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All Journal VALENSI MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain Briliant: Jurnal Riset dan Konseptual Teras Jurnal Science and Physics Education Journal (SPEJ) Pendas : Jurnah Ilmiah Pendidikan Dasar Elipsoida : Jurnal Geodesi dan Geomatika EKOLOGIA : Jurnal Ilmiah Ilmu Dasar dan Lingkungan Hidup TAPAK (Teknologi Aplikasi Konstruksi) : Jurnal Program Studi Teknik Sipil Riyadhoh : Jurnal Pendidikan Olahraga Journal of Engineering and Scientific Research (JESR) Jurnal Teknik Industri Terintegrasi (JUTIN) Journal Coaching Education Sports Journal of Infrastructural in Civil Engineering (JICE) Chlorophyl: Jurnal Ilmu-Ilmu Pertanian Teknika Sains : Jurnal Ilmu Teknik Warta AKAB PROFICIO: Jurnal Pengabdian Masyarakat Unnes Journal of Mathematics Education Indonesian Journal of Research and Educational Review (IJRER) e-SPORT: Jurnal Pendidikan Jasmani, Kesehatan dan Rekreasi Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) Jurnal Teknik Sumber Daya Air SENTRI: Jurnal Riset Ilmiah Informasi dan Promosi Kesehatan JPM-AKA Rona Teknik Pertanian PEDAMAS (Pengabdian Kepada Masyarakat) Jurnal Pengembangan Ilmu dan Praktik Kesehatan JSEHT Jurnal Meteorologi dan Geofisika Journal of Plano Studies International Journal of Science, Technology and Applications J-Sil (Jurnal Teknik Sipil dan Lingkungan) Journal Of Biology Education Research (JBER) Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Nemui Nyimah Datum: Journal of Geodesy and Geomatics SPORTIVE: Journal Of Physical Education, Sport and Recreation
Ahmad Zakaria
Fakultas Matematika dan Ilmu Pengetahuan Alam, Departemen Kimia, Institut Pertanian Bogor
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Analisis Perbandingan Data Pemodelan Pasang Surut BIG Dengan Data Pengukuran Pasang Surut UHSLC Pada Stasiun Sadeng Ayuningsih, Titik; Zakaria, Ahmad; Kusumastuti, Dyah Indriana
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 8 No. 3 (2020): Edisi September 2020
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v8i3.1481

Abstract

Penelitian ini bertujuan menganalisis karakteristik pasang surut dan membandingkan data peramalan pasang surut dengan data terukur. Data yang digunakan merupakan data pasang surut jam-jaman periode tahun 2011-2015 yang diunduh dari website BIG dan UHSLC pada wilayah stasiun Sadeng, Provinsi Daerah Istimewa Yogyakarta. Data yang digunakan untuk setiap analisis adalah data 30 harian atau 720 jam. Hasil perbandingan dalam penelitian ini diperoleh berdasarkan analisis data elevasi langsung dan besaran nilai amplitudonya. Untuk besaran nilai amplitudo komponen pasang surut didapatkan menggunakan program ANFOR yang mengaplikasikan metode Least Square. Berdasarkan pada hasil penelitian dapat diketahui bahwa tipe pasang surut yang terjadi pada stasiun Sadeng tergolong pasang surut campuran condong harian ganda. Berdasarkan data elevasi langsungnya, nilai kesalahan relatif dari perbandingan kedua sumber data sebesar 5,7748 % dengan selisih elevasi rata-rata 15,99 cm. Nilai koefisien korelasi langsung berdasarkan elevasinya sebesar 0,9838. Sedangkan berdasarkan perbandingan amplitudo komponen pasang surutnya didapatkan nilai kesalahan relatif yang bervariasi sebagai berikut: K1 sebesar 7,8981 %, O1 sebesar 3,8318 %, P1 sebesar 23,2832 %, M2 sebesar 1,8287 %, S2 sebesar 6,0048 %, N2 sebesar 5,8659 %, K2 sebesar 15,7505 %, M4 sebesar 95,0682 % dan MS4 sebesar 94,9316 %. Dari analisa amplitudo data peramalan pasang surut diperoleh korelasi sebesar 0,9977.
Evaluasi Data Curah Hujan BMKG dengan TRMM (Studi Kasus Stasiun BMKG di Provinsi Kepulauan Bangka Belitung) Kurniyawan, Ikhfan; Zakaria, Ahmad; Wahono, Endro Prasetyo; Angin, Geleng Perangin
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 8 No. 4 (2020): Edisi Desember 2020
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v8i4.1528

Abstract

Indonesia merupakan negara dengan iklim tropis yang memiliki dua musim, musim kemarau dan musim hujan. Pengukuran curah hujan di Indonesia dilakukan oleh beberapa badan, salah satu diantaranya adalah Badan Meteorologi Klimatologi dan Geofisika (BMKG) dan juga TRMM NASA. Tujuan penelitian ini adalah untuk menghitung nilai korelasi data curah hujan antara TRMM dan BMKG dengan mencari persamaan hubungan antar data dan menganalisis data curah hujannya. Data yang digunakan merupakan curah hujan harian dari tahun 1998-2012. Data dianalisis dalam bentuk data 7 harian, bulanan, dan tahunan. Berdasarkan hasil analisis didapatkan jika data curah hujan yang diukur oleh TRMM memiliki kesamaan pola distribusi temporal curah hujan yang diukur oleh BMKG. Nilai korelasi antara data TRMM dan BMKG menunjukkan hasil yang lebih baik jika menggunakan data bulanan, dimana nilai korelasi yang terbesar dari ketiga stasiun adalah,7281 di Stasiun Meteorologi H. Asan Hananjoedin dan yang terkecil adalah 0,5829 di Stasiun Meteorologi Depati Amir.
Analisis Stabilitas Lereng Dengan Variasi Lapisan Tanah Berbeda Yang Di Pengaruhi Nilai Kohesi Tanah Atmoko, Fajar Destri; Afriani, Lusmeilia; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 8 No. 4 (2020): Edisi Desember 2020
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v8i4.1531

Abstract

Natural disasters often occur in hilly areas in Lampung Province, namely landslides. Slides thatoccur due to increased soil pore water pressure. The GeoStudio SLOPE / W 2012 program cananalyze slope stability which can be modeled according to the original conditions in the field andcan determine the value of the slope safety factor. In this study, there are four cross sections ofslopes with four different layers with an angle of 30 ° each, and following a maximum height of 18meters.The results of the analysis of the GeoStudio Slope / W 2012 program using 4 methods of analysis,namely Ordinary, Bishop, Janbu and Morgenstern Price, obtained different safe factor values, theMorgenstern Price method and the Bishop method have a safe factor value that tends to be thesame and greater than the Ordinary method and the method. Janbu tends to have a smaller safetyfactor.The shape of the cross section of the slope in the 5 soil layers is the most safe factor, different soillayers, it can be seen that each layer of soil has different safety factors but does not differ muchfrom the others.
Komparasi Kadar Daya Dukung Tanah Berbutir Halus Berdasarkan Uji CBR Menggunakan Alat Tekan Modifikasi dan Modified Proctor Damayanti, Amelia Nurul; Adha, Idharmahadi; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 8 No. 4 (2020): Edisi Desember 2020
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v8i4.1635

Abstract

The importance of soil as construction material needs to be considered carefully. With various soil conditions, a physical test is required to discover the characteristics of the soil and California Bearing Ratio (CBR) test in a laboratory to determine the bearing capacity of the basic land (subgrade). This research was conducted to assess the suitability of the CBR test value with two different compaction tools. The results of this study showed that the soils were classified into A-6 clay soil type. On the modified proctor compaction test, the maximum weight volume (γdmaks) was 1,70 gr/cm3, while the compaction with modified press tool obtained 1,75 gr/cm3. Based on the results of the values obtained from CBR standard test is 11,5% and 1,32% for the soaked sample .While the CBR value without immersion with modified press tool are 7,7% for 3 MPa, 16,2% for 6 MPa, 19,5% for 9 MPa, 20,5% for 12 Mpa. For the soaked samples are 1,53% for 3 Mpa, 2,7% for 6 Mpa, 3,56% for 9 Mpa, and 4,33% for 12 Mpa. In conclusion, the CBR value escalation is higher when using the modified pressure tool compared with the CBR standard method.
Studi Long Storage Sebagai Upaya Mengatasi Kekeringan Di Daerah Cinta Manis Sumatera Selatan Trisdiana, Fitri; Arifaini, Nur; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 1 (2021): Edisi Maret 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i1.1641

Abstract

This study aims to conduct a long storage study as an effort to overcome drought in the Cinta Manis area, South Sumatra. The research data used is the maximum daily rainfall data from 2009 - 2018 which was obtained from the Palembang Climatological Rain Station. From the research results obtained hydrological analysis data and hydraulic analysis. For hydrological analysis, statistical parameter methods are used to determine the planned rainfall. The results of this method were analyzed in harmony with the Chi Square test and the Smirnov-Kolmogorov test and the distribution type used was the Log Pearson III distribution. To calculate the water holding capacity in long storage, the cumulative storage volume analysis is used to analyze the volume that is bounded by a certain contour, with a simple formula published by the Manual of Sediment Control Dam Construction of the Ministry of Public Works. Based on the research results, it can be seen that the potential for long storage storage obtained from rainwater is 95771.18 m³ and water storage capacity in long storage which is 137334.43 m³ is able to serve 40.87 ha. The water storage capacity in long storage is able to irrigate the sugarcane fields in Rayon 1B and as a storage place for water reserves so that there is no drought when the dry season arrives.Keywords: long storage, rain, analysis
Comparative Analysis of Measured Tidal Data with Tidal Data from Forecasting (Case Study of Tanjung Priok Tidal Station) Dinaryoko, Arif; Zakaria, Ahmad; Tugiono, Subuh
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 1 (2021): Edisi Maret 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i1.1693

Abstract

AbstractThis research was conducted to study the tidal characteristics. The data used in this study are the hourly tide data measured in the field and the tidal data from the BIG with data length from 1985 to 1989 at the Tanjung Priok tidal station, Jakarta Province, Indonesia. This modeling is carried out using a data length of 30 days for a data term of 720. By using the observational data and applying it in the Anfor program which uses the least squares method, produces a tidal periodic model that is obtained using 9 tidal harmonic components. From the results of modeling and measured data it can be seen the correlation coefficient. Based on these results, it can be concluded that the measured tide data components with the BIG tide data components are similar. The average correlation coefficient between the two data sets was 0.9644. From this research it can be seen that the value of the tidal data is said to be very good. Keywords: daily tides, correlation coefficient
Analisis Pemodelan Numerik Redaman Breakwater Tenggelam Tipe Berlubang dan Tidak Berlubang Menggunakan Sigerd Lukitawati, Annika; Zakaria, Ahmad; Tugiono, Subuh; Winarno, Dwijoko
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 1 (2021): Edisi Maret 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i1.1714

Abstract

Continuous waves crashing into the coastal area can cause abrasion on the coast and damage facilities and settlements in the area. Therefore, a coastal protection building is needed to reduce wave energy before arriving at the beach such as a breakwater. To design a breakwater it is necessary to pay attention to wave deformation, one of which is wave diffraction. Where the wave when obstructed by an obstacle will bend around the end of the obstacle and enter the protected area behind it. The complex phenomena of nature are described in terms of equations, but they are difficult to solve analytically. So in this study solved numerically with the help of a computer with 2D wave simulation software based on the principle of the hyperbolic equation propagation model. Then get the results in the form of diffraction coefficient values that are close to the results obtained in the physical model research that has been carried out. Changes in wave height occur after passing through the breakwater which indicates a change in energy from before and after passing through the breakwater.
Analisis Kinerja Redaman Gelombang pada Breakwater Tenggelam Tipe Berlubang Dengan Pemodelan Fisik 2D Andika, Ivana Aprili; Tugiono, Subuh; Zakaria, Ahmad; Wahono, Endro P.
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 1 (2021): Edisi Maret 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i1.1722

Abstract

Loss of land due to coastal erosion that occurs naturally by wave abrasion. Therefore, to protect the coast from erosion or other matters, a breakwater is needed which destroys the energy of the waves before reaching the shore. This is the background of the author in taking the title of the thesis about the Performance Analysis of Wave Attenuation in the Hollow Type Breakwater Submerged Type 2-D Physical Modeling. The variables used in this study were incident wave height (Ho), calm water level (ds), and breakwater type. The results of this study indicate that the damping coefficient (Cr) was obtained using a sinking breakwater without a hole with a calm water level (ds) of 2 cm of 0.479 which is the most effective damping produced in an experiment using a breakwater that is free from calm water surface (ds). 2 cm. The wave attenuation obtained from the wave defraction test using 2 types of breakwaters resulted that the breakwater without the damping hole was greater than using a perforated breakwater.
Penggunaan Pasir Seragam pada Perbaikan Subgrade Ditinjau Terhadap Tebal Perkerasan Jalan (Swelling Potential dan Non Swelling Potential) Pratiwi, Ayu Ning Trias; Iswan, Iswan; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1761

Abstract

Subgradeis the most important part to be used as the focus and support of all construction loads that are on it. If the subgrade is clay soil that has a low carrying capacity and is very sensitive to moisture content, then nearby buildings will often suffer damage, such as land located in Marga Kaya Village. In this study using the method of mixing native soil with stabilization material in the form of uniform sand derived from Mount Sugih with a mixture variation of 5%, 10% and 15% of the dry weight of the soil. The test results showed cbr unsoaked and soaked maximum occurred in sand mixture 15% with CBR Unsoaked value of 13.2% and CBR Soaked with a value of 2.9%. Road pavement thickness on CBR Unsoaked and Soaked efficiently on sand mixture 15% with thickness D1 = 2.75 cm, D2 = 20 and D3 = 10 cm, and CBR Soaked with thickness D1 = 8.75 cm, D2 = 20 cm and D3 = 10 cm. The value of swelling decreased from 11.4% to 7.4% in the addition of uniform sand by 15%. DDT value is influenced by cbr value the greater cbr value then DDT will increase.
The influence of el nino and la nina on rainfall data of east lampung regency, lampung province Gani, Rama Dian; Zakaria, Ahmad; Kusumastuti, Dyah Indriana
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 9 No. 2 (2021): Edisi Juni 2021
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v9i2.1763

Abstract

This research was conducted to determine the impact of the areas where El Nino and La Nina were the most dominant. The data used in this study are daily rainfall data in 5 rain stations located in East Lampung. Data length from 1989 to 2018 at each station, this data was taken from the Mesuji River Basin - Sekampung (BBWSMS). This modeling is carried out using a data length of 30 years for a data term of 10957.By using observational data and applying it in 2 programs, namely the Fast Fourier Transform (FFT) and the Lomb Periodogram, it produces values that can be graphed for the spectrum of each of the 5 rain station areas, namely Jepara Lake, Labuhan Ratu, Taman Negeri, Kota Raman and Sri Gading. From the results, it can be seen which areas are predominantly affected by El Nino and La Nina. Based on the results of the two programs, both show that the rain station in the Lake Jepara area experiences more dominant El Nino and La Nina influences. Keywords: El Nino, La Nina, rain station, rainfall, Fast Fourier Transform, Lomb Periodogram
Co-Authors Abyuliani, Alza Achmad Karim adama, riri arinda Afifah, Mar'atul Afriami, Lusmeilia Agatha, Muhammad Naufal Agustriyanto, Dono Ahmad Herison Ahmad Tusi Ahsan, Fathan Naufal Aji Saputra, Aji Aji, Badruzzaman Al Rasyid, Burhan Najib Amanda, Tiara Maelta Amidi Amidi, Amidi Amri, Resica Permata Andika, Ivana Aprili Angelina Angelina Anggraini , Melisa anggraini, yeshe Angin, Geleng Perangin Ardian, Riko Berli Arfanda, Poppy Elisano Arie Pratama Putra Arief, Farah Diba Arifaini , Nur Arizona, Bramesvara Armijon . Ashruri Ashruri, Ashruri Asrorudin, Udin Atika Sari Atmoko, Fajar Destri Aynuddin, . Aynuddin, Aynuddin Ayu Kurniasih, Ayu Ayuningsih, Titik Cahyo, Febriansyah Dwi Cesar, Irvan Tegar Chairil Anwar Citra Dewi Damayanti, Amelia Nurul Dian Kusumaningsih Dian Pratiwi Didik Didik Dinaryoko, Arif Diwantari, Windy Putri Djanis, Ratnawati L. Djanis, Ratnawati Lilasari Djasmasari, Wittri Dwi Arnanda Putra, Novindio Dwi Joko Winarno Dyah Indriana K Dyah Indriana Kusumastuti Efendi, Muhamad Masjun Elvida, Maharani Endang Sri Lestari Endro Prasetyo Wahono Fachrurrazie, . Fachrurrazie, Fachrurrazie Fadela, Dian Mira Fathony, Awal Rifan Fatoni, Fatoni Fatria, Akhmad Ridho Fatria, Akhmad Ridho Fikri, Modh. Haikal Finanda, Reysa Fitria, Mizha Nur Fridayanto, Syahlan Naufal Gani, Rama Dian Gatot Eko Susilo Gultom, Winda Maria Rebecca Habib Algifari Hadi, Yohannes Martono Handayani, Agustia Handayani, Esty Hardi, Alif Aryadi Hartantio, Fajar Hartoto, Dwi Nanda Putra hasyimzoem, Edwin Faisol Hayat, Mohammad Haz, Arzuu Abnu Haziman, Muhammad Luthfan Herawati Herawati Herdiana, I Komang Tri Herizon, Ahmad Ians Aprilo Ichsani, Muhammad Desyan Idharmahadi Adha Imran, Fadli Indarto, Asyidika Vito Indriana K, Dyah Irvani, Asep Irvan Iskandar, Rina Iswan Iswan Iswan, I Jalal, Muhammad Agung Wijdan Jamaludin HN, . Jauhari Arifin Jaya, Redhinansyah Kurniawan Jerfikanasa Murda, Gung Bagus Joko, Dwi Karim, Achmad Kholiq, Muhammad Nur Kristianto Usman kuncoro, wahyu hadi Kurniawan, Deri Rahli Kurniawan, Panca Kurniawan, Rizqi Kurniyawan, Ikhfan Kusanti, Nency Dwi Kusumastuti, Dyah Kusumastuti, Dyah I. kuswadi, didit kuswadi Laksmana, M. Bima Lepiana, Tenti Lukitawati, Annika Lusmeilia Afriani M Imran Hasanuddin M Rizky Ismail M. Said Zainuddin Manurung, Lodewick Mapiliandari, Inda Mappaompo, M. Adam Mariyanto Mariyanto Masdar Helmi MMSI Irfan ,S. Kom Muhammad Fadli Mukhlisah Nawawi, M Lucky Apriansyah Niken, Chatarina Ningtyas, Widya Nurcahya Novianti, Tika Christy Nugraha , Billy Nugraheni, Melly Nur Arifaini Nurdiani Nurdiani, Nurdiani Nurdiani, . Ofik Taufik P, Ofik Ofik Taufik Purwadi, Ofik Taufik Oktiani, Asri Pelawi, Rinaldi Peranginangin, Imanuel Perdana, Damar Adi PERMADI, I GUSTI AGUNG DIDIT EKA Persada, Citra Phohan, Phohan Pradipta, Adya Rizky Prasetio, Rizki Lazuardi Prasetyo, Agus Ari Pratiwi, Ayu Ning Trias Prawaka, Fanny Prawaka, Muhammad Hendro Purna, Bagus Mustofa Purwadi , Ofik Taupik Purwadi, Ofik Purwadi, Ofik Taupik Purwadi, Ofik Toupik Purwadi, Opik Taufik Qur'ani, Mutiara Nurul Rachmanda, Farhan Rachmi, Silvia Rachmy, Silvia Rahayu Sulistyorini Randy Setiawan, Randy Razak, Risdha Sagita Restika Putri Retno Farhana Nurulita Rina Indriani Rinaldi, M. Fahmi Rizky Al Mufarid, Andi Muhammad Romdani, Yuda Romi Fadly Rosalina Rosalina Rosalina, . Salsabila, Adira Sampurna, Sindu Abadi Saputra, Datra Peta Saputra, Eko Adi Saputra, Fajar Ilham Saputro, Rifki Ananda Sari, Dwi Winda Sari, Okta Mulya Sasongko, Respati Anton Sauri, Sopian Septian, Rio Dwi Septiansari, Annisa Putri Dwi Setia, Vika Setyanto Setyanto Setyanugraha, Tegar Sitanaya, Brigitha Cindy Siti Nurdianti Muhajir Siti Nurul Khotimah Siti Nurul Khotimah Slamet Riyadi Styani, Erna Subuh Tugiono, Subuh Suharni Suharni Sulistiyorini, Rahayu Sumarno, Ari Pitoyo Sumharni, Sumiharni Sumiharni Sumiharni Suyadi Suyadi Syah, Aminudin Syahruli, Firman Tambunan, Jenny Anna Margaretha Taufik P, Ofik Tomi, Muhammad Tridawati, Anggun Trisdiana, Fitri Trisnar Adi Prabowo Trisno Imany, Tri Subakti Tuhu Pangestu, Ibnu Umar, Rizki Prinanda Usman, Arifuddin W, Endro W, Endro Prasetyo Wahono, Endro Wahono, Endro Praseyto Wardhani, Puspita Sri Ayu Welly, Margareta widarsono, eko Widya Anggraeni, Widya Wijaya, Riki Chandra Winarno, Dwijoko Yacub, Vanita Kesumawati Yandriguna, Medi Yanti, Cristi Yohanes Martono Hadi Yuda Romdania yulianto, alim Yusma Sari, Nia Hana Zainuddin, M Said