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INDONESIA
MEDIA KOMUNIKASI TEKNIK SIPIL
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 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.
Arjuna Subject : -
Articles 471 Documents
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Perbandingan Regulasi Fly Ash sebagai Limbah B3 di Indonesia dan Beberapa Negara Ekaputri, Januarti Jaya; Bari, M. Shahib Al
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (28.154 KB) | DOI: 10.14710/mkts.v26i2.30762

Abstract

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.
Analisis Stabilitas pada Lereng dengan Perkuatan Tanaman Vetiver Menggunakan Metode Elemen Hingga 3D Hamdhan, Indra Noer; Pratiwi, Desti Santi; Rahmah, Rizka Adisya Kamila
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (869.677 KB) | DOI: 10.14710/mkts.v26i2.32003

Abstract

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%.
Kekuatan Geser Gelagar Pelat Linearly Tapered Yosep, Flosten; Wijaya, Paulus Karta
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (816.035 KB) | DOI: 10.14710/mkts.v26i2.30260

Abstract

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.
Analisis Kerawanan Banjir sebagai Pendukung Perencanaan Model Water Sensitive Urban Design di Kabupaten Klaten Ulfiana, Desyta; Windarto, Yudi Eko; Bashit, Nurhadi; Ristianti, Novia Sari
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (575.6 KB) | DOI: 10.14710/mkts.v26i2.31929

Abstract

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.
Analisis Power-Interest Stakeholder terhadap Asuransi Bencana Infrastruktur Publik di Kota Semarang Hatmoko, Jati Utomo Dwi; Putri, Dita Mentari; Hermawan, Ferry
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (274.944 KB) | DOI: 10.14710/mkts.v26i2.32086

Abstract

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.
Pengaruh Jarak Sekrup terhadap Kapasitas dan Perilaku Penampang Tersusun Boks (Closed Section) Baja Canai Dingin Making, Maria Yasinta Menge; Awaludin, Ali; Supriyadi, Bambang
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1299.506 KB) | DOI: 10.14710/mkts.v26i2.31503

Abstract

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. 
Pengaruh Kekangan Carbon Fiber Reinforced Polymer pada Beton Self Compacting Menggunakan Agregat Kasar Daur Ulang terhadap Perilaku Beton Sapeai, Martinus Pramanata; Tjondro, Johannes Adhijoso
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (564.511 KB) | DOI: 10.14710/mkts.v26i2.29213

Abstract

Pemanfaatan limbah beton yang telah didaur ulang (RCA) sebagai alternatif pengganti agregat kasar alami dalam eksperimen ini sesuai dengan konsep konstruksi berkelanjutan, dengan metode beton memadat sendiri. Konsep pembuatan benda uji sesuai kondisi ril di lapangan, di mana agregat tidak melalui proses pembersihan. Perkuatan elemen beton menggunakan serat yang diberi beban secara aksial telah banyak diimplementasikan baik yang dikekang secara menyeluruh maupun yang dikekang secara parsial. Terdapat tiga varian mix design dengan kekuatan tekan rata-rata 28 hari yang disyaratkan masing-masing 24, 28 dan 32 MPa. Terdapat tiga varian carbon fiber reinforced polymer (CFRP) sebagai kekangan pada silinder beton masing-masing adalah kekangan 50, 75 dan 100%. Uji eksperimental ini menunjukkan bahwa konsep SCC-RCA menggunakan ACI 211.1 memenuhi syarat. Pengaruh kekangan CFRP pada kekuatan tekan beton SCC-RCA yang dikekang satu lapis CFRP menghasilkan persamaan sebagai berikut fcc’=fc’+3,7fl.
Studi Penentuan Nilai Curve Number DAS Pataruman berdasarkan Satuan Peta Tanah Indonesia Ramadan, Anri Noor Annisa; Nurmayadi, Dicky; Sadili, Anwar; Solihin, Rega Rizaldy; Sumardi, Zefri
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (53.205 KB) | DOI: 10.14710/mkts.v26i2.26563

Abstract

Model curah hujan-limpasan umumnya digunakan dalam perhitungan debit banjir. Salah satu metode yang paling sering digunakan untuk memperkirakan debit banjir di DAS adalah NRCS-CN. Penelitian ini ditujukan untuk menentukan nilai CN dengan/tanpa kapasitas drainase tanah dari informasi tanah di SPT Indonesia. Lokasi yang digunakan adalah DAS Pataruman dengan mengkalibrasi hasil debit simulasi dengan debit pengamatan. Kondisi tanah di DAS Pataruman menunjukan bahwa tekstur tanah memiliki tekstur halus (HSG D), tekstur agak halus (HSG C), dan tekstur agak kasar (HSG A). Nilai CN komposit rata-rata di DAS Pataruman tanpa kapasitas drainase tanah adalah 85,58 sedangkan dengan kapasitas drainase tanah adalah 81,01. Hasil dari analisis menunjukan bahwa dengan/tanpa memperhitungkan kapasitas drainase tanah di DAS Pataruman tidak menunjukan perbedaan debit yang signifikan dengan koefisien relasi 0,734 (tanpa kapasitas drainase tanah) dan 0,732 (dengan kapasitas drainase tanah). Perhitungan CN dengan/tanpa kapasitas drainase tanah direkomendasikan untuk DAS kecil.
Kajian Faktor-Faktor Penyebab Rendahnya Kinerja Mutu pada Proyek Konstruksi di Provinsi Aceh Rauzana, Anita; Usni, Dwi Andri
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.611 KB) | DOI: 10.14710/mkts.v26i2.24065

Abstract

Meningkatnya jumlah perusahaan konstruksi pada industri konstruksi harus diikuti dengan meningkatnya mutu suatu proyek konstruksi. Proyek konstruksi yang sukses merupakan proyek konstruksi yang selesai tepat waktu, biaya ekonomis, serta mencapai mutu sesuai perencanaan. Mutu yang sesuai spesifikasi perencanaan dipengaruhi oleh beberapa faktor, untuk itu perlu dilakukan penelitian untuk mengidentifikasi faktor tersebut sehingga dapat diketahui faktor penyebab rendahnya kinerja mutu yang sangat berpengaruh pada proyek konstruksi. Tujuan penelitian ini adalah untuk mengidentifikasi faktor-faktor penyebab rendahnya kinerja mutu yang paling dominan. Metode yang digunakan untuk meninjau faktor faktor yang mempengaruhi kinerja mutu proyek adalah metode statistik deskriptif. Berdasarkan hasil penyebaran kuesioner dan analisis pengolahan data, maka didapat lima faktor penyebab rendahnya kinerja mutu yang sangat berpengaruh pada proyek konstruksi, yaitu faktor perubahan lingkup pekerjaan, kualitas material buruk, kesalahan desain, mutu peralatan buruk, dan kurangnya keahlian tenaga kerja.
Pengaruh Substitusi Semen dengan Semen Slag pada Mortar terhadap Kebutuhan Air dan Waktu Ikat, dan Peningkatan Kuat Tekan Mortar pada Umur 14 hari dan 28 Hari Adi, Rudi Yuniarto; Rizqi, Safira Yulia; Subagyo, Sie Alexander Patrick; Han, Ay Lie
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2, DESEMBER 2020
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (392.702 KB) | DOI: 10.14710/mkts.v26i2.31691

Abstract

The use of industrial waste as a component of nowadays building material has become of major importance due to the underlining of environmental and sustainability issues. Among these materials is Ground Granulated Blast Furnace Slag (GGBFS), often referred to as slag-cement. The material is a residue produced during the steel refining process. The cementitious nature of the product makes it most suitable for ordinary Portland cement (PC) substitution. However, the behavior of this slag-cement in terms of development time and strength has not been defined in great details. In the construction industry, time is of major importance, a prolonged hydration process could delay the overall process. This research work focused on the setting time and strength response of slag-cement in mortar. The ratio of mortar constituent of cement-to-sand was 1 : 3. The percentage of slag-cement substitute to PC was 0%, 25%, 50% and 75% to the cement weight. The compressive strength was tested at the age of 14 days and 28 days. The results of the analysis showed that at a 25% slag-cement substitution a very significant increase in strength was shown. The increase was more pronounced at the age of 28 days when compared to 14 days and recorded to be 31.90%. As for the 50% and 75% slag-cement substitution, no significant increase in strength improvement was noticed. The test results showed a 2.66% enhancement for the 50% slag- cement substitution and a 2.45% increase for a 75% slag-cement replacement. The study also showed that slag-cement required a higher water-cement factor for the normal consistency

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