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Kota bandar lampung,
Lampung
INDONESIA
Jurnal Rekayasa Sipil dan Desain
Published by Universitas Lampung
ISSN : 23030011     EISSN : 27150690     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 840 Documents
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Studi Kuat Tekan Paving Block dari Campuran Tanah, Semen, dan Abu Sekam Padi Menggunakan alat Pemadat Modifikasi Sherliana Sherliana; Iswan Iswan; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 4, No 1 (2016): Edisi Maret 2016
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

One of means transportation wich already familiar is paving block. Paving blocks made of amixture of portland cement or adhesive material like hydrolysis, water, and aggregates with orwithout other ingredients. However, the use of the material is made into high production rates.Therefore, in this study the process of manufacture of paving blocks will be tested using alternativematerials such as soil mixtures with rice husk ash additive materials derived from residualcombustion rice straw waste combined with portland cement.Soil samples were tested in this study are derived from clay Kota Baru, South Lampung are..Variations in content the mixture used was 0%, 7%, 9%, 11% and 13%, to 14 days curing timeand with burning treatment and without burning paving block samples. Based on the results ofphysical testing original soil, USCS soil samples classified as fine-grained soil and included in theCL group.The results showed that the manufacture of paving blocks using the soil material with additivematerials such as rice husk ash and cement did not fulfill SNI paving block. However, in generalthe addition of the additive materials can increase the physical and mechanical properties of thesoil. It is proved by the increasing value of the optimum moisture content and ductility of pavingblocks. For the compressive strength of paving blocks without and with burning process is bestshown in the addition of a mixture of 9% content.Keywords: Paving blocks, clay soil, compressive strength
Pengaruh Nilai CBR ( Califiornia Bearing Ratio ) Tanah Lempung Lunak yang Dicampur Dengan Zat Additive Abu Ampas Tebu dan Matos Ditinjau Dari Waktu Perendaman Sejati, Septias Herson; Iswan, Iswan; Sumiharni, Sumiharni
Jurnal Rekayasa Sipil dan Desain Vol 6, No 2 (2018): Edisi Juni 2018
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AbstractThe carrying capacity of a particular soil depends on the density of the soil that constitutes the layer.   The smaller the value of CBR (California Bearing Ratio)  of soil layer of a particular soil type, then the layer made on it should be thicker.  In Indonesia, rarely found compacted soil and achieve high CBR value.  Soft clay soils that are common in the lowlands or beaches on average have a low CBR value. Soil samples used in this study originated from the  Sukajawa Village, Bumi Ratu  Nuban Sub District, Central Lampung.  The aim of this research is to know the disturbed CBR value mixed with bagasse ash 6%, and matos weighing 3,5817 gr cured for 28 days then soaked with duration 7, 14, 21, and 28 days. Based on AASHTO classification, this soil belongs to group A-7-6, with LL value 56,69%, PL 26,69%, PI 30,02%.  Under condition without immersion, CBR value was 41,8%, and at 7, 14, 21, and 28 day immersion condition, CBR value was 14,6%, 12,8%, 10,7%, and 9,2%.  From the results of this study it can be concluded that the soil with a mixture of 6% bagasse ash and matos is good for use as a subgrade in road construction because the CBR value> 6% is soaked for 28 days.Keywords : Soft Clay Soil, Bagasse Ash, Matos, CBR.
Simulasi Waduk Sukaraja III, Kecamatan Margatiga, Kabupaten Lampung Timur Febrian Febrian; Gatot Eko Susilo; Endro P Wahono
Jurnal Rekayasa Sipil dan Desain Vol 4, No 3 (2016): Edisi September 2016
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Sukaraja III’s reservoir is one of reservoir that is usefull to irrigate rice fields in Rawa Sragi II.  To optimize inflow and storage of Sukaraja III’s reservoir, simulation is needed to obtain how many area can be irrigated by optimize the objection function of reservoir.This study was conducted at Sukaraja village, and Negeri Jemanten, Margatiga District, East Lampung Regency. In this study, there’re three analysis, analysis of inflow, analysis of outflow and analysis about water balance. Analysis of inflow use Argoguruh’s weir discharge data 2005-2012. Analysis of inflow include Argoguruh’s weir runoff discharge and discharge of watershed Sukaraja III’s dam. Analysis of inflow include evaporation, maintenance flow, and water needs of the irrigation. Analysis about water balance is used to know how much the volume of reservoir which affected by inflow and outflow. Next, do the simulation to get the maximum area of field with meet two requirements. Reservoir water level should always be above 18 meters and must meet 80% reliability.From the analysis, the result for the largest total inflow in 2005 and the smallest total inflow occurred in 2006. Outflow for each year is different because it is influenced by planting different beginning period, the beginning of January and the beginning of December, and evaporation which caused by total area of reservoir inundation. Fields which can be irrigated with initial period of planting in early January is 4739 ha, and fields which can be irrigated with initial period of planting in early December is 5600 ha. This simulation meets 100% reliability and reservoir water level is always above 18 meters. Key word: simulation, inflow, outflow
Hubungan Batas Cair dan Plastisitas Indeks Tanah Lempung yang Disubstitusi Pasir Terhadap Nilai Kohesi Tanah pada Uji Direct Shear Taufik Ramadhani; Iswan Iswan; Muhammad Jafri
Jurnal Rekayasa Sipil dan Desain Vol 3, No 2 (2015): Edisi Juni 2015
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The Clay has a low shear force properties, large density, small permeability coefficient and has alow bearing capacity. To increase the bearing capacity of the clay can be used a mixture of sand.In this study, the test is done by using the Direct Shear test, which will be a reference in relation ofliquid limit and plasticity index to the value of cohesion (c) of each soil sample that has beensubstituted with sand.Soil samples used an original soil samples and disturbed soil of clay that comes from threelocations: the area Margakaya Jati Agung South Lampung, Palputih Karang Anyar SouthLampung , and Belimbing Sari Jabung East Lampung. Clay will be mixed with sand No.40 sieve(0.43 mm) in accordance with the required percentage of the variation in sand content of 0%, 5%,10%, and 15%.Based on AASHTO classification system, the three of soil include to the class of ordinary clay soilup to bad as subgrade material. The addition of sand mixture into three types of clay causingdecreased shear strength. The greater the addition of sand content, then the value of cohesion (c),liquid limit and plasticity index of the soil will decrease and shear angle will increase.Keywords : shear strength, Atterberg limits, Clay, Sand .
Studi Analisis Penurunan Tanah Lempung Lunak dan Tanah Lempung Organik Menggunakan Pemodelan Matras Beton Bambu Nawawi Nawawi; Lusmeilia Afriani; Iswan Iswan
Jurnal Rekayasa Sipil dan Desain Vol 5, No 3 (2017): Edisi September 2017
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The strength of infrastructure buildings is influenced by the type of soil underneath. One type of land that is widely found in the land in the province of Lampung is fine-grained soil. The fine grained soil is meant soft clay and organic clay. Construction of the above clay will experience significant land subsidence constraints when given the loading. The load that causes the pore water pressure increases so that the pore water out and soil decreases consolidatively. Therefore, it is necessary to study soil degradation using box test and bamboo concrete mats as a means of land degradation. The result of clay decline testing using boks modeling and bamboo concrete mat, soft clay experience faster rate of process of decline (Cv) than organic clay. The magnitude of soft clay (Cc) decline is less than that of organic clay. Soft clay volumes are also changing volume (Mv) faster than organic clay. Coeficient of compression(av) of soft clay is also faster than organic clay. The total decline in total soil over a 20 year period on soft clay is smaller than that of organic clay. Keywords : Clay, Test Box, Bamboo Concrete Mattress, Soil Consolidation
MATOS ADDITION EFFECT ON SOIL CLAY CBR VALUE MIXED WITH RICE HUSK ASH VIEWED FROM SOAKED TIME Duha, Mayunata; Iswan, Iswan; Purwadi, Ofik Taufik
Jurnal Rekayasa Sipil dan Desain Vol 6, No 2 (2018): Edisi Juni 2018
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Clay is a type of soil that has high water content and generally has a low soil carrying capacity.  This can cause problems when the soil will be built a construction on it.  Clay will easily saturated when the rainy season comes so that the soil water content therein increases which makes its carrying capacity decreased.  The addition of matos and rice husk ash is one of the methods to stabilize the soil.  With this method, this research is expected to know the effect of the addition of these substances in saturation condition by reviewing the research samples on the value of CBR immersion. This research was conducted at the Laboratory of Soil Mechanics Faculty of Engineering, University of Lampung by making optimum sample which has the highest CBR value then searched the effect of adding the duration of immersion in 7, 14, 21, and 28 days.  The soil samples taken from Sidorejo village, Sidomulyo subdistrict, South Lampung are clay soil which has the original soil CBR value of 7.3% and 31.8% in the CBR optimum curing soil mixture.The soil stabilization method experienced by the sample showed a decrease of CBR value from 15.5% on the duration of the immersion time of 7 days to 8% in the duration of the 28 day immersion time.  This decreased immersion CBR value indicates that the addition of the duration of the immersion time resulted in the CBR value of the soil mixed soil samples decreasing as the soaking time of the soil samples grew. Keywords : Matos, immersion CBR, Rice Husk Ash, Clay.
Kajian Pengelolaan Sumber Daya Air Permukaan Berbasis Geographics Information System (GIS) di Kota Bandar Lampung Firdaus bin Iskhaq; Ofik Taufik Purwadi; Geleng Perangin angin
Jurnal Rekayasa Sipil dan Desain Vol 4, No 3 (2016): Edisi September 2016
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Bad water resource management caused water availability unable to be fulfiled to the maximum level throughout the year, especially in the dry season. The water crisis becomes a difficult problem because  the tendency of people’s anticipation only glued to the conventional water sources which are susceptible to dry out, such as wells and others. This study aimed to determine the condition of surface runoff resources in the Bandar Lampung city. And also to provide a solution of problems that often occur in the Bandar Lampung city, especially in the dry season. This research conducted using MWGIS software as a program for making geographical information of Bandar Lampung city conditions in general and  rivers condition specifically. In this digital era, information of rivers based on digital data are required for society and the government as an instrument to establish decisions and policies in the management of surface runoff resources, especially in case of rivers in Bandar Lampung city. The output from MWGIS is an illustration of a geographical condition of Bandar Lampung city which in simple form map contains a variety of information that related to the geographical conditions, such as land cover data, topography, slopes, rivers, districts, villages and many others depend on how far the manufacturing database / information in MWGIS required.
Analisis Koordinasi Sinyal Antar Simpang Pada Ruas Jalan Z.A. Pagar Alam Prayoga Prayoga; Rahayu Sulistyorini; Yohanes Martono Hadi
Jurnal Rekayasa Sipil dan Desain Vol 5, No 2 (2017): Edisi Juni 2017
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There are three intersections that are within 1.3 km of study focused on Jalan Z.A. Pagar Alam.  The problem that sometimes occurs is vehicles must stop at every intersection because it always gets a red signalThe data collection was done by a direct survey at all three intersections. The data that taken from the intersection are geometric and volume intersection.  The first intersection released from signal coordination between intersections, with a cycle time of 63 seconds was obtained degree of saturation on average 0.7378 and the queue length 70.23 m. After three planning between the intersection II and III intersection obtained the best cycle time of 99 seconds. The average degree of saturation of intersection II is 0.77 with queue length 146.71 m and the third intersection is 0.85 with queue length 82.03 m. Because the degree of saturation is approaching 0.8 and 0.8 exceed existing special construction needs to be done.
Evaluasi Kinerja Rainwater Harvesting di Lingkungan Fakultas Teknik Hasna Nur Afifa; Gatot Eko Susilo; Margaretta Welly
Jurnal Rekayasa Sipil dan Desain Vol 5, No 1 (2017): Edisi Maret 2017
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AbstractThis research aims to find the effectiveness of development the ground water tank, distribution system water supply in network, operations and water treatment and examination of water quality which is stored. Research conducting is using the method descriptive quantitative. This method of collect data dimensions PAH, data whole space the roof of the part that chatching water to ground water tank, rain data 2011 – 2013 as value inflow, standard water needs of the department of civil engineering on average each day as the value of the outflow.  The research is obtainable potential saving groundwater within 3 years worth 45.3%, from the laboratory tests and testing physically water it is included on the criteria water quality category 1 class the water is aimed can be used to raw water drinking water, the distribution system water used the down feed system, water threatmen that is used ( filter solid material, the deposition of mud, absorption). Keywords : Rainwater, rainwater harvesting, the potential saving groundwater AbstrakTujuan penelitian ini adalah untuk mengetahui efektifitas pembangunan ground water tank tersebut, system distribusi jaringan air bakunya, pengoperasian dan perawatan airnya serta dengan menguji kualitas dari air yang ditampung. Penelitian yang dilakukan menggunakan metode deskriptif kuantitatif. Metode ini berupa mengumpulkan data dimensi PAH, data luasan atap keseluruhan bagian yang menangkap air ke ground water tank, data hujan tahun 2011 – 2013 sebagai nilai inflow, kebutuhan air baku jurusan teknik sipil rata – rata setiap harinya sebagai nilai outfow.  Dari hasil penelitian ini didapat potensi penghematan air tanah dalam kurun waktu 3 tahun sebesar 45.3%, dari hasil uji laboratorium dan pengujian secara fisik air hujan tersebut masuk dalam kriteria mutu air kategori kelas 1 yaitu air yang peruntukannya dapat digunakan untuk air baku air minum, sistem distribusi air yang digunakan yaitu down feed system,water threatment yang digunakan (penyaring bahan padat, pengendapan lumpur, absopsi/penyerapan).  Kata kunci: Air Hujan, Pemanen Air Hujan, Potensi Penghematan Air Tanah
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
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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

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