MEDIA KOMUNIKASI TEKNIK SIPIL
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 isn’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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<![CDATA[Studi Model Prediksi Fatalitas Korban Kecelakaan Lalu Lintas Jalan Berdasarkan Karakteristik Wilayah dengan Multi Variabel ]]>
<![CDATA[Agus, Supratman]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8427
<![CDATA[Road safety researchers in many countries assume that population and numbers of vehicles as the most decisive variables to predict numbers of fatality by road accidents. That assumption is not accordance with conditions in Indonesian. In ASEAN, Indonesia has largest of area and population, longest road infrastructure, and largest number of motor vehicles, but road victims’ fatality is low. This indicate under reporting. Tis study aimed to obtaining the predictive model of road victims’ fatality which suits Indonesia’s conditions. Three model were compared are Andreassen model, Artificial Neural Network with two variable (ANN2) and four variables (ANN4), with numbers of driving license holder and length of road as two additional variables. Model validation was performed on three cities in West Java with different categories population densities. Result of comparison and validation test using MAPE, MAE, and RMSE criteria show that the best predictions models of road victims’ fatality is ANN4. In addition, predictions of road victim numbers in Indonesia are not only influenced by population and numbers of vehicles, but also by driving license holder numbers and length of road.]]>
<![CDATA[Variasi Koefisien Kekasaran Manning (n) pada Flume Akrilic pada Variasi Kemiringan Saluran dan Debit Aliran ]]>
<![CDATA[Putro, Haryono]]>;
<![CDATA[Hadihardaja, Joetata]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8423
<![CDATA[Based on the book of open channels hydraulics by Ven T. Chow (1988) mentioned that the big problems in application Manning equation is determine of roughness coefficien n, because there is no certain way to choose value of n. At the current knowledge, choosing the actual value of n is estimated flow resistance on certain channels, that really can not be taken into specific value. The purpose of this study is experimentation to describe the differences Manning roughness coefficient (n) at the same material of channel by a different channel slope and discharge. The method used is by modeling the physical channel with a width of 15cm and depth of 20cm with akrilic material thickness of 0.5 cm. Flow in a channel by channel basis slope variation 0.0087; 0.0175; 0.0349 and 0.0524. With the discharge varies from 1 to 4.5 liters / sec. The results of the analysis showed there vairiasi n values between 0.006 to 0.032.]]>
<![CDATA[Studi Kelayakan Perlintasan Sebidang antara Jalan Kereta Api dengan Jalan Raya ]]>
<![CDATA[Aswad, Yusandy]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8430
<![CDATA[Development of road transport facilities very often forms a junction with railway transportation. Accidents between motor vehicles and railway crossings often occur on a level crossing. Purpose of this study is to provide recommendations plot proper of crossings according to Ministerial Decree No.53 of 2000 between the railways to the highway. Feasibility of level crossing can be observed from the speed of trains, the headway between trains that pass on a level crossing, highway class, alinment position. From analysis is seen level crossing feasible because it met the requirements: a single-speed railway with the next train passing by < 60 km/h, the time interval (head way) between trains one by one with the train and the next train passing on the location of more than six minutes, the highway is a road passing is highway class III A and not located on railroad arch over the street corner.]]>
<![CDATA[Pengaruh Faktor Motivasi dan Kepercayaan terhadap Kinerja melalui Komitmen pada Manajer Proyek Kontruksi dengan Pendekatan Structural Equation Modeling ]]>
<![CDATA[Sahadi, Sahadi]]>;
<![CDATA[Wibowo, M. Agung]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8419
<![CDATA[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.]]>
<![CDATA[Kapasitas Momen Maksimum Pondasi Tiang Pendek Silindris Akibat Beban Lateral pada Tanah Lempung dengan Metode Kurva P-Y ]]>
<![CDATA[Andriani, Utari Wessy]]>;
<![CDATA[Suhartatik, Ita]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8424
<![CDATA[For a certain structure, lateral loads are more dominant than vertical loads. A foundation with a lateral load is due to overturning force relying on good contact between the pile and the soil. This research is about a wll foundation or a rigid pile due to lateral loads on clay, using a cylinder pile model 85 mm diameter with various ratio length of pile (L/D) = 4 to 5 and ratio lies of load (e/L)=1,2 and 4. The results are: (1) Increasing ratio lies of load (e/L) so decreasing maximum lateral load (Pmax) can be supported by pile foundation, and the increasing maximum displacement and maximum moment. (2) Maximum deflection occur at surface soil with rotation point at average L/3 from bottom of pile, and maximum moment occur at L/3 from surface soil. (3) The maximum moment of result laboratory test are smaller than the maximum moments of result numeric analysis with consideration value between 1 to 1.5. These differences are caused by the influence of soil processing during laboratory test so they can influence the value of soil parameters. Based on consideration value, the prediction of maximum moment capacity by curve p-y method can be used in the design of pile foundation by considering the use of safety factor=2.]]>
<![CDATA[Analisa Perubahan Geometri Penampang Sungai Menggunakan HEC-6 untuk Menaksir Debit Sedimen pada Sungai Citanduy di Jawa Barat ]]>
<![CDATA[Wibowo, Hari]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8431
<![CDATA[Formation of river profile is basically a process in the regulation of the water itself. This arrangement is based on the carrying capacity of the river flow is determined by the parameters of the flow and sediment transport. To assist in observing changes in the riverbed need a software that can predict changes in the cross-sectional shape of river bed. In this study HEC-6 to be able to estimate the fundamental changes Citanduy River in West Java by using field data parameters are available in the form of cross-sectional geometry of the river, flow rates, water levels are high by peil scale or board might guess from observation stations Citanduy Rive. River cross section data used in 2007 were used for the calibration data. Calibration process used for 2008. While the software application used to view changes in the existing cross-sectional shape. Discharge used in this case amounted to 27.717 m3/second and high cross-section downstream on Rajagosi area of 10.40 m. Model selection is done with a relatively small deviation. Obtained from the model calibration process that both sides Karang Pucung-Pataruman-Rajagosi the Manning roughness number "n" of 0.060. Obtained from the literature for some natural channel meandering clean condition, there are ripples and found more stone figures, the Manning roughness ranged from 0.045 to 0.060.]]>
<![CDATA[Penatagunaan Kawasan Sekitar Waduk dalam Upaya Menjaga Kelestariannya (Model DAM) ]]>
<![CDATA[Nugroho, Hari]]>;
<![CDATA[Suripin, Suripin]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8420
<![CDATA[Kedungombo reservoir has provided a substantial contribution in improving the welfare of society, so that its existence should be preserved. As time goes there are some issues Kedungombo. The problems are concerning with the condition of reservoirs, dams and problems in the surrounding area. To preserve the reservoirs, conservation efforts by reviewing the management of the reservoir area. The study results showed that there was no master plan to utilize the management of Kedungombo catchment. For this reason, it is proposed the development of Kedungombo area is directed to recover the potential and cultivitation areas, to empower community and to strengthen the protected and cultivitation areas in order to concerved Reservoir. Kedungombo area is directed as a center of tourism services, housing, aquaculture and local protected areas. Reservoir area is specified to 500 meters from the boundary of the highest reservoir water level, so hopefully all the activities in this area follows specified to the regulations. It is recommended to develop an institution to manage Kedungombo Area. The institution should be able to implementation the principle of management i.e. transparency, open to various parties; can be accounted for; clarity the limits of authority, territory under the following management roles and responsibilities and apply the principles and legal norms in the management of the Area Kedungombo. The model is expected to be implemented and become a model for Reservoir Management in Indonesia.]]>
<![CDATA[Analisis Risiko pada Proyek Pembangunan Parkir Basement Jalan Sulawesi Denpasar ]]>
<![CDATA[Muka, I Wayan]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8425
<![CDATA[Construction of Basement Parking Sulawesi Road Denpasar is a government attempt to tackle congestion and parking problems in the city of Denpasar. This activity is highly correlated with the location of Badung Market. This study aims to identify risks arising, assess the level of acceptance of risk analysis, risk mitigation and ownership of dominant risk. The results showed 25 risks identified. Of the risks identified are 24 risk dominant with 5 risk category is unacceptable occurrence of accidents in the project, the landslide during basement excavation, the lack of security fence project that can cause accidents especially hazard fell during basement excavation, the damage caused by natural disasters and the workers were not using safety equipment. Additionally identified 19 risk category is undesirable, one acceptable risk category. Dominant risk is unacceptable risks do 11 mitigation measures such as building damage due to natural disasters (force majeure), which is also a risk with follow-up by reducing the risk that anticipated early preparing for disasters and transfer risk to another party by insuring the work to others. Ownership is the most dominant risk of the contractor. The parties should consider the risks unacceptable category and also should pay attention to the risks classified as undesirable.]]>
<![CDATA[Aplikasi Metode HVSR pada Perhitungan Faktor Amplifikasi Tanah di Kota Semarang ]]>
<![CDATA[Partono, Windu]]>;
<![CDATA[Irsyam, Masyhur]]>;
<![CDATA[Prabandiyani R.W., Sri]]>;
<![CDATA[Maarif, Syamsul]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8421
<![CDATA[The Horizontal-to-Vertical Spectral Ratio (HVSR) is a simple method for estimating the resonance frequency of sedimentary layers. This method can also be used for estimating the site amplification factor. By using the resonance frequency and the amplification factor HVSR method can also be used for predicting the depth of the bed rock or the thickness of sediment layer (Nakamura, 1989). This paper presents results of HVSR method applied to ambient vibrations for estimating the amplification factor of sedimentary layer. A total of 16 ambient vibration measurements were performed in the City of Semarang to predict the amplification factor for the shallow sedimentary layers.]]>
<![CDATA[Evaluasi Perubahan Tata Guna Lahan sebagai Upaya Menjaga Kerbelanjutan Fungsi Waduk ]]>
<![CDATA[Purboseno, Sentot]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8426
<![CDATA[The increasing incidence of floods and droughts from year to year, indicating the destruction of water catchment areas. Opening of the forest to the wake region will be lead to increase floods and droughts in the downstream region, so the level of water availability has declined. Evaluation characteristics of the catchment area as a manufacturers producing surface water and groundwater needs to be done, to assess changes in the characteristics of the catchment area, towards the conservation of water resources can be focused and on target. Because it is associatednwith water results, then evaluation characteristics of the catchment area is done with the approach flow parameters in rainfall models. One of the popular models used rain flow, especially in the Java is FJ.Mock models, this model was developed from research in several watersheds in Java. From the research to changes in catchment characteristics with Mock model approach to Rawapening Reservoir catchment, from year to year decreased infiltration parameter values, whereas the direct flow increased. Refers to changes in the characteristics of the DTA, conservation activities to be done is to increase the infiltration capacity and reduce flow area directly. While the analysis of land use change, forest area declined from year to year and the areas of increased impermeable.]]>
