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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 393 Documents

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Analysis and Evaluation Change Order in Flexible Pavement (Case Study: Road Projects in East Kalimantan) Sulistio, Hendrik; Waty, Mega
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 16, Nomor 1, PEBRUARI 2008
Publisher : Department of Civil Engineering, Diponegoro University

Change Orders often occur in construction project, whether during early, middle, or late stage ofÂ project. The objectives of this research are to find types of work and construction stages where change orders often occur; average percentage of change order costs anda main causes of change order in flexible pavement project in East Kalimantan. Data for the research were obtained by first, distributing questionnares to project and field coordinators, contractors, and consultans working in Samarinda, East Kalimantan. The findings show thar cut and fill works in sub grade often experience change order. The main causes of change order are differences between drawing and site condition, design changes, and landslide. The average change orderâ€™s percentage is 28,26%. Meanwhile change order often occurred during the early phase of construction.Keywords : Change Order, Flexible Pavement, East KalimantanPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3664[How to cite: Sulistio, H. dan Waty, M. (2008), Analysis and Evaluation Change OrderÂ in Flexible Pavement (Case Study: Road Projects in East Kalimantan), Jurnal Media Komunikasi Teknik Sipil, Tahun 16, No. 1, pp. 31-47]

PENGARUH GEOTEKSTIL PADA KUAT DUKUNG PONDASI TELAPAK DI ATAS TANAH GAMBUT A, Rachman; S.A, Nugroho
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 17, Nomor 2, JUNI 2009
Publisher : Department of Civil Engineering, Diponegoro University

Constructions over soft peat soil cause many problems. Therefore, research is required to improved soils bearing capacity. This research study aims to know the increase of soils bearing capacity with geotextile-reinforcement at the peat soil to the constructions with square footing. Geotextile-reinforcement variations are depth and wide of geotextile-reinforcement layer and stress distribution angle. The result of the study show that the addition geotextile-reinforcement increase soils bearing capacity up to 3 times of the soils without reinforcement. This increasing equivalent with increasing of geotextile-reinforcement dimensions and reduce with increasing of the depth of geotextile-reinforcement layer. qu and su of peat soil at the research has a different value, range 30 â€“ 42 kPa for qu and 8 â€“ 11 kPa for su. This difference show that peat soil has the ability to return to the condition before it compressed in the short time. Keywords: Peat soil, geotextile, reinforcement, bearing capacity, square footing. ABSTRAK Pembangunan konstruksi di atas tanah gambut menimbulkan banyak masalah, untuk itu perlu dilakukan penelitian mengenai perbaikan tanah gambut agar diperoleh daya dukung yang cukup. Dalam penelitian ini diteliti pengaruh penggunaan geotekstil untuk perkuatan tanah gambut pada bangunan dengan pondasi dangkal dengan memvariasikan kedalaman dan lebar, serta bagaimana pengaruh sudut penyebaran tegangannya. Dari penelitian yang dilakukan diperoleh hasil bahwa penambahan lapisan geotekstil akan meningkatkan daya dukung hingga 3 kali lipat tanah tanpa perkuatan. Peningkatan daya dukung sebanding dengan penambahan dimensi perkuatan yang digunakan dan berbanding terbalik dengan penambahan kedalaman. Nilai qu berkisar antara 30 â€“ 42 kPa sedangkan su memiliki nilai antara 8 â€“ 11 kPa. Perbedaan nilai ini menunjukkan bahwa tanah gambut memiliki kemampuan untuk kembali mengembang (unloading) dalam waktu yang singkat. Kata kunci : tanah gambut, geotekstil, perkuatan, daya dukung, pondasi bujur sangkar.

Analisis Undang Undang yang Mengatur Jasa Konstruksi Indonesia Terhadap Pengguna dan Penyedia Jasa Konstruksi Putra, Andi Bayu; Sulistio, Hendrik
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 2, DESEMBER 2019
Publisher : Department of Civil Engineering, Diponegoro University

Construction Services Law is a statutory regulation that is used to regulate all matters involving construction services, whereas in this study conducted in Jakarta, Indonesia, Law No. 18 of 1999 about Construction Services and Law No. 2 of 2017 about Construction Services. With changes in the Construction Services Law, there are differences in the form of revisions, additions, and reductions. These differences and changes are analyzed with the aim of developing a better Construction Services Law in the future. The method used in this research is a literature study method and questionnaire survey method. Questionnaire questions were formed based on literature studies from previous research and Construction Services Law discussed in this study. Data obtained from respondents were entered into the IBM SPSS Statistics 23 program and then conducted a validity test, reliability test, correlation test, and regression analysis. The analysis shows that there are several Construction Services Lawâ€™s regulations which cannot be a good guide for construction service providers and users yet, due to: the provisions regarding building failures are not well explained, the general lack of provisions governing the selection of expert assessors, the lack of clarity governing labor standards construction work and unclear regulations regarding sanctions for parties involved in construction work.

Study Kasus Deformasi Plastis Nono, Nono; Yamin, R. Anwar
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 1, Edisi XXXI, PEBRUARI 2005
Publisher : Department of Civil Engineering, Diponegoro University

In genelar, defect in the flexible pavement on road links which heavy loaded traffic and have high temperature is plastic deformation. This paper discusses some causes of plastic deformation occurred in the field and some factors that effect occurring plastic deformation. Plastic deformation found in the field is effect of bad design gradation and of high bitumen content as caused mix design without void in mix at refusal density. Plastic deformation with rut depth is less than 20 mm, displacement or shear occurred on the wearing course (ACWC). In spite of rut depth is more than 20 mm, displacement or shear also occurred on the second layer or binder course (ACBC). Base on rut depth above, so we can used as a guide for determining of asphalt layer is should be scraped or repaired. Giving attention for example to consider void in mix at refusal density on mix design and the uses of asphalt mixtures which relatively high stiffness can reduce plastic deformation.Keywords: flexible pavement, plastic deformationPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3896[How to cite: Nono dan Yamin, R.A., 2005, Study Kasus Deformasi Plastis, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 1, pp. 48-59]

HUBUNGAN ANTARA PERBAIKAN GRADASI PASIR LOKAL DENGAN KUAT TEKAN DAN BIAYA BETON DI KEPULAUAN KARIMUN JAWA Endroyo, Bambang
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 11, Nomor 1, Edisi XXV, PEBRUARI 2003
Publisher : Department of Civil Engineering, Diponegoro University

Nowdays, civil work needs concrete in larger quantities, because it has several benefit characters. Karimunjawa Islands which is located on Java Sea, 90 kilometers North of Jepara and which has been becoming a developing tourism site, needs concrete building for infrastructure. Karimunjawa sand is not eligible for building structure, so a qualified guarantied concrete is very expensive because must use Java sand which must be brought up by ship. It is necessary to use some local material in large quantities for getting an economic concrete price. This research attempts to substitute Muntilan sand by gradual increasing in composition to get a qualified â€“economic concrete, and will find its relation to the cost. The substitution values starts from 0% to 100%. The mix-composition is 1:1.5:2.5, wcf 0.5, cement from Gresik company, and coarse aggregate from Karimunjawa (local) and from Jepara. Water from Karimunjawa. The price of material and labour wage are prevailed when research is being done. The result are: there is a relation between improvement of sand gradation with both of quality and cost of concrete. The larger the composition of substitution, the higher quality and the more expensive its cost becames. In the quality from fcâ€™ 8.4 MPa tp 14.1 MPa, concrete using local crushed stone was 8.43% cheaper than concrete using Jepara crushed stone.

Keruntuhan Perancah Scaffolding Saat Pelaksanaan Pengecoran Sumargo, Sumargo; Nata, Ario Raja
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 1, Edisi XXXIV, PEBRUARI 2006
Publisher : Department of Civil Engineering, Diponegoro University

In the construction process either for multy story building or structure with large horizontal coverage area, the selection of formwork construction is very essential. The acceleration of assemblying â€“ deassemblying â€“ reassemblying and re-use of formwork become one of the alternatif selection for the type of formwork. Analysis of the formwork subject to service load (self weight and impact load) is compulsory to avoid unexpected failure. Selection of the best construction method and site conditioning according to the design, especially for pouring the concrete in a sloping area, is very crucial since it does not only influence time construction, but also type of material, equipment, and service load during the construction. Analysis method used was comparing service load (self weight and impact load) to scaffolding capacity provided by the manufacture. Keywords: scaffolding, pipe support, horry beamPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3929[How to cite: Sumargo dan Nata, A.R., 2006, Keruntuhan Perancah ScaffoldingÂ SaatÂ Pelaksanaan Pengecoran, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 1, pp. 1-12]

Perubahan Pola Pergerakan pada Simpang Kalibanteng akibat Penerapan Manajemen Dua Arah pada Flyover Wicaksono, Y I; Indriastuti, Amelia Kusuma; Riyanto, Bambang
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 1, JULI 2017
Publisher : Department of Civil Engineering, Diponegoro University

Kalibanteng Intersection is one of primary node in west part of Semarang City. It is a signalized intersection which shaped roundabout. It lies on the truck track from west to east of Java Island, which is crossed over by Flyover Yos Sudarso â€“ Siliwangi and Flyover Sudirman â€“ Siliwangi. Formerly, the flyover is designed for Siliwangi â€“ Yos Sudarso vice versa. The flyover could decrease truck volume from east to west, on the contrary heavy vehicle movement is still overburden Kalibanteng Intersection capacity. On 2018, it is planned that Ahmad Yani Airport access road will be diverted. Thus, it is important to increase Kalibanteng Intersection performance, and accommodate the airport access divertion plan at a time. This research is aimed to identify the existing movement pattern at Kalibanteng Intersection, to evaluate the existing signalized intersection performance, to develop a simulation of two way management on Kalibanteng Flyover, to analyze the movement pattern due to the implementation of two way management on the flyover, and to analyze the signalized intersection due to this management. The results show that the highest movements in Kalibanteng Intersection are the movement from Siliwangi to Yos Sudarso (which is dominated by heavy vehicle) and from Siliwangi to Sudirman (which isi dominated by light vehicle and motorcycle), and will keep on increasing in the future. These movement greatly contribute on intersection performance. This shows that the utilization of the flyover for two-way movement can be considered with mode type limitation. Using two-way flyover, the performance of Kalibanteng signalized intersection will increase.

LABORATORY TESTING AND MODELING THE INTERFACIAL TRANSITION ZONE OF SLAG-CONCRETE Lie, Han Ay; Nuroji, Nuroji
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 17, Nomor 3, OKTOBER 2009
Publisher : Department of Civil Engineering, Diponegoro University

The transition zone at the aggregate surface has a distinctive formation, in terms of its mechanical as well as its physical properties. This layer is recognized as the ITZ (Interfacial Transition Zone) and considered the â€œweak linkâ€, since micro cracks are commonly initiated in this area. The properties of this ITZ are jet to be investigated. SEM (Scanning Electron Microscope) images only provide qualitative information such as formation, type and relative amount of crystals. Therefore, other means are required to represent a better understanding to the behavior of the ITZ. The mechanical and physical properties of the ITZ are highly influenced by the differentiation in porosity and strength. A mathematical or FEM (Finite Element Model) can be used to bridge this lack of information. This paper deals with the the modeling approach of ITZ as well as the concept of laboratory testing for validation of the model. Keywords: labour group composition, SNI 2002, field labourâ€™s productivity, middle-class housing. ABSTRAK Daerah peralihan antara agregat dan mortar memiliki susunan struktur dan sifat mekanis yang berbeda dengan mortar yang berjauhan dari agregate. Daerah ini dikenal sebagai ITZ (Interfacial Transition Zone) dan diketahui sebagai daerah yang â€œlemahâ€ karena retak mikro biasanya diawali di ITZ ini. Perilaku mekanis ITZ sangat sulit ditentukan secara tepat, pengamatan menggunakan SEM (Scanning Electron Microscope) hanya dapat memberikan gambaran secara kualitatif, berupa perilaku bentuk, susunan dan jumlah kristal sehingga perlu adanya pendekatan lain yang dapat memberikan nilai kuantitatif terhadap perilaku ITZ. Pengamatan terhadap sifat mekanis dan fisis ITZ terhadap mortar menunjukkan perbedaan kadar pori dan kekuatan. Untuk menggambarkan konfigurasi pori dan kekuatan ITZ dapat digunakan model, baik model matematis atau FEM (Finite Element Model) yang divalidasi dengan hasil pengujian laboratorium. Tulisan ini membahas konsep permodelan ITZ serta metoda validasi di laboratorium. Kata kunci: model, interfacial transition zone, mortar, aggregate, kekakuan

Pengaruh Penggunaan Pasir Pantai terhadap Sifat Marshall dalam Campuran Beton Aspal Kusharto, Harry
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 12, Nomor 3, Edisi XXX, OKTOBER 2004
Publisher : Department of Civil Engineering, Diponegoro University

Penggunaan bahan batuan beku yang terus menerus menyebabkan semakin sulit untuk didapatkan, oleh karena itu perlu dicari alternatif lain sebagai pengganti. Pemanfaatan pasir pantai sebagai pengganti agregat halus untuk campuran beton aspal belum pernah dilakukan. Hasil penelitian menunjukkan bahwa pasir pantai dapat digunakan sebagai bahan campuran beton aspal dengan kadar aspal optimum 5,32% dengan nilai (stabilitas, flow, VITM,Â VMA, VFWA, dan MQ) memenuhi standar Bina Marga. Kata Kunci: Beton Aspal, Pasir Pantai, Sifat MarshalPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/2785[How to cite: Kusharto, H., 2004, Pengaruh Penggunaan Pasir Pantai terhadap Sifat Marshall dalam Campuran Beton Aspal, Jurnal Media Komunikasi Teknik Sipil, Volume 12, Nomor 3, pp. 91-99]

Meningkatkan dan Mempertahankan Tingkat Layanan Prasarana Air Sangkawati, Sri
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 18, Nomor 1, PEBRUARI 2010
Publisher : Department of Civil Engineering, Diponegoro University

The main problems of infrastructure in Indonesia, including infrastructure in the water sector is the shortage of funds for its construction, and infrastructure services need to be increased to compensate for population growth. Two of these are issues concerning the contradiction, so that one policy that needs to be taken is to maintain existing service levels and funds for operation and maintenance of infrastructure necessary to provide adequately, including by developing sources of funds derived from service contribution. Operations and maintenance funding sources to maintain the level of infrastructure services is charged to the user needs to be developed a good amount of acceptance and methods of calculating the contribution of each user. Methods for determining the allocation of funds to be charged to users who receive services from the infrastructure, can not be determined only by the quantity of water delivery for each purpose, but alsoÂ based on the Â benefit of all water users. Keywords : hydraulic infrastructure, founding source for O&M, service charge Â Abstrak Â Permasalahan utama infrastruktur di Indonesia termasuk infrastruktur di sektor air adalah keterbatasan dana untuk pembangunannya, dan perlu peningkatan pelayanan sarana prasarana guna mengimbangi pertumbuhan jumlah penduduk. Dua hal tersebut merupakan permasalahan yang kontradiksi, sehingga salah satu kebijakan yang perlu ditempuh adalahÂ mempertahankan tingkat pelayanan yang ada dan dana untuk operasi dan pemeliharaan prasarana perlu disediakan secara memadai, diantaranya dengan mengembangkan sumber dana yang berasal dari kontribusi pelayanan. Sumber dana operasi dan pemeliharaan untuk mempertahankan tingkat layanan prasarana yang dibebankan kepada pengguna perlu terus dikembangkan baik jumlah penerimaannya maupun metode perhitungan besarnya kontribusi masing-masing pengguna. Metode untuk menentukan besarnya alokasi dana yang akan dibebankan kepada kelompok pengguna yang menerima pelayanan dari prasarana keairan tidak dapat ditentukan hanya berdasarkanÂ volume besarnya air saja., melainkan harus berdasarkan juga analsisis nilai manfaat dari seluruh penerima pelayanan prasarana keairan. Kata-kata Kunci : prasarana air, sumber dana O&P, jasa layanan

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