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MEDIA KOMUNIKASI TEKNIK SIPIL
Published by Universitas Diponegoro
ISSN : 08541809     EISSN : 25496778     DOI : -
Core Subject : Engineering,
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 472 Documents
Variasi Kadar Aspal pada Perkerasan Lentur Diperkuat dengan Geosintetik Nugroho, Soewignjo Agus
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 3, Edisi XXXVI, OKTOBER 2006
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (202.942 KB) | DOI: 10.14710/mkts.v14i3.3948

Abstract

Reflection crack is one type of road crack. Repairing is usually done by overlay. This research examine role of geosintetic as reinforcement in overlay of flexible pavement. This research is done by making a beams model made of aggregate and asphalt, representing flexible pavement. Models are tested with cyclic loads. Observation is focused on the influence of asphalt content to the rate of crack propagation. Results shows that geosintetics reduced rate of crack propagation, while optimum asphalt content still should be used in design. Keywords: geosintetics, overlay, reflection crack, rate of crack propagationPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3948[How to cite: Nugroho, S.A., 2006, Variasi Kadar Aspal pada Perkerasan Lentur Diperkuat dengan Geosintetik, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 3, pp. 213-223]
Analisis Pengaruh Pelatihan dan Sertifikasi terhadap Produktivitas Pekerja Kodri, Irfa; Fitriani, Heni; Juliantina, Ika
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 24, Nomor 1 (2018)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (677.507 KB) | DOI: 10.14710/mkts.v24i1.17331

Abstract

Worker productivity is an important part of the successful development of human resources and infrastructure building. One of the ways to improve workers’ productivity is using training and worker certification. Therefore, there is a need to analyze the effects of training and certification on worker productivity with case study lightweight brick and steel rods workers in some projects in Palembang. This study aims to analyze the productivity value of workers between certified trained workers (TS) and untrained noncertified workers (BTBS) in the field. Furthermore, comparisons were also conducted on productivity based on field survey and Indonesian National Standard (SNI). This paper also analyzed the significant factors that affect workers productivity in the field. This productivity appraisal used field observation methods and questionnaire. From the results of the study, it was concluded that the training and certification of the workforce greatly affected the worker’s productivity; but some of workers’ productivity of trained workers (TS) and untrained noncertified (BTBS) met the standards of SNI, some did not. This was due to the influence of other factors beyond training and certification of the productivity value of handyman. Furthermore, based on t test results, the factors that significantly affect the productivity of workers were the skills of labor (X1), work motivation (X2) and management (X4). Thus the available regression equation was Y =0,024 +0,332 X1 + 0,676X2 -  0,039X4 + e.
Persoalan Proses Kalibrasi Model Perkiraan Banjir Daerah Aliran Sungai Besar Studi Kasus DAS Bengawan Solo Sobriyah, Sobriyah
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 12, Nomor 2, Edisi XXIX, JULI 2004
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.954 KB) | DOI: 10.14710/mkts.v12i2.2681

Abstract

Rainfall runoff model with system approach do not interested of the process that happened on the land, but its more interested of the truth of the result which is obtained through calibration. The problem emerge and its  started from the existing data condition. The existing of rainfall data have different range of time and it owning many empty data. The areal precipitation analysis by Thiessen’s methode get difficulty because its polygon fluctuate. For large catchment with some place of Automatic Water Level station, the chosen of streamflow represent the time series of streamflow from the upstream to the downstream. Some gathered data indicate that the upstream hydrograf is high but the downstream hydrograf is low, or on the contrary. Most of Bojonegoro’s hydrograph data has smaller volume than its upstream hydrograph. For the overcome of this problem its used the various method, so that result of calibrating is satisfy Key Words : calibration problem, rainfall-runoff model, large catchment
Kajian dan Evaluasi Struktur Slab Prestressed Precast Modular Concrete Eratodi, I Gusti Lanang Bagus; Awaludin, Ali; Han, Ay Lie; Triwiyono, Andreas
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5241.167 KB) | DOI: 10.14710/mkts.v26i1.27765

Abstract

Slab prestressed precast modular concrete berfungsi rigid pavement, mendukung beban kendaraan di atasnya pada tanah dasar yang daya dukungnya relatif rendah. Slab ini berukuran 2000 x 850 x 150 mm3 dari beton bertulang biasa (produksi lama) atau beton pretension (produksi baru) mutu beton K-500. Dalam pemakaian di lapangan slab ini diharapkan dapat dipasang dan dilepas berulangkali. Setelah beberapa kali pemakaian, terjadi kerusakan terutama pada bagian ujung slab berupa spalling. Tujuan kajian dan evaluasi struktur ini adalah: (1) mengamati kerusakan; (2) mendapatkan data kualitas bahan; (3) melakukan pemodelan secara numeris dengan memperhatikan sifat material, pembebanan dan kondisi tanah; dan (4) memberikan rekomendasi desain slab meliputi bahan dan geometrik. Metode kajian dan evaluasi kerusakan slab dilakukan pengamatan kerusakan, pengambilan core-case beton dan pengujiannya di laboratorium, serta pemodelan struktur slab dengan berbagai parameter (data tanah, mutu beton dan geometri slab). Hasil pengamatan di lapangan dan hasil analisis maka dapat diketahui bahwa spalling beton slab terjadi awalnya pada bagian tepi (sisi lebar 850 mm) yang selanjutnya menyebabkan efektifitas gaya pretension menjadi tidak optimal dan akhirnya volume spalling beton menjadi semakin bertambah. Selain karena frekuensi benturan saat pemasangan dan deformasi slab saat mendukung beban kendaraan. Permasalahan spalling beton juga dikarenakan mutu beton yang tidak sesuai. 
Pengaruh Perubahan Kondisi DAS terhadap Debit Sungai Studi Kasus DAS Waduk Jatigede Kodoatie, Robert Johannes
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1573.513 KB) | DOI: 10.14710/mkts.v26i1.28989

Abstract

Changes in land use in the upstream of Jatigede watershed cause discharge and sedimentation problems in the Jatigede Reservoir. The objective of this study is to analyse the affect of land use changes in the Jatigede Reservoir watershed to the inflow and sediment to the reservoir. SCS Curve Number method and HEC-HMS modeling system are used to discharge analysis. Flood discharges in the reach of Cimanuk River close to the reservoir using data of 2009 are Q2=1,751.5 m3/sec, Q5=2,280 m3/sec, Q25=3,064.5 m3/sec, Q50=3,589 m3/sec. Flood discharges in the reach of Cimanuk River close to the reservoir using data of 2018 are Q2=2,053.8 m3/sec, Q5= 2,616.7 m3/sec, Q25 = 3,439.2 m3/sec, Q50=3,984.9 m3/sec. Discharges increase in 10 years (based on 2009 data and 2018 data). For example discharge increment for Q25 is 375 m3/sec. The increment is due to the increment of CN number as the consequences of land use changes. In other words along with the time, flood discharge in the rainy season increases, however discharge in the drought season decreases.
Preferensi Perubahan Rute terhadap Informasi Kondisi Rute Mudik Hendrawan, Hendra
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.944 KB) | DOI: 10.14710/mkts.v26i1.25987

Abstract

Mudik merupakan kegiatan tahunan masyarakat di Indonesia yang dilakukan secara serentak dan dalam waktu yang singkat. Pemerintah telah melakukan berbagai upaya baik fisik atau non fisik untuk mengurangi dampak negatif yang ditimbulkan dari aktivitas mudik. Salah satu upaya yang dilakukan yaitu dengan memberikan informasi terkait kondisi rute mudik. Studi preferensi perubahan rute mudik setelah memperoleh informasi diperlukan untuk antisipasi dampak dari perbedaan keputusan tersebut. Metode yang digunakan dalam studi yaitu analisis dekriptif kuantitatif dan kualitatif serta menggunakan analisis statistik inferensia non parametrik dengan uji McNemar dan uji ChiSquare K sampel bebas untuk mengetahui adanya tidaknya perbedaan keputusan setelah pemberian informasi dan perbedaan preferensi perubahan rute berdasarkan faktornya. Hasil studi menunjukan bahwa faktor yang menyebabkan keputusan rute yang sama untuk pemudik yang rutin mudik dengan kendaraan pribadi yaitu rute paling cepat, dan tidak ada pilihan rute lain. Hasil analisis menunjukan bahwa untuk kedua faktor tersebut terdapat preferensi pemudik dengan persentase rata-rata untuk mengubah rute sebesar 68,5%, ragu-ragu sebesar 15%, dan tidak mengubah rute sebesar 16,5%. Studi ini juga menunjukan terdapat perbedaan keputusan setelah pemberian informasi, dan tidak ada perbedaan preferensi perubahan rute berdasarkan faktornya.
Penerapan Soft System Methodology pada Metode Penilaian Kerusakan Beton Secara Visual Wiyanto, Henny
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (755.713 KB) | DOI: 10.14710/mkts.v26i1.21371

Abstract

Concrete damage on buildings can be interpreted as the presence of a change in the physical state of concrete. Damage can be in the form of change on the concrete surface or loss of concrete quality. To be able to identify the concrete damage condition on a building, inspection and assessment is required. Visual assessment is a method that can be a good first step to identifying the concrete damage condition on a building structure. Visual assessment is limited to concrete surface that can be accessed with visual senses. The goal of the research is to develop the concrete damage assessment method on a building visually that can be accepted by construction industry users in Indonesia with the Soft System Methodology (SSM) approach. Application of the SSM approach in this research uses the Root Definition component, CATWOE analysis, Rich Picture, and Conceptual Model. Result that is obtained from research, is the development concept for a visual method of building damage assessment, based on the seven steps according to SSM. Research results are in the form of a method that can identify and assess concrete damage while determining the concrete damage level on a building visually. 
Identifikasi Risiko Lanjutan Terhadap Sumber dan Penyebab Material Waste Proyek Konstruksi Jalan Waty, Mega; Sulistio, Hendrik
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (720.347 KB) | DOI: 10.14710/mkts.v26i1.21817

Abstract

Early risk identification of the sources and causes of waste material for road construction projects has been carried out, and the research continues to carry out further risk identification which then becomes the final risk identification. Description and validity tests and reliability tests were carried out to obtain further risk identification. Each source variable and indicator of the cause of material waste in each material is differentfrom one another because each has a difference. The results of continued identification resulted in:   1) ready mix concrete has eight variables of waste material sources and 21 indicators of material waste causes, 2) lean concrete has seven variables of waste material sources and 18 indicators of material waste causes, 3) aggregate B has seven variables of waste material sources and 12 indicators of material waste causes,  4) landfill has eight variables of material waste sources and 26 indicators of material waste causes, 5) cement has seven variables of material waste sources and 31 indicators of material waste.
Pengaruh Substitusi Tanah Putih pada Mortar Geopolimer Berbahan Dasar Fly Ash dengan Aktifator Natrium Hidroksida Priastiwi, Yulita Arni; Hidayat, Arif; Daryanto, Dwi; Badru, Zidny Salamsyah
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (596.877 KB) | DOI: 10.14710/mkts.v26i1.24715

Abstract

The presence of white soil in a geopolymer mortar affects the physical and mechanical properties of the mortar itself, especially in compressive strength, density and modulus of elasticity produced. Geopolymer mortar composed of fly ash, sand, water, and NaOH which acts as an alkaline activator compared to mortar from the same material, but white soil from Kupang is added as a substitution of fly ash. Specimens are made in six variations. Geopolymer mortar composers using a ratio of 1 binder: 3 sand with w/b of 0.5. Binder composed of fly ash with white soil substitution of 0; 5; 10; 15; 20 and 30% by weight of fly ash. An activator NaOH 8M solution was added to the mixture. Both white soil and fly ash pass of sieve no. 200 with a moisture content of 0%. Mortar made measuring 5x5x5 cm. The mortar was treated by the oven of method at 60 oC for 24 hours until the mortar does not change in weight. The test results show geopolymer mortar with 15% substitution of white soil to fly ash has the highest compressive strength, density and modulus of elasticity among other variations. In all mortar variations, compressive strength at 14 days has reached 75% of strength at 28 days.
Analisis Pengisian Awal (Impounding) pada Bendungan Raknamo Dengan Model Tangki Krisnayanti, Denik S; Bolla, Margareth E; Bunganaen, Wilhelmus; Damayanti, Alvine C; Nait, Costandji; Amaral, Bilgardo E.D.N.R
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (782.897 KB) | DOI: 10.14710/mkts.v26i1.26757

Abstract

The impounding of the dam is the step that will be done after construction work on the dam be finished. This study aims to determine a long time and the volume of inflow on Raknamo dam in dry water year, low water year, normal water year and wet water year with tank model. Factors that affected the time of the first impounding of the dam is the amount of rainfall and evapotranspiration that has come in to the catchment area. The total volume of annual inflow Raknamo reservoir obtained in dry water year was in 15,489 million m3, low water year equal to 23,696 million m3, normal water year equal to 32,892 million m3 and wet water year equal to 44,068 million m3. In the calculation of the length of time filling the Raknamo reservoir used the volume of low water year. The accumulation of the volume of every month calculated so that length of time filling the Raknamo reservoir can reach the volume of planned at 14.091 million m3 within three a half months (three months fifteen days).

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