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All Journal International Journal Science and Technology (IJST) Jurnal Teknik dan Science (JTS) International Journal Multidisciplinary Science
Era Agita Kabdiyono
Dian Nusantara University
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Social Sciences

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Analysis of Clean Water Needs and Wastewater Management of Japfa Office Building Yuli Sulistiyohadi; Agus Jumkhairul; Era Agita Kabdiyono
Jurnal Teknik dan Science Vol. 4 No. 2 (2025): Juni : Jurnal Teknik dan Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/jts.v4i2.2232

Abstract

Japfa Compeed Building is an office building managed by PT Ometraco Arya Samanta, has 7 floors and has just started operating and was inaugurated in January 2025. The building is located at Jalan Daan Mogot KM 12 No. 9, Cengkareng, West Jakarta. The building covers an area of approximately 29,272 m2. To ensure employee comfort, an effective clean water and wastewater management system is required, complying with the latest Indonesian National Standard, SNI 8153:2015. To meet the clean water needs of a population of 662, 39.72 m3 of clean water is required per day. The ground water tank capacity is 13.24 m3, while the roof water tank capacity is 2.92 m3. This office building has a Wastewater Treatment Plant (WWTP) with a water discharge capacity of 40 m3/day. Some of the wastewater is treated through a Wastewater Treatment Plant (WWTP), with a maximum capacity of 10 m3/day of recycled water. The water discharge savings generated from the WWTP reach 101 m3 per month, according to daily water discharge checks. The building also utilizes a Water Level Control (WLC) system for the distribution of clean and recycled water, enabling automatic water level control.
Redesign of the Foundation for Development of Al Barokah Foundation Flat to Bore Pile Foundation Era Agita Kabdiyono; Rinaldi Silaban
International Journal Multidisciplinary Science Vol. 4 No. 3 (2025): October: International Journal Multidisciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v4i3.2295

Abstract

The purpose of redesigning the foundation of the Al Barokah Foundation Apartment into a Bore Pile Foundation is to increase the bearing capacity and ensure structural stability against applied loads. The foundation bearing capacity calculation is based on Standard Penetration Test (SPT) data using the Mayerhoff method on cohesive soil.The results of this research include studying the analysis of changes in deep foundations, soil characteristics, and the foundation's bearing capacity against building loads. The foundation redesign involves using a 60 cm bore pile. For pile cap PC 1, the dimensions are 120 x 120 cm and 60 cm thick. For PC 2, the dimensions are 120 x 120 cm and 60 cm thick, with a concrete quality of fc'=25 MPa. The bore pile reinforcement design for the BP 1 pile foundation is 10D19, with shear reinforcement of D10-52 mm. For the PC 1 pile cap design, the compression main reinforcement in the x- and y-axes is D13-530 mm. For the tension main reinforcement, a diameter of D13-150 mm is used, based on SNI 2847:2019. The foundation settlement value for each pile is the same, at 1.71 cm, which is still within the tolerance limit according to SNI 8460:2017.
Analysis of Design Change Management in a Construction Project at Jl. Duta Permai 2 No. 6, Pondok Indah: Case of Owner Mr. Patrick Muhammad Malik Abdul Jabbar; Era Agita Kabdiyono
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2289

Abstract

Design changes in construction projects often pose significant challenges, impacting the cost, quality, and timeline of the projects. This study aims to analyze the management of design changes in a construction project located at Jl. Duta Permai 2 No. 6, Pondok Indah, with a focus on identifying the causes, the management strategies implemented, and their overall impact on the project. The research employs a qualitative descriptive method, collecting data through interviews, observations, and analysis of relevant documents. The findings indicate that the primary factors causing design changes include regulatory changes, owner requests, and technical constraints that arise during construction execution. The management strategies applied by the project team, while systematic, still face challenges in communication that can hinder decision-making. The results reveal that poorly managed design changes can lead to project delays and cost increases of up to 20%. This study recommends enhancing communication among stakeholders and providing training on change management to minimize the impacts of design changes in the future. Through this analysis, it is expected to provide insights and references for project managers and future researchers in managing design changes more effectively
Co-Authors Agus Jumkhairul Muhammad Malik Abdul Jabbar Rinaldi Silaban Yuli Sulistiyohadi