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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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Analisis Pemodelan Numerik Redaman Breakwater Tenggelam Tipe Berlubang dan Tidak Berlubang Menggunakan Sigerd Annika Lukitawati; Ahmad Zakaria; Subuh Tugiono; Dwijoko Winarno
Jurnal Rekayasa Sipil dan Desain Vol 9, No 1 (2021): Edisi Maret 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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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 Korelasi Data Curah Hujan BMKG dengan TRMM (Studi Kasus Stasiun BMKG di Sumatera Utara) Ibnu Tuhu Pangestu; Ahmad Zakaria; Subuh Tugiono
Jurnal Rekayasa Sipil dan Desain Vol 8, No 1 (2020): Edisi Maret 2020
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Pengukuran curah hujan di Indonesia dilakukan oleh beberapa instansi, diantaranya adalah Badan Meteorologi dan Geofiska (BMKG) dan The Tropical Rainfall Measuring Mission (TRMM) NASA. Keduanya masing-masing memiliki kelebihan dan kekurangan. 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 1998-2014. 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 dengan yang diukur oleh BMKG. Nilai korelasi antara data TRMM dan data BMKG menunjukan hasil yang lebih baik jika menggunakan data bulanan, dimana nilai korelasi dari data bulanan 4 stasiun yang dihitung yang terbesar adalah 0,7992 dan yang terkecil adalah 0,5283.
Perencanaan Sheet Pile dengan menggunakan Program Plaxis (Studi Kasus : Jalan Padang Tambak – Liwa KM.227+400) Muhammad Naufal Agatha; Idharmahadi Adha; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 5, No 2 (2017): Edisi Juni 2017
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Soil landslide is one of the most common in the field of Geotechnical due to increased shear stress of a soil mass or decrease in shear strength of the soil mass. In other words, the shear strength of the soil mass is not able to bear the burden of work going on. Disruption to the stability of the slope can be caused by various human activities and natural conditions. Unstable slopes is dangerous to the surrounding environment, therefore slope stability analysis is needed. In this case the condition of Padang Tambak – Liwa street KM.227+400 Lampung Barat experience landslide up the road. The purpose of this study is to evaluate the value of the safety factor and to plan the dimension and stability of sheet pile to the landslide on Padang Tambak – Liwa street KM.227+400 using the Plaxis v.8.2 of computer program. The result of this study obtained the value of safety factor at the initial condition of 0,7106, with displacement of 12,71 x 103 m. The handling of reinforcement slopes of sheet pile profiles of type OT26 U profile which is placed at 2,5 meters from the middle of the highway with a size of 12 meters and then replace the soil layer 1 on the outside of the sheet pile into a slope-like slope soil and reduce the slope to 32° level obtained factor value safety at 1,1532, with displacement of 145,88 x 10-3 m. Handling by reinforcing sheet pile profiles of type OT26 U profile in this condition was considered safe because it met the requirement of safety factor value and had a small displacement value.Keywords: slope stability, safety factor, plaxis, sheet pile, displacement. 
Studi Kasus Pada Ruas Jalan Kecamatan Batu Ketulis Lampung Barat dengan Menggunakan Analisis Komputasi dan Metode Penanganannya M Lucky Apriansyah Nawawi; I Iswan; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 9, No 3 (2021): Edisi September 2021
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Batu Ketulis is a sub-district located in West Lampung Regency, Lampung province. West Lampung is one of the areas in Lampung that has landslide-prone potential. This study is to determine the value of slope safety factors and calculate the stability of slopes using Bronjong to hold the soil carrying capacity to be safe and not landslide, which is calculated using computational programs with fellenius method, bishop with saturated, partially saturated, and unsaturated groundwater face conditions. The results showed that soil parameters affect the stability of the slope, the condition of fully saturated soil has the lowest value compared to other conditions. From the results of the study obtained the value of the smallest safe factor before handling, namely at location II with an elevation of 20 m and a slope angle of 30° ,35° ,40° of 1,074, 1,023, 1,008 in the condition of fully saturated groundwater face. In the condition of the slope after handling using bronjong obtained a value of 2,462, 2,303, 2,223 for the Fellenius method, while for the Bishop method of 2.12, 2,006, 1.95. Handling using bronjong has a big effect on increasing safe factors so that landslide handling using bronjong is quite stable if applied at the research site.
Study System Drainase di Fakultas Teknik Universitas Lampung Riko Berli Ardian; Ahmad Zakaria; Gatot Eko Susilo
Jurnal Rekayasa Sipil dan Desain Vol 4, No 3 (2016): Edisi September 2016
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Penelitian ini dilakukan untuk mengetahui bagaimana sistem drainase yang ada apakah sudah optimal dan bagaimana pula kapasitas saluran yang ada apakah masih memadai atau tidak .Pada pelaksnaannya dilakukan analisis hidrologi dan hidrolika. Analisis hidrologi menggunakan data curah hujan maksimum setelah itu dilakukan pengukuran dispersi melalui perhitungan parameter statistik. Dilanjutkan dengan pemilihan jenis distribusi untuk  mendapatkan cara mengolah data pengukuran curah hujan rencana dan perhitungan intensitas hujan.  Analissis hidrolika berupa kapasitas debit drainase eksisting, setelah itu di buat sistem dan dimensi yang sesuai.Hasil penelitian berdasarkan pengukuran dispersi diperoleh distribusi yang cocok adalah Distribusi Log Pearson III dan diperoleh nilai curah hujan rencana untuk kala ulang 2 tahun sebesar 101,7983739 mm  Koefisien pengaliran pada DAS diperoleh sebesar 0,8961 dengan luas DAS 501,32 m2. Nilai debit hujan untuk kala ulang 2 tahun dengan metode rasional diperoleh nilai 2,1172 m3/detik   Nilai Qhujan adalah 2,1172 m3/detik sedangkan nilai Qteoritis adalah 0,0833 m3/detik. Karena Qhujan lebih besar daripada Qteoritis, dapat disimpulkan bahwa saluran drainase eksisting sudah tidak cukup lagi untuk menampung debit banjir yang ada.   Kata kunci : drainase, analisis hidrologi , analisis hidrolika , distribusi log                           pearson III, koefisien pengaliran, debit.
Analisis Stabilitas Lereng Dengan Variasi Lapisan Tanah Berbeda Yang Di Pengaruhi Nilai Kohesi Tanah Fajar Destri Atmoko; Lusmeilia Afriani; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 8, No 4 (2020): Edisi Desember 2020
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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.
Analisis Data Curah Hujan yang Hilang Dengan Menggunakan Metode Normal Ratio, Inversed Square Distance, dan Cara Rata-Rata Aljabar (Studi Kasus Curah Hujan Beberapa Stasiun Hujan Daerah Bandar Lampung) Fanny Prawaka; Ahmad Zakaria; Subuh Tugiono
Jurnal Rekayasa Sipil dan Desain Vol 4, No 3 (2016): Edisi September 2016
Publisher : Jurnal Rekayasa Sipil dan Desain

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This research is done with the purpose to calculate the correlation of measurable rainfall data with rainfall data on the calculation using each method mentioned above which is every method using three rainfall stasions, four rainfall stasions, and five rainfall stasions. It’s also purposed to decide with how many stasions and what method is resulting the best correlation value. As the result of the research using algebraic average method, normal ratio method, and inversed square distance method with daily rainfall data in a year, cumulative monthly rainfall data, and also average monthly rainfall data, it can be concluded that the greater number of stasions resulting the better correlation value. The correlation value with cumulative monthly rainfall data and average monthly rainfall data using some different number of stasions for each method is resulting a not significant differences with the value of percentage is 0,00025% to 0,01182%. Thecalculation uses cumulative monthly rainfall data and average monthly rainfall data showing the better correlation value than calculation using daily rainfall data in a year (0,67230 - 0,72097compared to 0,19305 - 0,25890). Keywords: Rainfall, normal ratio method, inversed square distance method, algebraic average method
Analisis Pembentukan MAT Pada Jaringan Sederhana Menggunakan Program Lazarus Esty Handayani; Rahayu Sulistyorini; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 3, No 2 (2015): Edisi Juni 2015
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Origin Destination Matrix (O-D MATRIX) is two- dimensional matrix are often to described thepatterns of movement that contains information the amount of intrazone movement. O-D MATRIXformation in this research on simple network with 5 origin-destination zone (O-D) used Gravitymethod with two-limitation . In this research, O-D MATRIX formation on a simple network usingLazarus program. Lazarus is the one of Integrated Development Environment (IDE) from FreePascal Compailer (FPC). FPC that can be used for Window, Linux, and MAC. If the previouscalculations requier a longer time, this program will be quickly and efficiently of O-D Matrix. Ittakes 3 hours to calculate O-D Matrix manualy and input the formula will enhance errorpossibility. This program spents 5 minutes to calculate O-D Matrix .Keywords: Lazarus, Origin Destination Matrix, Zone
Perbaikan daya dukung tanah dasar lempung yang distabilisasi dengan additive kapur dan matos terhadap kualitas lama waktu pemeraman Rizki Prinanda Umar; Iswan Iswan; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 6, No 1 (2018): Edisi Maret 2018
Publisher : Jurnal Rekayasa Sipil dan Desain

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The subgrade is the base surface for placement of other pavement parts.  The strength and durability as well as the thickness of the pavement construction layer depend on the properties and carrying capacity of this basic soil.  There are many types of soil, one of the basic types of soil that can be said to be bad for a construction is a soil with clay type. The soil samples used were taken from Sidorejo village, Sidomulyo district, South Lampung, then in this study the soil samples were mixed with matos and lime with variations of 5, 8, 10 and 12%.  After obtaining the highest CBR value, soil samples were immersed with the duration of 7, 14, 21, and 28 days to be tested again its CBR value.Soil in this study belongs to the group A-7-5, with LL values 74.112%, PL 35.44% and PI 38.669%.  The dry weight value (γd) and the optimum water content (ωopt) increased as the amount of lime content added to the sample.  In the CBR test, the highest increase of CBR value occurred on a 12% lime mixture variation of 21.5%.  While for CBR testing after curing without immersion, the highest CBR value is found on 28 days of curing duration of 45%.  The addition of lime and matos proved to increase the value of CBR and soil bearing capacity. Keywords : Clay Soil, CBR, Matos, Lime
Analisis Perhitungan Daya Dukung Pondasi Footplate dengan Menggunakan PHP script M Rizky Ismail; Setyanto Setyanto; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 3, No 3 (2015): Edisi September 2015
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Foundation as we know is part of construction. A purpose of this construction is to continue astructure load to the ground which can endure the load without settlement effect. In order toguarantee the building is on stable condition concerning from structure load or outer force like awind pressure, earthquake, etc and settlement which is more than permission limit unallowed. Toavoid unfunctional foundation structure, foundation must placed on the solid ground which canendure sttructure load without causing excessive settlement. In this era computer technologydevelop quickly. Part of that is programming using PHP script. Programming using script canmake some application to help us in our analyzing dan calculating proccess with interestingdesign , so we can operate it easily. And this program is using PHP script method . Basicallyanalyzing and calculating footplate manually can used up our time. Because on calculating thiswe use a complex method, we need program to analyze and calculate footplate foundation. Tomake a calculation simpler and quicker. Some of manual test result which are found by us ishaving 1% difference with the program. So we consider this program is able to calculate thefootplate foundationKeywords : foundation, footplate, PHP
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