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All Journal VALENSI 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 Journal of Engineering and Scientific Research (JESR) Jurnal Teknik Industri Terintegrasi (JUTIN) Journal Coaching Education Sports Journal of Infrastructural in Civil Engineering (JICE) 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
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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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) Prawaka, Fanny; Zakaria, Ahmad; Tugiono, Subuh
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 3 (2016): Edisi September 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i3.418

Abstract

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 Handayani, Esty; Sulistyorini, Rahayu; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 3 No. 2 (2015): Edisi Juni 2015
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v3i2.449

Abstract

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
Analisis Perhitungan Daya Dukung Pondasi Footplate dengan Menggunakan PHP script Ismail, M Rizky; Setyanto, Setyanto; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 3 No. 3 (2015): Edisi September 2015
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v3i3.478

Abstract

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
Analisis Harga Satuan Pekerjaan Jalan dan Jembatan Menggunakan Program Lazarus (studi kasus devisi 3, 5, 6, & 7) Trisno Imany, Tri Subakti; Hadi, Yohannes Martono; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 4 (2016): Edisi Desember 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i4.547

Abstract

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
Kebutuhan Material Jaringan Jalan Provinsi di Provinsi Lampung tahun anggaran 2016 wilayah 1 dan 3 Prawaka, Muhammad Hendro; Hadi, Yohanes Martono; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 1 (2017): Edisi Maret 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i1.613

Abstract

This study was conducted to asses the material requiermens for provincial network in Lampung in budget year 2016 to obtain the results for the following year.From the calculation of material needs of Lampung province road workfor region 1 and 3 in 2016, it shows a considerable need for asphalt, cement, sands, stone. From the calculation analysis of government tendency to apply tender pattern is quite late. And giving impact on the latency of material supply needs of road works in Lampung Province.However, to meet the material needs of Lampung Province road works is quite good. Considering its fulfilled the smooth supply needs to meet the material recuirements.Keywords : material recruitmen, road networks, Lampung province
Perencanaan Sheet Pile dengan menggunakan Program Plaxis (Studi Kasus : Jalan Padang Tambak – Liwa KM.227+400) Agatha, Muhammad Naufal; Adha, Idharmahadi; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 2 (2017): Edisi Juni 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i2.745

Abstract

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. 
Perbaikan daya dukung tanah dasar lempung yang distabilisasi dengan additive kapur dan matos terhadap kualitas lama waktu pemeraman Umar, Rizki Prinanda; Iswan, Iswan; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 6 No. 1 (2018): Edisi Maret 2018
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v6i1.792

Abstract

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
THE INFLUENCE OF THE ADDITION OF RICE HUSK ADDITIVES AND MATOS TO THE VALUE OF CBR (CALIFORNIA BEARING RATIO) OF CLAY SOIL IN TERMS OF CURING TIME Sampurna, Sindu Abadi; Iswan, Iswan; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 2 (2017): Edisi Juni 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i2.801

Abstract

Soils have different types and different carrying capacity. One of them is clay soil that has the low carrying capacity. Viewed from the rapid development of infrastructure in Indonesia, does not rule out the possibility that the infrastructure built in areas with clay soil types. Given the small carrying capacity of the clay, the soil should be improved in order to support the development of a construction.soil improvement with an additional mixture of rice husk ash and matos as stabilizer can improve soil quality. This research was conducted with rice husk ash mixture of 6%, 8%, 10%, and 12% and matos with level 3,3898% gr. Then, curing for 7 days, 14 days, 21 days, and 28 days without immersion. Soil that used in research is from Sidomulyo, South Lampung is a type of clay soil that belongs to the A-7-5 group based on the AASTHO classification. Research in laboratory showed that 28 days of curing with 12% rice husk ash mixture had the highest CBR value from other curing durations. Soil clay CBR value increased from 7.3% to 31.8%. This shows that the ash mixture of rice husk and matos is quite effective in increasing the carrying capacity of clay soil. Keywords : Matos, CBR, Rice Husk Ash
Pengaruh Penambahan Zat Additive Abu Sekam Padi dan Matos Terhadap Nilai CBR (California Bearing Ratio) Tanah Lempung Sampurna, Sindu Abadi; Iswan, Iswan; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 6 No. 1 (2018): Edisi Maret 2018
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v6i1.805

Abstract

Soils have different types and different carrying capacity. One of them is clay soil that has the low carrying capacity. Viewed from the rapid development of infrastructure in Indonesia, does not rule out the possibility that the infrastructure built in areas with clay soil types. Given the small carrying capacity of the clay, the soil should be improved in order to support the development of a construction.soil improvement with an additional mixture of rice husk ash and matos as stabilizer can improve soil quality. This research was conducted with rice husk ash mixture of 6%, 8%, 10%, and 12% and matos with level 3,3898% gr. Then curing for 7 days, 14 days, 21 days, and 28 days without immersion.Soil that used in research is from Sidomulyo, South Lampung is a type of clay soil that belongs to the A-7-5 group based on the AASTHO classification. Research in laboratory showed that 28 days of curing with 12% rice husk ash mixture had the highest CBR value from other curing durations. Soil clay CBR value increased from 7.3% to 31.8%. This shows that the ash mixture of rice husk and matos is quite effective in increasing the carrying capacity of clay soil. 
Stabilisasi Tanah Lempung yang Dicampur Zat Additive Kapur dan Matos Dtinjau Dari Waktu Perendaman Herdiana, I Komang Tri; Iswan, Iswan; Zakaria, Ahmad
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 6 No. 1 (2018): Edisi Maret 2018
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v6i1.806

Abstract

In order to obtain a good, strong and sturdy foundation layer, good soil carrying capacity is required.  In addition, the soil also serves to support the foundation of a civil construction such as buildings and pavement. Therefore it is necessary to do soil improvement for soil types that have low carrying capacity. In this final project, a research on high plasticity clay soil is taken from Sidorejo area, Sidomulyo district, South Lampung to find CBR value with variation of immersion time.  From this research, we can see the change of CBR value with immersion variations that have been done for 4, 5, 14, and 28 days.From the research conducted in the Laboratory of Soil Mechanics of Lampung University , it is known that the soil originating from Sidorejo area, Sidomulyo District Southern Lampung is classified into A-7-5 clay soil which has a soil bearing capacity value of 7%.  After the improvement of soil with lime additive substances with optimum content of 12% and 3,472 gr of matos stabilizer which is then done with immersion test with a duration of 4, 5, 14 and 28 days, the value of CBR is 24% at 4 days, 22% at 5 days, 15.6% at 14 days and 9% at 28 days.  The value of CBR obtained tends to decrease as the duration of immersion is increased, so it can be concluded the duration of immersion greatly affects the size of soil bearing capacity.
Co-Authors Abyuliani, Alza Achmad Karim adama, riri arinda Afriami, Lusmeilia Agatha, Muhammad Naufal Agustriyanto, Dono Ahmad Herison Ahmad Tusi 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 . Asep Irvan Irvani Ashruri Ashruri, Ashruri Asri Oktiani Asrorudin, Udin Atika Sari Atmoko, Fajar Destri Aynuddin, . Aynuddin, Aynuddin Ayu Kurniasih, Ayu Ayuningsih, Titik Cesar, Irvan Tegar Chairil Anwar Citra Dewi Damayanti, Amelia Nurul Dian Kusumaningsih Dian Pratiwi Didik Didik Dinaryoko, Arif 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 Indriana K, Dyah 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 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 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 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 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 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