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Info-Teknik
Published by Universitas Lambung Mangkurat
ISSN : 08532508     EISSN : 24599964     DOI : http://dx.doi.org/10.20527
Core Subject : Engineering,
Engineering
Jurnal Info – Teknik menerbitkan artikel – artikel karya orisinil dan signifikan pada Bidang Rekayasa Teknik.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 425 Documents
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Perencanaan Produksi Agregat Dengan Metode Goal Programing Mastiadi Tamjidillah
INFO-TEKNIK Vol 4, No 1 (2003): INFOTEKNIK VOL. 4 NO. 1 2003
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v4i1.472

Abstract

A Production planning is very important to all activities in manufacturing company. For a company producing a variety of product the production planning will be complicated. In this case it’s necessary to make an aggregate production planning. A Company has goals to achieve the products, althought there differenciate between each other. Other wise, if needs to make a production planning that accommodate such goals.Goal programming model  can be used for aggregate production planning. This multi objective model can accommodate more than one goal which will be achieved by the company. Product demand forecasting is input for aggregate production planning. From this aggregate production planning, futhermore, disaggregation must be conducted, then it will be continued by raw material planning. The raw material planning is made by lot size each order economically.   The aim of goal programming model is to maximize profits, to minimize subcontract products amount, to minimize overtime labours cost and to minimize inventory amount. The results show that the goal programming model could accommodate three goals that will be achieved by the company, except that goal to maximize profit high goal is to minimize inventory amount. The comparison between planning and realitation show that the goal programming model could reduce the minimize overtime labours cost.
KAJIAN VARIABILITAS CURAH HUJAN DI KAWASAN LERENG GUNUNG MERAPI DENGAN UJI MANN-KENDALL Endita Prima Ari Pratiwi; Joko Sujono; Rachmad Jayadi
INFO-TEKNIK Vol 13, No 1 (2012): INFOTEKNIK VOL. 13 NO. 1 2012
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v13i1.1810

Abstract

Rainfall is one of hydrology components that may be affected by climate change. The change of rainfall pattern can cause much impact on many fields. Many researches about global and regional climate change projection have been conducted. However, research about local scale of climate change based on climate character in local area is still necessary for a better result. Area of this research cover southwest slope of Merapi Mount, Java Island, Indonesia. Automatic rainfall data records from 1989 until 2008 of nine rainfall gauges in Merapi Mount’s southwest slope is available. Those data series this research is only adequate for climate variability analysis. The methods to detect trends in this research is non parametric test (Mann-Kendall test). The results show that at level of significance 5%, trend of rainfall in Mt. Merapi slope area is statistically not performing a specific pattern. Wet season occur every November until April while dry season occur every May until October. Neglect of trend signification, annual rainfall has decreace tendency. Rainfall amount in the beginning of wet season has increase tendency while rainfall amount in the middle of wet season and dry season have decreace tendency. Maximum daily and hourly rainfall also have decreace tendency.Spatially, annual rainfall and maximum daily rainfall increased from lower to higher elevation, from east to west and from south to north.
APLIKASI TEKNOLOGI DIGESTER UNTUK PENGOLAHAN HUMAN MANURE, SAMPAH ORGANIK DAN LIMBAH CAIR DOMESTIK DI ASRAMA MAHASISWA KOTA BANJARBARU KALIMANTAN SELATAN Achmad Kusairi Samlawi; Yulian Firmana Arifin; Lailan Ni'mah
INFO-TEKNIK Vol 17, No 1 (2016): INFOTEKNIK Vol. 17 No. 1 2016
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v17i1.1268

Abstract

Student dormitory is one of the facilities provided as a means of support for the students in their studies in Universities. Because many students who come from outside the region where the study was held. Dormitory students have an important role in supporting the successful development in the field of education as well as business opportunities to boost the economy of the people who live around educational institutions. However on the other side where the hostel will generate waste, among others, feces and urine, organic and inorganic garbage and domestic waste which if not managed properly could potentially cause health problems, and aesthetics. The problems that have been faced by managers and occupants of a student dormitory in the Kelurahan Sungai Besar, Kecamatan Banjarbaru Selatan, Banjarbaru City is the lack of knowledge of how the processing waste human manure, organic waste and domestic waste water so it does not pollute the surrounding environment and at the same time converting the processed organic waste into a resource new energy, namely biogas and compost.Digester technology applications will generate a set of tools Human waste processing manure, organic waste and domestic waste. This technology is the processing of organic material anaerobic digester technology in the form of organic waste that the waste that comes out of the digester safely discharged into the environment. Aside from being a waste treatment plant, the solution can also produce biogas to biogas formed later expected to be utilized as a fuel substitute for LPG and fuel Generator Set (Genset) as a substitute fuel (gasoline) in addition produce a byproduct of compost were also no less economic value. Inside the digester hydrolysis and fermentation process occurs, phase Acetogenesis and methanogenesis phase of organic waste into biogas and its byproducts are composted. The process takes 20-30 days. Wastewater digester output of the reactor is no longer harmful to humans, the environment and other living organisms that are not harmful to the environment if disposed of.
ANALISA KEGAGALAN RODA GIGI MATAHARI SWING DRIVE PADA EXCAVATOR CATERPILLAR 349 D Achmad Kusairi Samlawi; Muhammad Zaini
INFO-TEKNIK Vol 20, No 2 (2019): INFOTEKNIK VOL. 20 NO. 1 DESEMBER 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v20i2.7718

Abstract

The study focused on analyzing the failure of the sun gear section of the swing drive excavator, where there has been a failure in operation. The gears are predominantly damaged in certain areas while other areas appear to have minimal failure. To answer the cause of failure of the gear, 3 stages of testing are carried out, namely; macro observation, chemical composition test and hardness test and loading simulation. The results of this test are that failure occurs due to case crushing caused by residual stresses under the surface of the gears, the detached surface and pinnion conditions exposed to the soft parts become more vulnerable so that scoring occurs causing macrowelding.
MEKANISME PROSES ALIGNMENT POROS MESIN ROTASI BERBANTUAN PERANGKAT LUNAK Darto Darto; Sudjatmiko Sudjatmiko
INFO-TEKNIK Vol 16, No 1 (2015): INFOTEKNIK VOL. 16 NO. 1 2015
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v16i1.209

Abstract

The expected lifespan of the machine is very reliable and can be operated in order as long as possible without damage. Even systems "Maintenance Management" sophisticated yet become meaningless if the machines are not done properly alignment process. Approximately 70% of the causes of damage to machinery rotation due to misalignment.  Based on these conditions, the need for a method that is reliable and quick to make the process of alignment so that the production process does not experience the delay or shutdown process.          In order to do that then one way that can be done is by measuring alignment aided by using software. Alignment Quest is a mechanical device used to help straighten out the connection between one machine to another. Misalignment unnecessary, since misalignment is a major cause engine damage. By using the software can save money if the machines do not happen misalignment. Preventive maintenance of the machine will make the life of the engine becomes long.          Results of this study, the conclusion that the use of the software is technically Alignment Quest accelerate work in the process of rotation of the machine shaft alignment, the software will give you the results carefully if all measurement results dail indicator has high accuracy and the adjustment shim to add to the position of the machine directly viewable from the train folder. Keywords: engine rotation, alignment, software Alignment Quest
Menentukan Koefisien Transfer Massa dan Diffusivitas Efektif dari Proses Dekolorisasi Zat Warna Primata Mardina
INFO-TEKNIK Vol 8, No 1 (2007): INFOTEKNIK VOL. 8 NO. 1 2007
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v8i1.1721

Abstract

Dyes are used in various sectors like textile, paper and dyeing industries which discharge waste colored dye liquid. Solid-liquid adsorption principal has been used to decolorize it. The experiment has used granular activated carbon as adsorbent. The experiment’s purpose is determining mass transfer coefficient (Kc) and effective diffusivity (De) as adsorption equipment design parameter.The dye adsorption follows the Langmuir equilibrium equation. The effects of system variables are initial concentration and impeller rotated velocity. The value of Kc of dye at 100 ppm, 80 ppm, 60 ppm, 40 ppm and 20 ppm were found to be 5.209 x 10-4 g/cm2/minute, 5.17 x 10-4 g/cm2/minute, 5.151 x 10-4 g/cm2/minute, 5.163 x 10-4 g/cm2/minute and 5.85 x 10-4 g/cm2/minute. The value of De at 100 ppm, 80 ppm, 60 ppm, 40 ppm and 20 ppm were found to be 3.249 x 10-4 cm2/minute, 3.127 x 10-4 cm2/minute, 3.107 x 10-4 cm2/minute, 3.004 x 10-4 cm2/minute and 3.524 x 10-4 cm2/minute. The value of Kc of dye at 400 rpm, 500 rpm and 600 rpm were found to be 5.999 x 10-4 g/cm2/minute, 5.85 x 10-4 g/cm2/minute and 8.369 x 10-4 g/cm2/minute. The value of De at 400 rpm, 500 rpm and 600 rpm were found to be 3.978 x 10-4 cm2/minute, 3.524 x 10-4 cm2/minute and 3.995 x 10-4 cm2/minute. The experiment result is approximated with mathematical equation This equation prevails in Reynolds Number 3000 until 5600 with average relative error 9.3114 %.
IDENTIFIKASI LONGSORAN LERENG DI RUAS BAMBANGAN – AJI KUNING KALIMANTAN TIMUR KM 6+500 & PENANGANAN MENGGUNAKAN DINDING PENAHAN TANAH Rusliansyah Rusliansyah; Aulia Isramaulana; Yunizar Antoni Akbar
INFO-TEKNIK Vol 14, No 2 (2013): INFOTEKNIK VOL. 14 NO. 2 2013
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v14i2.303

Abstract

This paper discusses the handling of slope sliding occured in the segment of Bambangan – Aji kuning East Borneo. The slide occurs because of unprotected slopes and soil types in the form of silt sandy. Treatment methods cantilever retaining walls was designed inorder to handle the sliding. The cost of the this method was also calculated to obtain the price.Soil investigation and topography data were collected as a secondary data. The design was commenced by preliminary design for this method. The next step was continued with the calculation of safety factor of sliding, overtuning, and bearing capacity. For cantilever, the design was included the calculation of reinforcement. Overal stability of slope was performed using Plaxis Professional 8.2. The cost analysis was performed using Bina marga 2010 method.By using the cantilever, the dimension of the pedestal are 3m wide, 0.5 m thick matsand wall and 5m high. the safety factor of overal stability for both method was higher than that of caltilever wall.. The cost of the reinforcement using cantilever Rp 489.373.268,.
STUDI PEMAHAMAN DAN PENERAPAN STANDAR KOMPETENSI KETERAMPILAN KERJA TENAGA KERJA PADA PELAKSANAAN PROYEK KONSTRUKSI Candra Yuliana
INFO-TEKNIK Vol 10, No 1 (2009): INFOTEKNIK VOL. 10 NO. 1 2009
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v10i1.1764

Abstract

Head of workman and workman are the primary movers and and implementers in the implementation of a construction project. As the growth of construction projects in Banjarmasin, the head of workman and workman must have expertise in accordance with the existing standards. This is supported by National Skills Competency Standards of Indonesia which issued and determined by Department of public works for sector head of workman and workman skills. This study was conducted to determine the understanding head of workman and workman on job skills competency standards and to learn its application in construction projects in Banjarmasin. The methode which was used in this study is validity test, reliability test and descriptive analysis (average value). Result of analysis of questionnaires and interviews from 7 construction projects (90 workman dan 7 head of workman), the percentage obtained for 79,63% of understanding (mason), 88,15% (carpenter), 88,75% (blacksmith/concrete), 90,47% (head of mason), 95,92% (head of carpenter), 92,86%(head of blacksmith /concrete). For the competency standard implementation acquired job skills by applying the percentages of 33,70% (mason), 30,37% (carpenter), 27,09% (blacksmith/concrete), 14,28% (head of mason), 20,41% (head of carpenter), 26,19%(head of blacksmith/concrete). In most of the construction project head of workman and workmen understand competency standard of work skills but not followed by the implementation.
Studi Laju Peningkatan Kekuatan Tekan Beton yang Memakai Abu Terbang Ida Barkiah
INFO-TEKNIK Vol 4, No 2 (2003): INFOTEKNIK VOL. 4 NO. 2 2003
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v4i2.535

Abstract

Pemakaian abu terbang PLTU Asam-asam sebagai bahan pengganti sebagian semen dapat mengurangi kebutuhan semen yang merupakan bahan dasar pembentuk beton. Namun besarnya perubahan kuat tekan belum diketahui. Untuk itulah perlu diteliti laju peningkatan kuat tekan beton yang memakai abu terbang pada tiap umur pengujian.Pada penelitian ini benda uji untuk mutu beton rencana f’c = 35 MPa menggunakan abu terbang sebanyak 25% dari jumlah semen dan beton normal tanpa abu terbang. Pengujian kuat tekan dilakukan pada umur 3, 7, 28 dan 56 hari.Hasil pengujian menunjukkan bahwa pada umur pengujian 3, dan 7 hari kuat tekan beton abu terbang lebih rendah daripada beton normal, pada umur 28 hari kuat tekan beton abu terbang hampir sama dengan beton normal. Namun setelah 56 hari kuat tekan beton abu terbang lebih tinggi daripada beton normal. Besarnya penurunan kuat tekan beton abu terbang terhadap kuat tekan beton normal pada umur 3 hari sebesar 16,60%, umur 7 hari sebesar 11,29% dan umur 28 hari sebesar 0,04%, sedangkan umur 56 hari terjadi peningkatan kuat tekan sebesar 8,78%. Dari penelitian didapatkan hubungan antara kuat tekan beton dengan umur pengujian yang dinyatakan dengan nilai konstanta. Nilai konstanta untuk beton yang memakai abu terbang pada umur 3 hari sebesar 0,65, umur 7 hari sebesar 0,86, umur 28 hari sebesar 1 dan umur 56 hari sebesar 1,17. Dimana nilai konstanta tersebut dapat digunakan untuk mengetahui kuat tekan beton abu terbang pada umur 28 hari. Dengan pemakaian abu terbang pada adukan beton dapat meningkatkan workabilitas dan kelecakan adukan beton sehingga mengurangi jumlah penggunaan air.
TIPOLOGI KAWASAN JALAN PAGERAN ANTASARI BANJARMASIN Nurfansyah Nurfansyah
INFO-TEKNIK Vol 13, No 1 (2012): INFOTEKNIK VOL. 13 NO. 1 2012
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v13i1.1815

Abstract

Pangeran Antasariroadas one ofthe Banjarmasin City's maincorridor that have strategic functions for citydevelopment asthe center oftrade and services. The aim of this research was madein order to determinethe typologyandmorphologyof theexisting buildingonthe Pangeran Antasari Street of Banjarmasin. Expectedfromtheanalysis of thetypologyandmorphology ofthe building willobtaina typologyandmorphologyof the region.The methodof analysis usedin this research isthe evaluationand thecomparativemethod, thecomparison betweenthe theoryand the conditionsat the sites.In addition,this methodprovides an assessmentbased oncomparison ofthe variablesexamined inthe observations.Based on these resultsobtained by some element in typology and morphology that could make as building and massing in the sites, such as : SkyLine, Entrance, Landscape, SetBack, andhumanscale, therearequite relevantto thelocal regulationsis setforthePangeranAntasari Street of Banjarmasin, althoughexistingbuildingsstillless regularin terms ofmorphology.

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