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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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ANALISIS FAKTOR PENYEBAB WASTE PADA PROYEK PEMBANGUNAN JALAN TOL BALIKPAPAN-SAMARINDA Fitria Arwina Munawaroh; Oryza Lhara Sari
INFO-TEKNIK Vol 23, No 1 (2022): INFOTEKNIK VOL. 23 NO. 1 JULI 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i1.13855

Abstract

In the implementation of construction projects, one of the problems that often occurs is inefficiency and waste. According to the Lean Construction Institute, in construction projects there is a lot of waste in the form of activities that use resources but do not add value (non-value adding). Project waste will become a problem and can increase project costs if not immediately anticipated. By eliminating waste in non-value-added activities and applying lean tools to essential value-added and non-value-added activities. In this toll road construction project, there is a problem in the form of delays in the construction process caused by several factors, one of which is related to land acquisition. Therefore, it is necessary to analyze the factors causing waste in the Balikpapan - Samarinda Toll Road Development Project. This research aims to find out the waste variables and the factors that cause the most frequent waste in the project. The method used in this research is Borda method. Borda method is used to rank the most frequent variables and factors. The result shows that the most frequent waste variable in Balikpapan - Samarinda Toll Road Construction Project is waiting time which has a weight of 0.187. Meanwhile, the factor causing the most frequent waste in the Balikpapan - Samarinda Toll Road Development Project is due to unfavorable weather which has a weight of 0.074.
Hidrogeologi daerah BRG berdasarkan kondisi hidrologi untuk mengetahui prediksi kesetimbangan Airtanah (Groundwater) Rohima Sera Afifah
INFO-TEKNIK Vol 23, No 1 (2022): INFOTEKNIK VOL. 23 NO. 1 JULI 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i1.13959

Abstract

The rapid increase in groundwater exploitation in various sectors in Indonesia has caused preparations in the form of concrete steps that must be faced, especially reducing the impacts caused. The BRG area is an area known as an area in Geological Conditions the existence of intrusions that may result in retained groundwater flows and are productively small and even rare and in addition to that also in terms of environmental conditions of areas surrounded by large industries in the amount of very large groundwater use. Groundwater intake activities impacted the drawdown of groundwater levels. This study in cased the Water Balance conditions of the BRG area groundwater. This study employs hydrology variable to determine groundwater balance. Variables of Rainfall (CH in mm/yr), Evapotranspiration (ET in mm/yr), Infiltration (R in mm/yr) and Run Off (RO in mm/yr). Balance of Groundwater is based on a general formula of Capacity (S). Capacity (S) is directly proportional to Rainfall (CH) as Inflow and Total amount of Evapotranspiration (ET), Infiltration (R) and Run Off (RO) as Outflow. The study revealed that the inflow and outflow of water in BRG area are balanced. The results of the Hydrological Variables of the study area are as follows: Rainfall (CH) is of 8302 mm/yr average value, Evapotranspiration (ET) is of 2726,6 mm/yr average value, Infiltration (R) is of 2,02 x 107 mm/yr and Run off (Ro) 1316,3 mm/yr. The result of Groundwater Water balance is a negative value (Inflow < Outflow). Hydrological calculations decreased in each year for the last 4 years the observation data showed the negative values were getting greater, as follows: (a) the first year -4.01 x 107, (b) the second year -5.63 x 107, (c) the third year -3.10 x 107, (d) the fourth year -4.72 x 107.
PASIR DAN JANJANG KOSONG KELAPA SAWIT SEBAGAI STABILITATOR TANAH LEMPUNG TERHADAP KUAT GESER DAN DAYA DUKUNG TANAH Febri Nepi Suwendi; Fatma Sarie; Okrobianus Hendri; Eka Putri Setiati
INFO-TEKNIK Vol 23, No 2 (2022): INFOTEKNIK VOL. 23 NO. 2 DESEMBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i2.14599

Abstract

This study used a mixture of clay, sand and Empty fruit bunch of palm oil with the percentage addition of 5%, 7.5%, 10%. The results of physical properties testing carried out on clay taken from Tanjung Sanggalang Village, Central Kahayan District, Pulang Pisau Regency, Central Kalimantan Province. It has values such as, Water Content (w) = 40.77%, Soil Density (γ) = 1.67 gr/cm3, Specific Gravity (Gs) = 2.73, Atterberg limits, namely Liquid Limit = 42.74%, Plastic Limit = 22.68%, Plasticity Index = 20.06%, Shrinkage Limit = 13.15%. According to the USCS classification system, based on the results of the sieve analysis examination, the percentage of material passing sieve no. 200 ( 0.075 mm) is 64.90% > 50% then the soil is a fine grained soil. Based on the Atterberg examination the soil was classified as clayey and included in the CL group with low to moderate plasticity, and according to AASHTO the soil was classified as loamy with loamy soil conditions with moderate to poor conditions and included in group A-7-6 (11) . From the results of the direct shear test of the soil obtained, the shear angle (⌀) = 12.13, cohesion (c) = 0.1406 Kg/ cm2 and the results of the Unconfined Compression test obtained, Unconfined Compression Test (qu) = 0.460 Kg/ cm2 , soil shear cu) = 0.230 kg/ cm2.
Analisis Waste Dengan Pendekatan Lean Construction Pada Proyek Pembangunan Jembatan Sungai Manggar Balikpapan Syam Bima Muhammad Akbar
INFO-TEKNIK Vol 23, No 1 (2022): INFOTEKNIK VOL. 23 NO. 1 JULI 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i1.13972

Abstract

According to Abduh (2007) Indonesian construction industry still has inefficiency in its implementation, which is because there is still a lot of waste on the execution. Efforts to prevent or reduce waste on the project will increase the contractor's profits and minimize the negative effect to environment (Julisa et al., 2019). One method that can be used is lean construction. lean construction has the main objective of continuously increasing production efficiency and eliminating all waste. In this study, a waste analysis using a lean construction approach was carried out which had the most influence on the Manggar River Bridge project. This study uses descriptive analysis of percentages with the aim of describing the condition of the phenomena of the variables and indicators being analyzed. After doing the analysis, it was obtained Waste Lean Construction The most influential on the Manggar River Bridge Project is Waiting with work activities stopped due to bad weather (Waiting) with an impact on this project 131 hours of work or 13.1 working days or the equivalent of 1.79% of the total working days cannot be done due to bad weather.
EVALUASI KAPASITAS TAMPUNG AIR EMBUNG PADA DAERAH LAYANAN AIR MINUM EMBUNG TIRAWAN KABUPATEN KOTABARU TERHADAP JUMLAH PELANGGAN Irwan Azhar
INFO-TEKNIK Vol 23, No 2 (2022): INFOTEKNIK VOL. 23 NO. 2 DESEMBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i2.14491

Abstract

The dry season for the people of Kotabaru is the most difficult period in one year, caused by the phenomenon of water scarcity. Most of the people in Kotabaru very depend on water supply from PDAM. Various efforts to fulfill the community's raw water needs have been carried out such as the construction of the Tirawan reservoir which is expected to be able, for meet the community's raw water needs. In measuring the optimal capacity of the reservoir, it is necessary to calculate the water holding capacity of the reservoir and investigate the area of the Tirawan reservoir. Analysis through rainfall calculation the Log Pearson Type III method. To compare Main capacity and discharge with customer's water requirement, So that it can be seen the service strength of the Tirawan reservoir to meet the water needs of customers during the current dry season and with return periods of 5, 10 and 20 years. The water holding capacity of the Tirawan reservoir is 210,014 m3 with the drainage capacity of the Tirawan reservoir in return periods of 0, 5, 10 and 20 years, to the customer's water demand discharge, respectively, which is Q Flow 0Year = 38.43 m3/s > Q requirement 0 Year = 0, 0632 m3/sec, 5 Year Q Flow = 5 Year Q Flow = 67.34 m3/sec > 5 Year Q requirement = 0.0688 m3/sec, 10 Year Q Flow = 91.97 m3/sec > 10 Year Q Flow = 0.0749 m3/sec and 20 Year Q Flow = 121.03 m3/second > Q20 Year Q requirement = 0.0887 m3/second is estimated to be able to meet customer water needs during the dry season period of 0 Year, 5 Year, 10 Year and 20 Year, respectively, for 92 days, 85 days, 78 days and 66 day.
INSTALASI OFFSHORE DERICK FLARE STACK DENGAN METODE SEGMENTAL Sulardi Sulardi; Agus Sugianto; Basyaruddin Basyaruddin; Mardewi Jamal; Ali Arifin
INFO-TEKNIK Vol 23, No 1 (2022): INFOTEKNIK VOL. 23 NO. 1 JULI 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i1.14109

Abstract

One of the problems in the construction work of the offshore derick flare stack is the difficulty of lifting and installing the steel structure derick flare installation due to the limited length of the boom crane arm. This study aims to provide an overview of working methods to overcome these difficulties. The working method of handling the problem is dividing structural components segmentally, lifting and installing structural segments with roller-based lifting aids and steel ropes. The results showed that the work method was proven to be able to overcome problems and prevent potential delays in completing work. The results of this study also recommend that this work method can be replicated to overcome problems in other work units that experience similar problems.
EVALUASI INVESTASI PADA JASA ANGKUTAN UMUM TRAVEL DENGAN METODE PAYBACK PERIOD (PBP) JURUSAN PALANGKARAYA-BANJARMASIN Dumi Junepri; Desi Riani; Ina Elvina
INFO-TEKNIK Vol 23, No 2 (2022): INFOTEKNIK VOL. 23 NO. 2 DESEMBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i2.14500

Abstract

Biaya merupakan suatu yang harus dikeluarkan untuk memproduksi jasa pelayanan, untuk itu perlu diperhitungkan pembebanan biaya secara objektif dan cermat agar dapat dipergunakan sebagai dasar acuan biaya yang dikeluarkan. Perkembangan daerah-daerah yang semakin pesat dan meningkatnya permintaan akan sarana angkutan penumpang antar kota antar provinsi termasuk jurusan Palangka Raya-Banjarmasin sehingga dibutuhkan analisis kelayakan investasi suatu penyedia jasa. Tujuan penelitian untuk mengetahui berapa tahun penyedia jasa angkutan umum dapat kembali modal berdasarkan perhitungan Biaya Operasional Kendaraan (BOK). Metode yang digunakan adalah metode survei dan wawancara, pengambilan sampel berdasarkan asumsi peneliti. Metode analisis yang digunakan adalah metode Direktorat Jenderal Perhubungan Darat Tahun 2002 dan Payback Period. Setelah melewati tahap analisis, maka diperoleh Besar biaya operasional kendaraan angkutan antar kota antar provinsi (AKAP) jurusan Palangka Raya-Banjarmasin pada CV. Sumertha Sari Travel adalah Rp2.462,52/kend-km, CV. Borneo Express Travel adalah Rp2.308,94/kend-km, dan CV. Aneka Daya Travel adalah Rp2.185,45/kend-km dan Lama penyedia jasa angkutan umum travel jurusan Palangka Raya-Banjarmasin dapat kembali modal dengan metode Payback Period untuk CV. Sumertha Sari Travel adalah 6 tahun, untuk CV. Borneo Express Travel adalah 5 tahun,dan CV. Aneka Daya Travel adalah 6 tahun.
PEMILIHAN JENIS AIRFOIL NACA UNTUK PERENCANAAN TURBIN ANGIN DI GEDUNG BARU FAKULTAS TEKNIK UNIVERSITAS ISLAM KALIMANTAN BANJARMASIN Rendi Rendi
INFO-TEKNIK Vol 23, No 2 (2022): INFOTEKNIK VOL. 23 NO. 2 DESEMBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i2.14385

Abstract

Kebutuhan energi terus meningkat di indonesia, sedangkan ketersediyaan energi semakin menipis sehingan diperlukan upaya untuk mencari energi alternatif lainyang bersifat renewable dan ramah lingkungan. Gedung Baru Fakultas Teknik Universitas Islam Kalimantan Banjarmasin memiliki kondisi angin yang cukup baik dan dapat diamnfaatkan untuk menciptakan energi melalui energi angin. Penelitian ini bertujuan untuk menentukan jenis Jenis Airfoil NACA Untuk Perencanaan Turbin Angin di Gedung Baru Fakultas Teknik Universitas Islam Kalimantan Banjarmasin. Metode yang digunakan dimulai dari studi literatur, memilih airfoil, analisa data, memilih airfoil terbaik. Data awal yg digunakan sebagai awal perancangan adalah data kecepatan angin antara 3-6 m/s. Dari Airfoil yang di simulasikan yaitu NACA 5412, NACA 6409, NACA 4412, NACA 3410 dan NACA 2414 maka Airfoil yang paling cocok Untuk Perencanaan Turbin Angin di Gedung Baru Fakultas Teknik Universitas Islam Kalimantan Banjarmasin adalah NACA 5412 karena memiliki nilai Cl tertinggi dibandingkan jenis NACA lain yaitu Cl sebesar 1.65 pada Alpha 15.2
PENGEMBANGAN BIOGAS SAMPAH PASAR Budi Nining Widarti; Gadis Dilasari; Edhi Sarwono
INFO-TEKNIK Vol 23, No 1 (2022): INFOTEKNIK VOL. 23 NO. 1 JULI 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i1.14136

Abstract

The traditional market has degradable waste, especially from the types of vegetables and left over food, the waste is not managed properly will potentially cause disease and poor aesthetics. There are various kinds of recycling and waste utilization efforts to reduce the potential negative impacts and produce a product that is more economically valuable so that the volume of waste does not continue to increase. Based on this consideration, it is necessary to study the generation and composition of waste as well as the potential for biogas from waste in Pasar Pagi Samarinda. The organic material of Pasar Pagi waste which is used as energy through the anaerobic digestion process can be considered from the quality of the biogas and the volume of biogas produced. The determination of waste generation and volume of waste is calculated based on the number of traders in the Pasar Pagi. The biogas production in the digester uses organic waste raw materials from Pasar Pagi and rumen liquid in a ratio of 1:1. The Calculation of gas formed was carried out using a U manometer, temperature measurements using a thermometer, pH measurements using a pH meter were carried out every day and VS measurements were carried out every seven days. The mass of Pasar Pagi waste was 1.81 kg/trader/day and for the volume unit is 4.90 L/trader/day. The total composition of organic waste for vegetables, fruit, and food waste was 85.5%, organic waste in the form of cardboard or paper waste was 2.9%, the composition of plastic waste was 10.7% and metal was 0.9%. The pH of the digester during the formation of biogas shows an acidic condition, and the increase in pH that occurs is only able to reach pH 6 or close to neutral. The temperature in the digester at the beginning of the process tends to increase, then decreases and increases again at the end of the process, but does not affect the biogas production that is still ongoing. The addition of cow rumen contents was able to increase the volume of biogas formed in organic matter and the VS value decreased every week accompanied by the increase in biogas production. This shows that the organic waste in Pasar Pagi has the potential for biogas production.
PERBAIKAN FAKTOR DAYA OTOMATIS PADA BEBAN INDUKTIF DENGAN IMPLEMENTASI AIR COIL MENGGUNAKAN MIKROKONTROLER ARDUINO Muhammad Rafli Bolkiah; Henry Prasetya; Yuliarman Sarigih; Dian Budhi Santoso
INFO-TEKNIK Vol 23, No 2 (2022): INFOTEKNIK VOL. 23 NO. 2 DESEMBER 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v23i2.14270

Abstract

Peralatan yang bersifat induktif ini menyebabkan rendahnya nilai faktor daya listrik. Rendahnya nilai faktor daya (cos φ) dalam suatu sistem tenaga listrik adalah sebuah masalah yang harus diminimalisir. Dengan rendahnya nilai faktor daya akan menyebabkan kerugian bagi konsumen maupun bagi produsen listrik.Perbaikan faktor daya dilakukan dengan memasang kapasitor bank secara paralel dengan beban. Penggunaan relay pada proses switching kapasitor bank dapat menyebabkan gangguan transient yang dapat mempengaruhi kualitas tegangan. Air Coil digunakan untuk mengurangi gangguan transient pada proses switching.Hasil Pengujian dengan implementasi Air Coil pada kapasitor bank menunjukkan adanya perubahan nilai faktor daya, adapun hasil pengujian yang dilakukan pada pukul 06.00 untuk beban kipas angin 46 watt mengalami kenaikan nilai faktor daya sebesar 2 %, kipas angin 36 watt sebesar 2 %, televisi 80 watt sebesar 1 %.

Page 36 of 43 | Total Record : 425

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