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All Journal International Conference on Coastal and Delta Areas JURNAL PENELITIAN EKONOMI DAN AKUNTANSI (JPENSI) Jurnal Ilmiah Sultan Agung
Selvia Agustina
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Religion Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Law, Crime, Criminology & Criminal Justice Nursing Public Health Other

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The Potential Liquefaction in Yogyakarta and Bantul Selvia Agustina
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

The phenomenon of liquefaction occured in Yogyakarta at the massive earthquake on May 27th, 2006. This phenomenon may be occur again because of the geological and seismic conditions in Yogyakarta that support the occurrence of liquefaction. This research aims to determine the level of liquefaction potential in Yogyakarta especially the central of Yogyakarta and Bantul. Analysis of Liquefaction potential use Youd method. The results of soil investigation shows that the type of soil in the research area is uniformly graded sand. The depth of the ground water level in October 2015 in the research area around 0,8-13,4 meters. The Attenuation function of Crouse-Mc Guire produce PGA largest value-which is about 0,23g-0,56g. The potential liquefaction in Yogyakarta is about 0 – 2,06 (very low) and Bantul is about 0 – 48. Watu is the highest potential liquefaction in Bantul. Keywords: earthquake, liquefaction, LPI
The Effect of Decreased Transaction Volume on the Low Increase in E-commurce Revenue During the Pandemic on the Shope Application in 2020 Imam Hidayat; Selvia Agustina
JURNAL PENELITIAN EKONOMI DAN AKUNTANSI (JPENSI) Vol 7, No 1 (2022): JURNAL PENELITIAN EKONOMI DAN AKUNTANSI (JPENSI)
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/ja.v7i1.1015

Abstract

This study aims to determine whether there is an effect of transaction volume on the low income of E-commerce in the current pandemic era. The sample in this study was 1 company, namely Shopee, so that the data obtained were 84 data. The data collection technique is non-participatory observation, namely collecting, recording and reviewing secondary data in the form of consumer reviews of Shopee users. The results showed that there was no effect between the decrease in transaction volume and the low increase in E-commurce revenue.Keywords : Decrease in volume, increase in revenue
PENGARUH NEGATIVE SKIN FRICTION TERHADAP GRUP TIANG PANCANG (Studi Kasus Proyek Pembangunan Gedung Farmasi UNWAHAS Semarang) Abdul Rochim; Selvia Agustina; Muhammad Fairuz Ardhan; Ryad Rahmadi
Jurnal Ilmiah Penelitian Mahasiswa Vol 2, No 2 (2023): September 2023
Publisher : Jurnal Ilmiah Sultan Agung

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Abstract

Keamanan konstruksi bangunan Gedung sangat dipengaruhi oleh kondisi tanah dasar dan fondasinya. Negative Skin friction perlu dipertimbangkan dalam perencanaan apabila memenuhi salah satu syarat antara lain ketebalan dari lapisan lunak yang kompresibel lebih dari 10 m. Pada data tanah lunak pada kasus ini mencapai 15 m. Untuk itu tujuan dari penelitian ini adalah menganalisis pengaruh negative skin friction terhadap grup tiang pancang pada gedung farmasi UNWAHAS Semarang. Penelitian ini dimulai dengan pengumpulan data sekunder yaitu data penyelidikan tanah dan data perhitungan struktur dengan aplikasi SAP2000 gedung farmasi UNWAHAS. Kemudian kedua data dianalisis menggunakan metode Meyerhoff dan metode Vesic. Serta menghitung negative skin friction (Qneg) untuk mengetahui beban gaya gesek dinding negatif tersebut berpengaruh terhadap tiang pancang masih dalam batas aman Hasil analisa perhitungan daya dukung fondasi tiang pancang pada kedalaman 15 meter menggunakan metode Meyerhoff diperoleh Qult 235,02 Ton serta Qall 94,01 Ton, sedangkan hasil analisa perhitungan daya dukung tiang pancang grup diperoleh Qall = 429,25 Ton lebih besar dari gaya aksial fondasi tiang pancang sebesar 199,37 Ton. Untuk hasil perhitungan penurunan fondasi tiang pancang bergrup pada tipe PC 06 dengan metode Vesic diperoleh hasil 63,56 mm. Hasil analisa penelitian pada sebuah sistem tiang pancang grup pada pembangunan Gedung Farmasi UNWAHAS, didapat negative skin friction (Qneg) yang bekerja sebesar 187,083 kN dengan hasil tersebut maka dinyatakan aman. Kata Kunci: Tiang pancang, Penurunan, Negative skin friction
Co-Authors Abdul Rochim Imam Hidayat Muhammad Fairuz Ardhan Ryad Rahmadi