Disaster of soil movement from NDMA (National Disaster Management Authority) of Indonesia mention from 2003-2017 shows the increasing. Investigation of potential ground motion based on sampling data of boring test on slopes along the Denpasar-Singaraja road around Gitgit Village which provides the greatest threat to settlements and public facilities. This research is expected to show the influence of rainfall on slope stability. This research is expected to show the influence of rainfall on slope stability. Furthermore, safety factor analysis based on daily rainfall data and numerical analysis was assisted by SLOPE/W and SEEP/W software tools. The analysis was carried out using a normal, heavy, and very heavy rain model. Safety factor declined after the 3rd day of rain after that the safety factor dropped to the 6th day with a safety factor 1.141 indicating the condition to be critical. The result shows the effect of rainfall decreasing safety factor after the second day of rain and the fourth day of safety factor shows a value of 1.003 where the slope is in a critical condition leading to failure, these results can be used to make early warning system of landslide hazard.

Keruntuhan terjadi sehari setelah hujan ekstrim yang terjadi selama 4 hari mengguyur daerah sekitar Kecamatan Kintamani pada bulan Februari. Tingginya kerusakan yang terjadi perlu dilakukan analisa teknis untuk mengetahui penyebab terjadinya keruntuhan melalui observasi dan pengamatan di lapangan dan data-data terkait laporan dari dinas terkait. Tujuan dari analisa ini adalah agar DPT yang akan dibangun kembali menjadi lebih kokoh untuk menahan beban dan menghindari terulangnya kejadian serupa pada bangunan yang baru. Dari observasi dan fakta lapangan dan analisa numeris pada lereng longsor, keruntuhan DPT disebabkan oleh karena dimensi DPT yang terlalu ramping sehingga tidak mampu menahan tekanan tanah aktif saat jenuh air. Drainase DPT tidak berfungsi dengan baik sehingga tanah gampang jenuh saat hujan. Keruntuhan juga disebabkan oleh tergerusnya pondasi DPT akibat masuknya air pada retakan horisontal pada bahu jalan. Pondasi DPT tidak berada pada lapisan tanah yang stabil. Penanggulangan risiko bencana diawali dengan penilaian dan pemetaan risiko bencana. Pembelajaran terhadap masyarakat didaerah rawan bencana longsor dilakukan secara intensif agar mampu menilai secara visual ancaman terjadi. Upaya mitigasi lebih efektif lainnya dengan investasi pengurangan risiko bencana berupa penerapan system peringatan dini dengan teknologi tepat guna. Kata Kunci : manajemen infrastruktur, dinding penahan tanah, mitigasi bencana, Geo-Slope.

Design of building structure always related to the foundation, field testing is often done to test the bearing capacity of the soil in the form of a cone penetration test (CPT) and a standard penetration test (SPT). From the two field tests that are often done, it is necessary to research the amount of bearing capacity obtained through CPT and SPT data. This study uses a bearing capacity analysis of the pile foundation using CPT and SPT data in Pesanggaran, Bali, Indonesia. The analysis was carried out by comparing the bearing capacity of pile foundations using pile foundations with dimensions of 15 cm, 20 cm, 25 cm and 30 cm at a level of 10 meters. The results of the bearing capacity percentage are then compared. From the analysis conducted, the bearing capacity of pile foundations using CPT data has a higher value than the carrying capacity of poles using SPT data with a bearing capacity difference of 10,4-16,3%.Perancangan suatu struktur erat kaitannya dengan fondasi, pengujian lapangan yang sering dilakukan untuk mengetahui daya dukung fondasi berupa cone penetration test (CPT) dan standard penetration test (SPT). Dari dua pengujian lapangan yang sering dilakukan, maka perlu dilakukan dilakukan penelitian mengenai seberapa besar perbedaan hasil daya dukung yang diperoleh melalui data CPT dan SPT. Penelitian ini melakukan perbandingan analisis daya dukung fondasi tiang dengan menggunakan data CPT dan SPT di Pesanggaran, Bali, Indonesia. Analisis dilakukan dengan membandingkan daya dukung fondasi tiang menggunakan fondasi tiang berdimensi 15 cm, 20 cm, 25 cm, dan 30 cm pada kedalaman 10 meter. Hasil persentase daya dukung yang diperoleh kemudian dibandingkan. Dari analisis yang dilakukan, diperoleh daya dukung fondasi tiang menggunakan data CPT memiliki nilai lebih tinggi daripada daya dukung tiang menggunakan data SPT dengan perbedaan daya dukung 10,4-16,3%.

Waste accumulation in a landfill is often made a problem, especially when the landfill has reached the end of its service life, so there is a need for further utilization of the landfill, one of the things that can be done is to utilize the landfill as a place where a building can be built. In this research, a review of the waste settlement and slope stability uses the Plaxis Program to determine whether the landfill is able to withstand the burden of buildings. The research is located at Piyungan Yogyakarta Landfill. Material data in the form of the value of the friction angle, the volume weight of waste, and the modulus of elasticity obtained from previous research. From the results obtained, it is known that the deformation of waste that occurs shows a significant settlement up to 45 cm with load 1250 kg/m2 so the foundation design at landfill area needs concern about high settlement, and this can be used as the basis for sustainable utilization of landfill.