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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 14 Documents

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Search results for , issue "Volume 13, Nomor 2, Edisi XXXII, JUNI 2005" : 14 Documents clear

Tinjauan Debit Aliran Pada Saluran Utama Jaringan Irigasi Riam Kanan Sub Area A untuk Pertanian, Perikanan dan PDAM Fachrurazie, Chairil
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Riam Kanan irrigation project is cosntucted for supporting and developing the agriculture irrigation system in South Kalimantan Province. Unfortunately, according to the current condition, main function on the irrigation itself has been changed to supply water for fisheries local industry along side the main channel. This paper is writen in order to recalculate the actual flow disharge since changing in utilization of irrigatiion main program. Discharge design 25 m3/ sec to supply originally paddy field around 8.641 ha at sub area A, actual only for 2.170 ha paddy field with 12,7 m3/ sec discharge flow. Another suplly is for fesh water consumption in Banjarmasin and Banjarbaru 1.300 litre/ sec all become 50.80%. Fisheries local insutry covered area 73 ha with water consumption 7,63 m3 secÂ equal to 30,52% of design capacity. Hence the total discharge utilized is 20.33 m3/ sec or equal to 81.32% of total design capacity. Keywords : Cropping Pattern, water sirculation, permeabiity, debit flowPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3905[How to cite: Fachrurazie, C., 2005, Tinjauan Debit Aliran Pada SaluranÂ Utama Jaringan Irigasi Riam Kanan Sub Area A untuk Pertanian, Perikanan dan PDAM, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 20-26]

Perhitungan SCF Untuk Analisa Fatigue pada Sambungan Struktur Anjungan Lepas Pantai Tawekal, Ricky L.
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Fatigue is one of the failure modes on offshore structures that need to be monitored carefully. Fatigue analysis is usually carried out to predict the service life of structure due to fatigue on its joints. Fatigue damage is also depent on Stress Concentration Factor (SCF). SCF is the ratio of hotspot stress at joint to nominal stress on member. Hotspot stress is extreme stress occur at intersection of the joint. In this paper, the calculation of SCF at joint T is carried out by using Finite Element Method that available in ProEngineer Software.Â The resulted SCF based on Finite Element Method will be compared to calculated SCF based on empirical formula. In addition, SCF on joint T will also be compared to SCF on joint with tubular stiffener.Keywords: fatigue, failure mode, offshore structures, stress concentration factorPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3910[How to cite: Tawekal, R.L., 2005, Perhitungan SCF Untuk Analisa Fatigue pada Sambungan Struktur Anjungan Lepas Pantai, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 63-74]

Kajian Banding Secara Numerik Kapasitas dan Perilaku Balok Baja Kastela Menggunakan Program SAP 2000 Suharjanto, Suharjanto
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Extraordinary saving can be obtainef from an often forgotten design concept. The open-web expanded steel beam as usually call castellated steel beam has already paid substantial dividends for various engineering firm. It should be considerd and many more projects. The opening up of a rolled beam (I-section) increases its section modulus and moment inertia, result its greater strength and rigidity. The reduction in beam weight has a chain effect on saving throughout the structure. The result of numeric simulation using computer program SAP-2000 show that the load capacity of castellated steel increase 92,307% compared with its origin section, that is rolled beam or I sevtion steel beam. and the maximum deflection of castellated steel decrease 45.683% compared with its origin section, that is rolled beam or I section steel beam.Keywords : Casrellated, rolled beam, load capacity, deflectionPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3915[How to cite: Suharjanto, 2005, Kajian Banding Secara Numerik Kapasitas dan Perilaku Balok Baja Kastela Menggunakan Program SAP 2000, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 114-121]

Contribution of Groundwater Abstraction to Landsubsidence at the North Coast of Semarang Suripin, Suripin
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Banyak kota-kota di Indonesia terletak di kawasan pantai atau dataran banjir yang terbentuk dari endapan alluvialr. Ketika kota berkembang permasalahan penurunan muka tanah muncul akibat penambamhan beban bangunan yang meningkat yang diperparah oleh pengambilan air tanah yang berlebihan. Tulisan ini membahas dampak pengambilan air tanah yang berlebihan danÂ peningkatan beban bangunan terhadap penurunan muka tanah di Kota Semarang. Berdasarkan kecenderungan pengambilan air tanah dan penambahan beban bangunan, potensi penurunan muka tanah ke depan dapat diprediksikan. Hasil prediksi menunjukkan laju penurunan yang cukup akurat dibandingkan dengan hasil pengukuran. Penurunan muka air tanah mempunyai pengaruh yang lebih dominan dibandingkan dengan penambahan beban pemabangunan terhadap penurunana muka tanah.Kata kunci:Â groundwater abstraction, overburden load, land subsidencePermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3906[How to cite: Suripin, 2005, Contribution of Groundwater Abstraction to Landsubsidence at the North Coast of Semarang, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 27-36]

Studi Pemanfaatan Lumpur Limbah Cair B-3 yang Mengandung Pb dan Cr dari Industri Percetakan sebagai Bahan Baku Tambahan Pembuatan Paving Block (Studi Kasus PT Gramedia Group, Jakarta) Widiastuti HN; Badrus Zaman; Nita Anggraeni
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Printing industrial wastewater represented hazardous waste. Processing of printing industrial wastewater still yielded by sludge which needing furthermore processing, because it contained heavy metal Pb and Cr, which also had the character of B-3, as does its wastewater. Processing of hazardous waste with solidification process represented the way of processing as efficient and effective alternative and also profit in expense of to the printing industry and to continuity of environment. Sludge could be use as aggregate, which was the raw material in making of block pavement with sand, cement, and water. Research of sludge exploited as an addition of paving block had the character of experimental made block pavement by varied 10%, 15%, 20%, 25%, 30%, 35%, 40% sludge in sand. Results indicated that with substitution until 30 % of sludge weight replacing sand as aggregate in the reality could yielded block pavement powerfully depress fulfilling SNI 03-0691-1996. The highest strength depress was yielded by addition 10% of sludge powerfully depress 229.375 kg / cm2 and was absorption of water 11.334%. Leaching test with submerged simulation gave result that concentration of Pb and Cr still below standard quality of hazardous waste that was 0,1ppm and 0,5 ppm and was leaching rate of pavement block downhill progressively by increasing day it of submerged. Result of this research was expected could become alternative processing of hazardous waste and advantaging in expense. Keywords: sludge, hazardous waste, solidification, block pavementPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3911[How to cite: Widiastuti HN, Zaman, B. dan Anggraeni, N., 2005, Studi Pemanfaatan Lumpur Limbah Cair B-3 yang Mengandung Pb dan Cr dari Industri Percetakan sebagai Bahan Baku Tambahan Pembuatan Paving Block (Studi Kasus PT Gramedia Group, Jakarta), Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 75-8]

Osilasi Dalam Tangki Pendatar (Surge - Tank) Akibat Penutupan Turbin Secara Mendadak Sangkawati, Sri
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Surge tank in hydro-power generation plant is placed on the transition between conveyance pipe channel and chute pipe. The dimension of surge tank is designed based on water mass oscillation result in minimum hydrodynamic pressure, such that it can determine form, type, and configuration of the tank. The sudden increase in hydrodynamic pressure (positive water hammer) is caused by abrupt decrease in water discharge to the turbine to reduce load to the generator. This positive water hammer is dependent on the discharge and time of closure of the valve. Mathematical equation that describes mass oscillation in the reservoir-pipe channel-surge tank is dynamic and solution can be easily using numerical techniques. This paper demonstrates the water hammer oscillation in a surge tank. The result shares that, 1) when the ratio between surge tank area (As) to the pipe area (AT), As/AT below 5, the maximum increase in water pressure is significant, ii) when the ratio As/AT greater than 5, the increase in water pressure is not significant and tends to have slight differences. Key Words : surge-tank, mass oscillationsPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3916[How to cite: Sangkawati, S., 2005, OsilasiÂ Dalam Tangki Pendatar (Surge - Tank) Akibat Penutupan Turbin Secara Mendadak, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 122-129]

Aplikasi Metode Generalized Reduced Gradient dalam Pemodelan Curah Hujan-Limpasan Menggunakan Artificial Neural Network (ANN) Hadihardaja, Iwan K.; Sutikno, Sugeng
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

The rainfall run off modelling is necessary until now days, for fulling data or make data longer. Artificial neural network can made the alternative rainfall run off modelling. The implementation Artificial neural networ for modelling on the water resources which is done by researcher to get an accurate result. Artificial neural networ is one of artificial intelligent that is imitation of representation from brain of human. This model is the black box modelling, so in the implementation were not need complecity of scient among the other aspect in the process of rainfall run off modelling. The case study applied to the river flow on the way Sekampung river in Lampung Province. The data used is rainfall data and stream flow data in the middle of the month on the water level station Pujorahayu, for 19 years from 1983 up to 2001. The rainfall data is input and stream flow is a variable output. Learning method that is used reduced gradient. From the result of this research got correlation coefficient 0,790 or 79 % the tallest. The conclution of this research is the generaly ANN can implementated in the rainfall run off modeling, although the result is not too accurate because of there is still deviation.Keywords: rainfall-runoff, artificial neural network, black box, generalized reduced gradientPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3907[How to cite: Hadihardaja, I.K. dan Sutikno, S., 2005, Aplikasi Metode Generalized Reduced Gradient dalam Pemodelan Curah Hujan-Limpasan Menggunakan Artificial Neural Network (ANN), Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 37-49]

Manejemen Kualitas Air di Sungai Sigeleng Desa Randusanga Kulon Brebes Barkah, Atiyah; Setiyawan, Gunanto
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Development in developing countries is meant to yield development progress, although usually followed by environmental damage. This problems is caused by the act of human being which heedless of the conservation aspect. One of its impact is low quality of water river.This condition can be observed by the indication of low dissolve oxygen Concentration (DO), high biological oxygen requirement concentration (BOD), and high suspended soil ( SS). This condition can causes damage to environment and ecology inbalance. Resident growth, animal husbandry and compost heap in the Sigeleng River of Randusanga Kulon Village, Brebes of Central Java, have resulted the water contamination. Therefore, expected with the approach of inwrought water quality management studying goodness from law aspect, technical, economics and society can be existed by a make-up of environmental quality in the Sigeleng River Sigeleng atÂ years to come. In addition, from the observation water quality, the fluoride (F) content at least 1.702 mg/l > 1.500 mg/l (the permissible value), the timbale (Pb) content at least 0,275 mg/l >0,100 mg/l the fluoride and Chemical oxygen demand (COD) content at least 160 mg/lÂ > 50 mg/l. Ti increase the qualities of that water resources as become fresh water, it can be efforted of treatment for the neutralize using of contant F, Pb and COD. Threatment of water quality i.e.Â sedimentation, filtration, and chemical prosses such asÂ activated carbonation and ziolith sand. Keywords: water quality managementPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3912[How to cite: Barkah, A. dan Setiyawan, G., 2005, Manejemen Kualitas Air di Sungai Sigeleng Desa Randusanga Kulon Brebes, Jurnal Media Komunikasi Teknik Sipil, Voume 13, Nomor 2, pp. 85-93]

Nilai Slump Ideal untuk Perencanaan Campuran Beton Mutu 50 MPa Iskandar, Iskandar; Tjitradji, Darmansyah; Eliatun, Eliatun
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Recently, the need of the high strength concrete is increased, because of the rapid technology development in the concrete technology area. In the performing of the high strength concrete is rather difficult on the mixing, pouring, and vibrating, because, the raw concrete mix is very viscous. The aim of this research is to find out the ideal slump value of the high strength concrete mix which is used the local aggregate with superplasticizer and silica fume, therefore it can be performed the good workability of the fresh concrete and design strength of the concrete (fâ€™c = 50 MPa) could be reached. The experiment was conducted by compressive strength testing on one hundred twenty cylinder specimens with the slump value of 0-10 mm, 10-30 mm, 30-60 mm and 60-180 mm. As the result of the test is obtained the idealized design slump value is 30â€“60 mm. Keywords: high strength concrete, local aggregate, slumpPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3903[How to cite: Iskandar, Tjitradi, D. dan Eliatun, 2005, Nilai Slump Ideal untuk Perencanaan Campuran Beton Mutu 50 MPa, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 1-10]

Menentukan Pola Debit Rata Rata Tahunan Wahyuni, Sri Eko
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Time series analysis applied to hydrological data is generally used to forecast the in coming series of data such that use can make use of the information to manage, control, and anticipate the posible occurence of natural phenomena. This paper applied time series analysis to discharge data at Kali Kunto, Central Java. The data shows that the annual discharge at Kali Kunto tends to follow an ARMA (1,1) to ARMA (2,2). The appropriate ARMA model can be obtained through calibration stage. Keywords: time series analysis, discharge patternPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3908[How to cite: Wahyuni, S.E., 2005, Menentukan Pola Debit Rata Rata Tahunan, Jurnal Media Komunikasi Teknik Sipil, Volume 13, Nomor 2, pp. 50-56]

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