ABSTRACT The Widening Project to Add Lanes to the Siak IV Pekanbaru Access Road is one of the road construction projects that experienced a delay of 27.791% of the planned schedule. The delay requires risk identification and assessment as an initial form of risk management. This study aims to identify the causative factors of the risk of delays during the construction period by using one o…
ABSTRACT The high level of side obstacles due to market activities is one of the causes of disruption to the smooth flow of traffic on the HR. Soebrantas road in front of Pasar Simpang Baru Panam. One of them is on-street parking activity. On-street parking can reduce the effective road width and road capacity, which will affect the performance of the road section. From the analysis, it is fou…
ABSTRACT Tribology is a scientific field that studies the interaction of surfaces involving friction, wear, and lubrication in relative motion. Lubrication is one effective method to reduce friction and wear. To minimize the use of environmentally negative mineral oil-based lubricant, alternative lubricant sources such as vegetable oils, including palm oil, are utilized. In this research, RBD …
ABSTRACT Tribology is a science that focuses in friction, wear, and lubrication between two asperities undergoing relative motion. Any friction occurred between base body and contacy body may resulting some wear particles that detached from the two asperities. To minimize the wear phenomenon, lubricants must be added between the base body and the contact body. Lubrication in one method tha…
ABSTRACT Tribology is a science that focuses in friction, wear, and lubrication between two asperities undergoing relative motion. Any friction occurred between base body and contacy body may resulting some wear particles that detached from the two asperities. To minimize the wear phenomenon, lubricants must be added between the base body and the contact body. Lubrication in one method that is…
ABSTRACT Ethylene glycol with the molecular formula C2H6O2 is a colorless and odorless liquid, relatively volatile with low viscosity. Ethylene glycol is used mainly as an antifreeze in car radiators and as a raw material for the manufacture of polyester fibers, besides that as an auxiliary material in the latex industry and coolant in compressors. The main raw materials used in the manufactur…
ABSTRACT Calcium hydroxide is a chemical compound that is very useful as a raw material in the gypsum, dicalcium phosphate dihydrate (DCPD), citric acid, paper and sugar industries. Based on BPS data, Indonesia is one of the most important calcium hydroxide producers in the Asian region. Therefore, a calcium hydroxide factory was designed to operate continuously for 330 days/year with a capa…
ABSTRACT Rainfall data plays an important role in predicting flood risk and drought. Due to the high cost of establishing and operating rainfall observation stations and the difficult topography of mountainous areas, the number of rain observation stations is limited. Rainfall measurements at each observation station are point rainfall data. The GPM (Global Precipitation Measurement) satellite…
ABSTRACT The buck converter functions to control the DC voltage by making the output voltage smaller than the input voltage. The use of buck conveter has problems with the output voltage, so a control system is needed that is able to stabilize the output voltage of the buck converter. The purpose of the thesis is to design and simulate a buck converter DC-DC solar charger system using PID contr…
ABSTRACT Bangau Sakti Road is located in Bina Widya Sub-district of Pekanbaru City, this road connects HR Soebrantas road and Naga Sakti road which is a collector road, with a short distance, so this road is classified as a local road. In the urban transportation system, Pekanbaru is one of the cities that has a high level of vehicle density that causes traffic congestion. Bangau Sakti is a ro…
ABSTRACT Peat is soil with high water content and organic content. This causes peat to have high levels of compressibility and settlement as well as low bearing capacity. Because of this, an alternative has emerged to use helical piles which can increase the bearing capacity of peat. This study aims to investigate the effect of creep parameters and the distance between helical pile foundations…
ABSTRACT Pyridine is a heterocyclic organic compound whose structure resembles benzene where one methyl group is replaced by a nitrogen atom with the chemical formula C5H5N. Pyridine is used as a raw material for pharmaceuticals, paint solvents, rubber, and polycarbonate resins. The need for pyridine in Indonesia is still met through import activities. The pyridine plant is planned to operate …
ABSTRACT Radio over Fiber (RoF) is a system where radio frequency (RF) signals are transmitted through optical fibers to support wireless communication services. The advantage of RoF lies in its lower construction costs and economic feasibility. However, RoF systems face the issue of chromatic dispersion over certain fiber lengths, leading to significant power loss. This research focuses on th…
ABSTRACT Solar energy is one of the renewable energy sources that can be harnessed for electricity generation. One of the increasingly popular types of power generation is Rooftop Solar Power Plants (PLTS) which are installed on rooftops. These systems have gained popularity across various sectors, including residential, commercial, industrial, and government buildings. The primary goal of roo…
ABSTRACT There are several public transportation alternatives available for travelers on the Pekanbaru - Medan route, namely buses, travel, and airplanes. This study identifies alternative modes that tend to be use in each service standard or criteria. Furthermore, it becomes the first step in improving service standards and public transportation modes. The criteria considered are fare, trav…
ABSTRACT Pre-fabricated Vinyl Chloride Monomer plant of acetylene and chlorine is designed with a capacity of 89,700 tonnes/year to be planned to be built in the Balaraja Industrial Area, Banten. The plant is planned to operate for 330 days in a year with a total of 342 employees. Vinyl monomer chloride is made by hydrochlorination of acetylene with the help of K2PdCl4 catalysis at the gas pha…
ABSTR ABSTRABSTRACT Ethylene dichloride or 1,2-dichloroethane with the molecular formula C2H4Cl2 is a reactive and highly toxic organic compound characterized by a clear, oil-like liquid with a chloroform-like odor. The high demand for EDC (ethylene dichloride) in Indonesia is still met through imports from several countries such as China, the United States, Germany, Korea, and Qatar. The prod…
ABSTRACT Polyethylene terephthalate (abbreviated as PET, PETE or formerly PETP, PET-P) is a thermoplastic plastic polymer resin of the polyester group. PET is widely produced in the chemical industry and is used in synthetic fibers, beverage bottles and food containers, thermoforming applications and combined with glass fibers in engineering resins. PET is also a raw material in the textile in…
ABSTRACT Potassium Phosphate (KH2PO4) is one of the few inorganic fertilizers produced locally. This fertilizer consists of the main components of potassium and phosphate where these elements are macronutrients needed by plants. The need for imports of Potassium Phosphate in Indonesia has tended to increase in the last five years. Potassium Phosphate production plants are still minimally estab…
ABSTRACT Polypropylene is a thermoplastic polymer that has the following monomeric structure: -CH2=CH2. Polypropylene is the raw material for making various kinds of plastic goods with the current market price of 2500-3000 USD/ton. Polypropylene is an important and widely used thermoplastic polymer. The development of various variations and the breadth of its use, it is possible to manipulate …