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Muhammad Afief Ma'ruf
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Fakultas Teknik Universitas Lambung Mangkurat, Jl. Ahmad Yani Km. 35 Banjarbaru Kalimantan Selatan Telp. (0511)-4773868 Fax. (0511)-4773868
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INDONESIA
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
 11   12   13   14   15 
Hubungan Teoritis Antara Berat Isi Kering dan Kadar Air untuk Menentukan Kepadatan Relatif Syafruddin Syafruddin
INFO-TEKNIK Vol 8, No 2 (2007): INFOTEKNIK VOL. 8 NO. 2 2007
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v8i2.1735

Abstract

Soil stabilization can be done with a few way, by increasing soil density or compaction. Compactable soil can increase soil strength and bearing capacity to working payload.Laterite soils as embankment soil that stabilized with compacting method, influenced by water content, dry unit weight and compacting dissociation energy. To know theoretical connection between water contents,  dry unit weight, degree of saturation  and energy of compaction is done in laboratory with method Standard Proctor and Modified Proctor to know optimum water content zone at some Sr and determines minimum energy that needed to gets relative density of 90% ( RC 90%) so that economic compacting can be reached.From result of this research, it is gotten that optimum water content resided at Sr 75% and there is no compacting curve cuts Sr 100% ( ZAV).By using theoretical connection between dry unit weight , water content, Sr and compacting energy, it can determine the water content zone and minimum energy that needed to reachs relative density of 90% ( RC 90%).
ANALISA DAYA DUKUNG PONDASI KACAPURI DI ATAS TANAH GAMBUT YANG DISTABILISASI Muhammad Afief Ma’ruf; Wiku Adhiwicaksana Krasna; J.C. Heldiansyah
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.v14i2.300

Abstract

The traditional society of south borneo has a traditional form of building foundation that has been used for a very long time for their traditional house. This is called Kacapuri foundation that use a combination of Ulin wood and Galam wood. But right now because the lack of Ulin wood, this form is  not familiar anymore in south borneo.The rising in number of people forced the use of peat soil in borneo to be used as an alternative for their settlement. But the natural form of peat soil itself has become a challenge to the construction, therefore needs to be reinforced, one of the method is stabilisation. The optimum composition of lime and rice husk ash used for stabilization is 15% from the peat soil wet unit weight for the peat that got influence by surrounding water.Because of the few things above, the research in kacapuri foundation above the stabilized peat soil is established. From the test conclude that the value of GS rise to 1,584, water content lowered to 221,393 % and the unit weight is rise 1,158 t/m3. Pore value lowered to 3,386 and pH rise to 5,2.From the consolidation test the total settlements and vertical strain is concluded. The total settlements is lowered to 0,18 mm. The shear strength parameter is rise with the cohesion 0,1 and internal friction 30,646o. The ultimate bearing capacity qu for kacapuri foundation above the stabilized peat soil according to terzaghi formula is 87,675 t/m2.
ANALISIS KOEFISIEN KERUGIAN PADA PERCABANGAN PIPA Rachmat Subagyo
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.v10i1.1761

Abstract

As long as the liquid flows through the piping installation system, many losses of pressure called major loss of pressure and minor loss of pressure (a loss due to the fluid passes a branch). The distribution of liquid flow in the branch is an irreversible process in which this irreversibility will degrade the performance system. The way to discover the loss occurs at the pipe branching is by measuring the coefficient of loss. The type of experiment conducted was by making three branches of galvanic pipes of medium size with the angles 450, 600 and 900 with the variation of Re from 0 to 5,5 x 104.The result of branch K32 study is K32(45) =K32(60)=K32(90)= (0,07-0,39), branch K31: K31(45)= (0,95-0,60), K31(60)=(1,08-0,85) and K31(90)=(1,01-1,50). The total coefficient of loss is Ktot(45)= (1,02-0,97), Ktot(60)=(1,15-1,23) and Ktot(90)=(1,17-1,89).
Air Segar Untuk Penduduk di Daerah Rawa Dengan Metode Menara Berlipat Robertus Chandrawijaja
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.v2i1.444

Abstract

Kalimantan selatan memiliki luas daerah rawa kurang lebih 700.000 ha, baik yang dipengaruhi oleh pasang surut maupun tidak. Sebagaimana dikatakan diatas bahwa jumlah penduduk semakin bertambah maka tentu saja kebutuhan akan pangan juga semakin meningkat. Karena lahan-lahan kering sudah makin terbatas maka lahan-lahan basah atau rawa menjadi semakin penting.Persoalan penting dari perkembangan lahan pertanian ke daerah rawa adalah bahwa para petani  penggarap tentu saja membutuhkan air bersih untuk diminum. Padahal lain pihak kualitas air didaerah rawa  mengandung pH yang tinggi dengan, yaitu 3-4  dan derajat keasaman ini lebih tinggi pada musim kemarau dan pada waktu air surut dibandingkan musim penghujan dan pada waktu pasang. Kandungan besi (Fe) bervariasi antara 1 – 36,375 mg/L, alumunium (Al) bervariasi 6 – 86 ppm, Mn berkisar antara 0,915 – 2,188 ppm dan kandungan sulfat yang tinggi terutama di musim kemarau. Hal ini disebabkan oleh adanya oksidasi pyrit yang terdapat pada lapisan tanah (sulfat masam).Plastik gelombang merupakan bahan yang relatif murah dan banyak dijumpai di pasaran. Bahan ini dapat dirancang menjadi suatu konstruksi aerator yang dapat diperguankan untuk keperluan pembuangan atau pengurangan kandungan besi dari dalam air.Proses pembuangan besi dengan konstruksi menara berlipat sebagai akibat adanya oksigen yang terserap ke dalam air selama mengalir melewati permukaan plastik gelombang. Selanjutnya oksigen akan mengoksidasi unsur besi terlarut menjadi unsur besi tak terlarut yang dapat mengendap sehingga mudah dipisahkan dari dalam air.Studi ini dilakukan dengan mengambil air rawa yang menunjukkan kandungan besi (Fe) berkisar antara 3,208-5,820 mg/l dan kandungan manganese (Mn) berkisar antara 0,330-0,347 mg/l. setelah melewati konstruksi menara berlipat diperoleh hasil sebagai berikut : kandungan besi (Fe) berkisar antara 2,551 – 1,009 mg/L dan kandugnan Manganese (Mn) berksiar antara 0,27 – 0,02 mg/L. hasil studi dengan metode menara berlipat (dengan enam lipatan) ini dapat mereduksi kandungan besi dari dalam air dengan efisiensi yang bervariasi antara 61,91%-80,94 % sedangkan peningkatan efisiensi antara 0,43 % sampai 11,74% untuk setiap penambahan plat.
WATER BALANCE IN SUMBER MULYA VILLAGE, MERAUKE REGENCY Eprosina Jarmida Soumokil; Ulfa Fitriati
INFO-TEKNIK Vol 12, No 1 (2011): INFOTEKNIK VOL. 12 NO. 1 2011
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v12i1.1778

Abstract

Sumber Mulya village is part of Rawa Indah Lowland development area that consists of Kaliki - Sumber Mulya - Jaya Makmur unit. Agricultural area in Sumber Mulya Village is currently processed with relatively small production results due to traditional method of cultivation and water shortage problem.Inflow to Rawa Keramati is larger than the existing irrigation water demand. However, it has only small capacity in utilizing inflow that results in a lot of wasted water during the rainy season. By using Standard Operating Rule model, the most optimum capability of the swamp to fulfil irigation water demand under various canges of cultivation pattern and schedule can be identified.  Optimum result is determined using an approach on Analytical Hierarchy Process (AHP) model.Swamp operation analysis was carried out to the four cultivation schedule alternatives with 100% swamp realase capacity. Based on Analytical Hierarchy Process (AHP) method used for the four cultivation patterns and schedules alternatives reviewed based on adequacy, effectiveness and efficiency factor, the optimum results was obtained at alternative in November. It showed Rawa Keramati water resource capability in supplying Sumber Mulya village water demand with irrigated areas of ±595 Ha, ±594 Ha, and ±593 Ha for the first­crop, second-crop, and third-crop season, respectively.
Studi Kandungan Logam Berat Pb Di Saluran Kenjeran Dan Kerang Di Muara Saluran Rijali Noor
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.v4i1.474

Abstract

Kenjeran river is one of the rivers with have estuary to the kenjeran beach which have length a bout 4 km. this river was estimate that has  contaminate by high heavy metal like (Pb). It’s  can effected the contents of heavy metal in the estuary cockle. The research goals is to analysis is there any differentiate the content of heavy metal in the river, analysis the content of heavy metal in the cockle, the water’s quality and the sediment. From the research result showed there is differentiate between the content of heavy metal in the upper course to the estuary. In the upper course, the cockle and the sediment are contaminate by Pb. There are positive interaction between the contents  of Pb in the estuary. The relationship between the content of heavy metal (Pb) in the cockle, the water quality, the sediment and time in the estuary implied as the equation  :Y=1,72-0.24X1+0,0206X2 – 1,23 D1 – 0.289D2.  The goal of management strategy is to increase the environmental quality and to control the pollution with applying the planning concept, management program and monitoring.
PENENTUAN ELEVASI DASAR LAH AN PERTANIAN BERDASARKAN PADA KISARAN PASANG SURUT AIR LAUT PADA LOKASI UNIT KECAMATAN BARAMBAI Holdani Kurdi
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.v13i1.1812

Abstract

Produksi pangan di Propinsi Kalimantan Selatan yang merupakan salah satu lumbung padi nasional berasal dari persawahan pasang surut yang terletak disepanjangkanan/kiri sungai Barito bagian hilir. Berbagai masalah sering muncul menjadi kendala bagi budidaya pertanian dipersawahan pasang surut,antara lain masalah keasaman, salinitas dan kurangnya ketinggian muka air untuk mencapai lahan pertanian, sering disebabkan oleh sistem tata air yang kurang tepat, semua permasalahan diatas muncul sebagai akibat dari tidak tepatnya dalam menentukan elevasi dasar lahan pertanian, penentuan elevasi dasar lahan pertanian adalah merupakan faktor utama dari semua perencanaan terhadap lahanpertanian. Dalam penentuanelevasi dasar pertanian dilahan pasang surut banyak dipengaruhi oleh kisaran pasang surut air laut.Penelitian yang dilakukan mempunyai tujuan untuk mengetahui bagaimana  penentuan elevasi dasar lahan pertanian berdasarkan pada kisaran pasang surut air laut. Berapa besar kisaran pasang surut pasang surut air laut yang tepat untuk lahan pertanian yang akhirnya dapat merencanakan system tata air yang tepat.Hasil dari  penelitian menunjukkan bahwa nilai Formzaki untuk Barambai adalah 3,062 hal ini menunjukkanbahwa daerah Barambai adalah pasang surut harian tunggal/diurnal tide termasuk type luapan C. Berdasarkan dari kisaran pasang surut tersebut akan memudahkan dalam penentuan elevasi lahan pertanian dalam mengatur siste muka air. Diharapkan dari penelitian ini adalah sebagai sebagai sumbangan  pemikiran secara ilmiah bagi pemerintah daerah Kabupaten Batola dalam peningkatan produktivitas pangan pada daerah lahan rawa dengan menentukan elevasi dasar lahan pertanian sebagai salah satu system pengelolaan tata air yang tepat.
Perencanaan Fondasi MAT pada Gedung-Gedung Tinggi Steffie Tumilar
INFO-TEKNIK 2015: Prosiding Semnas Teknik Sipil 2015
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v0i0.3035

Abstract

Pada masa sekarang telah kita saksikan hadirnya berbagai gedung-gedung pencakar langit dengan besmen-besmen yang dalam yang sudah dan sedang dibangun dengan berbagai macam jenis fondasi, seperti fondasi rakit (raft/compensated foundation), fondasi dalam dengan tiang-tiang pancang dan tiang-tiang bor, serta kombinasi raft dan tiang (pile-raft foundation).
PEMANFAATAN BATUBARA SEBAGAI BAHAN BAKAR ALTERNATIF UNTUK PENGERINGAN KARET REMAH PADA INDUSTRI KARET Agus Mirwan; Doni Rahmat Wicakso
INFO-TEKNIK Vol 5, No 2 (2004): INFOTEKNIK VOL. 5 NO. 2 2004
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v5i2.1661

Abstract

The scarcity of diesel fuel in the future especially for drying rubber is based on some statements which said that the use of fuel in Indonesiawill increase along with the decrease oil reserve and also with the decrease subsidy. Early efforts have been made to obtain an alternative fuel to substitute diesel fuel as an anticipation step to face the problems that will be a barrier to the continuity of rubber production. Rubber is one of the main commodities from the agricultural sector in Indonesia. According to the thought above, a research has been done to use raw coal as an alternative fuel for drying crumb rubber. This research was done in the crumb rubber factory in Kalimantan. The burner used is Cycloburner made by Water Wide Guthrie, Malaysia-New Zealand. Drying temperature for SIR 10 is 115-120oC. Raw coal used is Adaro-Kalimantan type.The result shows that the gas from the combustion of the raw coal does not affect the rubber quality. The rubber fulfills the requirements as SIR 10 with dirt content 0.03 - 0.049%, ash content 0.37 - 0.48%, volatile matter 0.34 - 0.38%, Po 39 - 48.5 and PRI 70.5 - 76.7.
Tinjauan Kapasitas Dukung Teoritis Fondasi Kacapuri Iskandar Iskandar
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.v1i1.399

Abstract

This article will discuss the Kacapuri Foundation and its bearing capacity. Kacapuri foundation is a specific kind of system, commonly and tradisionally used by the Banjarese, from generation to generation in wood structure building like house, school, etc, on soft soil area. The price of this foundation is low, becouse ot uses galam timber, witch is a very cheap. Galam is a plant, which grows in the swamp area in tropical forest.

Page 13 of 43 | Total Record : 425

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