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PRESUNIVE CIVIL ENGINEERING JOURNAL
Published by President University
ISSN : -     EISSN : 2987145X     DOI : -
Core Subject : Art, Engineering,
PRESUNIVE CIVIL ENGINEERING JOURNAL [ISSN2987-145X (online)] is a scientific publication media for researchers, students as well as practitioners in the area of expertise of Structural Engineering, Construction Engineering & Management, Geotechnical Engineering, Water Resources Engineering, and Transportation Engineering. The Journal publishes in April and October under the supervision of the Civil Engineering Study Program, President University.
Articles 5 Documents
Search results for , issue "Vol 2, No 2 (2024)" : 5 Documents clear
Compressive Strength of Concrete with Malang Sand as Fine Aggregate Substitute Santoso, Muhammad Iqbal Paramatatya Satyawan; Bali, Ika
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 2 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i2.5463

Abstract

Malang sand has small and rough grains with a sharp surface, it can easily absorb water and adhere to cement. It is very suitable for use as fine aggregate in concrete to improve the quality and durability of concrete. As sand from a volcano, Malang sand has similar characteristics to sand from cold lava resulting from volcanic eruptions. In another study, concrete with sand from cold lava of Sinabung volcano was reported to have the highest compressive strength in a mixture variation of 60-70% of Sinabung sand at the age of 14 days. This study focuses on investigating the compressive strength of concrete with the addition of Malang sand as partly replacement of 50-70% of the fine aggregate material. The concrete design method uses practical guidelines for designing concrete mixes according to Indonesian standard (SNI), and for testing the compressive strength of concrete using ASTM C-39. The percentage of sand used in this study is 50%, 60%, and 70% as a substitute for fine aggregate with a concrete age of 28 days. Based on the study results, the maximum average compressive strength is achieved for the concrete with Malang sand of 70% (MSC 70%) with a compressive strength of 31.89 MPa or an increase 4.32% compared to normal concrete. In this study indicated that the trend of compressive strength is increase with the increase of Malang sand content in the concrete.
Analysis of the Acceleration of Tower Project Activities using the What/If Method Juniarti, Risma Sari; Bangkara, Anaconda; Wisaksono, Anggoro
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 2 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i2.5493

Abstract

In the construction of the Pegadaian Tower project, the delays experienced were evidenced by the project implementation not being in accordance with the plans that had been designed before the construction process began. The project planning made by the contractor is planned for the topping off process or final floor casting of the superstructure construction phase to be carried out in September 2022 or in the 18th month of the total 25 months of work on this project. Efforts made to adjust the implementation of the plan were to accelerate this project, where the acceleration was carried out using the What/If method by adding working hours (overtime) and the number of workers at the research object who worked on the Mezzanine floor to the 5th floor at the superstructure stage. Apart from the What/If method as an acceleration solution, initial efforts were made by evaluating the project schedule using the Precedence Diagramming Method (DPM) network planning method with the help of Microsoft Project software. The analysis carried out resulted in good acceleration where the acceleration analysis using the What/If method can speed up the completion of superstructure construction so that it can help achieve the topping off target in September according to what has been planned in the schedule. Meanwhile, adding labor and working time to these three important activities can speed up the duration of the project so that the project avoids contract loss penalties with the owner.
Construction Cost Reduction in Design of Prestressed Concrete Structural System Surbakti, Michelia Esteruli Instia; Hariandja, Binsar; Bali, Ika
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 2 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i2.5483

Abstract

Concrete material has moderately strong compressive strength, but relatively weak tensile strength. To overcome this problem, three kinds of systems can be applied, namely reinforced concrete system, composite concrete system, and prestressed concrete system. In a prestressed concrete system, a compressive force is applied to annihilate the tension region in the concrete section. Compared to reinforced concrete, prestressed concrete requires a smaller section of concrete, since the whole cross section is in compression and active. However, prestressing concrete needs the use of high strength steel wire which is extremely costly. The use of prestressing concrete may be carried out using minimization on the use of such expensive high strength steel. In this research, two methods of minimization of the use of high strength steel, which are the shifting of the support of the beam to get the smaller field moment. The other method is to reshape the concrete section to have a higher moment of inertia. It is found out that the two methods perform well in the minimization process of construction cost of the prestressing concrete beam.
Analysis of Minimum Service Standards and Passenger Satisfaction for the Electric Train (KRL) on the Cikarang–Sudirman Commuter Line Maruddhany, Rhystya Atysya; Sudjatmiko, Eddy Triyanto; Prihartono, Prihartono
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 2 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i2.5510

Abstract

KRL is a public transportation system is in the great interest of the Indonesian because it is considered effective and efficient for the community and can be a solution to streamline the mobility of the population, especially for the populace in the Jabodetabek region. As the number of passengers increases every year, it is important to know the services and facilities provided by the operator. This research aims to determine the quality of services and facilities of this transportation mode, both at the station and during the trip. The study examines the KRL Commuter Line service between Cikarang and Sudirman, with Sudirman Station selected as a representative sample for analysis. The analysis is made in accordance with Regulation of the Minister of Transportation No. 63 of 2019, and the level of customer satisfaction is analyzed using the Important Performance Analysis/IPA method and Customer Satisfaction Index/CSI. The research indicates that the services at Sudirman Station comply with most of the minimum standards outlined in the regulation, however some facilities need to be provided such as full platform roof, customer work desk and elevator or lift for disable. While on the train, CCTV and first aid kit need to be installed. According to the IPA method, there are attributes of service that need to be enhanced on the primary priority scale: (1) the height/width difference of the station platform floor and the railroad floor; (2) seating facilities in the waiting room; (3) passenger service facilities such as work desks; (4) a special elevator (lift) for passengers using wheelchairs; (5) availability of a first aid kit in each train set; (6) space capacity to carry standing maximum of 1 m2 for 6 people; (7) availability of CCTV in the train; and (8) punctuality of departure or arrival time. In addition, the CSI score for KRL Sudirman station's quality of service performance is 71.60%, indicating that customers are satisfied with the quality of service provided.
Sediment Characteristics and Prediction of Sediment Yield in Drainage Channel: A Study on Yos Sudarso Street Cikarang City Irianto, Emilia Arista; Sudjatmiko, Eddy Triyanto; Bali, Ika
PRESUNIVE CIVIL ENGINEERING JOURNAL Vol 2, No 2 (2024)
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/pcej.v2i2.5529

Abstract

Yos Sudarso Street, Cikarang City, is crucial for mobility and economic activity. However, Yos Sudarso Street has waterlogging and flooding issues due to severe sediment accumulation, resulting in siltation of the channel, so it cannot flow stormwater properly. This study aims to identify sediment characteristics and predict sediment yield in the drainage channel on Yos Sudarso Street, Cikarang City. It’s essential because sediment has negative impacts on drainage channels. The limited studies on sediment characteristics and sediment yield prediction in urban areas make this study necessary. The bed sediment samples were taken from 3 points in the drainage channel to identify the sediment characteristics. Sediment yield prediction using the Universal Soil Loss Equation method based on rainfall erosivity, soil erodibility, slope length, steepness, and crop management factors. The sediment characteristics at sites 1, 16, and 17 were dominated by large sand grains (0.82-1.81 mm) that were difficult to transport. Poorly sorted indicates low flow energy. Grain size distribution extends to fine grains. Sites 1 and 17 are concentrated at mean size, while site 16 is concentrated at the extreme size. The sediment yield prediction by the universal soil loss equation is 1.989 (t/ha/yr). This information can be used to formulate effective sedimentation control strategies.

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