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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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Sebuah Skema Pengendalian Proses Tak Stabil Aqli Mursadin
INFO-TEKNIK Vol 1, No 1 (2000): INFOTEKNIK VOL. 1 NO. 1 2000
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v1i1.396

Abstract

Sebuah skema pengendalian proses tak stabil diperkenalkan melalui proses ramp, suatu jenis proses yang ketidakstabilannya diakibatkan oleh kehadiran proses secara statistik (SPC). Pada skema ini, EPC diterapkan untuk mengendalikan pengaruh drift yang determenistik, sedangkan SPC dengan peta kendali shewhart individual digunakan untuk memantau  galat pengendalian sebagai efek random yang tersisa. Sebuah contoh implementasi skema ini diberikan, dan hasil-hasilnya dibandingkan terhadap hasil-hasilnya skema dengan hanya menggunakan EPC. Skema yang pertama, yaitu integrasi EPC-SPC, memberikan variasi proses yang lebih kecil dibandingkan yang kedua.
PERKUATAN DENGAN CERUCUK GALAM DI ATAS TANAH LUNAK Zainal A Gaffar
INFO-TEKNIK Vol 6, No 2 (2005): INFOTEKNIK VOL. 6 NO. 2 2005
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v6i2.1676

Abstract

Cerucuk galam is the answer for soil with soft clay condition which always soaked under water as effort of soil reinforcement. The use of cerucuk galam is very suitable with condition of alluvial soil that is widely spread inKalimantan, especially inSouth Kalimantan. There are many galam material inKalimantanand its prices relatively cheap. The use of many workers as galam wood seeker, distributor and driving pile cerucuk galam will reduce number of unemployment.This paper are based on observation and experience in the use of cerucuk galam to build up stockpile for PT. Tanjung Alam in Sungai Puting. There has not been teories yet that support the use of cerucuk galam as soil reinforcement. On this paper, the analysis is done with the use of theories approximation from Pusat Litbang Jalan, Badan Litbang P. U. based on experience in many soft clay soil location inIndonesia. The embankment on soft clay soil as coal truck traffic and as coal stockpile is not cause soil fall and the cost for build it is relatively low. Soil reinforcement with combination of cerucuk galam will bring good result on stabilization, safety and economic for build constructions on soft clay soil
IDENTIFIKASI KUALITAS PERAIRAN DI SUNGAI KAHAYAN DARI KEBERADAAN SISTEM KERAMBA STUDI KASUS SUNGAI KAHAYAN KECAMATAN PAHANDUT KALIMANTAN TENGAH Rezha Setyawan; Achmad Rusdiansyah; Hafiizh Prasetia
INFO-TEKNIK Vol 13, No 2 (2012): INFOTEKNIK VOL. 13 NO. 2 2012
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v13i2.1836

Abstract

Air merupakan sumber daya alam yang memenuhi hajat hidup orang banyak sehingga perlu dilindungi agar dapat bermanfaat bagi hidup dan kehidupan manusia serta mahkluk hidup lainnya. Sungai Kahayan yang berada di Kec. Pahandut Provinsi kalimantan Tengah yang merupakan salah satu sumber air berupa daerah aliran sungai  yang rentan terhadap pencemaran, khususnya dari aktivitas sistem keramba ikan yang menyebabkan penurunan kualitas air di perairan akibat dari sisa pakan dan kotoran yang apabila terdegradasi oleh mikroorganisme pengurai akan meningkatkan konsentrasi nutrient berupa nitrat dan fospat. Tujuan dari penelitian ini untuk mengetahui status kualitas air dilihat dari DO, pH, BOD, dan kandungan amoniak (NH3) yang berada di perairan Sungai Kahayan yang didukung dengan parameter kecerahan, kedalaman, dan kecepatan arus. Sampling dilakukan di 5 stasiun mulai dari Jembatan Kahayan sampai dengan Pembataan yang dipilih secara purposive. Pengukuran dan pengambilan sampel dilakukan pengukuran langsung dilapangan (in situ) dan di laboratorium (ex situ). Analisis data dilakukan dengan menggunakan metode environment quality index (EQI). Status kualitas air diperairan Sungai Kahayan berdasarkan metode environment quality index (EQI) tergolong dalam kelas I dimana kisaran nilai KA yang rata-rata berada pada 0,21 – 0,40  yaitu tergolong buruk, menurut PP no 82 Tahun 2001 kualitas air Sungai Kahayan masih belum sesuai dengan kriteria baku mutu air kelas I. Nilai parameter DO dan pH masih mendekati ambang baku mutu yang berkisar (kisaran 4,63 mg/L -6,20 mg/L), dan (5,06-6,09)  namun NH3 dan BOD masih jauh dalam baku mutu air minum yaitu (0,62 mg/L -1,02 mg/L), dan (4,20-12,62 mg/L). Hasil penelitian menunjukkan bahwa sistem keramba yang ada di Sungai Kahayan menyebabkan penurunan kualitas air, khususnya meningkatkan  parameter BOD, dan kandungan amoniak (NH3).
UPAYA PENGURANGAN POLUTAN DARI MESIN S.I. DENGAN MEMANFAATKAN ZEOLIT Yuniarto Agus Winoko; Bambang Irawan; Bambang Sulistiyono
INFO-TEKNIK Vol 15, No 2 (2014): INFOTEKNIK VOL. 15 NO. 2 2014
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v15i2.225

Abstract

Zeolites including absorbent types that can absorb exhaust emissions of combustion are not stochiometri, through the activation process consists of physical and chemical processes. Zeolite powder which has been active subsequently compacted and placed in the vehicle exhaust. The purpose of the research to determine how much change the optimum emissions, minimum and average of carbon monoxide (CO) and hydrocarbons (HC) are mounted in a standard exhaust from extensive contacts zeolite catalyst 1300, 1760, 2260cm2. In addition, to determine how large the percentage change in the optimum power, minimum and average of 1486cc engine when installed catalyst with extensive contacts with the standards. How large is the current AFR optimum and minimum reduction CO, HC, and the power generated. Test method for the activation of the catalyst using the BET and testing of power, torque, emissions of CO and HC engine valve opening fully to start the engine rev up to 4000rpm stationary. Large volumes of fuel 100ml, with a range of changes in the engine rotation 500rpm for each test.The results showed a large reduction of 45.54 optimum.%, Minimum 44.00.% And the average CO at 44.97.% While the HC reduction of 31.44%, minimum, optimum average of 33.33% and 32.44% to the 3000 standard round for CO and HC 2500 for wide when contact 1760cm2. 9.31% decline optimum power, minimum of 6.83% and an average of 7.86% at 14.78 AFR and 3000rpm.Keywords: carbon monoxide, hydrocarbon, power
ANALISIS FAKTOR PENYEBAB TERJADINYA KETERLAMBATAN PADA PELAKSANAAN PROYEK PEMBANGUNAN JEMBATAN Candra Yuliana
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.v14i2.297

Abstract

Every construction project in general has a plan and implementation schedule that has been determined, when the implementation of the project starts, when it ends and can be completed on a predetermined time / planned. However, not all construction projects can be completed at a predetermined time. For that in this study ditelitilah factors that could cause delays on the bridge construction project case studies Batulicin Ring Bridge / South Kalimantan Province Tanah Bumbu.The method used in this research is the study of literature and data collection was done by the spread koesioner. The data were processed using nonparametric statistics using the program Statistical Product and Service Solution (SSPs) and Microsoft Excel to get the value of the Relative Rank Index (RRI) based Critical index that depends on the frequency and level of impact levels that would indicate the rank of the factors that influence in bridge construction project delays.The results showed that the most dominant factor causing delay in implementation of the project is the unpredictable weather conditions earlier, shortages of labor or personnel, equipment shortages, errors that occur during the execution of the project that must be done again, the prediction of the location of the field / geographical project , a factor late in paying wages, a complete lack of planning and the material factors that are used rarely found in the market.
TINJAUAN TINGKAT KERUSAKAN BANGUNAN AKIBAT PENGARUH GETARAN PEMANCANGAN PONDASI TIANG PADA HOTEL MENTARI BANJARMASIN Rusdiansyah Rusdiansyah
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.v10i1.1758

Abstract

Dalam kajian ini membahas tentang tinjauan tingkat kerusakan bangunan akibat pengaruh getaran pemancangan pondasi tiang pada proyek pengembangan Hotel Mentari Banjarmasin. Metode yang menggunakan data kalendering pemancangan pondasi tiang untuk mendapatkan nilai frekuensi dan amplitudo yang dihasilkan dari proses  pemancangan tersebut.Setelah diketahui tingkat kerusakan secara teoritis, kemudian dibandingkan dengan kerusakan bangunan hasil pengamatan langsung di lapangan. Tingkat kerusakan pada bangunan SD Kartika VI bagian I dan II ditinjau dari analisa perhitungan dan pengamatan langsung di lapangan menunjukkan kesesuaian, namun lain halnya untuk bangunan Hotel Mentari lama yang menunjukkan ketidaksesuaian. Setelah dilakukan pengamatan lebih lanjut ditemui beberapa variabel penyebab ketidaksesuaian tersebut. Variabel-variabel tersebut adalah jarak sumber getaran terhadap bangunan dan karakteristik bangunan itu sendiri yang meliputi umur bangunan, dimensi bangunan, dan jenis pondasi yang digunakan.Untuk mengantisipasi kerusakan yang parah atau terjadinya keruntuhan, maka diberikan suatu solusi alternatif berupa isolasi getaran pasif, yaitu galian terbuka dan pipa berongga. Setelah melalui proses perhitungan dan pertimbangan kemungkinan pelaksanaan pekerjaan di lapangan untuk pemberian isolasi getaran, ternyata pipa berongga dengan selimut beton merupakan jenis isolasi getaran yang paling memungkinkan untuk diberikan dalam upaya melindungi bangunan sekitar dari pengaruh getaran pemancangan pondasi tiang.
PERANCANGAN HOTEL LIMA BELAS LANTAI DI BANJARMASIN Bengawan L. Kosasih
INFO-TEKNIK Vol 15, No 1 (2014): INFOTEKNIK VOL. 15 NO. 1 2014
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v15i1.230

Abstract

Multy story building  is a building that has more than one floor. The higher the more complicated calculation of construction. In this final project, entitled "Design of Fifteen Story Building Hotel in Banjarmasin" aims to produce multi-story building are safe and can function as it should.            The building is divided into super structures and substructure. Calculation of the structural design analysis is aided by the program SAP 2000. For the upper structure calculation using the rules of SNI 2002. And for the calculation of the foundation is using the Pile Capacity of Static Cone Test method.            From the design result dimensions of the primary beam B1 (35/70), B2 (37,50/75), B3 (50/100) 30/40 and dimensions of the secondary beam B4 (35/65), B5 (35/65), B6 (35/65), and B7 (35/70) with thickness of slabs is 150 mm. Whereas, dimension of the primary beam at dak is 30/45 and 25/40 for secondary beam with thickness of slabs is 150 mm. The thickness of shearwall is 35 mm The diameter of pile foundation is used in this building is 70 cm with a length of 38 meters. The foundation is divided into 4 types where each type has a number of piles as much as 11 to 22 piles. Keywords:  pile foundations, SAP 2000, Pile Capacity of Static Cone Test method
The Study of Gas Emission on Natural Gas Leak Localization Muthia Elma
INFO-TEKNIK Vol 9, No 2 (2008): INFOTEKNIK VOL. 9 NO. 2 2008
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v9i2.1749

Abstract

 Abstract - The aim of this study is to measure gas emission (CH4 and CO2) coming from natural gas leak localization in the soil. Natural gas is injected into soil in different depths and then analyzed by gas detector and micro gas chromatography to know the values CH4, C2H6, C3H8, C4H10, C5H12, O2, N2 and CO2 which is spread out into soil. When there are leaks in the soil, methane (CH4) will spread out underground. Methanotropic bacteria will use this natural gas as an energy source and transform it into carbon dioxide. The micro gas chromatography data was found that the pipes injected from 20 cm leak are 77.16% CH4 loss in 70cm depth, 73.15% in 50cm depth and 14.08% in 20cm depth. And the pipes injected from 30 cm leak are 20.27% in 30 cm depth and 65.13% in 60 cm depth. Then, the pipes injected from 50 cm leak are 23.40% in 30 cm depth and 47.40% in 60 cm depth. The leak source is in 80 cm depth.
B SERIES ENGINE PROPELLER MATCHING Studi Kasus Kapal Kontainer 100 TEUs nurhadi nurhadi; Sumarsono Sumarsono
INFO-TEKNIK Vol 18, No 2 (2017): INFOTEKNIK VOL. 18 NO.2 2017
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v18i2.4347

Abstract

The alignment of the propulsion system on the vessel will greatly affect the magnitude of the resulting effectiveness to the speed of the vessel. To get a good system required a synchronization between the performance of propellers with the ship propulsion engine. Alignment that commonly known as engine propeller matching is done by finding the intersection between propeller characteristic graph with Thrust load coefficient at the operational point. The engine is adjusted as needed and can be optimally utilized based on the needs and characteristics of propeller.This paper will present propeller matching engines of propeller type B-Series 4-65 used on 100 TEUs Container Ships. Based on the load calculation results obtained propeller efficiency at 12 knots speed is only 0.43 far from the maximum efficiency that can be obtained. By using CAT 3516B engine type maximum speed 100% MCR that can be reached is 12 knots in rough hull condition.
Koefisien Hidrolika Aliran Air yang Melewati Suatu Orifice Berbentuk Segitiga Abdul Ghofur
INFO-TEKNIK Vol 2, No 1 (2001): INFOTEKNIK VOL. 2 NO. 1 2001
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v2i1.448

Abstract

Kecepatan aliran air yang melewati suatu orifice yang  diperoleh secara teoritis harganya harganya ternyata berbedaan dengan kecapatan aliran yang diperoleh secara eksperimen. Perbandingan kedua kecepatan ini dinyatakan dengan koefisien hidrlik untuk kecepatan, demikian pula terhadap laju aliran volume air yang melewati orifice tersebut yang dikenal dengan koefisien hidrolik untuk discharge. Dengan mengetahui koefisien-koefisien hidrolik aliran air yang  melalui  suatu orifice maka dapat ditentukan ula discharge aliran pada setiap saat tertentu atau pengaturan aliran fluida dapat dilaksanakan. Disamping itu juga kita akan mengetahui karakteristik sifat aliran yang akan melalui suatu orifice.Penelitian ini bermanfaat untuk mengetahui karakteristik suatu aliran yang melewati orifice sehingga pada akhirnya kita juga dapat menempatkan atau memasang suatu pipa orifice dengan tepat  sehingga kerugian aliran dapat dikurangi dan kita juga akan dapat merencanakan suatu sistem perpipaan dengan baik.Dari hasil penelitian pada orifice berbentuk segitiga didapatkan hasil koefisien kecepatan rata-rata (Cv) = 0,932, koefisien discharge rata-rata (Cd) –0,805 dan koefisien konstraksi rata-rata (Cc) = 0,863.

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