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Analisis Deformasi Gunung Agung Berdasarkan Data Citra SAR Sentinel-1A dan Metode D-InSAR Lysa Dora Ayu Nugraini; Dika Ayu Safitri
Jurnal Ilmiah Geologi PANGEA Vol 9, No 1sp (2022): Jurnal Ilmiah Geologi PANGEA Edisi Spesial
Publisher : PROGRAM STUDI TEKNIK GEOLOGI FAKULTAS TEKNOLOGI MINERAL UPN VETERAN YOGYAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jigp.v9i1sp.9407

Abstract

Abstrak – Gunung Agung merupakan salah satu gunung berapi aktif di Indonesia yang terletak di Kabupaten Karangasem Provinsi Bali, yang pada tanggal 21 November 2017 silam telah meletus dan mengakibatkan ribuan orang mengungsi. Monitoring aktivitas fisik gunung berapi penting untuk dilakukan guna memahami proses dan perilaku gunung berapi. Salah satu aktivitas fisik gunung berapi yang dapat secara berkala diamati adalah deformasi permukaan sebagai salah satu parameter ada tidaknya peningkatan aktivitas magma di bawah permukaan gunung itu sendiri. Penelitian ini memanfaatkan teknologi penginderaan jauh sensor aktif dalam rangka menganalisis deformasi permukaan yang terjadi di Gunung Agung sesaat sebelum meletus menggunakan citra Sentinel-1A dan metode D-InSAR. Hasil pengolahan data menunjukkan adanya deformasi yang terjadi di Gunung Agung sebelum terjadi letusan. Nilai deformasi bervariasi, dimana uplift terjadi pada wilayah puncak Gunung Agung dan wilayah Budakeling yang terletak disebelah tenggara dengan besar nilai uplift pada kedua titik sampel ini adalah 4 hingga 5 cm. Sedangkan rata-rata kejadian subsidence terjadi diwilayah Sukadana yang berada di utara dan berjarak 10 km dari puncak Gunung Agung dengan nilai penurunan tanah sebesar 4-5 cm. Kata Kunci: Deformasi, Gunung Agung, Sentinel-1A, D-InSAR. Abstract – Mount Agung is one of the active volcanoes in Indonesia located in Karangasem Regency, Bali Province, which erupted on November 21, 2017, displacing thousands of people. Monitoring the physical activity of volcanoes is essential to understand the process and behavior of volcanoes. One of the physical activities of the volcano that can be regularly observed is surface deformation as one of the parameters of whether or not there is an increase in magma activity under the mountain's surface. This research utilizes active sensor remote sensing technology to analyze the surface deformation on Mount Agung shortly before the eruption using Sentinel-1A images and the D-InSAR method. The data processing results show the deformation that occurred on Mount Agung before the eruption. The deformation value varies, where uplift occurs in the peak area of Mount Agung and the Budakeling area located to the southeast. The uplift value at these two sample points is 4 to 5 cm. At the same time, the average subsidence occurred in the Sukadana area located in the north and 10 km away from the peak of Mount Agung, with a subsidence value of 4-5 cm. Keywords: Deformation, Mount Agung, Sentinel-1A, D-InSAR.
Peninjauan Mutu Beton Ready Mix pada Baching Plant-Surabaya Rizqi Dwi Nanda; Febriyanti Milo; Intan Rizqi Nalindri; Galuh Windu Anjasari; Dika Ayu Safitri
Jurnal Kendali Teknik dan Sains Vol. 2 No. 2 (2024): April : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v2i2.3019

Abstract

Quality control review of concrete at PT. Merak Jaya Beton is important to ensure that the work carried out meets quality standards and is implemented according to existing procedures. PT. Merak Jaya Beton is one of the companies in Indonesia that produces precast concrete. At PT. Merak Jaya Beton, quality is highly regarded from trials before being taken to projects (trial mix and F’c)to construction projects (Slump tests), checking the proportions of mixtures and uniformity of basic materials at the batching plant, to hammer test checks. The process of selecting the right concrete materials can determine the amount or quantity of dependency on materials considering the quality requirements of the concrete used. Several specifications of ready-mix concrete are produced to meet the specifications demands from clients. Meanwhile, for material quantity planning based on the production volume to be implemented, it includes material needs, ordering cycles, and the amount of orders. In concrete mixtures, there are materials added during the Mixing process (admixtures), this is aimed to alter the properties of concrete to make it more suitable and cost-effective.
Perbedaan Proses Pengadaan Barang Dan Jasa Metode Konvensional Dengan Menggunakan Jurnal Mekari Di PT. Sarana Remaja Mandiri Lathifia Qolbina; Seconddina Wahyu Riya; Ramadhan Azzahdewa Devangga; Alfian Febriansyah Muttaqin; Dika Ayu Safitri
Jurnal Kendali Teknik dan Sains Vol. 2 No. 2 (2024): April : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v2i2.3025

Abstract

Procurement of Goods and Services at PT. Sarana Remaja Mandiri still use conventional systems. By using the Mekari Journal, as a procurement process in the company, it will have a significant impact on developing more efficient procurement. Organizations across all industries rely on Procurement Management expertise to source and manage relationships with external suppliers, ensuring these needed goods are obtained at the best cost. This aims to determine differences in procurement of goods and services at PT. Sarana Remaja Mandiri. The method used is the Mekari Journal, which makes it easier to document the documentation process for procurement of goods and services at PT. Sarana Remaja Mandiri. The Mekari journal will record the entire PO process that has been issued, delivery status, and payment status. Mekari Journal makes it easier for related parties in the company to access the progress of the goods and services procurement process. After analyzing and discussing the problem, the author comes to the conclusion that in the PO (purchase order) process, Jurnal Mekari helps in the efficiency process because by using this software, the procurement party only needs to enter related data such as supplier name, PO number, item name, number of items. , etc. By filling in the data in the Mekari Journal in the Purchase Order section, a PO will automatically be issued along with a template. So, companies don't need to create templates for PO documents.
Penyelidikan Tanah Menggunakan Metode Uji Sondir Di Universitas 17 Agustus 1945 Surabaya Irgi Rangga Prayoga; Mohammad Chilmi Zakariyah; Priangga Surya Maulana; Ahmad Moh Wildanul Abror; Dika Ayu Safitri
Jurnal Kendali Teknik dan Sains Vol. 2 No. 2 (2024): April : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v2i2.3030

Abstract

Cone Penetration Test (CPT) is a method designed to determine and test the strength of soil layers quickly and is one of the most widely used testing methods. The aim of this research is to determine the resulting bearing capacity and determine the hard soil layers on the Padhang-Padhang campus of West Sulawesi University using the Cone Penetration Test (CPT) or Sondir field testing tool. The method used in this research is the literature study method and direct testing in the field. From the results of this test, the Cone Penetration Test (CPT) data from 1 test point was processed and analyzed using Microsoft Excel 2019 software. The results of data processing and analysis were the maximum cone pressure (qc) value and the maximum number of sticking resistances (JHP), namely 650 kg/cm at a depth of 12.60 meters and 2496.00 kg/cm² at a depth of 15.00 meters. The maximum friction ratio (Rf) of 0.11% is at a depth of 14.00 meters, while the maximum Sticking Resistance Pressure (fs) value of 110 kg/cm² is at a depth of 14.00 meters.
Analisis Kepadatan Lapangan Dengan Metode Sand Cone Pada Pembangunan Jalan Lingkar Utara Lamongan Bagas Dwi Putra W.; Muhammad Riski Faizal; Muhammad Ridho Hanafi; Surya Fadli Purwanto; Dika Ayu Safitri
Jurnal Kendali Teknik dan Sains Vol. 2 No. 2 (2024): April : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v2i2.3031

Abstract

The location of the road studied is the northern ring road which is still in the form of a compacted pavement layer. With this road, it can reduce traffic jams in the city and divert heavy vehicles. Field density analysis was carried out on the North Ring Road in Lamongan district using the Sand Cone method to obtain soil water content values ​​on the road. The work procedure carried out is determining the weight of the sand, the weight of the soil, the grade water, dry soil density, and field density. The testing point was carried out at 152 different points for every 25 meters, namely from STA 0+000 to STA 3+800. The results showed that the average soil water content was 19.0%, and the soil density was 96.98%. According to the requirements of SNI 03-2008-1992, the recommended soil density value is 95%. From the results of the tests that have been carried out it can be concluded that the density The soil in the field meets the specified soil density requirements because the average density in the field on road pavement is 96.98%.
Perancangan dan Penempatan Alat Pemadam Kebakaran Jenis Sprinkler Iqbal Hayes Gavrela; Aditya Firmansyah A. P; Krisna Adiarta H. K; Rama Noel Damita Simanungkalit; Dika Ayu Safitri
Jurnal Kendali Teknik dan Sains Vol. 2 No. 2 (2024): April : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v2i2.3033

Abstract

The fire suppression ability of this sprinkler installation compared to other fire extinguishing equipment has been proven to be more effective. Because the sprinkler system does not require an operator when operating, fires can be prevented earlier before causing greater losses. For this reason, the implementation of sprinkler systems in buildings is crucial. According to KEPMEN PU NO. 10/KPTS/2000, a building must have elements that can maintain structural stability to a certain level during a fire. This research was conducted directly in the field, and the necessary data was obtained independently through interviews with relevant parties. The author conducted research observations in the archive warehouse to obtain both primary and secondary data. Primary data included field documentation and calculations. Planning calculations were done directly by calculating the number of sprinklers, water requirements, and reservoirs to determine the precise needs. Based on the survey, it was found that the size of the archive warehouse is 48 x 48 m, totaling 2304 m2. The maximum distance between sprinklers used was 4.6 m. Therefore, the effective distance between sprinkler heads is 193 units. The result of the calculation for the water supply for the sprinkler system obtained 34,139.77 liters, with the total overall cost for the equipment and materials used being Rp. 63,121,925.74. Based on the data and calculation results regarding the planning and design of fire protection equipment in open active spaces adhering to the NFPA-13 Standard for the Year 2019, it is expected to provide comfort and safety against the threat of fire incidents.
Detail Engineering Design (DED) pada Struktur New Siloam Hospital Surabaya Mochamad Hafidh Masruri; Mohamad Iqbal Fanany; Muchammad Fachru Rizal; Denni Pramudia Pamungkas; Dika Ayu Safitri
Jurnal Kendali Teknik dan Sains Vol. 2 No. 2 (2024): April : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v2i2.3036

Abstract

The construction of health facilities is part of national development. Therefore, many health facility development projects, such as hospitals, continue to be carried out in various regions. One of them is the construction of the New Siloam Hospital in Surabaya. This article aims to understand the concept of detail engineering design on the building structure of New Siloam Hospital. Field surveys and data collection are the methods used to obtain information related to hospital construction projects. There are several differences between field data and work drawing data that has been created. Some of these differences include details on the reinforcement and casting volume. Therefore, it is necessary to carry out further evaluation of field data with work drawing data so that the project can proceed according to initial planning.
ANALISIS KERUSAKAN JALAN LOKAL PRIMER DI KECAMATAN BUDURAN KABUPATEN SIDOARJO MENGGUNAKAN METODE PAVEMENT CONDITION INDEX (PCI) Irvan Dwi Putra Yono; Gede Sarya; Dika Ayu Safitri
Journal of Scientech Research and Development Vol 6 No 1 (2024): JSRD, June 2024
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v6i1.334

Abstract

Jalan raya merupakan salah satu prasarana transportasi darat yang sangat penting dalam aspek kegiatan manusia. Kondisi jalan diharapkan dapat memberikan rasa aman dan nyaman bagi pengguna prasarana jalan raya. Kondisi jalan yang baik akan mempengaruhi mobiltas manusia dalam melakukan berbagai aktivitas sehingga diperlukan pemeliharaan jalan yang baik. Pemeliharaan jalan yang baik perlu data pendukung untuk memudahkan perencanaan, maka dari itu diperlukan data kerusakan jalan yang menginformasikan berat atau tidaknya kerusakan jalan pada suatu ruas jalan. Salah satu metode yang dapat membantu melakukan penilaian kondisi kerusakan jalan adalah metode Pavement Condition Index (PCI). metode ini relatif lebih mudah dilakukan, tidak membutuhkan alat berat, tidak mengganggu lalu lintas, dan waktu survei yang lebih fleksibel, selain itu dengan metode PCI ini memberikan suatu cara yang lebih detail daripada metode lain dalam pencatatan jenis serta tingkat keparahan kerusakan, jenis kerusakan dan satuan pengukuran. Yang digunakan dalam penelitian ini data survei kerusakan jalan yang telah dilakukan dengan deskriptif Kuantitatif. Hasil menunjukan bahwa dari 21 ruas jalan lokal primer Kecamatan Buduran Kabupaten sidoarjo dengan kondisi sempurna (excelent) sebanyak 4 ruas, dengan Kondisi Sangat Baik (Very Good) Sebanyak 7 ruas, dengan kondisi baik (Good) sebanyak 8 ruas, dan dengan kondisi sedang (Fair) sebanyak 2 ruas.
ANALISIS KINERJA SIMPANG TAK BERSINYAL DIRUAS JALAN RAYA JATI–PERUMAHAN KAHURIPAN KOTA SIDOARJO MENGGUNAKAN METODE MKJI 1997 M. Nilam Wildan Kafi; Nurani Hartatik; Dika Ayu Safitri
Journal of Scientech Research and Development Vol 6 No 1 (2024): JSRD, June 2024
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v6i1.336

Abstract

Seiring dengan perkembangan zaman kebutuhan akan transportasi semakin meningkat baik digunakan sebagai kendaraan umum maupun alat pengangkut barang. Kota Sidoarjo sebagai salah satu kota besar di Jawa Timur memiliki masalah dalam hal pertumbuhan lalu lintas yakni sering terjadi kemacetan. Hal ini terjadi disebagian ruas jalan di daerah Sidoarjo seperti di jalan daerah Waruh yang sering terjadi kemacetan sehingga menyebabkan meningkatnya waktu perjalanan pada jam sibuk. Tidak hanya jalan Waru yang mengalami kemacetan tetapi juga pada simpang di ruas jalan Raya Jati Sidoarjo – Perumahan Kahuripan. Maka dari itu perlu dilakukannya analisis simpang tak bersinyal untuk mengetahui kinerja pada simpang tak bersinyal ini. Analisa data dilakukan dengan menggunakan metode MKJI 1997, penelitian ini dilakukan selama 1 minggu. Berdasarkan survei yang telah dilakukan data yang didapatkan adalah volume lalu lintas, arah pergerakan dan jenis kendaraan. Data yang digunakan adalah data pada hari jumat soreh dengan derajat kejenuhan sebesar 1,2. Hasil dari penelitian didapat volume lalu lintas tertinggi pada simpang tak bersinyal diruas Jalan Raya Jati – Perumahan Kahuripan terjadi pada hari jumat sore sebesar 3511 smp/jam. Kapasitasnya sebesar 2810 smp/jam dan kinerja simpang tak bersinyalnya dengan tipe simpang 322 puncak kemacetannya terjadi pada hari Jumat sore, derajat kejenuhan 1,2 dan tundaan sebesar 60 detik. Seiring bertambahnya volume kendaraan perlu adanya alternatif dan rekayasa lalu lintas yang tepat dalam menangani kondisi pada persimpangan tak bersinyal diruas Jalan Raya Jati – Perumahan Kahuripan. perencanaan ulang untuk memperbaiki kapasitas dan kinerja simpang tak bersinyal di lokasi penelitian, melakukan pelebaran geometrik jalan serta melakukan perubahan lajur dan juga pemasangan rambu lalu lintas agar dapat memperbaiki tingkat pelanyanan jalan.
ANALISIS KINERJA SIMPANG BERSINYAL (STUDI KASUS JL. MANYAR KERTOARJO - JL. KERTAJAYA – JL. RAYA MENUR, KOTA SURABAYA) Pramu, Yusuf Fredrik; Nurani Hartatik; Dika Ayu Safitri
Journal of Scientech Research and Development Vol 6 No 1 (2024): JSRD, June 2024
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v6i1.362

Abstract

Kota Surabaya adalah Ibukota dari Provinsi Jawa Timur yang merupakan salah satu kota metropolitan dengan tingkat jumlah penduduk terbesar di Indonesia sehingga sering terjadi kemacetan pada arus lalu lintas. Salah satunya terjadi kemacetan pada persimpangan antara pertemuan ruas Jalan Raya Menur – Jalan Raya Manyar Kertoarjo – Jalan Raya Kertajaya, Kota Surabaya. Oleh karena itu, perlu dilakukan analisis terkait persimpangan ini agar dapat mengetahui kelayakan sebuah simpang bersinyal dengan metode Manual Kapasitas Jalan Indonesia (MKJI 1997). Penelitian ini dilaksanakan selama seminggu dengan waktu pengamatan seharinya ada tiga fase jam puncak (fase pagi, siang, dan sore). Dari hasil penelitian yang dilakukan menunjukkan nilai volume arus lalu lintas tertinggi terdapat pada hari senin jam puncak sore dengan nilai sebesar 5105 smp/jam. Sedangkan, nilai derajat kejenuhan (DS) tertinggi memiliki nilai sebesar 0,94 yang terdapat di jam puncak sore pada hari senin, selasa, rabu, kamis, dan jumat serta jam puncak pagi pada hari selasa dan rabu. Hal tersebut menunjukkan bahwa kinerja simpang tergolong buruk karena nilai derajat kejenuhan (DS) melewati angka 0,75.