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MEDIA KOMUNIKASI TEKNIK SIPIL

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Published by Universitas Diponegoro

ISSN : 08541809 EISSN : 25496778 DOI : -

Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

Media Komunikasi Teknik Sipil (ISSN 0854-1809) published twice in a year, in July and December. The article can be product of researches, scientific thoughts or case study, in civil engineering and isnâ€™t formed by politics, commercialism, and subjectivity unsure. This scientific journal contains articles of thought and research results in Civil Engineering that have never been published in scientific journals or other media.

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Articles 471 Documents

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EFEK PENAMBAHAN SERAT POLYPROPYLENE TERHADAP KARAKTERISTIK BETON SEGAR JENIS SELF-COMPACTING CONCRETE Widodo, Slamet
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 17, Nomor 2, JUNI 2009
Publisher : Department of Civil Engineering, Diponegoro University

The Self-Compacting Concrete (SCC) can be defined as a type of concrete that able to flow and consolidate under its own weight, completely fill the formwork even in the presence of dense reinforcement, maintaining its homogeneity and without the need for any additional compaction. Similar with other types of cement-based materials, SCC also has a brittle characteristic. This problem can be encountered by adding fibers in to the concrete mix. Unlike its effects to hardened concrete, the presence of fibers in concrete mixes can cause significant deterioration to the concrete workability. This research was conducted to investigate effects of polypropylene fiber addition on four key characteristics of SCC in the fresh state. In this research, concrete mixes were prepared containing 0, 0.05, 0.10, and 0.15 percent volume fraction of polypropylene fibers. Fresh properties were evaluated based on its passing ability, flowability, viscosity, and segregation resistance using J-ring, Slump flow, and Sieve Segregation Resistance tests. Test results indicate polypropylene fibers reduce flowability and passing ability but will increase viscosity and segregation ratio of SCC. Furthermore, it can be concluded that polypropylene fiber reduce deformability of SCC in the fresh state. It can be suggested that polypropylene fibers allowed to be added into SCC mixes up to 0.10 percent by volume of concrete. KeywordsÂ Â : Self-Compacting Concrete, Polypropylene fiber, Fresh characteristics ABSTRAK Self-Compacting Concrete (SCC) adalah jenis beton dengan daya alir yang sangat baik dan mampu memadat secara mandiri. Penambahan serat dalam beton segar dapat menyebabkan perubahan karakteristik beton segar. Dengan demikian, perlu dilakukan penelitian untuk memperoleh campuran adukan beton segar yang memenuhi persyaratan deformability dan ketahanan segregasi SCC. Penambahan serat polypropylene diberikan sebesar 0%, 0,05%, 0,1%, dan 0,15%, berdasarkan volume beton. Evaluasi dilakukan terhadap empat karakteristik utama beton segar SCC, yaitu: flowability (slump-flow), viscosity (T500), passing ability (J-Ring Test), dan ketahanan segregasi (GTM screen stability test). Penambahan serat polypropylene menyebabkan berkurangnya flowability SCC. Kondisi SCC masih dapat dicapai saat serat polypropylene ditambahkan sebesar 0,10% dari volume beton dengan slump-flow 556 mm. Pada penambahan 0,15% beton segar tidak dapat memenuhi syarat flowability SCC dengan slump-flow 428 mm. Penambahan serat polypropylene menambah viskositas SCC. Kondisi SCC masih dapat dicapai saat serat polypropylene ditambahkan sampai dengan 0,10% dari volume beton dengan T500 1,40 detik. Pada penambahan 0,15% beton segar melampaui batas maksimal viskositas SCC, dimana nilai T500 sudah tidak terukur. Penambahan serat polypropylene menurunkan passing ability SCC. Kondisi SCC masih dapat dicapai saat serat polypropylene ditambahkan sampai dengan 0,10% dari volume beton dengan beda elevasi 7,9 mm. Pada penambahan 0,15%, beton segar tidak dapat memenuhi syarat minimal passing ability SCC dimana beda elevasi mencapai 10,6 mm. Penambahan serat polypropylene mengurangi rasio segregasi SCC. Semua varian dalam penelitian ini dapat memenuhi syarat rasio segregasi beton segar SCC. Kata KunciÂ Â Â Â Â Â : Self Compacting Concrete, Serat Polypropylene, Karakteristik Beton Segar

Mitigasi Non Revenue Water (NRW) Sistem Jaringan Distribusi pada District Meter Area (DMA) Zona Kota Blahbatuh PDAM Gianyar Yekti, Mawiti Infantri; Gede Pebriarta Pratama, Ida Bagus; Ngurah Purbawijaya, Ida Bagus
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 2, DESEMBER 2019
Publisher : Department of Civil Engineering, Diponegoro University

The most common problem with drinking water supply is Non Revenue Water (NRW). NRW can be grouped into two types, namely physical water loss and non-physical water loss. This study aims to determine the NRW size, NRW causes, counter measures that can be done to suppress NRW. The results of evaluation of distribution networks that occur in the Blahbatuh City Zone District Meter Area (DMA) PDAM Gianyar. The difference between the amount of water distributed and the amount of water recorded in the account is NRW. The way to find out the cause and control of NRW is to analyze the results of the step test, UFM test (Ultrasonic Flow Meter), and conduct the interviews with employees of PDAM. The evaluation of distribution networks is only done in DMA Pande that has completed data. The amount of NRW that occured in the Blahbatuh City Zone is 474,142.83 m3/year (59.91%). The water loss is caused by damage to pipe accessories, leaky pipes, inaccuracies in the accuracy of the water meter. The water loss can be overcame by establishing a DMA, replacing pipe accessories, calibrating and replacing water meters. The evaluation results for the existing conditions of the distribution network in DMA Pande of Blahbatuh City Zone have not worked optimally. It seen from the results of the waternet and from the number of SRâ€™s that have not met the requirements for the formation of a DMA.

Pasak Kayu Kubler Sebagai Alternatif Alat Penyambung pada Konstruksi Kayu di Kalimantan Selatan Tjitradi, Darmansyah
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 1, Edisi XXXI, PEBRUARI 2005
Publisher : Department of Civil Engineering, Diponegoro University

This paper is as result of the experimental research of a KÃ¼bler wood connector on the several types of hard wood in South Kalimantan as the alternative of the connector in the timber structure. This experiment of the KÃ¼bler wood connector is done to the three types of the hard wood such as Bangkirai (Shorea Lacvifolia Endert), Simantok (Shorea spec.div) and Merbau (Intsia spec.div), and also the wood that will be connected as the tested supporting specimen is Ulin wood (Eusyderoxylon Zwageri). Every tested specimen is applied the centric compressive axial load in the straight joint, connection with an angle of 120Â° and connection with an angle of 90Â° until the connection reaches the failure strength. From the experimental result, it is obtained that on the straight joint, Merbau wood (Class II) having average and characteristic failure strength more than of its Simantok wood (Class II)Â andÂ Bangkirai wood (Class I). For the angle connection using SimantokÂ wood, the value of its characteristic failure strength is getting higher if the angle of the connection more than 90o, but not for the shifting. Compare with the theoretical value, actually the characteristic failure strength value of Merbau wood is more than the permissible strength, but not for its ofÂ Bangkirai and SimantokÂ wood.Keywords: KÃ¼bler woodÂ connector, wood connectionPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3894[How to cite: Tjitradi, D., 2005, Pasak Kayu Kubler Sebagai Alternatif Alat Penyambung pada Konstruksi Kayu di Kalimantan Selatan, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 1, pp. 27-38]

Transmisi dan Refleksi Gelombang pada Pemecah Gelombang Ambang Rendah Ganda Tumpukan Batu Surendro, Bambang; Yuwono, Nur; Darsono, Suseno
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 20, Nomor 2, DESEMBER 2014
Publisher : Department of Civil Engineering, Diponegoro University

Protection of beaches for tourism development, protection planning in addition to aiming to keep the damage to the beach will also need to think about the authenticity and beauty of the beach area . Building protective beaches that can meet these objectives include low threshold breakwaters (submerged breakwater). Some of the excessuse of low threshold breakwaters are: 1. No disturbing beauty of the beach; 2. because construction is under water, then when the wave comes partially absorbed wave energy, will be partially reflected, and the rest will be transmitted; 3. can become breeding grounds for fish, because the construction is hollow. The disadvantages are: 1. requires a large stone with a large number, 2. in the assembly requires a supporting infrastructure such as transportÂ equipment, long bridge, lifting equipment etc, thus requiring a lot of cost. Based on that research conducted by the title of the transmission and reflection of waves on double sumerged breakwater. Methodology of research, conducted with with physical models, and then continued with theoretical studies in order to obtain the equation for calculating the coefficient of wave Â transmission and wave reflection coefficient. The results showed that to calculate the magnitude of the coefficient of wave transmission and wave reflection coefficient can be approximated by the following equation: , .

Distribusi Data Tahunan Menjadi Data Bulanan Wahyuni, Sri Eko
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 3, Edisi XXXIII, OKTOBER 2005
Publisher : Department of Civil Engineering, Diponegoro University

InÂ the process of planning, design and management of water resources system, a long term data on hydrology is needed in order to obtain good analysis and final result. In Indonesia, usually it is very difficult to get a complete and appropriate data on hydrology at certain locations. To cope with the constrains and lack of data on hydrology as is mentioned above, experts on hydrology tend to solve the problems with the following methods: Stochastic analysis, Correlation and regressions analysis, and Simulation analysis on the watershed. In this paper, the phenomenon of the distribution of annual rainfall to monthly rainfall will be discussed utilizing stochastic analysis (i.e. temporal disagregation model), by presserving their statistical characteristics. The output of this model, which is quite reliable and can be use, among other, as a sound base for development of water resources and flood control.Permalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3926[How to cite: Wahyuni, S.E., 2005, Distribusi Data Tahunan Menjadi Data Bulanan, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 3, pp. 106-116]

Kajian Rumput Vetiver Sebagai Pengaman Lereng Secara Berkelanjutan Susilawati Susilawati; Veronika Veronika
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 22, Nomor 2, DESEMBER 2016
Publisher : Department of Civil Engineering, Diponegoro University

Flores is the island in the NTT province, which has a row of volcanoes, with the mountainous topography. Transportation is state road, along the coast with high cliffs on the other side. That often causes problems during the rainy season as several landslides. Various methods are used to overcome this landslide. Studies on vetiver grass as slope protection done to secure the slopes on a sustainable basis. First, an evaluation done for the slope construction along the slope safety from Nangaroro to Aegela, which are using vetiver grass as a safety slopes in addition to other security structures. It is also done for the same job of the road from Ende to Nangaroro and Ende-Detusoko. This study covers the technical aspects, ecological, construction and sustainability of the infrastructure that has been built. Furthermore, it is done the literature study to find more appropriate method, environmentally friendly and sustainable in securing these slopes problematic. From the literature studies and the field survey done, it can be concluded and recommended several models of eco-friendly structural design of vetiver grass and geotextile for slope protection, which is based on technical-meet standard strength, ecologically-friendly environment, locally-developed local wisdom, so it is easy to construct.

EVALUASI INDEKS PELAYANAN MINIMUM DENGAN MENGGUNAKAN IMPORTANCE PERFORMANCE ANALYSIS (STUDI KASUS : PELAYANAN BUS AC KOTA SEMARANG) Wicaksono, Y I; Hartanto, A
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 17, Nomor 2, JUNI 2009
Publisher : Department of Civil Engineering, Diponegoro University

ABSTRACT AC Damri bus Semarang has a year of this operation should be evaluated against the user satisfaction. Assess the scope of transportation services Damri conditioned bus with Importance Semarang-Performance Analysis of the results compared with the value of the Minimum Service Standards (SPM) public transportation issued by the Department of Transportation, results showed that the AC Damri bus service Semarang City still be above Standard Minimum services of government, but there are some parts that need to be improved include the performance of service provision at the time of departure / arrival, the availability of seats, the number of vehicle, hours of service operation, relevant infromasi precision route and travel schedule. Keywords : Measuring the quality of public transport services ABSTRAK Bus Damri AC Semarang telah beroperasi setahun ini, dimana pengoperasiannya memerlukan evaluasi untuk memenuhi kepuasan pengguna. Penilaian kondisi pelayanan transportasi Bus Damri dengan â€œImportance Performance Analysisâ€ dapat dilakukan dengan cara membandingkan dengan nilai Standar Pelayanan Minimum angkutan umum yang ditetapkan oleh Departemen Perhubungan. Hasilnya menunjukkan, bahwa pelayanan Bus Damri AC masih diatas Standar Pelayanan Umum yang ditetapkan Pemerintah, tetapi ada beberapa bagian tetentu yang perlu perbaikan diantaranya kinerja pelayanan waktu keberangkatan dan kedatangan, ketersediaan tempat duduk, jumlah kendaraan, lama waktu operasi, kejelasan rute dan jadual perjalanan. Kata kunci : Kinerja, pelayanan, minimum

Kajian Tata Air Kawasan Rawa Buaya Kota Administrasi Jakarta Barat Putra, Haryono
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 18, Nomor 1, PEBRUARI 2010
Publisher : Department of Civil Engineering, Diponegoro University

Flood is the complex problem. To solve this problem, we must pay attention for water flows as aone area hydrology system. Flood in Jakarta always happened at rainy season on January to March. District of West Jakarta as one of the five districts in DKI Jakarta, also always get flood, at any area high of flooded reach 1-3 meters. From the investigation of water system at Rawa Buaya region, the problem of water system at Rawa Buaya is less continuity from macro system with sub macro system and micro system which different authority. Drainage structured in great quantities at a good condition. The problem is a lot of trash on channel, sedimentation, unfunction gateway and any channel on broken, and also land use not agree with grand design of lay out 2010. The big influence is topographic area with average in low elevation. Base on research, polder with pumping system is the most compatible to be applying at Rawa Buaya region. Polder system and pumping system for make a slow down of time capacity of channels. Result of hydrology analysis that dimension of channel on Rawa Buaya region is not enough to accommodate of flood discharge. Keywords : Hydrologic area,Drainage, Topographic, Hydrology analysis, Flood discharge . Â Abstrak Â Masalah banjir merupakan masalah kompleks. Dalam pengamanan banjir, harus memperhatikan aliran air sebagai satu sistem wilayah hidrologis. Banjir di Jakarta selalu terjadi setiap musim hujan pada bulan Januari sampai Maret. Kota Administrasi Jakarta Barat yang merupakan salah satu dari lima kota administrasi di wilayah DKI Jakarta, juga sering dilanda banjir, dibeberapa kawasan tinggi genangan banjir mencapai 1-3 meter. Dari hasil kajian tata air kawasan Rawa Buaya, disimpulkan masalah tata air di Rawa Buata yaitu kurang adanya kesinergisan antara saluran makro dengan saluran sub makro dan mikro yang masing-masing kewenangannya berbeda. Kondisi drainase kawasan rawa Buaya sebagian besar secara konstruksi dalam kondisi cukup baik. Permasalahannya adalah banyak terdapat sampah, sedimentasi, kondisi pintu air yang tidak berfungsi dengan baik dan ada beberapa saluran yang terputus, serta kondisi tata guna lahan yang belum sesuai dengan RTRW2010. Hal yang berpengaruh besar adalah kondisi topografi kawasan Rawa Buaya yang rata-rata pada topografi rendah. Berdasarkan hasil penelitian, sistem yang sesuai dengan kondisi topograi Kawasan Rawa Buaya yaitu sistem polder. Pembangunan polder dan pompa berfungsi untuk memperlambat waktu penuhnya kapasitas saluran. Hasil analisa hidrilogi bahwa saluran yang ada di Kawasan Rawa Buaya mempunyai dimensi salura yang tidak cukup mengalirkan kapasitas debit rencana (debit banjir). Kata-kata Kunci : Wilayah hidrologis, Drainase, Topografi, Analisa hidrologi, Debit banjir

Model Pertumbuhan Sepeda Motor Berdasarkan Produk Dosmetik Regional Bruto (PRDB) Perkapita (Studi Kasus Pulau Jawa) Kresnanto, Nindyo Cahyo
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1, JULI 2019
Publisher : Department of Civil Engineering, Diponegoro University

The number and growth of vehicles, is a separate issue associated with sustainable transportation. In 2014, recorded vehicle election in Indonesia reached more than 448 vehicles per 1,000 people. And specifically, for motorcycles reach 365 vehicles per 1,000 people. The growth of motor vehicles is significantly influenced by economic growth (measured by Gross Domestic Product - RGDP). When compared with motor vehicle growth, it can be concluded that the high growth rate of motor vehicles at the end of this decade actually impact on the decrease of RGDP. To see the trend between economic growth represented by RGDP and the growth of motor vehicle (motorcycle) needs a model. Motor vehicle growth model in Java can be approached with Gompertz function. This function is a negative exponential function with asymptote used is the highest value of motor vehicle ownership in DKI Jakarta Province is 1,299 motorcycles per 1,000 people.

Pengembangan Metode Fast-Track untuk Mereduksi Waktu dan Biaya Pelaksanaan Proyek Studi Kasus Rumah Menengah di Malang, Jawa Timur Tjaturono, Tjaturono; Mochtar, Indrasurya B.
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 17, Nomor 1, PEBRUARI 2009
Publisher : Department of Civil Engineering, Diponegoro University

Construction cost of the middle-class housing in Indonesia tends to increase especially if a delay occurs at critical-path activities. Up to the moment the solution of this problem is by doing trade-off between the time and the cost. With this procedure, usually the completion time can be accelerated, but the increase in construction cost is unavoidable. It is described in this paper a method to accelerate the completion time of activities in the critical patch, so that the completion time can be kept as planned, but the construction cost does not increase. One of the efforts carried out here is by developing the fast-track method on critical activities with a modification of CPM model scheduling, and it is for case of construction of middle-class housing in Malang, East Java. The methods applied were site observation in the construction time and cost of the critical activities, and interview with the site manager as well as the supervisor. The data was processed non-statistically. The results obtained prove that the developed fast-track method here gives an advantage in time saving of 34% from the completion time in general and cost saving of 2.45%. Keywords: Time saving, cost reduction, CPM model, fast-track, middle-class housing. ABSTRAK Biaya pembangunan rumah menengah di Indonesia cenderung membengkak, terutama jika terjadi keterlambatan waktu penyelesaian aktifitas-aktifitas pada lintasan kritis. Hingga kini cara yang digunakan untuk mengatasi masalah ini adalah dengan melakukan trade-off antara waktu dan biaya. Dengan cara itu, umumnya percepatan waktu penyelesaian dapat dilakukan, tetapi pembengkakan biaya pembangunan tidak terelakkan. Diuraikan dalam tulisan ini cara percepatan waktu pelaksanaan pada aktifitas di lintasan kritis agar waktu penyelesaian dapat dicapai sesuai rencana, tetapi biaya pembangunan tidak membengkak. Salah satu upaya yang dilakukan di sini adalah melakukan pengembangan metode fast-track pada aktifitas di lintasan kritis dengan modifikasi penjadwalan model CPM, dan untuk kasusnya adalah pada pembangunan rumah menengah di Malang, Jawa Timur. Metode yang digunakan adalah observasi lapangan terhadap waktu dan biaya pelaksanaan aktifitas pada lintasan kritis, dan wawancara dengan Site Manager serta Pengawas Lapangan. Data diolah secara non-statistik. Hasil yang diperoleh membuktikan bahwa pengembangan metode fast-track seperti ini memberikan keuntungan berupa penghematan waktu sebesar 34% dari waktu yang umumnya dibutuhkan dan penghematan biaya sebesar 2,45%. Kata kunci: Penghematan waktu, penghematan biaya, model CPM, fast-track, rumahÂ menengah

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