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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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STABILISASI TANAH LEMPUNG MENGGUNAKAN CAMPURAN GYPSUM DAN GARAM DAPUR TERHADAP KUAT GESER DAN DAYA DUKUNG TANAH Dion Wiratama; Okrobianus Hendri; Fatma Sarie; 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.v23i2.14561

Abstract

Tanah memiliki peranan penting dalam berbagai macam pekerjaan konstruksi bangunan dan jalan karena tanah berfungsi sebagai dasar pondasi yang meneruskan beban diatasnya. Tanah lempung merupakan salah satu jenis tanah yang memiliki daya dukung rendah atau buruk, yang dapat menyebabkan penurunan bangunan dan jalan. Penelitian ini bertujuan untuk mengetahui sifat fisis tanah, sifat mekanik tanah dan untuk mengetahui pengaruh penambahan campuran dan pengawetan tanah terhadap daya dukung (qu) dan kuat geser tanah (τ) pada lempung. disubstitusi dengan campuran gipsum dan garam meja dengan variasi 0%, 5%, 7,5%, dan 10% dan waktu pemeraman 0 dan 4 hari. Berdasarkan hasil pengujian sifat fisis tanah, nilai persentase tanah yang lolos saringan No. 200 adalah 56,04% > 50%, nilai batas cair (LL) = 42,91%, indeks plastisitas (IP) = 20,07% dan GI = 9%. Berdasarkan klasifikasi USCS, dapat disimpulkan bahwa tanah yang diuji termasuk dalam kelompok CL (lempung anorganik) dengan plastisitas rendah sampai sedang. Berdasarkan klasifikasi AASHTO, tanah tersebut termasuk dalam kelompok A-7-6 (9) atau tergolong tanah lempung dengan kondisi sedang sampai buruk. Hasil pengujian sifat mekanik diperoleh nilai daya dukung tanah asli yaitu qult = 1,1835 kg/cm2 dan meningkat sebesar 236,91% menjadi, qult = 3,9874 kg/cm2 setelah penambahan campuran 10% yang terdiri dari 7,5 % gypsum dan 2,5% garam meja dengan 4 hari pengawetan. Pada uji geser langsung diperoleh kuat geser tanah asli yaitu (τ) = 0,1489 kg/cm2 dan turun sebesar 4,65% menjadi (τ) = 0,1356 kg/ cm2
Identifikasi Faktor Penyebab Waste Dengan Menggunakan Pendekatan Lean Construction Pada Proyek Pembangunan Jembatan Sei Alalak Banjarmasin Oryza Lhara Sari; Rafdtonado Situmorang; Nadia Septiana
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.v23i1.14293

Abstract

Penyedia jasa konstruksi harus siap menghadapi berbagai masalah yang mungkin timbul selama pelaksanaan suatu proyek konstruksi. Permasalahan yang terjadi dapat berupa pemborosan pada saat pelaksanaan proyek yang dapat merugikan jasa konstruksi. Untuk meminimalisir kerugian pemborosan yang terjadi harus dimiliki oleh perusahaan. Dalam hal ini peneliti akan melakukan penelitian terhadap proyek pembangunan Jembatan Sei Alalak Banjarmasin yang merupakan jembatan cable-stayed lengkung pertama di Indonesia. Tujuan dari penelitian ini adalah untuk mengetahui faktor yang paling berpengaruh penyebab terjadinya waste. Dalam penelitian ini, peneliti menggunakan 8 variabel dan 84 indikator sebagai referensi yang sebelumnya diperoleh dari studi literatur dan wawancara ahli. Metode yang digunakan peneliti untuk mengidentifikasi faktor penyebab pemborosan yang paling berpengaruh adalah metode indeks frekuensi, indeks keparahan, dan indeks kepentingan serta menggunakan alat yang ada pada konstruksi lean untuk mengatasi pemborosan yang paling berpengaruh. Hasil dari penelitian ini, didapatkan faktor penyebab waste yang paling berpengaruh yaitu; X2.6 cuaca buruk dengan persentase indeks 42,25%; X1.2 mengawasi pembuatan beton mulai dari penimbangan material hingga batching plant dengan indeks persentase 41,17%; X1.12 menguji dokumen dengan indeks persentase 41,00% Kata kunci: Konstruksi Ramping, Limbah, Jembatan Sei Alalak
ANALISIS TINGKAT KEBISINGAN DISEKITAR BANDARA TJILIK RIWUT AKIBAT AKTIVITAS PESAWAT TERBANG Riski Adetama; Ina Elvina; Murniati Murniati
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.v23i2.14514

Abstract

Seiring dengan semakin meingkatnya Pembangunan dalam segala bidang termasuk kemajuan transportasi udara di Kota Palangka Raya maka perlu dilakukan analisis tingkat kebisingan sekitar bandara di kota Palangka Raya untuk menilai apakah tingkat kebisingan di sekitar bandara kota Palangka Raya telah melebihi baku mutu berdasarkan keputusan Menteri Negara Lingkungan Hidup No.48/MENLH/11/1996, tingkat kebisingan yang melebihi standar tersebut berpotensi menyebabkan gangguan kesehatan dilingkungan sekitar bandara. Menganalisis tingkat kebisingan yang terjadi di sekitar Bandar Udara Tjilik Riwut Palangka Raya. Dengan metode perhitungan yang digunakan yaitu metode Weighted Equivalent Continuous Perceived Noise Level (WECPNL) dan menggunakan alat pengukur kebisingan Sound Level Meter (SLM). Dari hasil penelitian pada lokasi penelitian Tingkat kebisingan dengan menggunakan WECPNL(Weighted Equivalent Continuous Perceived Noise Level) didapatkan hasil yaitu dengan intensitas kebisingan tertinggi yang terdapat terdapat pada titik 2 yaitu 76,76 dBA. Kemudian untuk Tingkat Kebisingan yang terendah yaitu dititik 5 merupakan daerah pemukiman warga sebesar 66,14 dBA. Tingkat kebisingan pada tahun 2021 dan 2022 melebihi baku mutu yang telah di tetapkan pada peraturan Keputusan Menteri Negara Lingkungan Hidup No. KEP-48/MNLH/11/1996 tanggal 25 Nopember 1996, untuk daerah perumahan dan sekolah yaitu 55 dBA.
ANALISIS DAN PERANCANGAN ALAT ASAP CAIR MENGUNAKAN SISTEM PENDINGIN KONDENSOR TIPE SPIRAL Jainal Arifin; Firda Herlina; 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.v23i2.14418

Abstract

Liquid smoke consists of phenolic compounds, carbonyl compounds, acids, water, tar compounds, and benzopyrene. Natural wood material consisting of hemicellulose, cellulose, and lignin decomposes at high temperatures into more than 300 compounds consisting of more than 70 types of carbonyls as ketones and aldehydes, 20 types of acids, 11 types of furans, 45 types of phenols, 13 types of alcohols and esters. , 12 types of polycyclic aromatic carbon, and 13 types of lactones. The research method is by designing tools, and cutting/making liquid smoke tools, then drying them in the sun to be completely dry, Weighing the coconut material before putting it into combustion, assembling and connecting the house pipe hose from the reactor to the tar to the condenser pipe, making sure there are no the leak between the connections, before being put in the combustion furnace, turn on the fire in the reactor tube, install the condenser pipe in the condenser tube and fill the water in the condenser tube, record the results of liquid smoke every 8 hours and fill the material into the combustion tube. From the results of the research that has been carried out, there are differences in the results of liquid smoke obtained, then the charcoal results obtained, there is a difference in weight produced between the previous tool and the tool that is now designed, the most influencing factor is the condenser design, where the condenser can cool the smoke that comes out , due to the long cooling cycle that affects the results. The results obtained on the previous tool were 3.754 ml of liquid smoke, 6.5 kg of residual charcoal, and liquid smoke yield of 12.5% ​​with a burning time of 48 hours, and the production rate of liquid smoke was 78.2 ml/hour. The results of the research obtained on the new tool produced 7.095 ml of liquid smoke, 5.6 kg of residual charcoal, and 23.6% yield of liquid smoke with a burning time of 48 hours, and the production rate of liquid smoke was 147.8 ml/hour.
IDENTIFIKASI SOLUSI KONTRAKTOR TERHADAP PENERAPAN GREEN CONSTRUCTION PADA INDUSITRI KONSTRUKSI DI BALIKPAPAN Syafira Vesseli Nata; 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.v23i1.13695

Abstract

The green construction concept design in the scope of civil buildings has the potential and effectiveness to reduce environmental damage. In order for the Green Construction concept to be implemented, it needs to be disseminated to contractors. The understanding of the parties needs to be known to determine the readiness to follow up on the concept. This study aims to determine the solutions that can be given to apply the concept. The most dominant solution is 93.3%, namely Building a building system that is efficient in using energy.. This research can be the basis for further research on green construction in the Construction Industry
PENGARUH CAMPURAN ABU TERBANG (FLY ASH) DAN ASAM FOSFAT TERHADAP DAYA DUKUNG TANAH LEMPUNG Muhammad Reza Pratama; Okrobianus Hendri; M. Ikhwan Yani
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.v23i2.14511

Abstract

Based on observations in the field, the village of Tanjung Sanggalang is dominated by clay soil. Construction on clay soil, if not handled properly, can affect the construction on clay and can accelerate damage after the construction is completed. The alternative used to improve clay soil to make it more stable is soil stabilization using a mixture of fly ash and phosphoric acid. The purpose of this study was to analyze the physical properties of the soil and to analyze the bearing capacity of the soil before adding fly ash (A.T.) with phosphoric acid (A.F) and adding fly ash (A.T.) with phosphoric acid (A.F). The percentage of mixture for fly ash ash is 7.5% and for phosphoric acid the percentage of mixture is 5%, 7.5%, 10%. Based on the results of the study, the variation of the mixture experiencing changes in the bearing capacity of the highest soil is clay with a mixture of A.T. 7.5% and A.F. 10% of the yield, fly ash and phosphoric acid can increase the bearing capacity of clay soil.
STUDI PENGGUNAAN AIR TANAH DANGKAL PADA KECAMATAN KURAU KABUPATEN TANAH LAUT Ulfa Fitriati; Saud Lukman Hakim
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.v23i1.13885

Abstract

Air tanah dangkal adalah air yang berada di bawah permukaan tanah. Air tanah dangkal seringkali digunakan masyarakat dengan cara membuat sumur dangkal yang untuk memenuhi kebutuhan air rumah tangga. Dengan minimnya sebaran air PDAM membuat warga di Kecamatan Kurau sebagian besar masih menggunakan sumur dangkal untuk memenuhi kebutuhan air rumah tangga. Pada penelitian ini akan dianalisa besarnya penggunaan air, kebutuhan air, dan kualitas air tanah dangkal pada Kecamatan Kurau. Cara pengambilan data di lapangan adalah dengan membagikan kuesioner dan mewawancarai warga di 60 RT yang ada di Kecamatan Kurau. Kemudian dilakukan pengambilan satu sampel air disetiap desa untuk diteliti lebih lanjut di Laboratorium menggunakan alat U-50 Horiba. Hasil analisis dapat dilihat kebutuhan air tanah dangkal di Kecamatan Kurau sebesar 139 liter/orang/hari. Dilakukan pengujian pada kualitas airnya jika digunakan sebagai bahan baku air minum menurut nilai kekeruhan (NTU) dan Jumlah Zat Padat Terlarut (TDS) dinyatakan memenuhi, sedangkan menurut nilai derajat keasaman (pH) ada 1 desa yang tidak memenuhi yaitu Desa Srikandi.
DESIGN OF MARTAPURA RIVER BRIDGE STRUCTURE, BANJAR REGENCY Markawie Markawie; Teguh Prastiyo; Ulfa Fitriati; Eddy nashrullah
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.v23i2.15628

Abstract

The Martapura River Bridge is located on Jalan A. Yani KM 40 Martapura, Banjar Regency, South Kalimantan. Traffic processes that occur on Jalan A. Yani KM 40 Martapura often experience problems because congestion often occurs and the condition of the old IA bridge sometimes makes driving users feel restless when crossing the bridge located on the Martapura river. So that at the location of the Martapura river, it is deemed necessary to build a bridge next to the IA bridge so that the IB bridge to be built can be more sturdy and durable so that there is no anxiety for driving users and also to reduce congestion that occurs, where later the IB bridge will be used as a road with one way only towards Banjarmasin and the martapura IA bridge will be used as a one-way road towards the Hulu Sungai so that it will make it easier for traffic on Jalan A. Yani KM 40 Martapura. The methodology used in loading planning refers to SNI 1725-2016 concerning Loading Standards for Bridges. For the methodology in calculating the stress loss, refer to the NAASRA Bridge Design Specification on Chapter VI Bridge Design Specifications (Prestressed Concrete Design). For the methodology in calculating the moment of the vehicle floor using the Three Moment Equation method and for the method of subsidence of group pile foundations using the method of Schultze and Sheriff (1973), assuming that the pile group is the Equivalent Raft Foundation. The material used in the design of the upper structure is prestressed concrete, while the lower structure is planned to use reinforced concrete with a square pile. The results obtained are the T-Girder Prestressed type bridge with class A, 34 m span, 7 m traffic width, and 1 m wide sidewalk. Prestressed T-Girder is designed using fc' 40 MPa (K-482) Strands used are uncoated 7 wire super strands ASTM A-416 grade 270 with a diameter of 12.7 mm and an area of 100 mm2 with a tensile strength of 1860 MPa. As for the lower structure, the abutment uses concrete with a quality of fc' 25 MPa (K-300) with a height of 565 cm, a width of 480 cm and a length of 1050 cm.type piles Square Pile with a length of 15 m with a quality of 50 MPa (K-600) with a width of 60x60 cm with a configuration of 18 piles for each abutment. Estimated Budget Plan The cost of constructing the Martapura river bridge is IDR 8,129.511,475.00.-.
PENGGUNAAN SISTEM INFORMASI GEOGRAFIS (SIG) DALAM ANALISIS DAYA DUKUNG DAN DAYA TAMPUNG LINGKUNGAN HIDUP DI KABUPATEN TANAH LAUT Muhammad Syahirul Alim
INFO-TEKNIK Vol 20, No 1 (2019): INFOTEKNIK VOL. 20 NO. 1 JULI 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v20i1.6964

Abstract

The objective of the study was to provide an overview of the using of Analytical Geographical Information System (GIS) to determine Environmental Carrying Capacity and Capability in Tanah Laut Regency Province of South Kalimantan. The combination methode of Pairwise Comparation and The spatial capacity offered by GIS is directly applicable to understanding the spatial variation by environmental factors. The result of this study shows that carrying capacity and capability can reflect a potential and availability of natural resources in the area of Tanah Laut Regency so that it can be known in which areas have the greatest potential and availability of indicators where the percentage distribution of the extent of the environmental carrying capacity of each ecosistem service potential and the most dominant availability are in the District of Jorong, which is 60% for the High category including 6 Ecosistem Services and 40% for the very high category for 4 Ecosistem Services. 30% Kintap Subdistrict for very high category for 3 Ecosistem Services and 20% for High category includes 2 Ecosistem Services.
MEMANFAATKAN CONDENSATE HYDROCARBON NATURAL GAS SEBAGAI FUEL GAS DENGAN PENGATURAN KONDISI OPERASI ALAT HEAT EXCHANGER Sulardi Sulardi
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.v20i2.7709

Abstract

One of the problems faced in operating the fuel gas system is the loss due to wasting condensate hydrocarbons from the fuel gas system surge drum. The purpose of the study was to determine the factors that cause natural gas condensation problems in the fuel drum supply surge gas and provide an overview of how to overcome the problem with the heat exchanger tool operation method. The method used in the research is the research method used with a case study approach to handling wasted condensate hydrocarbon problems and how to overcome them by maximizing the operation of heat exchanger devices. The expected results from this study are that the removal of hydrocarbon condensate can be prevented and utilized as fuel gas. With the results of this study, it is expected to be an innovation in order to adding value to value creation for the company.

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