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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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PENGARUH WAKTU FERMENTASI DAN PERSENTASE STARTER PADA NIRA AREN (Arenga pinnata) TERHADAP BIOETHANOL YANG DIHASILKAN Isna Syauqiah
INFO-TEKNIK Vol 16, No 2 (2015): INFOTEKNIK VOL. 16 NO. 2 2015
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v16i2.205

Abstract

Bioethanol can be produced from the fermentation of sugar-containing materials such as cassava, corn and sugar palm juice.  This study aims to determine the effect of fermentation using Saccharomyces sp at various percentages starter towards substrate ability to produce bioethanol. Variation of fermentation time used are 25, 50 and 75 hours. Keywords: Bioethanol, fermentation, sugar palm juice, Saccharomyces cerevisiae
EVALUASI DAN PERENCANAAN SALURAN DRAINASE DI JALAN SANGGA BUANA II KOTA PALANGKA RAYA Agustulusnu Agustulusnu; I Made Kamiana; Raden Harya Saputra
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.v20i2.7719

Abstract

The siltation occurs nearly along the drainage channel at Sangga Buana II Street Palangka Raya. The catchment area for rainfall is increasingly dense with both residence and shop buildings so that the recharge area is also getting decreased. These factors are assumed able to cause a bigger flood. This study aims to evaluate the flood potential in the channel and design the dimensions of the channel required if the drainage discharge consists of design-discharge with a 2-year return period and domestic-wastewater discharge. This study is conducted in 2019 by using a survey approach. The flood potential is analyzed based on the comparison between both the drainage capacity and drainage discharge. The channel capacity is analyzed by the Manning method while the drainage discharge is analyzed by the Rational method. The domestic-wastewater discharge is assumed equally to 80% of the total use of clean water. The result of study showed that the channel capacity is smaller than the drainage discharge, and it occurs almost along the drainage channel of Sangga Buana II Street Palangka Raya. It means that the channel has flood potential so that it needs to be re-designed. The channel is designed with an opened-channel type and squared-shape with 0,65 m width and 0,65 m depth. The discharge direction is divided into two directions. The first direction flows to the drainage channel at Batu Suli Street while the second one flows to the drainage channel at Lawu Street. It is needed to build box culvert in the five locations to ensure that the discharge direction can flow to the drainage channel both at Batu Suli Street and Lawu Street.
Studi Perencanaan Saluran Samping Ruas Jalan Bayangkara Tanah Grogot Kabupaten Pasir Rosehan Anwar
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.v8i1.1717

Abstract

Evaluation from the existing drainage infrastructure, there is indication that level of the need has exceeded level of service. If we evaluated the problem in general, hence arising problem are the presence of ponds especially as result at rain water at low land district, and drag of current as result of by rain intensity that is blow far again. Therefore the planning of new drainage systems is important supporting development of region.Analysis method applied are hydrology method and hydraulic method.Result of planning drainage is got by side passage which form of trapezium, basic breadt h=0,55m, maximum water dept= 0,35m, dip of passage basic=0,934%, passage height=4,2m, passage peak with = 0,75m, side passage with form of rectangular b=2d, basic breadth=0,33m, maximum water depth=0,66m, did of passage basic=1,33%, passage height=5,75m,gorong-gorong(cloced channel), diameter (D) =0,57m, water height (d) = 0,46m, dip of passage basic (i) = 0,5%.
OPTIMALISASI PENGATURAN PERSIMPANGAN JALAN ADYAKSA DAN JALAN CEMARA DI BANJARMASIN Rosehan Anwar; M. Fitriansyah
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.v14i2.299

Abstract

At the intersection of Jl. Cemara dan Jl. Adiyaksa and often times when the vehicles must always stop for a red signal minimal get two times that cause get a long delay. This study aimed to obtain the most excellent service of several alternatives. Intersection analysis method MKJI. With the help of the program exsel to simplify the calculation. conclusions as follows: Level intersection performance Jl. Adhiyaksa – Jl. Sultan Adam - Jl. Cemara Raya – Jl. Cemara Raya 2  Banjarmasin for current conditions (Existing) with 4 phases can in category high degree of saturation. Intersection flow ratio of 0.718, the cycle time of 88 seconds, the average delay across the intersection 84 seconds. For the Service Level Index (ITP) obtained Service Level F.From the analysis of the field data (Existing conditions) with a new design (the condition settings) from some of the alternatives, then get that degree of saturation is smaller and Service Level, using traffic flow arrangement Phase 3 (of 3 alternative design results)
PENENTUAN INTERVAL WAKTU PERAWATAN MESIN INJECTION MOULDING MENGGUNAKAN METODE RCM DI PT “X” Alfian Muhtadi; Etik Puspitasari
INFO-TEKNIK Vol 22, No 2 (2021): INFOTEKNIK VOL. 22 NO. 2 DESEMBER 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i2.12384

Abstract

In the industrialized world, product is the main of a production process that forms a production process system. In order to a system of production process running continuesly, need a maintenance of the equipment and production machines. The machine maintenance is needed to minimize the damage of machine then the machine can be used for a long time. The purpose of the study is to calculate the reliability value in which the interval time of maintenance will be determined so that it can support the reliability of the tool. Method of the study uses the RCM (Reliability Centered Maintenance) to solve machine maintenance problems that often occur at PT “X”. RCM method has the advantage of defining a machine focused maintenance program and avoids unnecessary maintenance activities by specifying appropriate maintenance intervals. This study also presents qualitative data in the form of FMEA analysis (Failure Mode Effect Analysis) and quantitative data in the form of determining reliability values and determining maintenance time intervals which provide a solution for PT. “X”.The result of the study, reliability value of the MJM-JLB-HQ Injection Moulding Machine is 0.9183 at 12 hours, VICTOR Injection Moulding is 0.9243 at 4 hours, and the reliability value of MJM-JLB 198-HQ Mould is 0.5125 at 96 hours, VICTOR's Mould is 0.5063 at 72 hours. For the results of maintenance interval to keep the value of reliability not going down below 0.9 is 12 hours for MJM-JLB198-HQ Injection Molding Machines, then 4 hours for VICTOR Injection Moulding Machines. The result maintenance interval analysis of mould with reliability not going down below the value of 0.5 is 96 hours on MJM-JLB198-HQ Injection Moulding Machine, and 72 hours at VICTOR Injection Moulding Machine.
PENGARUH ORIENTASI SERAT DAN WAKTU ALKALISASI PADA LAMINATES COMPOSITE POLYESTER-SERAT BEMBAN (DONAX CANNIFORMIS) TERHADAP KEKUATAN BENDING, IMPACT DAN BENTUK PATAHAN Akhmad Syarief; Achmad Azhar Basyir; Andy Nugraha Andy Nugraha
INFO-TEKNIK Vol 22, No 2 (2021): INFOTEKNIK VOL. 22 NO. 2 DESEMBER 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i2.12387

Abstract

Plant Bemban (Donax canniformis) is one of the plants that is often found in the swamp area of South Kalimantan that grows wildly on the roadside and around the home garden. The purpose of this study is to find out how large the bending strength and composite impact is reinforced with bemban fiber with polyester matrix with variations in fiber orientation and alkalization time. The method is done by alkalizing the banana fiber with 4% NaOH solution with a variation of 30 minutes, 60 minutes and 90 minutes. The process of making composites with 3 layers varies the direction of fiber A (0°,45°,90°), B (45°,90°,0°), C (90°,45°,0°) and the method used is how to hand lay up. Broken photos after testing using macro photo observations. The results showed that the specimens with the highest immersion time of 30 minutes for bending with variations A (0°,45°,90°) of 112.24 MPa and the lowest at 60 minutes with variation C (90°,45°,0°) amounting to 12.67 MPa. Price impact (HI) is highest at 60 minutes immersion time with variations A (0°,45°,90°) of 0.0208 joule/mm2 and the lowest at 30 minutes immersion time with variation C (90°,45°,0°) of 0.0115 joules/mm2.
PENGGUNAAN KERIKIL PECAH SUNGAI KAHAYAN SEBAGAI ALTERNATIF AGREGAT KASAR PADA CAMPURAN HOT ROLLED SHEET-BASE (HRS-BASE) Hendri Hermanto; Desriantomy Desriantomy; Salonten Salonten
INFO-TEKNIK Vol 22, No 2 (2021): INFOTEKNIK VOL. 22 NO. 2 DESEMBER 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i2.12385

Abstract

Lataston is a mixture commonly used in Indonesia as a pavement structure. In its implementation in the field, implementers are often faced with the high use of aggregate in the Lataston mixture due to limited resources of crushed stone in Central Kalimantan, which usually forms the aggregate in the Lataston mixture imported from outside the region. Gravel from Menen Paduran Village has various grain sizes between 5 mm to 75 mm but has a surface that tends to be round and does not have an angular surface so that the gravel must be crushed using a Stone Crusher in order to meet the characteristics of coarse aggregate in the Lataston base layer mixture. The goal of this research was to find out how the usage of crushed gravel from Manen Paduran Village as coarse aggregate in the Lataston base layer mixture on the Marshall characteristic stability value in the foundation layer Lataston mixture (HRS-Base). The research was carried out in two parts, the first of which was to collect data. was making the test object using crushed gravel. Manen Paduran as coarse aggregate, ex stone ash. Peacock and Tangkiling sand as fine aggregate to obtain Optimum Asphalt Content (KAO). In the second stage is to make the test object using crushed stone ex. Peacock as coarse aggregate, ex stone ash. From the results of these tests, a comparison was made between the use of crushed gravel ex. Manen Paduran and crushed stone ex. Peacock seen from Marshall characteristics. Marshall test results using crushed gravel obtained an optimum asphalt content of 6.85%, Marshall test results obtained that the stability value decreased by 8.8% from the use of ex crushed stone. Peacock and with the use of crushed gravel ex. Manen Paduran is only
ANALISIS TINGKAT KERAWANAN DAN MITIGASI BANJIR PERKOTAAN DI KECAMATAN PULAU LAUT UTARA KABUPATEN KOTABARU Irwan Azhar; Widy Afyat
INFO-TEKNIK Vol 22, No 2 (2021): INFOTEKNIK VOL. 22 NO. 2 DESEMBER 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i2.12388

Abstract

Several efforts are needed in dealing with urban flood disasters to minimize the potential for large losses for the community. By mapping and knowing the pattern of flood distribution, this study was also built to determine the urban flood disaster mitigation system in Pulau Laut Utara District, Kotabaru Regency. The value of the flood susceptibility class interval aims to distinguish the flood susceptibility class, and by determining the intensity of inundation based on the inundation area and the elevation of the flood level. With processing the value from the investigation in Nort Pulau Laut covering several villages and roads, the level of vulnerability to flooding in Dirgahayu Village is 10.24% (low water level), 6.54% (medium water level), 1.33% (high water level). In Sungai Paring Village it was 2.81% (low water level), 10.18% (medium water level), 8.48% (high water level). In Baharu Village, it was 3.69% (low flood), 3.21% (medium water level), 10.87% (high water level). In Semayap Village it was 4.11% (low water level), 2.21% (medium water level), 2.58% (high water level). And in Sebelimbingan Village it was 4.67% (low water level), 3.90% (medium water level), and 8.25% (high water level). With intervals from each flood location, a value of 73.98 was obtained in the category of sufficiently prone to flooding.
KAJIAN MATERIAL SEDIMEN PANTAI BALIKPAPAN UNTUK MENGETAHUI VARIASI UKURAN BUTIR PARTIKEL PASIR (SAND) SEDIMEN Rohima Sera Afifah; Karmila Karmila; Nuruddin Kafy El-Ridlo
INFO-TEKNIK Vol 22, No 2 (2021): INFOTEKNIK VOL. 22 NO. 2 DESEMBER 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i2.12391

Abstract

Along the Balikpapan Beach, there are abundant sand-sized sediment particles. Sand is one of the unconsolidated sediment grains based on fractions on the Wentworth Scale. Unconsolidated Sediment is defined as Loose Material and/or sedimentary rocks that is not yet solid. Balikpapan Beach, based on the Regional Geological Map of Balikpapan sheet, formed the Alluvium Formation (abbreviated as Qa) of the Holocene Epoch, Quaternary. Alluvium formation (Qa) has an arrangement of rocks in the form of pebbles, gravel, sand, and clay. Samples of Unconsolidated Sediment or loose material and sedimentary rocks that is not yet solid are determined for grain size variations using the Sieving method. The Seiving method or Sieve Test is a method for determining the size of the grains which will then be viewed on a scale and followed by the amount of grain size data that will be presented in graphical form to facilitate the type of grain size that dominates. The research focused on how the grain size on Balikpapan Beach based on the Wentworth Scale and Sorting data after the Sieve Test. Sieve Test results measured Mesh#10, Mesh#20, Mesh#40, Mesh#60, Mesh#120, Mesh#200 and Filter Analysis of the relationship between Filter Diameter and Retained Percentage as follows: Granule by 3.53%, Sand (Very Coarse Sand by 3.53%, Coarse Sand by 4.75%, Medium Sand by 13.26%, Fine Sand by 66.26%, Very Fine Sand by 5.15%) and Coarse Silt by 3.35%. Therefore, particles in the area of research with the Sieve Test were dominated by Fine Sand particles. Fine Sand with grain size 0.125 – 0.25 mm tested with a filter diameter of 0.125 mm got a Retained Weight of 331.29 gr, Retained Weight Precentage of 66.26%.
KONSTRUKSI INSTALASI PIPA MIGAS BAWAH LAUT DI TELUK BALIKPAPAN Sulardi Sulardi
INFO-TEKNIK Vol 22, No 2 (2021): INFOTEKNIK VOL. 22 NO. 2 DESEMBER 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i2.12389

Abstract

The purpose of this study is to describe the use of material specifications and methods for the construction of underwater oil and gas pipeline installations. This research uses an applied research method with a case study approach in the context of replacing an underwater oil and gas pipeline from the North Penajam Paser coast to the Balikpapan refinery. The results of the research that can be achieved are that the 399 meter long underwater pipe has been replaced with standard API 5L Grade X52 carbon steel specifications and the large lay method by maximizing pipe welding and technical inspection of the welding results on board. Based on the results of this study, it is also recommended that the material specifications and working methods of underwater pipe installation construction work well are applied in similar work areas.

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