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All Journal Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain Khasanah Ilmu - Jurnal Pariwisata Dan Budaya Spatial : Wahana Komunikasi dan Informasi Geografi Journal of Innovation and Technology Warta AKAB Cendekia: Jurnal Ilmu Sosial, Bahasa dan Pendidikan E-JRM Al-Khidmah: Jurnal Pengabdian Kepada Masyarakat Kegiatan Positif : Jurnal Hasil Karya Pengabdian Masyarakat Jurnal Ilmiah Research Student Indonesian Journal of Environment and Sustainability Issues Menulis: Jurnal Penelitian Nusantara
Ahmad Zakaria
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Religion Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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The effect of El Nino and La nina on the rain data of Lampung Barat Regency, Lampung Province Fajar Hartantio; Ahmad Zakaria; Dyah Kusumastuti
Jurnal Rekayasa Sipil dan Desain Vol 9, No 3 (2021): Edisi September 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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The purpose of this research to analyze and determine dominant impact area due to the effect of El Nino and La Nina on 6 rainfall station in west Lampung Regency, Lampung Province. This study also compred between Fast Fourier Transform (FFT) methods, and Lomb Periodogram methods. This study using rainfall data from 1998 to 2019 taken from Balai Besar Wilayah Sungai Mesuji – Sekampung (BBWSMS). According on comparison result, it is known that both methods indicate that Air Hitam Rainfall Station experience the effect of El Nino and La Nina more dominantly than the others, with the looping period of 3,9165 years from Lomb Periodogram method and 3,7381 years from (FFT) Method. It is also known that Lomb Periodogram Method has a better accuracy than (FFT) method. This is because Lomb Periodogram can read the length of data more accurately than Fast Fourier Transform (FFT) method.  Keywords: El Nino, La Nina, rain station, rainfall, Fast Fourier Transform, Lomb Periodogram
The Effect of Soil Particles Diameter by Passing The Sieve Analysis to Soil Compaction Using The Standard Method Adira Salsabila; Idharmahadi Adha; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 7, No 2 (2019): Edisi Juni 2019
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Improving the Infrastructure development needs the soil that capable to support the load. It because soil is a material that major the role to support every construction. To identify a good soil is by doing physical and mechanical soil test. Soil compaction is process of increasing the soil density by reducing the particles proximity so it can reduce the air volume. Soil type is influencing to the maximum dry volume weight and optimum water content of that soil. Based on the soil type, compaction is divided into four types. In this research is using two types of compactions that are type A and Type C with purpose to find out the effect of soil particles diameter by passing sieve analysis to soil compaction using standard method.Compaction is done based on blow method and pressure method. In pressure method is using modification compaction tool with 5 Mpa, 10 Mpa, and 15 Mpa pressures.The result of this research is the blow method compaction type A has a higher water content than type C, but the value of maximum dry volume weight Type C higher than type A.  In pressure method it can be concluded that as the higher pressure so the water content and the maximum dry volume weight are also getting higher.Keyword:Soil Particles, Standard Method of Compaction, Blow Method and Pressure Method Compaction
Analisis Kedalaman Gerusan Lokal (Local Scouring) di Hilir Bangunan pelimpah (Stepped Modified Spillway) dengan Model Fisik 2D wahyu hadi kuncoro; Endro Prasetyo Wahono; Ahmad Zakaria; Dyah Indriana Kusumastuti
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
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Spillway is a hydraulic structure whose existence is very important because it is built to release excess water or flood discharge that cannot be accommodated in the dam. The hydraulics analysis of this study used a spillway design (Stepped modified Spillway) with a 2-D physical model and the sediment used was sand with a uniform diameter of 1.8 mm or passed sieve no. 16. This research was carried out 5 times for every 25 minutes of upstream water level observations.In the Stepped spillway spillway the maximum scour (dsmax) occurs at an upstream height (H0) of 3 cm of 0.125 m with an Lds of 0.09 m from the downstream of the spillway. Meanwhile, for the Stepped Modified Spillway spillway, the maximum scour (dsmax) occurs at an upstream height ( H0) 3 cm is 0.076 m with Lds of 0.221 m. This shows that the greater the flow rate, the greater the depth of scour that occurs. So it can be concluded that the Lacey method is the closest to the laboratory results. This is because a balance has been achieved. The deeper the local scour that occurs, the more volume of sediment carried downstream of the weir.Keywords: Stepped and stepped modified spillway, local scour, sediment.
Analysis of Slope Stability and Handling Methods on the Sand Clay (In Case : Sta 208+00 Double Track Train Martapura – Baturaja) Fadli Imran; Lusmeilia Afriani; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 8, No 1 (2020): Edisi Maret 2020
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There are several factors that effect the level security of a slope. Such as the condition of a slope with large loads, steep slope and heavy rain condition. The landslide and slope would often occurs on some double track lines on Martapura – Baturaja train because of this things. Therefor, the reinforcement is needed so that the slope is more stable around the slope. The results of physical and mechanical properties of the soil are based on the results of laboratory tests and research in the field. so the PLAXIS program was used in analyzing the stability of the existing slope based on the data. From the results of the program calculation shows that the condition of the slope is not stable. because the safety value indicates 0,89 for saturated conditions and 0,67 for dry conditions and 0,91 for partially saturated conditions. Furthermore, slope stability analysis who was reinforced by a combination of soil retaining wall and borepile. there has been an increase in safety value of 1,30 for saturated conditions, 1,66 for dry conditions and 1,65 for partially saturated conditions. This shows that the slope is stable and the reinforcement design is safe and able to withstand landslides. Keywords : Analysis of Slope On Sandy Clay
Analisis Perbandingan Data Pemodelan Pasang Surut BIG Dengan Data Pengukuran Pasang Surut UHSLC Pada Stasiun Sadeng Titik Ayuningsih; Ahmad Zakaria; Dyah Indriana Kusumastuti
Jurnal Rekayasa Sipil dan Desain Vol 8, No 3 (2020): Edisi September 2020
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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.
Analisis Harga Satuan Pekerjaan Jalan dan Jembatan Menggunakan Program Lazarus (studi kasus devisi 3, 5, 6, & 7) Tri Subakti Trisno Imany; Yohannes Martono Hadi; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 4, No 4 (2016): Edisi Desember 2016
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In the activity construction work must be would related to the cost. Someone who estimate the budget construction cost is called estimator. An estimate of the cost was called unit price analysis of work. Most of unit price analysis still was counted manually , but if seen from various points of view , calculations conducted in the manual still cannot meet its demands availability of information a quick and accurate. Therefore needs to get a program automatically for can count quickly unit price analysis.To observe a unit price of work so fast and accurated can be making an application analysis using the lazarus and than becomparations with the method of analysis issued by ministry of public worksThe result of making program unit price analysis of work of using lazarus is tested and validated by calculation use secondary data issued by ministry of public works. By using this program the calculations be more effective when compared with calculate by hand. Keywords: Unit price analysis, Lazarus
Evaluasi Stabilitas Breakwater pada Kecamatan Panjang Rizqi Kurniawan; Subuh Tugiono; Endro Prasetyo Wahono; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
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Abstract The coast will be easily damaged due to large waves, causing damage to the area around the coastal area which is densely populated with various activities, namely Pantai Kecamatan Panjang, among others as ports, settlements, industry, trade, tourism and fishing activities. With so many activities, it should be accompanied by development that prioritizes conservation aspects to reduce the impact of environmental degradation. One of the efforts to overcome the impact of its degradation is to make a breakwater. This study aims to assess and study the failure of the protected layer unit at the breakwater on the coast of Kecamatan Panjang, so testing the stability of the protected layer using a physical model was carried out at the Hydraulics Laboratory of the University of Lampung using an experimental method. The results showed that the level of breakwater damage was 0% at 4,47 cm HHWL position with a plan wave height of 4 cm. So, the crushed rock will work well to protect the breakwater. Key words: Breakwater, Armor Units, Physical Model, Stability
Uji Pengaruh Kemiringan dan Tipe Pijakan (Tangga Sekat dan Vertical Pool Passes) pada Dasar Fishway terhadap Rasio Perpindahan Ikan Sidat (Anguilla bicolor, sp) Nency Dwi Kusanti; Endro P Wahono; Dyah Indriana Kusumastuti; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 9, No 4 (2021): Edisi Desember 2021
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Bendung merupakan suatu bangunan sungai yang mempunyai peranan penting bagi kehidupan. Dalam pembangunan suatu bendung, harus memperhatikan keseimbangan ekosistem yang ada agar ekosistem tetap terjaga, salah satunya dengan cara membangun bangunan pelengkap sungai berupa tangga ikan (fishway). Untuk mengetahui efisiensi bentuk fishway yang dapat dibangun, pada penelitian ini dilakukan percobaan dengan menggunakan ikan sidat (Anguilla bicolor, sp) yang kemudian akan dilakukan pengujian pada alat fishway dengan kemiringan dan dua tipe pijakan yang berbeda, yaitu tangga sekat dan vertical pool passes yang kemudian akan dibandingkan dengan tipe pijakan pipa PVC yang telah dilakukan pada penelitian sebelumnya. Dari penelitian yang telah dilakukan, terjadi penurunan rasio aktivitas seiring bertambahnya sudut kemiringan pada fishway dan diperoleh nilai rasio tertinggi pada percobaan dengan sudut kemiringan 25° dengan rasio sebesar 4,40 untuk tipe pijakan tangga sekat dan 3,72 untuk tipe pijakan vertical pool passes. Sedangkan jika dibandingkan antara tipe pijakan tangga sekat, vertical pool passes dan pipa PVC diperoleh nilai rasio tertinggi yaitu pada penggunaan pipa PVC 0,5 inch dengan rasio sebesar 4,50.
Studi Pemodelan Stokastik Curah Hujan Harian di Stasiun Kota Metro Bramesvara Arizona; Ahmad Zakaria; Ofik Toupik Purwadi
Jurnal Rekayasa Sipil dan Desain Vol 3, No 1 (2015): Edisi Maret 2015
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The purpose of this research is to study the daily rainfall data series The data used daily rainfall data with data length in 1986-2013 at 3 stations namely Metro station R-206, R-107 Raman Dam, and Argoguruh R-106 are located in Metro City and the surrounding areas.The modeling is done using the data length of 512 days. By using the frequency of rainfall data obtained then apply the Fourier equation and the method of least squares is then generated model of periodic daily rainfall. Rainfall stochastic model of rainfall data is assumed as the difference between precipitation data with periodic rainfall models using the 253 components. Based on data from a series of stochastic, stochastic component is computed using autoregressive models approach. Stochastic model presented by using the autoregressive model of order three. Validation stochastic series, between the data and the model is done by calculating the correlation coefficient.Based on these results we can conclude synthetic daily rainfall data time series obtained very significant approach measurable rainfall. With the value of the average correlation coefficient stochastic model is 0.9981.keywords: daily rainfall, autoregresif models, stochastic component.
Studi Long Storage Sebagai Upaya Mengatasi Kekeringan Di Daerah Cinta Manis Sumatera Selatan Fitri Trisdiana; Nur Arifaini; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 9, No 1 (2021): Edisi Maret 2021
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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
Co-Authors . Sumiharni Adira Salsabila Agus Ari Prasetyo Ahmad Herison Ahmad Labib Husain AHMAD MUZAKKI Al Arif Febrian Amanda Urmilatus Sifana Amelia Nurul Damayanti Anggun Dwi Cahyani Fitri Annika Lukitawati Annisa Delia Putri Annisa Putri Dwi Septiansari Ardelia Zahirah Rahman Arif Dinaryoko Arya Jaya Sumbahan Ashfiya Salsabila Ashruri Ashruri Ashruri Aynuddin Aynuddin Ayu Ning Trias Pratiwi Badruzzaman Aji Bagus Mustofa Purna Bramesvara Arizona Brigitha Cindy Sitanaya Ciek Julyati Hisyam Damar Adi Perdana Datra Peta Saputra Dian Mira Fadela didit kuswadi kuswadi Dwi Joko Winarno Dwi Winda Sari Dwijoko Winarno Dyah Indriana Kusumastuti Dyah Kusumastuti Eko Adi Saputra Endro P Wahyono Endro Prasetyo Wahono Erizal Tanjung Esty Handayani Fachrurrazie Fachrurrazie Fadli Imran Faishal Muhammad Hanun Faizah Fajar Destri Atmoko Fajar Hartantio Fanny Prawaka Farah Ahista Rahma Fitri Trisdiana Fuad Zikri Gatot Eko Susilo Geleng Perangin Angin Gita Putri Sadelina Giwa Wibawa Permana Haifa Muthi Hilma Lia Irfani I Iswan I Komang Tri Herdiana Ibnu Tuhu Pangestu Idharmahadi Adha Ikhfan Kurniyawan Irlin Safira Irvan Tegar Cesar Irwani Ninik Wijaya Iswan Iswan Ivana Aprili Andika Khansa Fay’i Safira Lintang Kurnia Aridini Lodewick Manurung Lovina Hasianna Tampubolon Lusmeilia Afriami Lusmeilia Afriani M Lucky Apriansyah Nawawi M Rizky Ismail M. Fahmi Rinaldi M. Haviz Mardiana Mardiana Mardiyansyah Mardiyansyah Margareta Welly Mariyanto Mariyanto Mesya Ashilah Miftahul Khoiri Muhammad Hendro Prawaka Muhammad Ijlal Ghaly Muhammad Naufal Agatha Muhammad Nur Kholiq Muhammad Sohib Muhammad Zaenal Arifin N. Rachma Nabilah Destin Amelia Nency Dwi Kusanti Nur Arifaini Ofik Taufik Purwadi Ofik Toupik Purwadi Panca Kurniawan Pusaka, Semerdanta Putri Mardiyanti Rahayu Sulistyorini Rama Dian Gani Rifki Ananda Saputro Riki Chandra Wijaya Riko Berli Ardian Rinaldi Pelawi Rini Puji Astuti Rio Dwi Septian Risdha Sagita Razak Rizki Lazuardi Prasetio Rizki Prinanda Umar Rizky Akhmad Dhani Rizqi Kurniawan Salman Farizi Sandy Kusuma Setyanto Setyanto Shelly Isya Ramadhani Sindu Abadi Sampurna Siti fitriatus Sholikhah4 Siti Khofidatur Rohmah Siti Nurul Khotimah Subuh Tugiono Sumiharni Sumiharni Suyadi Suyadi Syah, Aminudin Teguh Priadi Titik Ayuningsih Tri Budi Wibowo Tri Subakti Trisno Imany wahyu hadi kuncoro Wittri Djasmasari Yohanes Martono Hadi Yohannes Martono Hadi Yuda Romdania Yuda Romdania