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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Core Subject : Engineering,
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Articles 3,145 Documents
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Analisa Kelayakan Finansial Proyek Pembangunan Apartemen The Peak Pekanbaru Mathofani, Anna; Taufik, Hendra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Pekanbaru as the capital of Riau province which has strategic location, its making thegovernment has a vision to make pekanbaru city as the third metropolitan city in theisland of Sumatra. One of the keys of success in achieving Pekanbaru's vision is thegrowing of properties development. The Peak apartment building project that presents aconcept that combines apartments and hotels and built for the housing needs of thecommunity that is safe, comfortable and strategic located. The construction investment inthis project needs a high cost, so it needs feasibility analysis of financial. Indicators ofinvestment feasibility using method BCR (Benefit Cost Ratio), NPV (Net Present Value),IRR (Internal Rate of Return), BEP (Break Even Point) and Sensitivity Analysis. Theresults of investment calculation in this research is Rp. 153.455.919.352,57, by using aninterest rate of 13.25% is obtained value of BCR = 1.35, NPV = Rp. 70.430.609.438,07,IRR = 28,90%, the value of BEP = 5 years and 4 months (age = 20 years of the projectplan) and the value of the investment sensitivity analysis increased by 140%, thesensitivity of benefit decreased by 61%, sensitivity of cost increased by 246% and interestrate sensitivity increased by 28,90%, with the results of the investment feasibility analysisfrom described above, so all the parameters indicate the scope for appropriateinvestment.Keywords: Feasibility Analysis of Financial, Investment , Pekanbaru , The PeakApartment, Sensitivity Analysis,
Identifikasi Wilayah Rawan Banjir Genangan Menggunakan Teknologi Sistem Imformasi Geografis (SIG) (Studi Kasus : Kota Pekanbaru) Wikrine Teriyoko; Mudjiatko Mudjiatko; Sigit Sutikno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Stages of disaster mitigation study consists of the level of hazard, vulnerability and capacity. Pekanbaru, the capital of Riau province has the potential to flood inundation. An assessment of the vulnerability of flood inundation using GIS technology be done in twelve districts in the city of Pekanbaru. This study was conducted as a early warning to the public and to the relevant parties. This study uses two parameters causes of flood inundation, such as the parameter of flooding inundation (landform, slope either side of the river, damming the river branching, meandering rivers, and waterworks) and parameters of flood inundation potential water supply (rainfall, river basin shape, drainage density, slope watersheds, and land use). By analyzing satellite imagery data (DEM and Landsat 8 OLI), rainfall data, and administrative map of Pekanbaru City area with the help of GIS technology, the results of the analysis of these two parameters indicate that the city of Pekanbaru has a weighted average score is 2.70, so that the city of Pekanbaru has a severe impact categories rather prone to flooding inundation. The weighted scores of the two parameters in the city of Pekanbaru has shown that the land (weighted score of 1.33), the availability of water building (weighted score of 2.25), and the use of land (weighted score of 1.20) has a considerable influence on the cause of the flood puddles in the city of PekanbaruKeywords: inundation flood, GIS, parameters of flood, vulnerability
Analisa Prediksi Aliran Sungai Indragiri Menggunakan Model GR3J (Genie Rural a 3 Parametres Journalie) Mifta Khairiah; Manyuk Fauzi; Imam Suprayogi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Development of water resources in the Indonesian Provinces of Riau in particular require a simplification in the form of a model is needed to transform rain into rate of flow.This study examines the rainfall-runoff modeling methods GR3J on Indragiri watershed. In this modeling input data including the data used daily rainfall and potential evapotranspiration data is that the results are calibrat edusing discharge data daily observations. In this modeling sought optimum value of the parameter modeling GR3J which produces deviation or the smallest error. There are two stages in this model, namely: Model calibration and verification flow model based on the data recording station Lubuk Ambacang guess water for 10 years( 1995-2004). To calculate the deviation thatoccursis used method of Nash-Sutcliffe Coefficient. This modeling to optimize four free parameters such as Maximum Capacity Production Store(XI), Coefficient Changes in Groundwater (X2) and the unit hydrograph (X3). The results of this study concluded that the model can represent from DAS GR3J Indragiriby obtaining the value of the text sarevery good at this stage ofthe model calibration and verification phase. Pasacalibration phase texts most excellent value that thes cheme 9 at 36.89. And at theverification stage nash value and the value ofthe greatest correlation coefficientis also shown in the schematic 9 of 0.77% and acorrelation coefficientof 0.61%..Key Word : Indragiri, Rain-Flow, model GR3J.
Model fisik Kincir Air Untuk Irigasi Pertanian Vicky, M Taufiq; Rinaldi, Rinaldi; Hendri, Andy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Abstract

Physical model research of water wheel for agricultural irrigation is executed at Hidrotechnic’s Laboratory University of Riau. Model that is utilized doesn't utilize model scale, but phenomenon of prototype will be represented by model that made. Water wheel bases executed field study previous, having alone uniqueness. Paddle wheel lap speed one every minute (RPM) and debit who can be lifted by waters jacking tube visual's are relative stable. Even so was known it must be water wheel condition be still get improved debit that can be lifted by waters jacking tube. Water wheel model is undershoot water wheel made bases prototype aught at the site or at agricultural location. This waterwheel is made at Technicals Engineering Material Laboratory. This Waterwheel model specification with diameter 55 cm, broad 6 cm, long fan 6 cm, total fan 18 numbers and heavy 1,764 kg. The research did by variated foots up and tube dimension so gotten by water wheel model with tubed optimal one. Variation of tube is 3, 6, 9 and 18 numbers with each volume saves 3,4 ml, 8,0 ml, and 16,8 ml whereas debit flows are not variated.Result of this experiment showing that Waterwheel speed regarde by flow speed that punches waterwheel fans, but relationship both is not linear. Total tube and tube volume regard paddle wheel lap. Diameter 0,8 cm tube can’t lift waters because the diameter of tube are too small but diameter 1,3 cm and 1,7 cm tube both can lift flows.Maximum debits which diameter 1,3 tube can be lifted by jacking tube is 6,39 ml/dt, it happens upon tube amount 18 numbers whereas on diameter tube 1,7 cm maximum debits is 5,38 ml / dt happens upon tubed amount 6 numbers.Keywords: Model, Waterwheel, Undershot
Pengaruh Salinitas KCl & NaCl Terhadap Kestabilan Emulsi Minyak Mentah–Air Di Lapangan Bekasap, PT. Chevron Pacific Indonesia Dhanang Hayuningwang; Ahmad Fadli; Fajril Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Abstract

In the oil well drilling and service process, NaCl and KCl used to provide hydrostatic pressure into the bowels of the earth. Brine solution unintentionally produced to the surface facility when oil lifting process perform and induce thickness of oil-water emulsion at separation tank. The objective of this study was to determine the effect of NaCl and KCl on the oil-water demulsification process at Bekasap field area, PT CPI Duri. This study was conducted by varying salinity of NaCl and KCl by 10%, 20%, 30% and 40% in 100ml oil-water emulsion sample with oil and water ratio 1:1. Demulsification of emulsion sample using precipitation method for 240 minutes, at temperature 60oC and recording increasing the number of free water every 20 minutes. The data obtained from study showed in the graphs indicate that emulsion separation speed tends to be slower due to increase of salt salinity. From the final result after 240 minutes of precipitation shown that emulsion separation process which influenced by NaCl salt is more difficult than the effect of KCl salt.Key words: Brine, Emulsion, Oil, Water,
Analisis Pengaruh Perubahan Penggunaan Lahan Terhadap Debit Banjir Di Sub DAS Kampar Kiri Firdaus, Firdaus; Sujatmoko, Bambang; Sutikno, Sigit
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Land use change in the watershed is a factor contributing to the flooding because it affects the ability of the soil to absorb water infiltration. This phenomenon is studied in Kampar Kiri sub- watershed that is located in watershed outlet of Lipat Kain water level recorder. This study aims to analyze the effect of land use change on the flood discharge in Kampar Kiri sub watershed. The calculation of flood discharge uses HEC-HMS. Input data modelsare daily rainfall data, land use maps of 2005 and 2011 and soil type maps. The results showed that there were significant changes in land use on open land and dry land farming mixed bush at -87,648% and -70,035%. Land conversion also occurs in dry forest primary, secondary dry forest, scrub, plantations, secondary swamp forest, mixed gardens, vegetation regularly, as well as plantations. While dryland farming settlements and an increase of 153,894% and 94,114%. This condition increases the value of Curve Number (CN) composite average in 2005 and 2011 amounted to 80,462 and 83,722 and the value imperviouss composite average of 2.884% and 3.507%. Peak flood discharge for 25 and 50 year return periode in 2005 that were obtained from the HEC-HMS modeling are 924,4 m3/sand 1096,4 m3/s respectively, and in 2011 are 932,8 m3/s and 1105 m3/s . Increasing of flood discharge because of lande use change for 25 year return periode are 8,4 m3/s (0,909%) andfor 50 year return periode are 8,6 m3/s (0,784%). Correction difference discharge (DE) between HEC-HMS modeling measurement data with 25 and 50 year return periode in 2005 are 1,153% and 5,468%, whereas in 2011 are 2,072% and 6,296% respectively.Keywords: land use, peak discharge, HEC-HMS, correction difference discharge
Analisa Besarnya Kontribusi Biaya Tak Langsung Terhadap Harga Jual Rumah Pada Perumahan Jenis Cluster Tipe 45 Di Kota Pekanbaru (Studi Kasus : Perumahan Mini Cluster Nirwana Cipta) Iriana, Rian Trikomara
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Abstract

The growth of property business in Pekanbaru creates a good economic growth. In 2011, this sector gives 27,72% income and improve the house demand indirectly. People ask for a good, healthy, safe, and well organized housing for midle people. Mini cluster is one of the choice for the housing, since this type of house combine a simple house with cluster concept, fully equipped with infrastructure facility and a full utility. There are two main fund in building a housing; direct and indirect costs. Direct costs is costs that we need for buiding the physic of the house, while the other costs is costs that we need for facility costs, legal permission costs, planning and economic costs. Indirect costs will be paid by buyers. So, the price paid by the buyers include facility building, legal permission, planning, and economic costs. In this research, writer has identified that the contribution of indirect costs give a big impact in house price and the profit. In percentage, the contribution of indirect costs is bigger than the profit. We can see that from 45/112 type house has 65, 75% for direct costs, 19% indirect costs, and 15, 25% for the profit. While for 45/143 type house, the percentage is 64, 13% for direct costs, 20, 19% for indirect costs, and 15, 68% for the profit. Facilities offered in mini cluster Nirwana Cipta housing are neighborhood street, closed drainage, small park in every unit, street lamp, and gate (one gate system).Key words : direct costs, indirect costs, selling price house, mini cluster.
Analisis Lokasi Dan Jumlah Stasiun Pemadan Kebakaran Kota Pekanbaru Jasriadi Jasriadi; Rian Trikomara Iriana; Sri Djuniati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Fire Company is an active protektif system in building structure. Pekanbaru is an area which is gristle to fire danger. Population of Pekanbaru City pertained is multitude, this affect to movement systems and development expanding everywhere. Location of effective post is an effort to minimize fire impact which possibly will happened. The research methodology consists of three phases: data collection, network analisys using network analyst extention, and discussion. Analyse optimation of station which have in Pekanbaru City conducted by using principle of service area to the stations which have been placed in one location. Service area in this study is defined as the minimum area that can be reached by fire station on the fire occur. Service area is generated using the network analisys extention in ArcGIS software. The results of this study indicate that stations still are not able to cover all of Pekanbaru areas. Station allocated by government in this time not enough served all region of Pekanbaru when at any times fire occur. On scenario 1-4 (existing station scenario with assumption speed of extinguisher car is 50-65 km/hour), stations cannot include all region of Pekanbaru. It means that Pekanbaru city still requires the addition of a new station building allocated to the areas not yet covered service area that is counted 5 (five) new stations.Keywords: optymal location, network analyst, service area , fire station
Kajian Ketersediaan Dan Kebutuhan Air Baku Dengan Pemodelan Ihacres Di Daerah Aliran Sungai Tapung Kiri Mashuri Mashuri; Manyuk Fauzi; Ari Sandhyavitri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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The demand of raw water in Kampar Districts is increasing in step with population growth. At this time, the water supply system is regulated by PDAM Tirta Kampar what still have problem to service coverage. Especially Tapung Sub-District has not been served. Therefore, the existence of the Tapung Kiri River is expected to be a solution to overcome these problems. Thisstudy use IHACRES for rainfall - runoff modeling, which in the calibration stage reach Nash- Sutcliffe effectiveness value of 0.630. Overall, this model provides an understanding that thesuccess obtained on the calibration stage does not guarantee success in the verification stage. Analysis of water availability is done to analyze the realable discharge river (Q90%) based onaverage annual the discharge resulting realable discharge occurred in 2000. The greatest realable discharge occured in October amounted to 93.75 m3/sec, and the smallest in Maretamounted to 43,69 m3/sec. Analysis of water demand is forecasted to the population growth of up to 22 years and produce raw water demand total with forecasts early of the year (2013) of 0.109 m3/sec and the end forecasts of the year (2035) of 0.264 m3/sec.Keyword : Tapung Kiri River, IHACRES model, Availability Water, Population Forecasts, Water Supply
Pembuatan Bioetanol Dari Fermentasi Nira Aren (Arenga Pinnata) Menggunakan Yeast Saccharomyces Cerevisiae Dengan Pengaruh Variasi Konsentrasi Nutrisi Dan Waktu Fermentasi Akhir, Yaumil Mutia; Chairul, Chairul; Drastinawati, Drastinawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Bioetanol is one of the environmental friendly biofuel and produced by fermentating it with organic primary resource. Biofuel comes from organic resources called non-fossil energy. One of the most potential feed stock which used as primary resource of making bioetanol is arenga plant. Arenga plant is one of the plant that has sugar content. Microorganism that used for processing the arenga plant into bioetanol was Saccharomyces cerevisiae. The step of this research consist of materials and inoculum preparation, fermentation and also analysis. This research was observed the effect of variation in nutrient concentration and fermentation time. Nutrition used in this research were (NH2)2CO (urea) dan NH4H2PO4 (NPK) where urea was varied into 0,3;0,4;0,5; dan 0,6 g/l whereas NPK was varied into 0,4;0,5;0,6; and 0,7 g/l. Fermentation result were taken after 24, 48, 72 and 96 hours. Optimum urea addition result 0,5 g/l and 0,6 g/l for NPK on 72 hours of fermentation that resulting bioetanol concentration 7% (v/v).Keyword : Arenga plant, bioetanol, fermentation, Saccharomyces cerevisiae.

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