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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 471 Documents

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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

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, JULI 2018
Publisher : Department of Civil Engineering, Diponegoro University

Worker productivity is an important part of the successful development of human resources and infrastructure building. One of the ways to improve workersâ€™ 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 workerâ€™s productivity; but some of workersâ€™ 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 - Â 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

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 itsÂ 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 Thiessenâ€™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 Bojonegoroâ€™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, JULI 2020
Publisher : Department of Civil Engineering, Diponegoro University

Prestressed precast modular concrete slabs function rigid pavement, supporting vehicle loads above it on subgrade with relatively low bearing capacity. This slab measures 2000 x 850 x 150 mm3 of regular reinforced concrete (old production) or prestressed concrete (new production) quality K-500. After several times of use, damage occurs mainly at the end of the slab in the form of spalling. The objectives of the study and evaluation were: (1) observing damage; (2) material quality data; (3) numerical modeling by taking into account material properties, loading and soil conditions; and (4) providing slab design recommendations including materials and geometrics. The method of study and evaluation of slab damage was done by observing the damage, taking concrete core-case and testing it in the laboratory, and modeling the slab structure with various parameters (soil data, concrete quality and slab geometry). Field observations and analysis results show that concrete slab spalling occurs initially at the edge (850 mm wide) which in turn causes the effectiveness of the pre-tension force to be suboptimal and finally the concrete spalling volume increases. Apart from the frequency of collisions during installation and slab deformation when supporting vehicle loads. Concrete spalling problems also due to inappropriate concrete quality.

Pengaruh Perubahan Kondisi DAS terhadap Debit Sungai Studi Kasus DAS Waduk Jatigede Kodoatie, Robert Johannes
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1, JULI 2020
Publisher : Department of Civil Engineering, Diponegoro University

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, JULI 2020
Publisher : Department of Civil Engineering, Diponegoro University

Mudik is an annual community activity in Indonesia that is carried out simultaneously and in a short time. The government has made various physical or non-physical efforts to reduce the negative impacts arising from Mudik activity. One effort is by providing information related to the condition of Mudik routes. Study of preferences of travelers for changing Mudik routes after obtaining information is needed to anticipate these differences in decisions. The method used in the study is quantitative and qualitative descriptive analysis and uses non-parametric statistical analysis with McNemar and ChiSquare K free samples test to determine whether there are differences in decisions after providing information and differences in preferences for route changes based on factors. The study results show that the factors that cause the same route decisions for travelers who regularly Mudik with private vehicles are the fastest route, and there is no other route choice. The analysis shows that for both factors there is a preference of travelers to change the route by 68.5%, uncertainty by 15%, and not change the route by 16.5%. This study also shows there are differences in decisions after providing information, and there are no differences in route change preferences based on factors.

Penerapan Soft System Methodology pada Metode Penilaian Kerusakan Beton Secara Visual Wiyanto, Henny
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1, JULI 2020
Publisher : Department of Civil Engineering, Diponegoro University

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.Â

Identifikasi Risiko Lanjutan Terhadap Sumber dan Penyebab Material Waste Proyek Konstruksi Jalan Waty, Mega; Sulistio, Hendrik
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1, JULI 2020
Publisher : Department of Civil Engineering, Diponegoro University

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:Â Â 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, Â 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, JULI 2020
Publisher : Department of Civil Engineering, Diponegoro University

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, JULI 2020
Publisher : Department of Civil Engineering, Diponegoro University

Pengisian awal (impounding) bendungan adalah langkah yang dilakukan setelah pekerjaan konstruksi bendungan selesai. Penelitian ini bertujuan untuk menentukan lama waktu dan besar volume inflow di Bendungan Raknamo pada tahun air kering, tahun air rendah, tahun air normal dan tahun air cukup dengan Model Tangki. Faktor yang berpengaruh terhadap waktu pengisian awal bendungan (impounding) ini yaitu volume inflow per tahun Waduk Raknamo diperoleh pada tahun air kering adalah sebesar 15,4898 juta m3, tahun air rendah sebesar 23,6960 juta m3, tahun air normal sebesar 32,8927 juta m3 dan pada tahun air cukup sebesar 44,0687 juta m3. Dalam perhitungan lama waktu pengisian digunakan volume inflow dari tahun air rendah. Akumulasi volume setiap bulannya dihitung sehingga lama waktu pengisian Waduk Raknamo dapat mencapai volume tampungan yang direncanakan yaitu sebesar 14,091 juta m3 dalam kurun waktu tiga setengah bulan (tiga bulan lima belas hari).

Page 29 of 48 | Total Record : 471

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