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[Perbandingan Perkerasan kaku Pracetak dan Beton Konvensional dengan Menggunakan Analytical Hierarchy Process (AHP) ]]>
<![CDATA[Nuroji, Nuroji]]>;
<![CDATA[Setiadji, Bagus Hario]]>;
<![CDATA[Aktorina, Wahyu]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.31792
<![CDATA[The rigid pavement on many roads is considered as a solution due to the increasing traffic load that requires high performance and durability of the road construction. However, the implementation of rigid pavement takes a longer time to reach its concrete strength until the road operation. Some industries have developed pavement from precast concrete panels to reduce construction time. This paper discusses the comparison of rigid pavement between precast concrete and conventional concrete. Two road sections are Jalan Margomulyo Surabaya using precast-concrete-pavement and Jalan Semarang-Jambu using conventional-concrete-pavement chosen as research objects. Cost, construction time, serviceability, and traffic performance are the four variables reviewed in this study analyzed using the Analytical Hierarchy Process (AHP) method with considers 15 competent experts as respondents. Based on the analysis shows that a road improvement project by using precast-pavement is more effective and efficient with a score of 58.42 %, while the score of conventional concrete is 41.58 %.]]>
<![CDATA[Kajian Pelaksanaan Perbaikan Berkelanjutan Filosofi Kaizen pada Proyek Konstruksi di Indonesia ]]>
<![CDATA[Putri, Kartika Nur Rahma]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.23069
<![CDATA[Kaizen as a quality management system offers a new approach to increase productivity by improving existing production processes without investing in new tools/procedures. This study aimed to determine the application of continuous improvement in construction projects according to kaizen philosophy. The research was conducted using descriptive analysis to describe the process of continuous improvement in a construction project. Data were collected using a questionnaire method on 24 building and road projects and interviews with two contractors. This study's results indicate that the application of the kaizen principle in construction projects is still limited. The research reveals that project planning has been carried out but not entirely following field conditions, standardization of work methods already exists but not detailed, all parties in the project have been involved in the construction process, but initiatives to make improvements have not been seen because it is still focused on corrective evaluation and work completion. The challenges in implementing continuous improvement are the lack of a quality management system, lack of working time, lack of consistency in the implementation of quality, and lack of worker’s skill in carrying out work. Some improvements required to support continuous improvement are to encourage top management's role in the application of quality management systems and internalization of the kaizen principle to all workers. The involvement of all production elements in maintaining product's quality in the internal system also needs to be improved.]]>
<![CDATA[Kajian Kesesuaian Rumus Intensitas Hujan dan Kurva Intensitas Durasi Frekuensi (IDF) di Wilayah Kampus Universitas Brawijaya, Malang ]]>
<![CDATA[Harisuseno, Donny]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.31210
<![CDATA[Rainfall intensity known as an essential variable in rainfall-runoff transformation. Flood events occurred in 2017 at Brawijaya University campus caused by high intensity and landuse change in campus's internal and external environment. The study aims to examine performance of several empirical formulas  in estimating rainfall intensity, investigating characteristic of each empirical formula’s contant due to varying return period (Tr), and determining appropriate Intensity Duration Frequency (IDF) curve. The formula of Sherman, Talbot, and Ishiguro was employed to obtain empirical intensity, while intensity on varying return period was calculated using Log Pearson Type III. The proposed rainfall intensity formula was selected through comparison between empirical intensity with those from observation according to criteria of relative error (KR), Nash Sutcliffe Efficiency (NSE), and Peak Weight Root Mean Square Error (PWRMSE). The Sherman formula showed best performance in estimating rainfall intensity as indicated by low value of KR and PWRMSE, followed by NSE close to one. The constant of empirical formula “a†was directly proportional with increasing of Tr; conversely, constant “b†and “n†were inverse with Tr. The validation result of Sherman formula demonstrated that the formula showed good reliability, thus recommended to estimate intensity and IDF curve in the study area.]]>
<![CDATA[Analisis Aplikasi Kantong Lumpur pada Sungai Sebagai Upaya Pengendalian Sedimentasi Waduk ]]>
<![CDATA[Wulandari, Dyah Ari]]>;
<![CDATA[Ulfiana, Desyta]]>;
<![CDATA[Parmantoro, Priyo Nugroho]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.28691
<![CDATA[Sedimentasi waduk dapat diatasi dengan mengurangi jumlah sedimen yang masuk ke waduk, dengan membangun check dam. Akan tetapi check dam lebih banyak mengendapkan muatan sedimen kasar daripada muatan sedimen halus. Sedimen halus yang lolos dari check dam akan ikut aliran lebih lanjut dan akhirnya masuk ke dalam kolam waduk. Oleh karena itu perlu dibuat bangunan yang dapat menangkap sedimen halus. Konstruksi direncanakan seperti sistem kantong lumpur pada saluran irigasi. Tujuan dari penelitian ini adalah menganalisis kemungkinan pengaplikasian sistem bangunan kantong lumpur pada sungai untuk mengendapkan sedimen yang lolos dari chek dam. Analisis dimulai dengan pemilihan lokasi sedimen trap, kemudian dilakukan perhitungan dimensi sediment trap dan jumlah sedimen yang mengendap. Berdasarkan analisis pada dimensi yang dipilih dengan beberapa kombinasi gradasi butiran sedimen, pengendapan sedimen yang terjadi berkisar antara 42 – 68 %. Sehingga dapat disimpulkan pembuatan sedimen trap di sungai dapat dilakukan. Akan tetapi untuk pengaplikasian sedimen trap ini perlu penelitian lebih lanjut lagi terkait dimensi sedimen trap yang paling optimal mengendapkan sedimen.]]>
<![CDATA[Perbandingan Regulasi Fly Ash sebagai Limbah B3 di Indonesia dan Beberapa Negara ]]>
<![CDATA[Ekaputri, Januarti Jaya]]>;
<![CDATA[Bari, M. Shahib Al]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.30762
<![CDATA[This paper aims to encourage the Indonesian government to review the 2014 Government Regulation (PP) number 101 related to coal-ash. Fly ashes at power plants overload the landfills and requires complete handling solution. The utilization of fly ash in Indonesia are facing the issues, one of these is the categorization of fly ash as a hazardous waste. As a result, its utilization requires permissions from the ministry of environment and forestry. In this paper, a comparative study of fly ash classification as hazardous waste in India, United States of America, China and Vietnam was conducted. India and China are the coal importer from Indonesia. US regulation was once referred when drafting PP number 101. Vietnam is chosen as comparison in Southeast Asia. The Toxicity Characteristic Leaching Procedure (TCLP) results of fly ashes from 16 Indonesian power plants proved that their toxic content was lower than the TCLP parameters in the regulation. Acute Oral Toxicity Test (LD50) results showed that fly ash and bottom ash with dosage up to 7000 mg/kg did not cause fatalities. This study is a reference for the Indonesian government to verify the status of fly ash to be utilized as much as possible in various fields.]]>
<![CDATA[Analisis Stabilitas pada Lereng dengan Perkuatan Tanaman Vetiver Menggunakan Metode Elemen Hingga 3D ]]>
<![CDATA[Hamdhan, Indra Noer]]>;
<![CDATA[Pratiwi, Desti Santi]]>;
<![CDATA[Rahmah, Rizka Adisya Kamila]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.32003
<![CDATA[A landslide is the downslope movement of a soil mass or rock or debris of both (Bobrowski and Highlind, 2008). One of the measures to mitigate slope erosion that causes landslide is by applying bio-engineering system using a vegetation called Vetiver (Vetiveria Zizanioides). The purpose of this study is to analyze slope stability with a vegetation system using PLAXIS 3D software based on finite elements method and referring to the guidelines from the Ministry of Public Works and Housing with the title Guidelines for Vetiver Grass Planting for Surface Erosion Control and Prevention of Shallow Landslides on Road Slopes.The result shows that the deeper the Vetiver root modelled will increase the value of the safety factor, reinforcement using vegetation is effective on 30° slopes in PLAXIS 3D. The percentage increase in the value of the safety factior generated by PLAXIS 3D is 10.94%.]]>
<![CDATA[Kekuatan Geser Gelagar Pelat Linearly Tapered ]]>
<![CDATA[Yosep, Flosten]]>;
<![CDATA[Wijaya, Paulus Karta]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.30260
<![CDATA[Studi ini menganalisis perilaku geser gelagar pelat linearly tapered berpenampang I dan menentukan metode usulan untuk mengestimasi kekuatan gesernya. Studi ini terdiri dari 72 model gelagar pelat linearly tapered dengan sudut kemiringan berkisar antara 2° hingga 30°, tebal pelat badan 5 mm hingga 8 mm dan rasio a/h: 1; 1,25 dan 1,5. Keseluruhan model memiliki pelat badan yang langsing. Studi dilakukan melalui analisis metode elemen hingga dengan bantuan perangkat lunak ADINA 9.5. Keseluruhan model dimodelkan tertumpu sederhana dan diberikan dua variasi tipe beban geser, yakni yang menyebabkan aksi medan tarik diagonal pada arah diagonal pendek (Tipe I) dan diagonal panjang (Tipe II). Untuk tipe I, kekuatan gesernya dapat ditentukan dengan menggunakan persamaan kekuatan geser yang terdapat pada spesifikasi desain AISC 360-16, dengan menggunakan tinggi pelat badan terkecil. Sedangkan untuk tipe II, hasil analisis menunjukkan bahwa kekuatan gesernya menurun seiring dengan peningkatan sudut kemiringannya dan rasio . Berdasarkan hasill tersebut, faktor modifikasi untuk menentukan kekuatan geser gelagar pelat linearly tapered terhadap spesifikasi desain AISC 360-16 ditentukan.]]>
<![CDATA[Analisis Kerawanan Banjir sebagai Pendukung Perencanaan Model Water Sensitive Urban Design di Kabupaten Klaten ]]>
<![CDATA[Ulfiana, Desyta]]>;
<![CDATA[Windarto, Yudi Eko]]>;
<![CDATA[Bashit, Nurhadi]]>;
<![CDATA[Ristianti, Novia Sari]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.31929
<![CDATA[Klaten Regency is one of the regions that has a high level of flood vulnerability. The area of Klaten Regency which is huge and has diverse characteristics makes it difficult to determine an appropriate flood management model. Water Sensitive Urban Design (WSUD) is a model that focuses on handling water management problems with environmentally friendly infrastructure. Therefore, an analysis is carried out to determine the level of flood vulnerability and factors causing flooding to plan a WSUD design that is suitable for each sub-districts of Klaten Regency. The Analytical Hierarchy Process (AHP) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methods are used to help the analysis. Aspects used as criteria are rainfall, slope, soil type, geological conditions, and land use. Based on the analysis, it could be concluded that Klaten Regency has two sub-districts with high flood hazard category, 21 sub-districts with medium category, and three sub-districts with low category. Bayat and Cawas are sub-districts that have a high level of flood vulnerability category. Meanwhile, Kemalang, Karangnongko and Polanharjo are districts with a low level of flood vulnerability category. The main factors causing flooding in Klaten Regency are slope and land use.]]>
<![CDATA[Analisis Power-Interest Stakeholder terhadap Asuransi Bencana Infrastruktur Publik di Kota Semarang ]]>
<![CDATA[Hatmoko, Jati Utomo Dwi]]>;
<![CDATA[Putri, Dita Mentari]]>;
<![CDATA[Hermawan, Ferry]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.32086
<![CDATA[The use of disaster insurance for public infrastructure is still uncommon in Indonesia, including in Semarang. The success of the adoption of disaster insurance for public infrastructure is inevitably dependent on the acceptance of stakeholders. The aim of this study is to analyse the power and interest of stakeholders towards the use of disaster insurance for public infrastructure in Semarang. Data was collected via interviews and focussed group discussions with stakeholders of Semarang government officials, asset managers, users, etc. The power-interest grid of stakeholders divides the stakeholders based on their levels of power and interests, resulting in four categories, i.e. players, subjects, crowds, and context setters. This research identified the players are the Mayor, Regional Disaster Management Authority, and Regional Financial and Asset Management Authority (5.5%); the subjects category includes The Public Works Department of Human Settlements and Highways, Public Works Department, Trade Department, majority Public Health Center (40.7%); the crowds are Education Department and majority public schools (53.7%); and no context setters (0%). This study found that low trust in the insurer is a major factor causing a lack of interest in the use of insurance. The results of this study are valuable to understand the stakeholder map of Semarang city based on power and interest aspects, and serve as a basis for developing disaster insurance adoption strategies for public infrastructure.]]>
<![CDATA[Pengaruh Jarak Sekrup terhadap Kapasitas dan Perilaku Penampang Tersusun Boks (Closed Section) Baja Canai Dingin ]]>
<![CDATA[Making, Maria Yasinta Menge]]>;
<![CDATA[Awaludin, Ali]]>;
<![CDATA[Supriyadi, Bambang]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.31503
<![CDATA[The capacity and behaviour of cold-formed steel built-up sections are affected by the arrangement of the connections. This study aims to determine the effect of the screw spacing to the bending capacity and behaviour of the cold-formed steel built-up box section which made from lipped-channel (1.0 mm thick, 81 mm web height, 8.5 mm lip height, upper and lower wing width 38 mm and 40 mm). A total of 19 beams with a length of 1200 mm each are subjected to pure bending moments by applying two point loads spaced 600 mm in the midspan. The screw spacing variations in the moment span are 100 mm, 150 mm, 200 mm, 250 mm, 300 mm, 328 mm, and 350 mm. The test results show the average of bending capacity of the beam test is increasing with the reduction in screw spacing while the screw configuration also affects the beam capacity. Analysis of the bending capacity using the effective width method and the direct strength method based on AISI S100-16 gives very conservative results. The failure mode of the built-up box sections were observed in the form of local buckling, distortion, and lateral-torsional buckling. ]]>
