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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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PENGARUH VARIASI JARAK PELAT HELICAL TERHADAP KAPASITAS DAYA DUKUNG TEKAN PONDASI HELICAL PILE PADA TANAH GAMBUT DENGAN METODE CONSTANT STRESS OF PENETRATION Fadhilah, Randy; Fatnanta, Ferry; Nugroho, Soewignjo Agus
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

A study of the determination of helical pile bearing capacity based on static load test on peat soil has been done previously. However, the research is still covered in one method of loading which is the Constant Rate of Penetration (CRP). Therefore, it is deemed necessary to apply static load test on the helical pile on peat soils by using other loading method as a comparison. One of the test methods is Constant Stress of Penetration loading test. In this research, the helical piles used amounted to 9 piles. The loading were performed in six stages with a total load of 1200 kg. The data obtained from this test consist of settlement curve against time and loading curve against settlement. Determination of bearing capacities of helical piles were based on individual bearing and cylindrical shear method, and interpretation of test data based on Tangent Intersection and Terzaghi & Peck method. The results of the interpretation of the test data indicate that in the LMS (Large-Medium-Small)and LM (Large-Medium)helical pile groups have effective space between helical plates is from 20 to 30 cm. While in the LL (Large-Large) helical pile group, the effective space between the helical plates is from 30 to 50 cm. Based on comparison of calculation result with interpretation of test data, peat coefficient value used is 8%. Interpretation of test data tends to be closer to the cylindrical shear method with a standard error of 0.74 than the individual bearing method with standard error of 1.03.Keywords: Helical Pile, Peat Soil, Individual Bearing, Cylindrical Shear
Kinerja Kolektor Pemanas Air Tenaga Surya Menggunakan Bekas Kaleng Minuman Sebagai Absorber Dengan Air Yang Bersirkulasi Pada Pembukaan Katup 30o Eigko Malau; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Nowadays, hot water is widely used for bath. For produce hot water, people usually use furnace to boil the water and other use an electricity to heat the water. Research in solar water heater can be the alternative to get hot water without using fossil fuels, replace the furnace and water that used electricity. In this study the solar collector was made the beverage cans as the absorber. The purposes of this study was to achieve the value of efficiency of solar collector and temperature of water at the outlet of storage tank, which the water circulation and a valve were opened at 30o. The dimensions of solar water heater were 2.3 meter in length, 0.8 meter in width and 1.8 meter in height and its volume of 127 L. The solar collector was placed at outside of laboratory Universitas Riau for 9 hours. The data taken from the testing were the temperature of absorber, flow rate, light intensity and temperature of water inlet and outlet. The result of this study showed the second day of the experiment, that was a better efficiency with 34.5%. Whilst, the highest temperature of water circulation was 44.9oC that was occurred in the first day.Keywords: Absorber, Solar Water Heaters, Collector.
Studi Variasi Ukuran Partikel Biosolid IPAL Pabrik Kelapa Sawit (PKS) Menggunakan Aktivator H3PO4 Syafdika Sari Siregar; Elvi Yenie; Syarfi Daud
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Abstract

The untreated Biosolid Waste of POM from WWTP can be pollutants for the soil surface. The Biosolid Waste utilization through the sustainable approach of environment is by changing the waste biosolid POM from WWTP into the adsorbent. The particle size of the activated carbon biosolid POM be varied in a range, those are 100 and 120 mesh and chemically activated with H3PO4 9% as activators and physically activated using furnaces with temperatures of 500 °C for an hour. The best quality of biosolid POM as activated carbon is analyzed by water content, ash content and the absorption of iodine, in amount of 3.48%; 0.33%; 25.380 mg/g while the biosolid POM in particle size of 120 mesh were added.Keywords : Adsorbent, activated carbon, biosolid, particle size.
Potensi Daur Ulang Sampah Non Domestik Di Wilayah Pengembangan V Kota Pekanbaru Suci Sukmawati; Elvi Yenie; Jecky Asmura
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The generation data, composition and characteristics of waste are needed in planning waste recycling systems in waste management. This research was conducted in Development Area V with a total sample of 58 units in Marpoyan Damai Subdistrict, 66 units in Tampan Subdistrict and 43 units in Payung Sekaki Subdistrict. Determination of non domestic waste generation based on the method of SNI 19-3964-1994 carried out for eight consecutive days. The results of the study indicate that the average generation school waste is 0,003 kg/person/day or 0,008 l/person/day. The average generation of health facility waste is 0,007 kg/m2/day or 0,0028 l/m2/day. The average generation of office waste is 0,046 kg/person/day or 0,133 l/person/dayy. The average genartion of market waste is 0,029 kg/m2/day or 0,033 l/m2/day. The average genaration of shop waste is 0,333 kg/person/day or 1.130 l/person/day. The average generation of restaurant waste is 0,009 kg/m2/day or 0,021 l/m2/day and the average hotel waste is 0,063 kg/tt/day or 0,311 l/tt/day. The biggest composition of organic waste is dominated by organic waste as much as 49,85 %/day. The results of the physics characteristic are compaction factors of 1,29 liters and chemical charateristics for water content of 21,13%, volatile content of 52,62%, ash content of 12,91% and fixed carbon of 13,01%. The results of potential recycling in Marpoyan Damai Subdistrict were 13,95, in Tampan District at 13,88% and Payung Sekaki District at 16,82%.Keywords: waste generation, composition of waste, characteristics of waste, potential for recycling waste.
Perancangan Fasilitas Komunitas Kristen Di Pekanbaru Dengan Pendekatan Arsitektur Simbolik Yohanes Sitorus; Yohannes Firzal; Ratna Amanati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Abstract

The development of the Christian is basically not detached from some roles of the Church's youth as the next generation. In developing nations which have various crises, the role of youth with great spiritual, intelligent, and morality quality is required. With the rapid growth of Christian population in Pekanbaru, a means known as Christian community facility is needed to motivate the Christians, especially the youths in order to realise the great potential in themselves. This facility is meant to be centre of icon for the youths in conducting spiritual guidance. To maintain christianity values, this Christian facility will be designed using symbolic architectural approach which applies Eikumene philosophy in its design concept. Those symbol and principle will make atmosphere in the design stronger with Christian spirituality nuance. Christian spirituality nuance applied on orientation, symbol, aperture, colors, sound and vegetation.Keyword: Christian, Eikumene, Symbolic Architecture.
Inaktivasi Askospora Talaromyces Sp. Dalam Jus Nanas Menggunakan Proses Termal Doni Fozla; Evelyn Evelyn; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Talaromyces sp. is a heat resistance mold. Talaromyces sp. ascospore can survive after pasteurization and germinate in low pH fruit juices. Food preservation by thermal processing is a conventional treatment method and is still often applied today. The aim of this study was to investigate the effect of temperature (T: 85 °C, 88 °C, 91 °C) and soluble solid content (SS: 10 °Brix, 20 °Brix, 30 °Brix) on the thermal inactivation of Talaromyces sp. Ina-CC F155 ascospore. It was found that the ascospore log reduction increased with increasing temperature. For example, at SS; 10 °Brix there was a reduction of 2.5 log after 22.3 minutes for 85 °C, 14.3 minutes for 88 ° C and 9.3 minutes for 91 °C. in contrast, increasing soluble solid content resulted in the increases of Talaromyces sp. ascospore resistance in pineapple juice. The results of this study emphasize the importance of temperature and soluble solid content for heat resistance of Talaromyces sp. ascospore in juice.Keywords: ascospore, inactivation, pasteurization, thermal process, Talaromycessp.
Japura Pilot Academy Dengan Pendekatan Arsitektur Metafora Lupita Lupita; Wahyu Hidayat; Pedia Aldy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Lack of source needs experts in aviation in Indonesia, especially in Indragiri Hulu Regency, Riau becoming a problem in the world of transportation. Provision of aviation facilities must be supported by a reliable human resources and competent in their fields. Flight school to become a facility to produce reliable human resources and competently, especially in the field of aviation in particular Department of the Pilot. In the design of aviation high school needs to be seen applying the concepts and themes. So the design approach will use the architecture of a Tangible Metaphor will apply the shapes of Dragonfly, so people can identify the function of building just by looking at the physical appearance of the building and generate a more modern formations. Produce a more expressive architecture by trying to move the information from the subject to the building. The result was the Japura Pilot Academy will implement a Dragonfly into buildings.Keywords: Pilot, Aviation High School, Metaphore Architecture
Tinjauan Evaluasi Kelayakan Finansal Bus Trans Metro Pekanbaru (Studi Kasus: Koridor I Pandau – Ramayana) Andri Mahendra; Hendra Taufik; Sri Djuniati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Pekanbaru is the capital city of Riau Province which located in the center of Sumatra Island has made the government has a vision and a mission to transform the city of Pekanbaru as a metropolitan city. There are a lot of public transport users in the city of Pekanbaru. Some of them use Trans Metro Pekanbaru. The current investment in transportation is something that very risky because it requires huge modal, it is important to analyze the financial feasibility and a Vehicle Operational Cost (VOC). While analyzing the financial aspects by calculating the net present value, benefit cost ratio, internal rate of return, payback period and also sensitivity analysis. As a result the operational vehicle`s cost was Rp. 3738.63/km while the result of analysis combination with 30% equity and 70% of loans has produced the total investment costs of TMP reached Rp. 21,502,524,300.00 with NPV of Rp.6.944.296.351,48. BCR of 1.19 and PBP for 5 years and 8 months (the period time of vehicles for 7 years). It can be concluded that the investment is financially viable so investment Trans Metro Pekanbaru deserve to be operationalized.Keywords : Trans Metro, Analysis of Financial, Sensitivity Analysis, Investment, Pekanbaru
Stabilisasi Tanah Lempung Dengan Pasir Bermacam Gradasi Dan Campuran Kapur M. Shoffar Al Hafizh; Gunawan Wibisono; Soewignjo Agus Nugroho
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Unconfined compression strength and CBR values of sandy clay are influenced by several factor such as sand and clay content, soil properties, density, moisture content, and gradation. This research tries to figure out the effect of sandy clay gradation on its unconfined compression strength and CBR values. Sandy clay mixtures were made from different percentage of sand and clay fractions. Sand fraction gradation varied from well to poor (gap). Clay was also stabilized with quick lime. The results of this research indicated that the addition of sand and lime into clay increased unconfined compression strength and CBR values, especially after 28 days curing time. The largest value of unconfined compression strength test occurred at mixture with 70% clay, due to the cohesiveness obtained from clay and lime stabilisation. The largest CBR values were found in the mixture with less contained clay.Keywords: unconfined compression strength,CBR, gradation, density, sand, clay
Porositas Beton High Volume Fly Ash (Hvfa) Di Air Gambut Ika Qoriah Nursuci; Ismeddiyanto Ismeddiyanto; Monita Olivia
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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This study aims to examine the porosity of concrete with the use of fly ash as a substitute for a large portion of cement (HVFA). Ordinary Portland Cement (OPC) specimen is used as a control of HVFA concrete. The content of pozzolanic material in HVFA concrete is 45% of fly ash. Fly Ash (FA) contained in HVFA concrete in this study had a variation of 50% by weight of cement. After the concrete was released from the mold, OPC and HVFA concrete was cured by soaking it normal water for 28 days. Then, the specimen is was removed and soaked again in peat water for ages 7 and 28 days. When concrete reached their respective ages, porosity testing was carried out on concrete. The results shared that the porosity of OPC immensed in peat water was 17.35% higher than that of immensed in normal water. The increase of porosity on OPC specimen was do the attack of acid contained in peat water which made the specimen became porous and increased its porosity value. On the other hand, HVFA specimen was more resistant to peat water. This was indicated by a decrease in the porosity value of 19.83%. HVFA specimen contained large amounts of FA, the pozzolanic FA makes concrete more resistant to the peat environment and neutralizes the impact of peat on specimen. Keywords: Porosity, fly ash (fly ash), HVFA, peat water.

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