cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota pekanbaru,
Riau
INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
Arjuna Subject : -
Articles 3,145 Documents
 90   91   92   93   94 
Evaluasi Kerentanan Bangunan Gedung Terhadap Gempa Bumi Dengan Rapid Visual Screening (RVS) Berdasarkan Femad 154 Rahmatul Firdaus; Alex Kurniawandy; Zulfikar Djauhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Earthquake is a disaster that could bring a disadvantage on society, either materials or lifes. Although Pekanbaru City is not a city with numerous of earthquakes, but Pekanbaru City had ever felt the impact of the earthquake on September, 2009. The earthquake took place on West Sumatera, was caused by frictions between two plates, which were Eurasia Plate and Indo-Australia Plate. To anticipate a bad impact that would happened by earthquake, therefore it is necessary to evaluate the building`s vulnerability against earthquake by using FEMAP 154. The vulnerability of the each buildings toward earthquake are different. This is based on the non structural components on the buildings which would influenced the evaluation result later. From the research, it shown that the vulnerability of the buildings in some places in Pekanbaru City are quite well. It proved by the building`s vulnerability analysis against earthquake had fulfilled the evaluation of FEMAP 154 Keywords : Earthquake, Vulnerability, FEMAP-154.
Pengaruh Waktu Pengadukan Terhadap Nilai Slump Dan Kandungan Udara Serta Kuat Tekan Beton Khaidir, Trifad Mochd; Kurniawandy, Alex; Ermiyati, Ermiyati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The compression strength of concrete can be affected by many factors. One of them are water-cement ratio and duration of mixing. The duration of mixing is usually only being estimated by workers and supervisors. In this research, the duration of mixing used are 2, 3, 4, 5, and 6 minutes with water-cement ratio 0,4 and 0,5. The 2 minutes duration of mixing being used as reference. From the result of the research, it can be seen that the value of water-cement ratio can also affect the value of air content and slump. The more liquid water-cement ratio of 0,5 can be produce a higher slump value. The air content and the slump may decrease as the duration of mixing increase, thus the 6 minutes duration has the smallest value compared to other duration. The highest compression strength is 33,12 MPa at 6 minutes for water-cement ratio 0,4 and 35,12 MPa at 5 minutes for water-cement ratio 0,5Keywords: water-cement ratio, compression strength, duration of mixing, air content, fresh concrete
Analysis On Worker Productivity At SKPD B6 Office Building Construction Project In Kelurahan Sail Kecamatan Tenayan Raya Pekanbaru Winson Enrique H; Rian Trikomara; Hendra Taufik
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Worker productivity greatly impacts the success of construction projects. Therefore, it is imperative to perform analysis on the determination of worker productivity. The worker productivity on the column, beam, and floor slab rebar detailing, formwork, and concrete casting process were observed directly on the field. The field observations were intended to measure the time required to complete a specified amount of tasks, so the necessary amount of work hours per day to finish the entire work could be determined. The time values obtained from the observations were then processed to determine the productivity coefficient of workers for each tasks. Based on the analysis results, the productivity coefficient for column rebar detailing task was 0.035 for worker, 0.015 for rebar detailer, and 0.005 for supervisor. For column formwork task, the productivity coefficient was 0.083 for worker, 0.125 for carpenter, and 0.042 for supervisor. For column concrete casting task, the productivity coefficient was 0.194 for worker, 0.097 for skilled worker, and 0.097 for supervisor. For beam rebar detailing task, the productivity coefficient was 0.065 for worker, 0.043 for rebar detailer, and 0.011 for supervisor. For beam formwork task, the productivity coefficient was 0.127 for worker, 0.085 for carpenter, and 0.042 for supervisor. For beam concrete casting task, the productivity coefficient was 2.268 for worker, 0.567 for skilled worker, and 0.567 for supervisor. For floor slab rebar detailing task, the productivity coefficient was 0.020 for worker, 0.020 for rebar detailer, and 0.005 for supervisor. For floor slab formwork task, the productivity coefficient was 0.521 for worker, 0.347 for carpenter, and 0.174 for supervisor. For floor slab concrete casting task, the productivity coefficient was 1.705 for worker, 0.426 for skilled worker, and 0.426 for supervisor.Keywords: productivity, coefficient, workers, supervisor, floor slab
Sifat Mekanis Beton Akibat Pengaruh Steel Slag Sebagai Bahan Subtitusi Agregat Halus dengan Agregat Lokal Riau Wirma, Rizki; Kurniawandy, Alex; Ermiyati, Ermiyati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The research has a purpose to study the mechanical properties of concrete when using steel slag as an alternative for subtituting sand material in the mixture of concrete with fc’ 25 MPa. This research consisted of 6 tests. They were permeability, porosity, shrinkage, compressive strength, Scanning Electronic Microscope (SEM) and Energy Dispersive Spectrometry (EDS). The steel slag used were 0 % and 30 % of total weight of sand. The permeability and porosity test were carried out at 28 days. The shrinkage test was conducted at 7 days. The compressive strengths were tested at 28, 91, and 180 days. The samples were soaked in normal and peat water. According to the permeability, porosity, and shrinkage test, the concrete using 30 % steel slag got lower value compared to a normal concrete. Regularly, when the normal concrete is soaked in normal water, the compressive strength risen up at 28, 91, and 180 days. On the other hand, the concrete soaked in peat water gets the compressive strength increased at 28, 91 days, but fell down at 180 days. Based on the compressive strength results, the concrete using 30 % steel slag continued to increase with day, although they were soaked in normal or peat water. SEM test showed that steel slag occupied the void between aggregate and cement paste. It made the void of concrete became denser and got a higher strength. EDS test revealed that the concrete using 30 % steel slag contained pozzolanic material.Keywords : Steel slag, Permeability, Porosity, Shrinkage, Compressive strength, SEM, EDS.
Rancang Bangun Filter Harmonik Untuk Perbaikan Kualitas Daya Pada Pembangkit Listrik Tenaga Surya 320 WP Anggoro Arso Pambudi; Nurhalim Nurhalim
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

With the progress of industry, power electronic equipment is widely used in power system, it has produced serious harmonic distorsion. It goes without saying that harmonic analysis is a very important subject in power system. The influence of harmonics dominant because it is permanent. This harmonic influence spread to energy systems, energy devices, and influential to the energy source. For that it is necessary a tool that is able to overcome these problems so that the electric energy services are not compromised and the reliability was not reduced. This study how to harmonic analysis, total harmonic distrosion, and identifying the inverter at a solar power plant 320WP in accordance with the IEEE 519-2014.Keywords: harmonic, THD, inverter, solar power plant 320WP, IEEE
Anaisa Perencanaan Desain Jaringan Broadband Fiber To The Home (FTTH) Di Universitas Riau Dwi Putra Retdha Yuhana; Linna Oktaviana Sari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This script discusses about FTTH network design planning analyzes each respective faculty buildings which exist at the University of Riau. Fiber To The Home (FTTH) using a broadband Internet connection that uses fiber-optic cables, optical-based systems can deliver a wide array of digital information, such as voice, video, data, known as the triple play. Riau University located in panam has 7 faculty reached its 700 acres. The results of the design of the Broadband network Fiber To The Home of the University of Riau need Optical Network Terminal as much as 209 fruit, the Optical Distribution Point used totaled 34 fruit and Optical Distribution Cabinet 1 alone is enough backup area University of Riau with all types of ODC 144 24 core capacity.Keywords : FTTH, University of Riau
Analisa Alternatif Perbaikan Untuk Mengatasi Drop Tegangan Pada Feeder Kota 20 KV Di Rokan Hulu Muhammad Fadli Biya Lubis; Nurhalim Nurhalim
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Power plant system is far away from central load. This resulted losses in the distribution ofelectrical power. The loss caused by the channel is long enough. So, in the distribution of electricalpower through the transmission and distribution electrical power, there are always drop voltagealong the transmission line. Large voltage drop that occurs greatly be affected by the large currentsand impedance values so that the voltage drop occurs in feeder city in Rokan Hulu and voltage dropthat occurs in feeder city of 17,581 kV or 12,095 % is still in PLN standard because it has notexceeded the standards determined that is equal to ±10% of nominal voltage There are several waysto correct voltage drop in the study are using the method of replacing the feeder cable, Capacitorbanks and tap-changing tranformer. From the analysis of the obtained that big’s voltage drop thatoccurs less than the prior improvements that are very instrumental in reducing a large voltage drop.In this repair the best lessening voltage drop is use capacitor bank of 18,900 kV or 8,015% ofvoltage about. And have met the PLN standard.Keyword : feeder cable, capacitor banks, tap-changing tranformer, voltage drop.
Sintesa Fluorinated Tin Oxide (FTO) Menggunakan Prekursor Ramah Lingkungan Dan Penambahan Graphene Dengan Metode Deposisi Spray Coating Untuk Aplikasi Material Konduktif Transparan Rino Rinaldi; Amun Amri; Khairat Khairat
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Fluorine doped tin oxide (FTO) films were fabricated on a glass substrate by a spray coating deposition methode. Non-toxic SnF2 was used as fluorine source to replace toxic HF or NH4F. Effect of SnF2 content, 0 – 10 mol% and 115 ppm graphene as comparison to the fluor content on the substrate, on structure, electrical resistivity, optical transmittance of the films and morfology were investigated using X-ray diffraction (XRD), Multimeter, UV–vis spectra and Scanning Electron Microscopy (SEM). Structural analysis revealed that the films are amorf with crystal structure. Grain size varies from 501 nm - 175 nm with increasing fluorine concentration, which in fact critically impacts resultant electrical and optical properties. The 300 °C-annealed FTO film containing 10 mol% SnF2 shows the lowest electrical resistivity 14,1 x 10-4 Ωcm, on 5x deposition repeat, optical transmittance 86,4% on 0 mol% SnF2 with once deposition repeat. The highest figure of merit 0,0453 x 104 Ω-1cm-1 which is used for standart of best quality of transparent conductive oxide (TCO). Because of the promising electrical and optical properties, F-doped thin films prepared by this green process are well-suited for use in all aspects of transparent conducting oxide.Keywords: Fluorine doped tin oxide (FTO) films, Transparent conducting oxide (TCO), Sol–gel dip-coating, Electrical resistivity, Optical properties, Figure of merit
Potensi Air Kondensat Sebagai Media Pendingin Untuk Aplikasi Modul Evaporative Cooling Terhadap Performansi AC Split 1 PK Muhammad Rif’at Syahnan; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Air Conditioning (AC) machines with standard vapor-compression cycle has higher energy consumption, because the condenser is directly cooled by outside air. The condensate from evaporator has a temperature around 10-15°C. This study is determined the potential of evaporative cooling by using the condensate as a cooling medium for the condenser of incoming air cooler. This study used experimental method by testing of the effect of water condensate usage with the performance of standard of vapor compression cycle. The results showed that the using of Evaporative Cooling (EC) can reduce the incoming air into the condenser with an average temperature of 29.14 ° C (without cooling load) and 30.96 ° C (with 2000 W of cooling load). Then, the average working of the compressor without cooling load, before using EC was 0.60 kW and after using EC of 0.55 kW. A given cooling load of 2000 W was revealed an average working of compressor of 0.63 kW (without EC) and 0.59 kW (with EC). The compressor works decreased due to the using of an evaporative cooler.Keywords: Evaporative cooling, Condensate, Compressor work.
Analisis Kekuatan Kolom Beton Bertulang Dengan Penampang Persegi Dan Silinder Akibat Beban Ledakan (Blasting Loads) Brian Priadana Mulrony; Reni Suryanita; Ismeddyanto Ismeddyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bomb attack by terrorist in recent years had caused significant damage to structures, especially building structures. A bomb explosion within or nearby a building could cause huge damage toward structure even life loss. Due to the threat of bomb attack and it’s impact, it had become necessity to analyze the effect of blasting load on structures. One of solution that could be applied in order to decrease the impact was by strengthening the column element of a building. This research compared the column strength between cylinder column and square column. Each column had equal quality of concrete material and steel reinforcemenl. The purpose of this research was to conclude which type of column had better strength when subjected to blasting load. There were four portals variation used in this analysis, which each portal subjected to different parameter of blasting load. Parameter of blasting load used were 100 kg and 500 kg weight of TNT with 10 m and 15 m stand-off distance. The type of blasting load in this analysis was surface burst and its parameter calculated with ATBlast software. Beside variation of weight and stand-off distance, location of bomb planted also variated too, which were in front of and beside of building. Analysis result showed that among all of portal variation, the cylinder column had better strength than square column. It was proven by capacity design check and percentage of failed column. Based on analysis result, cylinder column type had smallest percentage of failed column with 6.06%, whereas the square column type had largest percentage of failed column with 59.60%.Keywords: Blasting loads, Reflection wave, Surface Burst, Interaction Diagram

Page 92 of 315 | Total Record : 3145

 90   91   92   93   94 

Filter by Year

2014 2022


Reset
Filter By Issues
All Issue Vol 9 (2022): Edisi 1 Januari s/d Juni 2022 Vol 8 (2021): Edisi 2 Juli s/d Desember 2021 Vol 8 (2021): Edisi 1 Januari s/d Juni 2021 Vol 7 (2020): Edisi 2 Juli s/d Desember 2020 Vol 7 (2020): Edisi 1 Januari s/d Juni 2020 Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 Vol 6 (2019): Edisi 1 Januari s/d Juni 2019 Vol 6 (2019): Edisi 1 Januari s/d Juni 2019 Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 Vol 5 (2018): Edisi 1 Januari s/d Juni 2018 Vol 5 (2018): Edisi 1 Januari s/d Juni 2018 Vol 5, No 1 (2018): Wisuda April Tahun 2018 Vol 5, No 1 (2018): Wisuda April Tahun 2018 Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017 Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017 Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016 Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016 Vol 3, No 1 (2016): Wisuda Februari Tahun 2016 Vol 3, No 1 (2016): Wisuda Februari Tahun 2016 Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015 Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015 Vol 2, No 1 (2015): Wisuda Februari Tahun 2015 Vol 2, No 1 (2015): Wisuda Februari Tahun 2015 Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014 Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014 Vol 1, No 1 (2014): Wisuda Februari Tahun 2014 Vol 1, No 1 (2014): Wisuda Februari Tahun 2014 More Issue