Port Kelanis, each with a capacity of 2,500 kL, a diameter of 10 meters, and a height of 12 meters. To mitigate the risk of fuel leakage, a bund wall embankment is planned with a height of 1.7 meters, a side slope of 1:1, and a distance of 9 meters from the outer edge of the tanks. Based on soil investigations using the CPT (sondir) and SPT methods, a soft soil layer was found at depths of 3–12 meters, and a hard soil layer was encountered at depths greater than 40 meters. The surface layer consists of silty sand at depths of 0–3 meters with medium average density. This final project discusses the foundation design for the fuel storage tanks at Port Kelanis using square pile foundations with two dimensional alternatives: 250 mm and 500 mm. Bearing capacity calculations were carried out using the Luciano Decourt and Mayerhof methods. Additionally, an alternative design of a vertical bund wall embankment was proposed, aimed at achieving stability and minimizing settlement. The evaluation results indicate that the 250 mm square pile is the most cost-efficient option, with a material cost difference of approximately 29% compared to the 500 mm alternative. Meanwhile, the vertical bund wall embankment is more economical than the sloped alternative, with a material cost savings of up to 43%.
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