Jurnal Rekayasa Sipil dan Desain
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Kajian Pengelolaan Sumber Daya Air Permukaan Berbasis Geographics Information System (GIS) di Kota Bandar Lampung
Get PDFBad 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
Studi Perbandingan Uji Pemadatan Standar dan Uji Pemadatan Modified Terhadap Nilai Koefisien Permeabilitas Tanah Lempung Berpasir
Get PDFAbstractConstruction of a construct in civil engineering requires that the material in top shape.The soil that became the foundation of a structure should reach the prime condition to be able to sustain the existing structure on it. But in fact it is not easily met at a project site . This research will compare the compacted soil permeability values are standard with compacted soil permeability values are modified. Soil of the sample in this study were taken from the sukajawa village , Lampung Tengah. The soil was taken from two locations with different types. The soil is then mixed with sand which then compacted using standard methods and methods modified. Permeability testing is done to obtain permeability coefficient. Based on the original soil physical test , AASHTO soil 1 put into groups of A - 7-5 and the second soil into a group of A- 7-6, which means the land is clay soil types and USCS classify the soil into fine-grained soil. The observations in the laboratory showed that compaction with different methods show different results and the amount of a mixture of sand affects the value of soil density.Keywords : Soil clay , sand , compaction and permeability.
Pengaruh Variasi Waktu Pemeraman Terhadap Nilai Uji Kuat Tekan Bebas pada Tanah Lempung dan Lanau yang Distabilisasi Menggunakan Kapur pada Kondisi Optimum
Get PDFIn this study used raw material such as silt and clay soil with a mixture of lime additive which has a variety of levels of 5%, 10%, and 15% as well as with a variety of curing time for 7 days, 14 days and 28 days.The purpose of this study to increase the compressive strength of silt and clay soil free them. Soil samples tested in this study represents silt soil from the village Yosomulyo, East Metro District, Metro City, while the clay is derived from Rawa Sragi, Jabung District, East Lampung regency.After doing research, from the third level, the compressive strength maximum free of silt and clay soil found in the levels of 15% with 28 days curing time. This is due to the greater levels of lime and the longer the curing time, the greater the unconfined compression value.Keywords: Clay Soil, Silt Soil, Unconfined Compression, lime
Pengaruh Resin Epoksi Terhadap Mortar Polimer Ditinjau dari Kuat Tekan, Kuat Tarik Belah, Daya Serap Air dan Scanning Electron Microscope
Get PDFPolymer mortar is a material formed through the process of building a composite concrete andbuilding polymers. Polymer mortar development efforts have been conducted in developedcountries. Until now the development of polymer mortar is still underway to reduce the use of thesemen, in order to anticipate the global warming. One of them is by using a polymer adhesivecement replacement material so produced a powerful mortal in a shorter time.On research was created mortal polymers without cement, fine aggregate and epoxy resin as thebinder of concrete. The composition of the raw materials of polymer mortar made with acomparison between aggregate and epoxy resins, with her blend of 20%, 25% .30%, 35%, 40% (%of the total weight of the aggregate). Mortar has been mold then dried in an oven at a temperatureof 600 C for 24 hours. Parameters measured include: water absorption, compressian strength,tensile strength, and microstructure analysis using a Scanning Electron Microscope (SEM). Theobservations suggest that the optimum condition of polymer mortar obtained on composition: 65%of the aggregate (aggregate) and 35% epoxy resin (% of weight of fine aggregate). In this state ofpolymer mortar characteristics obtained as follows: water absorption = 3,57%, compressianstrength = 6.80 MPa, and tensile strength = 1.75 Mpa. The microstructure of the polymer concreteanalyzed using SEM. Result showed that pore size distribution was uneven, and wisps of epoxyresin ≤ 30 μm.Keywords: compressian strength, tensile strength, water absorption, Scanning ElectronMicroscopy (SEM), polymer mortal
Analisis Penyebab Kemacetan Jalan di Pusat Kota Bandar Lampung Studi Kasus Jalan Kota Raja – Jalan Raden Intan
Get PDFoai:ojs.pkp.sfu.ca:article/341Bandar Lampung as a city that develops in many aspects, such as social,culture and economy .Especially travel on Raden Intan street, generally the most travelling occurs in the morning andaftenoon which is there are many people do activities at the same time and it makes traffic jam.The purpose of this research are determining a point of impact of traffic jam, getting a traffic jamcase and giving solution of it. Identification of traffic cases use weaving, capacity and free flowvelocity the street that was already identified. These analysis use to show connection one of partbetwwen two movement of trafficjam that converging the compare it with planned velocity in city.The results of study show that weaving, capacity and free flow velocity compare with plannedvelocity it makes decreasing of velocity on a street that was identified. Therefore, indisciplineontraffic needs a setting of row of traffic, such as a set of street row and rules of traffic fromstakeholder in this case.Keywords: a point of impact of traffic, a case of traffic jam,weaving , Capacity, free flow velocit
Analisis Perhitungan Gaya Internal Rangka Ruang dengan Menggunakan Metode Elemen Hingga
Get PDFThe finite element method is a method of modelling of an object to divide into smaller parts as awhole still has the same properties as the whole thing before it was divides into smaller sections(discretization). The finite element method can be used to analyse various types of structures, suchas plane truss, space truss, plane frame, space frame, beam, and grid.The main difference space truss and space truss are the number of degrees of freedom at eachnode. Each bar in order to space has six degrees of freedom. A space truss structure formed by thecombination of elements order in XYZ space. Variations of incorporation requires thetransformation of the characteristic elements of the local coordinate system to the globalcoordinate system.In this study, analysis of space truss using the finite element method will be assisted with thesoftware Matlab. Where the result of Matlab will be compared with result from the SAP2000. Theresults of this analysis are joint displacement, joint reaction, and element forces.Keywords : Finite Element Method, Space Truss, Matla
Analisis Hidrograf Satuan Terukur Sub DAS Way Besai
Get PDFWay Besai River is the largest river in west lampung district. High sedimentation in this riveraffects the performance of Hydroelectic Power Plant (HEPP) owned by PLN which is located inWay Besai River. In order to know the condition of Way Besay’s catchment area, a research isconducted on each of Way Besai’s sub catchment area. One of the sub catchment area is located inTalang Bandung Village, Pekon Sindang Pagar, Kel Tugu Sari Kec Sumber Jaya West LampungDistrict named Talang Bandung Catchment and Air Anak Catchment. In order to make the surveyof Catchments condition easier, the research uses measured unit hydograph analysis method. Thepurpose is to analyse the measured unit hydograph in order to get the value of Peak Discharge,Peak time, basic time, and analysing the flood hydrograph.In this researc the data needed are automatic rainfall data, automatic water level data, velocitydata, and the stream cross section. From these data will be used to make Rating Curve to turn thehydrograph of water level into flow hydrograph. The separation of the components of base flowand direct runoff using straight-line approach and calculate the efective rainfal to get the ordinateof unit hydrograph. From the average of unit hydrograph combined with periodic rainfall willobtain the periodic flood hydrograph.From the analysis result it is, obtained an average of hydrograph unit for each catchment area. On60 minutes period, the average of unit hydrograph of Air Anak Catchment and Talang BandungCatchment have average peak discharge average (Qp) of 0,340 m 3 /sec and 0,394 m 3 /sec, the timeof rise are 560 minutes and 660 minutes. The result shows that for return period of 25 years, flooddischarge for Air Anak is 16,832 m 3 /sec and for Talang Bandung is 20,179 m 3 /sec.Keywords: Measured Unit Hydrograph Analysis, Sub Catchment Area of Way Besai
Analisis Sedimentasi Di Check Dam Study Kasus : Sungai Air Anak dan Sungai Talang Bandung Desa Talang Bandung, Kecamatan Sumber Jaya, Kabupaten Lampung Barat
Get PDFThe river is a source of water that is accommodating and drain the water and material ingredientsbrought from the upstream. Problems which often occur in the upstream region is land erosioncausing sedimentation. The purpose of this study is: to determine the sediment rate and tocalculate filling time check dam of Air Anak River and Talang Bandung river.The location of this research is in the Air anak watershed and Talang Bandung watershed, SumberJaya Districts, Lampung Barat. Data needed in this research is suspended load sediment data,rainfall data, and water level data. The method used in this study is the prediction modelparametric approach to Universal Soil Loss Equation (USLE), measured sediment analysis,analysis of check dam age.From the analysis using USLE method it is found that the amount of sedimentation Air AnakWatershed is 3.306.3091 tons / year and sedimentation Talang Bandung Watershed is 6.913.3709tons / year. While the magnitude of the measured sediment sample is for the Air Anak Watershed is4.447.3193 tons / year with the sedimentation rate is 4.043.0175 tons / year and the amount ofsedimentation for Talang Bandung Watershed is 13.501.3716 tons / year with a sedimentation rateis 12 273 , 9742 tons / year. From the research results it can be known the age of check dams forAir Anak Watershed is 148 days and Talang Bandung Watershed is 73 days.Keywords: sedimentation, Air Anak watershed, Talang Bandung watershed, USLE method
Studi Air Tanah Berbasis Geographics Information System (GIS) di Kota Bandar Lampung
Get PDFPenelitian ini dilakukan untuk memberikan informasi dan gambaran umum kepada masyarakat tentang air tanah yang ada dengan cara menginventarisasi, mengeksploitasi, mengeksplorasi dan konservasi air tanah di Kota Bandar Lampung. Studi ini menggunakan program Geographic Information System (GIS) yang didukung dengan data sekunder berupa peta Bandar Lampung, data air tanah serta data curah hujan. Dalam penelitian ini dilakukan digitasi terhadap peta yang terdiri dari peta kondisi eksisting Bandar Lampung yang selanjutnya dioverlay dengan titik lokasi sumur bor menggunakan program GIS. Selain proses digitasi, dilakukan pula analisa neraca air tanah yakni antara tinggi air pengambilan sumur bor dengan tinggi hujan yang terinfiltrasi. Hasil dari penelitian didapatkan nilai keseimbangan air di tiap zona infiltrasi pada tahun 2006 yakni untuk zona infiltrasi <1.10-2 cm/detik selisihnya sebesar 7,909 m/tahun, zona infiltrasi antara 1.10-2 - 2.10-2 cm/detik selisih 7,896 m/tahun dan zona infiltrasi > 2.10-2 cm/detik 7,881 m/tahun. Jika diasumsikan setiap tahun mengalami peningkatan jumlah sumur sebesar 10% maka pada tahun 2016, untuk zona infiltrasi <1.10-2 cm/detik selisihnya sebesar 7,896 m/tahun, zona infiltrasi antara 1.10-2 - 2.10-2 cm/detik selisih 7,863 m/tahun dan zona infiltrasi >2.10-2 m/detik 7,823 m/tahun. Dari hasil analisa tersebut bisa disimpulkan pada tahun 2016 air tanah masih mencukupi untuk kebutuhan Kota Bandar Lampung, namun jika di lanjutkan sampai tahun 2079 kemungkinan akan mengalami krisis air tanah.Kata kunci : air tanah, neraca air, Geographics Information System (GIS
Efek Pengaruh Temperatur Pemadatan Pada Campuran Untuk Perkerasan Lapis Aus
Get PDFAbstractThe development of globalization in various sectors such as the economy, education, tourism and technology so fast up to now and will continue to grow, it must be supported by the rapid and safe transportation for the community. Happens a lot of road damage caused by compaction at a temperature that does not fit. This study was conducted to determine the effect of temperature on the value of the parameter marshall compaction. This recent research conducted in the Highway Laboratory, Civil Engineering, Lampung University. The study began by testing the quality of the material is asphalt and aggregate. After doing research the quality of asphalt followed by the manufacture of test specimens for value Optimum Asphalt Content. KAO value for the lower limit is 6.8% and for middle limit is 5.7%, after the obtained value KAO followed by the manufacture of the specimen at a solidification temperature variations. Variations in temperature used is 100oC, 115oC, 130oC, 145oC and 160oC. Based on these results it can be concluded that the solidification temperature greatly affects the value of the parameter marshall marshall The value parameter will affect the quality of the road, so the quality of the roads can be said to be safe and comfortable or not.Keywords: Temperature Effect, Compaction, KAO, Marshall Parameter AbstrakPerkembangan era globalisasi di berbagai sektor , misalnya sektor ekonomi, pendidikan, pariwisata dan teknologi yang begitu pesat hingga sekarang dan akan terus berkembang, hal ini mesti didukung oleh transportasi yang cepat dan aman bagi masyarakat. Terjadi banyak kerusakan jalan yang disebabkan oleh pemadatan pada suhu yang tidak sesuai. Penelitian ini dilakukan untuk mengetahui pengaruh suhu pemadatan terhadap nilai parameter marshall ..Penelian ini dilakukan di laboratorium jalan raya teknik sipil universitas lampung. Penelitian dimulai dengan pengujian kualitas bahan yaitu aspal dan agregat. Setelah dilakukan penelitian kualitas aspal dilanjutkan dengan pembuatan benda uji untuk mencari nilai Kadar Aspal Optimum. Nilai KAO untuk batas bawah adalah 6,8% dan untuk batas tengah adalah 5,7%, setelah didapat nilai KAO dilanjutkan dengan pembuatan benda uji dengan variasi suhu pemadatan. Variasi suhu yang digunakan adalah 100oC ,115oC,130oC,145oC,dan 160oC. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa suhu pemadatan sangat mempengaruhi nilai parameter marshall .nilai parameter marshall akan berpengaruh terhadap kualitas jalan ,sehingga kualitas jalan dapat dikatakan aman dan nyaman atau tidak. Kata kunci : pengaruh suhu, pemadatan, KAO, parameter marshal