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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 456 Documents

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Penggunaan Pecahan Genteng sebagai Agregat untuk Lapis Fondasi Perkerasan Lentur Nugroho, Soewignjo Agus
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 2, Edisi XXXV, JUNI 2006
Publisher : Department of Civil Engineering, Diponegoro University

Lime has been used for long time as soils stabilizer in sub base and base construction of road. This research studied influence of lime as stabilizer mixed with debris of clay roof as aggregate. Gradation specification is accordance to Bina marga Standard. Lime content used in this research are 0%; 2,5%; 5%; 7,5%; 10%; 12% and 15%.Result of this research shows as lime content increases, California Bearing Ratio (CBR) value for base also increase 80%; 85%; 88%; 91%; 95%; 100% and 110% respectively. For sub base CBR value increase respectively i.e 50%; 60%; 705; 74%; 85%; 90% and 95%.Keywords: stabilization, debris of clay roof, California Bearing RatioPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/2091[How to cite: Nugroho, S.A., 2006, Penggunaan Pecahan Genteng sebagai Agregat untuk Lapis Fondasi Perkerasan Lentur, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 2, pp. 112-118]

Pengekang Crossties di Zona Tekan Balok dengan Pembebanan Siklik Yulita Arni Priastiwi; Iswandi Imran; Nuroji Nuroji; Arif Hidayat
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 24, Nomor 2, DESEMBER 2018
Publisher : Department of Civil Engineering, Diponegoro University

Crossties that was installed as a confinement in the compression zone of the beam is proven can increase the ductility, especially when receiving the earthquake load. Using an experimental study, this paper explains the effect of crossties which was installed in compression zone of the beam. The model was a simplification of the plastic hinge of the beam. The beam was enlarged in the center of the span and would be loaded with a cyclic of point load, so as to produced the largest moment and shear fields in the face beam of the column. Moreover, the loading was provided by the displacement control system to achieve the ultimate condition. The results show that the crossties significantly increases the displacement and curvature ductility of the beams of 58.7% and 78.2%, respectively, compared to the beam without confinement. In addition, the load cycle formed by cyclic loading increases to 43 cycles in beam with crossties, meanwhile the beam without confinement can only survive up to 33 cycles. The crossties could also increase the cumulative value of inelastic displacement that occurs up to 98%, whereas its energy dissipation value is six times than the beam without confinement. On the other hand, the maximum load and capacity moment only increase about 6.5%.

Analisis Material Beton Bertulang Pasca Kebakaran dan Metode Perbaikan Elemen Strukturnya Sulendra, I Ketut; Tatong, Burhan
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 16, Nomor 1, PEBRUARI 2008
Publisher : Department of Civil Engineering, Diponegoro University

Fire is often destroyed on building structures at any time. Fired caused to change physically and mechanically of properties of reinforced concrete building. Strength, stiffness and ductility of structures generally decrease and degradation after fired. Some method to estimate and assessment residual strength of reinforced structured after fired are very importat to research and to forensic engineering structure after fired. Estimated high temperature and duration of fired after fired by phenolphthalein indicator (PP-test), CaO-free test and Hammer Test. Values of concrete compression strength and tensil strength of reinforced estimate from field samples. Some samples are put by core drill apparatus to give cylendric concrete and testing by compression testing ubit. Some concrete beams to made and to give 400ÂºC, 600ÂºC, 800ÂºC and 1000ÂºC temperature to indicated middle and heavy destroyed after fired. Flexural and shear repairing to give to those beams. To foundÂ little to middle destroyed at GUDANG building and middle to heavy destroyed at PASAR INPRES MANONDA building after tst by by phenolphthalein indicator (PP-test), CaO-free test and Hammer Test. Concrete compression strength more than Â 50% decrease Â after 800ÂºC fired and more than 20% decrease reinforced tensil strength after fired at 1000ÂºC fired temperature indicated middle to heavy destroyed. Repairing by CFS to the beams give result only 63% flexural strength at 800ÂºC and 53% shear strength at 800ÂºC.If fired 400ÂºC to 600ÂºC fired temperature the repairedto the beams by CFS can increase flexural and shear strength more than intact beams.Keywords: Reinforced Concrete, Fire, RepairingPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3665[How to cite: Sulendra, I.K. dan Tatong, B. (2008), Analisis Material Beton Bertulang Pasca Kebakaran dan Metode Perbaikan Elemen Strukturnya, Jurnal Media Komunikasi Teknik Sipil, Tahun 16, No. 1, pp. 48-60]

Pengaruh Faktor Motivasi dan Kepercayaan terhadap Kinerja melalui Komitmen pada Manajer Proyek Kontruksi dengan Pendekatan Structural Equation Modeling Sahadi, Sahadi; Wibowo, M. Agung
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013
Publisher : Department of Civil Engineering, Diponegoro University

The aim of this research is to analyze the effects of motivation and trust on performance through the commitment of construction project managers by using Structural Equation Modeling (SEM) approach. The result of this research shows that motivation, trust, commitment, and performance are valid and reliable latent variables. Goodness of fit model resulted is fit, or the model is relevant to the data. Motivation and trust has positive effects on commitment and commitment has positive effects on performance.

Penerapan Manajemen Resiko pada Pembangunan Proyek Perpanjangan Dermaga log (Studi Kasus: Pelabuhan DalamTanjung Emas Semarang) Ismiyati, Ismiyati; Sanggawuri, Ranggi; Handajani, Mudjiastuti
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 2, DESEMBER 2019
Publisher : Department of Civil Engineering, Diponegoro University

Delay in the implementation of the project often occurs due to various risk factors that have not been identified during project implementation, so that the impact on project delays and unexpected costs increases. However, each construction project has different risks, becaused the environmental conditions of the project, so that it requires handling different methods of project implementation. This study aims to: 1) analyze the risks that could potentially occur during the construction of the log dock extension; 2) Appropriate Handling Methods for the Implementation of the Log Dock Extension Work. The research method is done by identifying the risks that occur in the field and with the interview method about the possibility of possible risks that occur. The results of the study indicate five high-risk categories according to the perception of service providers that most influence on project delays. These risks include unpredictable external phenomena, such as tidal elevations that exceed plan, resulting in changes in design and method of implementation. The conclusions of this study include that the application of risk management to the implementation of the log dock extension project at the port of Tanjung Emas Semarang needs to be applied to minimize delays and reduce unexpected costs.

Pengoperasian Waduk dalam Rangka Penanganan Bahaya Kekeringan dan Banjir Suharyanto, Suharyanto
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 1, Edisi XXXI, PEBRUARI 2005
Publisher : Department of Civil Engineering, Diponegoro University

This paper present the use of stored water in reservoir more optimally by developing operation policy which is able to anticipate the dry and wet (flood) conditions. The reservoir operationÂ policy which is able to anticipate those conditions will result in more efficient use of water throughout the whole year season, i.e., minimising spillage during wet (flood) season and yet conserving water during dry season. When the dry season is incoming, the operation policy will direct to release less water than during the normal condition, thus conserving water. When the wet (flood) season is coming, the operation policy will direct to release more water to give attenuation volume in the reservoir such that during the rainstorm it can store the excess weter. The operation policy which has capability to anticipate the incoming condition is developed by employing Stochastic Dynamic Progamming (SDP) imbedded with fuzzy infrencing technique. The performance of the generated operating policy from SDP is evaluated by simulating the reservoir operation inplementing the generated operation policy under three conditions, i.e., normal, dry and wet (flood) conditions. It shows that the use of fuzzy inferencing embedded within the SDP program and in the simulation program can result in more flexible operation policy.Keywords: Pengoperasian Waduk, Optimasi, Fuzzy InferencingPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3897[How to cite: Suharyanto, 2005, Pengoperasian Waduk dalam Rangka Penanganan Bahaya Kekeringan dan Banjir, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 1, pp. 60-70]

Pengaruh Land Subsidence terhadap Genangan Banjir dan Rob di Semarang Timur Pujiastuti, ratih; Suripin, Suripin; Syafrudin, Syafrudin
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 21, Nomor 1, JULI 2015
Publisher : Department of Civil Engineering, Diponegoro University

Inundation of flood and rob (flood due to high tides) in Semarang City is increase wtithin area and depth. It be more seroius condition because of land subsisdence that happened in coastal area of Semarang City. This research is foccused on prediction and mapping of inundation flood and rob due to land subsidence effect in East Semarang, especially Tenggang Watershed and Sringin Watershed. On this research, data analysis including analysis of land subsidence, analysis of hydrological data, analysis of flood discharge with HEC-HMS, hydraulics analysis with HEC-RAS and then mapping the results of the flood inundation with Arc GIS. The inundation will be create with overlay the DEM of flood water level and DEM of topographic. According to the results of analysis is known that minimum land subsidence is 0 cm/year that happened in south area of Semarang and more higher ini north area with maximum land subsidence is 5.58 cm/year. On periode Â Â 2014-2031, the contribute of land subsidence to increase the inundation of flood and rob is 1.39%/year.

Pemanfaatan Lumpur Limbah Tinta Sebagai Bahan Substitusi Pada Material Bangunan Berbasis Semen Arif Hidayat
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 1, Edisi XXXIV, PEBRUARI 2006
Publisher : Department of Civil Engineering, Diponegoro University

Ink residue as a site product from printing factories can accumulate in time forming an environmental threatening product. Beside from its magnitude in terms of quantity, its black-brownish color can also contaminate surrounding areas. Studies performed at the Material and Structural Laboratory, Diponegoro University, attempt to increase this ink residue’s commercial value by using it as a substituting material for cement based products. Cement based products which are investigated are concrete and paving blocks. Concrete is a building material consisting of sand, gravel and cement acting as binding agent. On the other hand Paving Blocks consisting only of sand and cement and are formed by pressing the mass, requiring a mix with a very low water content. The ink residue was replacing parts of the sand. Factors being observed are the compression strength, weight and unit price. Keywords: ink residue, concrete, paving blocks, compression and unit weightPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3930[How to cite: Hidayat, A., 2006, Pemanfaatan Lumpur Limbah Tinta sebagai Bahan Substitusi pada Material Bangunan Berbasis Semen, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 1, pp. 13-20]

Perubahan Nilai Ekivalensi Mobil Penumpang Akibat Perubahan Karakteristik Operasional Kendaraan di Jalan Kota Semarang Yulipriyono, EPF. Eko; Purwanto, Djoko
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 1, JULI 2017
Publisher : Department of Civil Engineering, Diponegoro University

Passenger Car Equivalent (PCE) is a conversion factor to make equal the various types of vehicles that operating on the road section into one type of vehicles i.e. passenger cars. Indonesian Highway Capacity Manual (MKJI) 1997 has set the PCE values for various types of vehicle groups either motorized. PCE values of various types of vehicles are not absolute because many factors that affect can change over time and development of automotive technology. This study aimed to find out the changes of PCE value that occurs. As for the purpose of research to determine the current number of PCE values due to the change of operational characteristics of vehicles on a highway especially for urban highways. Data analysis for the determination of PCE values used: time headway method, speed method, capacity method, and vehicle dimension method. The conclusion of this study: PCE of light vehicles (LV) = 1 still in accordance with MJKI 1997; PCE of heavy vehicles (HV) varied depending on the road types. PCE of heavy vehicles that according to MKJI 1997 is used as a median; PCE of motorcycles (MC) of MKJI 1997 need to be adjusted to 0.4 or more, particularly in the calculation of actualy traffic flow.

DESIGN OF SUBMERGED BREAKWATER Sabdono, Parang; Parmantoro, Priyo Nugroho
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 12, Nomor 1, Edisi XXVIII PEBRUARI 2004
Publisher : Department of Civil Engineering, Diponegoro University

Pantai alexsandria yang berlokasi di Mesir merupakan pantai tujuan wisata yang terkena erosi gemburan gelombang. Untuk melindungi pantai dari erosi yang berlanjut dipilih struktur submerged breakwater dengan alasan lebih estetis dibandingkan dengan merged breakwater. Hal ini dikarenakan puncak struktur beradadi bawah muka air laut rata-rata sehingga para wisatawan masih dapat melihat pemandangan ke laut lepas tanpa adanya penghalang bagi pandangan mereka. Alasan lain, dengan perlindungan oleh submerged breakwater pengunjung dapat dengan aman berenang di pantai, tetapi dapat pula merasakan gelombang, dan arus. Untuk tujuan renang sub merged breakwater dibagi dalam segmen-segmen. Tinggi gelombang signifikan (Hs) harian digunakan untuk merencanakan struktur sub merged breakwater, tetapi untuk kekuatan breakwater digunakan Hs dengan kala ulang 100 tahun.

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