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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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Kuat Tekan Paving Block Geopolimer Abu Sawit (Palm Oil Fuel Ash) Dengan Perawatan Suhu Ruang Syarif, Harriad Akbar; Olivia, Monita; Saputra, Edy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Geopolymer is an environmentally friendly alternative construction material made from the process of activating the base material rich in silicon (Si) and aluminum (Al) with a solutionof alkaline activators. In this study, using the ashes of oil derived from Dumai, Riau Province as the base material of geopolymer. With the eco-friendly construction material that theproduct is made with reference to a standard paving blocks. This study is based on variations of modulus activator, dosage activators, and the addition of cement type 1 (OrdinaryPortland Cement) for the treatment of room temperature (setting time) on the composition of the mixture. This study aims to determine the amount of use of the base material (palm oil fuelash) from the comparison alkaline activator with palm oil fuel ash used in paving block geopolymer based treatment time and its influence on the physical properties of the geopolymer paving block. The results showed that the strong increase in modulus of paving blocks are influenced by activators in combination with the addition of cement to each composition.Keywords: palm oil fuel ash, geopolymer, paving block, modulus activator, dosage activator
Evaluasi Kinerja DAS Dan Simulasi Konservasi Menggunakan Swat (Soil And Water Assessment Tool) Studi Kasus : Sub DAS Tapung, Siak, Provinsi Riau) Mardan Fajri; Manyuk Fauzi; Ari Sandhyavitri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Alteration of land use which is happening at Tapung watershed (DAS Tapung) is worrying. Marked by the decreasing of forest area from 15.624,36 ha at 2002 to 12.186,32 ha at 2012. Evaluation of watershed condition and performance is needed. Evaluation using (i) Percentage of critical land (PLK) (ii) Percentage of vegetation cover (PPV) (iii) Coefficient regim of flow(KRA) (iv) Coannual of flow (KAT) efficient criteria. Evaluation result of PLK is 9,82%, PPV 71,6%, KRA 14,28 and KAT 0,45. After receiving existing evaluation value, conservation simulation using SWAT program is done by changing a part of open land area and shrub on land use map of 2012 with forest. From simulation result, SWAT model validity parameter R2 is 0,50 and NSE 0,50. These result have satisfied the research objectives as the finding coefficient were > R2 0,4 and >NSE 0,35 From this simulation, watershed condition is evaluated again. Evaluation result after doing conservation simulation are PLK 6,47, PPV 71,6, KRA 5,78, and KAT 0,44. Values after conservation simulation gives better result than the condition before conservation simulation is done.Keywords: altration of land use, SWAT, watershed performance.
Pengaruh Penambahan Serat Kulit Bambu Terhadap Sifat Mekanik Beton M Edwar Hidayat; Ismeddiyanto Ismeddiyanto; Alex Kurniawandy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Concrete has significant deficiencies, which have a low tensile strength. The addition of fiber is one alternative to overcome these deficiecies. Bamboo fiber is a natural fiber that is readily available and relatively fast growth. Fiber which mixing with concrete only take the smooth skin. This research studies the mechanical properties of bamboo fiber concrete consist of compressive strength, splitting tensile strength, flexural strength. Addition of fiber is one of alternation for enhance the strength of concrete. The specimens consists of cylindrical specimens with a diameter of 150 mm and a height of 300 mm and a beam with a length of 600 mm, width 150 mm, and a height of 150 mm. The lenght of fiber that used is 2,5 cm with variation of fiber mass 0,2%, 0,4%, 0,6%, 0,8% 1 % of aggregate fraction.The concrete without fiber is make for comparation. Methods of mixing fibers into the concrete mix in a random way after the concrete is mixed evenly. The result of research showed the compressive strenght, splitng tensile strenght and flexural strength maximum in fiber variation 0,6%. According to the result of research, additional bamboo skin fiber into concrete mixture can improve the mechanical properties of concrete and at optimal fiber variation can on 0.6%.Keywords : fiber concrete, bamboo skin, compressive strenght, splitting tensile strength, flexural strength
Analisa Drainase Untuk Penanggulangan Banjir Menggunakan EPS SWMM (Studi Kasus : Perumahan Mutiara Witayu Kecamatan Rumbai Pekanbaru) M Rizal Zarkani; Bambang Sujatmoko; Rinaldi Rinaldi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Flood is one of the negative effects that are often encountered during the rainy season. In addition to rain, flooding is also caused by tidal wave and poor management of drainage. Housing area of Mutiara Witayu located at Gotong Royong street Sri Meranti Village District of Rumbai Pekanbaru is an area that is prone to flooding so it is necessary to work on a solution that can cope with flooding. This study aimed to evaluate the capacity of drainage and determine the alternatives to address the problem of flooding. EPA SWMM application version 5.0 is used to evaluate the problems. The results showed that the application of EPA SWMM 5.0 quite reliable to evaluate the channel capacity in order to cope with the flooding. There are 4 simulations which were performed in this study. The simulation results of changing the slope of the channel is able to cope with the flood by 82,635%, simulation by changing the channel dimensions of 0,80,8 m, 1,01,0 m, and 1,01,2 m respectively can to cope with the flood by 89,295 %, 92,915% and 94,797%, while simulation by changing the dimension and slope can to cope with the flood by 100%. Simulations by operating the pump with 6 m3/s discharge is able to dispose the water that goes into the storage pool when the door is operated.Keywords: Flood, Drainage, EPA SWMM 5.0
Penyusunan Peta Indeks Resiko Banjir Dengan Teknologi Sistem Imformasi Geografis (SIG) Kecamatan Senapelan, Sukajadi Dan Lima Puluh Yudha Andestian; Bambang Sujatmoko; Rinaldi Rinaldi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Flood is a disaster that can cause a lot of disadvantage to society, from materials or people`s life. Based on the survey from Royal Haskoning Team (2011), Senapelan district had 3 (three) spots of puddles. Sukajadi with 7 (seven) spots and Limapuluh district with 4 (four) puddles. The issue was came from the existed drainage system was still depends and relying on the natural channel, like brooks, swamps, and the others. Nevertheless, the brooks or swamps which flows to Siak River isn`t always good and that can potentially let some puddles and flood in several spots happens.The preparation of flood risk index map was based on insecurity index, vulnerability index and capacity index. The insecurity index parameter was based on the high , the duration and the frequency of the puddles. The vulnerability index parameter was based on the number of peoples, the dense of buildings, the male ratio and the ratio for under 15 (fifteen) peoples. The capacity index parameter was based on the existed flood pump condition, water tunnel, levee and drainage. Those parameters were analyzed by using Geographic Information System Technology (GIS)Based on the flood risk map for those three districts had 2 (two) sub-districts with index III, 6 (six) sub-districts with index II, and 9 (nine) sub-districts with index I. Based on the insecurity index, they were 3 (three) sub-districts with index IV, 4 (four) sub-districts with index III, 1 (one) sub-district with index II, and 9 (nine) sub-districts with index I. Based on the vulnerability index, they were 6 (six) sub-districts with index IV, 9 (nine) sub-districts with index III, 2 (two) sub-districts with index II. Based on the capacity index, they were 3 (three) sub-districts with index V, 14 (fourteen) sub-districts with index IVKeywords : SIG, flood risk map , insecurity, vulnerability, capacity.
Analisis Respons Dinamik Jembatan Rangka Baja Menggunakan Sistem Seismic Isolation Lead Rubber Bearing (LRB) Ari Vera Indra; Reni Suryanita; Ismeddiyanto Ismeddiyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Seismic isolation is system to dampen seismic energy that works on the bridge by add an object called base isolators. The purpose of this study is show the dynamic response of steel truss bridge with stiffness variation LRB (Lead Rubber Bearing) as base isolators and seismic loads. Modeling the structure of the steel truss bridge consists of three spans and two poles. The steel truss bridge model given in the form of data akselerogram seismic load time history. The data is akselerogram Padang Earthquake Malaysia station with variations PGA (Peak Ground Acceleration) of 0.2 g, 0.4 g, 0.6 g and 0.8 g. LRB rigidity is increase to 50%, 100%, 150%, 200%, and 250% of the initial stiffness parameters LRB. The analysis is conduct use dynamic time history analysis. Stiffness value of LRB (Lead Rubber Bearing) base FEMA P-751-2012 and AASHTO Guide Specification for Seismic Isolation Design. Analysis showed The dynamic response displacement and decreased to increase stiffness of LRB but dynamic response acceleration increases.Keywords: Seismic isolation, base isolator, steel truss bridge,, PGA, Peak Ground Acceleration, LRB (Lead Rubber Bearing), dynamic time history analysis,, dynamic response.
Evaluasi Potensi Jaringan Saraf Tiruan Dalam Memprediksi Respons Struktur Gedung Bertingkat Berdasarkan Spektra Gempa Di Wilayah Indonesia Vindy Salim; Reni Suryanita; Iskandar Romey Sitompul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Design of quake resistance building is very important in Indonesia, where most of Indonesia’s region located in quake zone with low to high intensity. Analysis of structure response can be done by using the help of finite element software, but needs time and iscomplicated when designing takes place. One of the solution in analyzing structure response faster and easy to operate is with using Artificial Neural Network (ANN). Deciding transferfunction in ANN analysis is important as it can ease our ANN analysis based on displacement, velocity, and acceleration as input data. This research is intended to evaluate structureresponse based on variation of quake load based on location of Indonesia’ capital of province, which are 34 provinces. With the help of finite element software analysis, total dataobtained for JST is 1836 data. In this research, the composition used for training, testing, and validation for whole data is 60%, 20%, and 20% respectively. Input parameters arequake data, soil type, and elevation, meanwhile for output is structure response for each direction. Testing result showed that the accuracy of ANN in predicting structure responsereach 99%. Evaluation result of ANN analysis showed that transfer function of Tan-Sigmoid and Purelin gives good prediction with Tan-Sigmoid as the best one with 99% accuracy.ANN analysis result showed that irregular buildings have 99% accuracy for training and testing, meanwhile regular buildings has about 90% for training and testing. This showedthat ANN with function transfer Tan-Sigmoid can be used for predicting structure response fast and accurately, as well can be used as reference for designer in designing quake resistance building.Key Words: Artificial Neural Network, structure response value, finite element software, response spectrum, Tan-Sigmoid
Kajian Posisi Shear Wall Pada Gedung Tidak Beraturan Dengan Analisis Riwayat Waktu Beban Gempa Heru Nurcahyo; Reni Suryanita; Alex Kurniawandy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Irregularity of building structure often emerges due to the room configurations to meet the architectural requirements. In irregular building, eccentricity exists between its center of mass and its center of rotation. The eccentricity generates torsion, which usually leads to the placement of rigid structural elements to increase the rotational stiffness of the building structure. One of the options to increase the building structure stiffness is by placing shear walls in the building. This research aims to analyze the impact of structure irregularity to the eccentricity of building structure and the effectiveness of various shear wall configurations to resist earthquake load. Building to be analyzed is Aulia Hospital buildings with earthquake load time history. Modeling is done with the help of the finite element program. The model will be made to the building without shear wall, existing and modification. The modified model is a model with a different positioning of the existing shear wall based parameter eccentricity. The analysis produced fundamental period and maximum displacement of the building as output. The fundamental period was calculated equal to 3.102 second for the building without shear wall; 2.087 second for the existing building; 2.011 second for Modification 1 Building; and 1.756 second for Modification 2 Building. The maximum displacement in X direction was calculated equal to 246.01 mm for the building without shear wall; 114.1 mm for the existing building; 107.24 mm for Modification 1 Building; and 102.07 mm for Modification 2 Building. Whereas the maximum displacement in Y direction was calculated equal to 230.37 mm for the building without shear wall; 169.7 mm for the existing building; 156.5 mm for Modification 1 Building; and 97.7 mm for Modification 2 Building. Based on the analysis results, it can be concluded that Modification 2 is the most effective model to resist earthquake loading.Keywords: Shear wall, Irregular Building, Eccentricity, Displacement
Identifikasi Faktor-Faktor Yang Mempengaruhi Nilai Idle Time (IT) Di Pelabuhan Dumai (Dermaga A) Feri Setiawan; Trimaijon Trimaijon; Ferry Fatnanta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Ports are place for docking, shipping and unloading. Any activities have done by any ships have some difference. Problem due shipping activities is idle time (IT) during working caused by several factors raining, loading, regulation, damaged crane ships, etc. Other problem from shipping a factor classification is necessity.Factors that cause idle time are classified into three groups. 1) Human error including waiting for truck, operator, worker, and delay for work. 2) Technical errors including emptying storage, damaged equipment, and damaged ship, 3) Factor fromnature including rain and tides. All these factors cause delays in shipping. Based on the analysis, the most dominant factor in fluctuation is due damaged equipments with the total number of hours were 283.6 hours a year. Mean for the dominant factor due damaged equipments waste 23.64 hours per month. Solution of the problems that occur are the good planning on shipping and co-ordination between companies and port management.Keywords: harbor, Idle time, loading and unloading, equipment failure
Business Hotel Di Pekanbaru Dengan Pendekatan Arsitektur Tropis Lesmana, Andri; Aldy, Pedia; S, Mira Dharma
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Pekanbaru is the capital of Riau province which became one of the provinces whose economic growth is very rapid. From small economy sectors even up to business and foreign investors are in Pekanbaru. Pekanbaru also has become a destination town investors both from within the country and also abroad have been widely developed in the city of Pekanbaru. But the facilities and space requirements to support the economy really was little. Therefore, the hotel business is becoming one of the alternatives for developing the economic sector in the city of Pekanbaru. In the design of the hotel business, applied design approach emphasizes the principles of tropical architecture with the aim of building that is designed into a building that can decrease bad influence on the environment, nature, and human and produce a better and more healthy. However, to support this scheme deeper then also applied the concept of "dynamic building design" which is a concept with a combination of several elements supporting tropical architecture such as the orientation of the sun, the air, environment, footprint and also a structure that would be a unified whole in the building. Coupled with tropical architectural design strategy according to Ken Yeang be: (1) the Sun relates to the direction of the building; (2) Rain associated with the utilization of rain water to the building; (3) The shadow Associated with the shape of the building; (4) Moisture associated with air utilization strategies; (5) natural aesthetics associated with the aesthetics of the building. Keyword: Business Hotel. Tropic Architecture, Dinamic Building Desain, Ken Yeang design

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