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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 471 Documents

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Kinerja Pemberlakuan Standar Mutu Perkerasan pada Peningkatan dan Pemeliharaan Jalan Nasional â€“ Propinsi Mulyono, Agus Taufik
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 3, Edisi XXXVI, OKTOBER 2006
Publisher : Department of Civil Engineering, Diponegoro University

National and provincial road networks are a part of transportation infrastructure having very significant role for improving economic condition of a region due to its potential for providing wider mobility and higher accessibility between nodes in the region than district road networks. Consequently, the development of national and provincial roads should be based on tight implementation of quality standard for achieving stable road pavement. However, in current practices, there are evidences indicating no correlation between increased investment on national and provincial roads with the improved road quality in various regions though the road development uses an identical standard of quality manual. It is, therefore, very important to study performance of the quality manual standard implementation on road maintenance and betterment. The objectives of the research are to identify underlying problems and inappropriate practices of implementation procedure of pavement quality standard and to understand root causes of road deterioration occurred before the expected period of its life service. The research used a questionnaire survey completed objectively by respondents as with their expertise and experiences on road engineering. The respondents consist of 251 practitioners and experts selected through purposive method from 28 provinces representing the government staff of Public Work Department, supervision and consulting engineers, contractors and academic staff of universities. Furthermore, the questionnaires were compiled and analyzed by using descriptive statistical method. Findings of the research show that the underlying problems of the implementation of quality manual standards are predominated by low quality of human resources, inadequate utilization of testing instrument, and insufficient understanding of quality standards as well as poor coordination between implementation and supervision institutions. The substandard quality of road pavement mainly occurred due to low quality of the materials, inappropriate method of quality testing, improper construction method and insufficient field supervision. It was found that pavement deterioration in the beginning of road operation period is not caused by overloaded traffic but mainly due to inappropriate implementation of quality standards. This is regarded as no proper socialization of quality standards by government institutions for engineers, contractors and supervisors and their understanding on the road development is only focused on contract documents. Keywords: quality standard, implementation, road pavement, road maintenance, road betterment ABSTRAK Penanganan jalan nasional dan propinsi tidak terlepas dari penerapan standar mutu untuk mencapai kualitas perkerasan jalan yang mantap. Jalan nasional dan propinsi memiliki peranan yang amat penting terhadap peningkatan ekonomi wilayah karena berfungsi menyediakan mobilitas dan aksesibilitas antar simpul wilayah yang lebih luas daripada jalan kabupaten. Pada saat ini,Â fakta mengindikasikan tidak adanya korelasi antara peningkatan investasi penanganan jalan nasional dan propinsi dengan peningkatan kemantapan perkerasan jalan meskipun standar mutu perkerasan yang digunakan sama, sehingga perlu dilakukan penelitian kinerja pemberlakuan standar mutu perkerasan pada peningkatan dan pemeliharaan jalan. Tujuan penelitian adalah mendeskripsiskan kendala dan penyimpangan pemberlakuan standar mutu perkerasan jalan serta penyebab kerusakan jalan yang sering terjadi di bawah umur pelayanan. Instrumen penelitian berupa formulir survai (kuesioner) yang harus diisi secara obyektif dengan memepertimbangkan kepakaran dan pengalaman respondenÂ di bidang teknik jalan. Responden terdiri dari para pakar (expert) yang ditentukan secara purposive yang tersebar di 28 propinsi pada instansi kantor P2JJ dan litbang, kantor dinas pekerjaan umum, konsultan supervisi, kontraktor dan perguruan tinggi. Selanjutnya data terkumpul dikompilasi dan dianalisis secara statistik deskriptif. Jumlah responden (pakar) yang mengisi formulir survai sebanyak 251 orang. Hasil penelitian menunjukkan bahwa kendala implementasi standar mutu didominasi oleh kekurangan kualitas SDM, keterbatasan utilisasi alat uji, kesulitan memahami substansi standar mutu, dan lemahnya koordinasi antara pelaksana pekerjaan dan pengawas mutu. Selain itu disimpulkan penyimpangan mutu perkerasan yang sering terjadi adalah: (i) mutu material kurang tepat; (ii) metode pengujian mutu kurang tepat; dan (iii) prosedur implementasi metode pelaksanaan dan pengawasan di lapangan tidak tepat. Penyebab kerusakan perkerasan jalan pada awal operasional, tidak semata-mata disebabkan oleh kendaraan overloading tetapi lebih didominasi tidak tercapainya pemberlakuan (implementasi) standar mutu yang tepat di lapangan. Permasalahan lainnya adalah kurangnya sosialisasi standar mutu yang dilakukan oleh instansi pembina terhadap pelaksana dan pengawas mutu di daerah dan pemahaman mereka terbatas pada dokumen kontrak.Kata kunci: standar mutu, pemberlakuan, perkerasan jalan, pemeliharaan jalan, peningkatan jalanPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3956[How to cite: Mulyono, A.T., 2006, Kinerja Pemberlakuan Standar Mutu Perkerasan pada Peningkatan dan Pemeliharaan Jalan Nasional â€“ Propinsi, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 3, pp. 309-328]

Indeks Stakeholders Pengelolaan Daerah Aliran Sungai dengan Pendekatan KISS di Indonesia Sriyana, Ignatius
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 24, Nomor 1, JULI 2018
Publisher : Department of Civil Engineering, Diponegoro University

Integrated watershed management (IWM) using KISS (coordination, integration, synchronisation, and synergy) method is believed to be the answer for problems lingering the integrated watershed management in Indonesia. How successful the management is depends on how capable of stakeholders are to performing coordination, integration, synchronisation, and synergy in managing the watershed. This study aimed at measuring the rates of coordination, integration, synchronisation, and synergy performed by each stakeholder by applying an "Index Rate" instrument. Research findings revealed that, simultaneously, the coordination, integration, synchronisation, and synergy obtained by the watershed management stakeholders resulted in a moderate rate (71.4). Partially, the rates obtained were as follows: moderate coordination (72.69); moderate integrity (72.50); moderate synchronisation (70.34); and moderate synergy (70.05).

Effect of Construction Labour Group Composition on Optimal Field Labourâ€™s Productivity in Malang- East Java Tjaturono, Tjaturono
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 18, Nomor 1, PEBRUARI 2010
Publisher : Department of Civil Engineering, Diponegoro University

One of the main factor which determines the labour productivity is the labour group composition. In Indonesia, the cost estimate of construction labour uses the labour groups of the productivities in Indonesian National Standard 2002 (SNI 2002) and itsmodofocation. However, using these productivities is not efficient and effective. This paper intens to detemnine the ideal labour group composition, the equivalent coefficient and the difference between the actual productivities and the productivities of SNI 2002. The research methodology used consist of field observation and interview with 240 labour groups of various compositions in the construction of middle-class houses in Malang, East Java. The data were processed by descriptive statistics and statistical test for mean differences. The result of this research shows that the ideal composition for floor tile laying, sawn form work, and concrete pouring are: 1 tiler: 2 labours, and 1 mason:4 labours respectively, the equivalent coefficients for various labour group compositions are obtained. The differences between the field productivities and the productivities of SNI 2002 for tile laying, sawn form work and concrete pouring are 286%, 114.8%, and 18% respectively. Keywords : Labour group composition, SNI 2002, field labourâ€™s productivity, middle-class housing. Â Abstrak Â Salah satu faktor utama yang menentukan produktivitas tenaga kerja adalah komposisi kelompok kerja. Di Indonesia, estimasi biaya tenaga kerja konstruksi menggunakan komposisi kelompok kerja produktivitas Standar Nasional Indonesia (SNI) 2002 dan modifikasinya. Namun penggunaan produktivitas ini tidak efisien dan efektif. Tulisan ini bertujuan untuk menentukan komposisi kelompok kerja yang ideal, koefisien penyetaraan serta perbedaan produktivitas actual terhadap produktivitas SNI 2002. Metode penelitian yang dipakai adalah observasi lapangan dan wawancara terhadap 240 komposisi kelompok kerja pada pembangunan rumah menengah di Malang Jawa Timur. Data diolah secara statistic deskriptif dan statistical test for a mean differences. Dari hasil penelitian ini diperoleh komposisi kelompok kerja yang ideal untuk pasang tegel lantai, belisting dan pengecoran beton adalah: 1 tukang tegel: 2 pekerja, 1 tukang kayu:1 Â½ pekerja dan 1 tukang batu: 4 pekerja. Diperoleh juga koefisien penyetaraan untuk berbagai komposisi kelompok kerja. Serta perbedaan produktivitas lapangan terhadap SNI 2002 untuk pekerjaan pasang tegel, belisting dan pengecoran beton sebesar 286%, 114,8% dan 18%. Kata-kata Kunci : Komposisi kelompok kerja, SNI 2002, Produktivitas tenaga kerja lapangan, Rumah menengah.

Kualitas Beton SCC dengan Substitusi Agregat Halus Tailing Tambang Emas Daerah Pongkor Amalia, Amalia; Riyadi, Muhtarom
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1, JULI 2019
Publisher : Department of Civil Engineering, Diponegoro University

This paper presents the results of self compacting concrete (SCC) with water cement ratio 0.30 with four variations of tailings, ie 0%, 5%, 10% and 15%. Superplastisizer used is a type Naptha 511P of PT.Karya Naptha Belide. The results showed that (1) The use of tailings as fine aggregate in concrete SCC, has good workability. The fresh concrete that uses tailings, passing ability and filling ability is decrease. The use of tailings up to 15% of eligible properties filling ability and passing ability of SCC, (2) The more tailings used in SCC, setting time of concrete becomes longer, (3) Concrete with tailings as fine aggregate have unit weight is smaller than the concrete with fine aggregate sand, (4) Concrete with tailings has higher compressive strength and modulus of elasticity than concrete without tailings, (5)The use of tailings in concrete can lower tensile strength of concrete, (6)The optimum replacement of tailing found to be 10% in the concrete.

Nilai Modulus Geser Tanah Berdasarkan Rumus Hardin & Drnevich (1972) dan Menard (1965) Purwanto, Edy
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 16, Nomor 3, OKTOBER 2008
Publisher : Department of Civil Engineering, Diponegoro University

Due to ground-shaking during an earthquake, a cyclic shear stress will be imposed to the soil element. Shear modulus of soil is one of the soil parameters that should be recognized to transmite the vibration. Based on the laboratory tests, the value of shear modulus of soil (Gmax) is calculated using the formula developed by Hardin & Drnevich (1972) and Menard (1965). The research shows that sandy clay Salaman has Gmax = 6,942 Mpa (Hardin & Drnevich,1972) and 15,95 Mpa (Menard,1965), for silty clay Mertoyudan, Gmaks= 5,461 Mpa (Hardin & Drnevich,1972) and 14,83 Mpa (Menard,1965), for clay sand Krasak, Gmaks=12,942 Mpa (Hardin & Drnevich, 1972)Â and 28,09 Mpa (Menard, 1965). Keywords: Shear modulus, Soil, Earthquake, Stress, Strain, Laboratory test. ABSTRAK Perambatan getaran selama gempa bumi berlangsung/terjadi, menyebabkan tegangan geser siklik pada elemen tanah. Modulus geser tanah adalah merupakan salah satu parameter tanah yang harus diketahui untuk menjalarkan getaran akibat gempa bumi. Berdasarkan pada uji laboratorium, nilai modulus geser tanah (Gmax) didapatkan dengan menggunakan formula yang dikembangkan oleh Hardin & Drnevich (1972) dan Menard (1965). Hasil penelitian menujukan bahwa tanah lempung kepasiran Salaman mempunyai Gmak = 6,942 Mpa (Hardin & Drnevich,1972) dan 15,95 Mpa (Menard,1965), untuk tanah lempung kepasiran Mertoyudan didapat Gmak = 5,461 Mpa (Hardin & Drnevich,1972) dan 14,83 Mpa (Menard,1965), sedangkan untuk tanah pasir kelempungan Krasak didapat Gmak = 12,942 Mpa (Hardin & Drnevich,1972) dan 28,09 Mpa (Menard,1965).Kata kunci: Modulus geser, Tanah, Gempa Bumi, Tegangan, Regangan, Uji laboratoriumPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3700[How to cite: Purwanto, E. (2008), Nilai Modulus Geser Tanah Berdasarkan Rumus Hardin & Drnevich (1972)Â dan Menard (1965), Jurnal Media Komunikasi Teknik Sipil, Tahun 16, Nomor 3, pp. 279-290]

Perilaku Beban-Perpindahan Aksial Pre-Buckling dan Post-Buckling pada Struktur Kolom Elastis Sumirin, Sumirin
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 20, Nomor 1, JULI 2014
Publisher : Department of Civil Engineering, Diponegoro University

The analysis of column buckling is generally based on the analysis of linear eigenvalue problem to obtain the buckling load. In the linear analysis we do not know the load-displacement behavior especially after buckling occurs. This research studied the behavior of the elastic column on the stage pre-buckling and post-buckling by finite gemetrically nonlinear of finite element method. Difficulties in equilibrium problem at around the point of buckling load solved by using the Newton-Raphson incremental method with constant arc- length technique. To generate the initial touch of buckling columns are very small lateral load or by providing the initial lateral deformation is very small. Axial load-displacement curve column finite element analysis results compared to the results of previous reseacher. An axial load-displacement curve bilinear proposed in this study.

Volume Angkutan Sedimen Dipengaruhi oleh Kecepatan Aliran (Kajian : Laboratorium) Adinegara, Subary
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

The volume of sediment transport in a river can be predicted by varions formula such as Meyer-Peter, Schocklitsch, Kalinske and Enstein. The application of those formular result in high naviation raising the questions of which formula is appropriate. This paper presents the evaluation of an appropriate sediment transport formula by comparing the result of laboratory experiment with the analytical result. It is found that for the range of data analysed, the Schocklitsch formula is more appropriate.Keywords: sediment transport, laboratory experimentPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3913[How to cite: Adinegara, S., 2005, Volume Angkutan SedimenÂ Dipengaruhi oleh Kecepatan Aliran (Kajian : Laboratorium), Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 94-105]

Analisis Perbandingan Pengaruh Penggunaan Flyslab dan Plat Floordeck dalam Mewujudkan Lean Construction Sandagie, Edwin; Wibowo, M. Agung; Purwanggono, Bambang
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 22, Nomor 1, JULI 2016
Publisher : Department of Civil Engineering, Diponegoro University

Nowadays there are several kinds of products innovations in the construction industry, one of whom is a precast concrete slab. In fact, products of innovation are not necessarily fully able to provide a positive impact, both in terms of cost, quality, time, and waste on building construction projects. Moreover, what is offered by the manufacturer of precast concrete slab has not necessarily correspond with the needs of the customer. The purpose of this study is to analyze the comparison of products in terms of time, cost, quality, and waste between projects using precast concrete slab and the same projects that were simulated using floordeck concrete slab. This research will: (1) simulate the project if not using precast concrete slab product, (2) analyze the comparison of products in terms of time, cost, quality, and waste between the real project and the simulation project, (3) calculate the benefits obtained from the use of precast concrete slab product. The use of flyslab at Pertamina Parking Building Project (which consists of three floors and two floors using flyslab) when compared with the results of the simulation project that uses floordeck concrete slab: (1) in terms of time, it can provide a savings of 12.5% of the total duration of the simulation project, (2) in terms of costs, it can provide costs savings on the total cost structure reaches 23.13%, (3) in terms of quality, flyslab constituent materials are designed to have a higher quality when compared to floordeck concrete slab constituent materials, (4) in terms of waste, on a project that uses flyslab, the amount of waste generated is much less when compared to the results of the simulation project that uses a floordeck concrete slab.

Tinjauan Kuat Tekan dan Kuat Tarik Kayu Berdasarkan PKKI 1961, SNI M. 27 â€“ 1991 â€“ 03 dan SNI M. 25 â€“ 1991 â€“ 03 Kistiani, Frida
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 2, Edisi XXXV, JUNI 2006
Publisher : Department of Civil Engineering, Diponegoro University

Wood is as one of building materials which hasÂ a specific characteristic compared to others such as steel and concrete. As a natural material wood has natural mechanical characteristics.Â Wood classifies as anisotrophic material which has different mechanical characteristic within its stress, tension, bending, and shear. (it has stresses in inline, perpendicular, and in skewed angle withÂ fibre direction). The various of it skewness of woodâ€™s fibre, humidity, age,Â and specific gravity has significant influence to the mechanical characteristic of the wood. The purpose of this paper is to explain how the differences of mechanical characteristic. Therefore a certain wood probably has many types of various fibre directions. This paper focuses to study on wood stress and tension characteristics.Keywords:Â specific characteristik of wood, anisotrophic, influence factors, tension and stressPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3947[How to cite: Kistiani, F., 2006, Tinjauan Kuat Tekan dan Kuat Tarik Kayu Berdasarkan PKKI 1961, SNI M. 27 â€“ 1991 â€“ 03 dan SNI M. 25 â€“ 1991 â€“ 03, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 2, pp. 206-212]

Stabilisasi Tanah Ekspansive dengan Menggunakan Tanah Putih untuk Tanah Dasar di Daerah Godong Kabupaten Grobogan Jawa Tengah Wardani, Sri Prabandiyani Retno; Muhrozi, Muhrozi; Setiaji, Andi Retno Ari; Riwu, Danny R
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 24, Nomor 1, JULI 2018
Publisher : Department of Civil Engineering, Diponegoro University

Problematic soils such as expansive soils are common in Indonesia. There are several methods to overcome the damage caused by expansive soil, such as by mixing the soil with additives. Some researchers have conducted research by mixing additives into expansive soil (cement, lime, fly ash etc), which work to increase soil strength and reduce swelling. Considering that the people in Buraen Village of Kabupaten Kupang use white soil as a substitute for cement, where the white soil has chemical constituents almost the same as those owned by cement, and contain CaO as it has lime, it is necessary to do research to determine the effect of white soil on physical and mechanical properties of expansive soil, so it can be used as an additive. This research was conducted at Soil Mechanics Laboratory, Civil Engineering Department, Engineering Faculty, Diponegoro University, Semarang.with soil sample from Godong, Central Java and white soil in Buraen Village of Kupang Regency, which purpose to find out the change of physical and mechanical properties of expansive soil that have been given some variation of mixture of white soilÂ to the dry weight of the soil, with optimum moisture content from standard Proctor test results. The results of this study indicate that white soil can be used as an additive and the use of OMC for mixing is the OMC of expansive soil.

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