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All Journal Jurnal Rekayasa Sipil dan Desain PENDIPA Journal of Science Education Journal of Engineering and Scientific Research (JESR)
nur syahidah aini
Jurnal Rekayasa Sipil Dan Desain
Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Engineering Industrial & Manufacturing Engineering Mathematics

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Green Building Assessment and Recommendations for Optimization Case Study of the Rectorate Building the University of Lampung Ika Kustiani; Masdar Helmi; Nur Syahidah Aini
Journal of Engineering and Scientific Research Vol. 5 No. 1 (2023)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v5i1.135

Abstract

The Green Building Concept is a concept that offers a method of managing buildings with less energy and resources utilization to minimize the environmental impact. Since its implementation to be mandator, it is time for the University of Lampung to start implementing this concept. This research was aimed at assessing the Rectorate Building rating based on the national standard on Green Building Certification (Greenship-GBCI). There were several steps in conducting this research. Firstly, an opinion survey was conducted to measure the level of satisfaction of the building’s users. Secondly, a series of measurements related to lighting, temperature, humidity, noise, and air quality were carried out. Furthermore, an interview survey related to the operation and maintenance of the building were conducted. Finally, all of these data were entered in the Green Building rating tool for existing buildings. The results showed that the Rectorate Building score was 23 out of 117. This score is way below the score for a bronze rating of 35. Therefore, corrective action must be taken in order the building operation management to meet the Greenship-GBCI standard. Assessment also needs to be done on buildings througout the university for a reference in developing the University of Lampung Eco-campus program.
Perancangan Filter Pasif Pada Gardu Traksi di Stasiun Citayam Guna Mengurangi Efek Distorsi Harmonisa Putri Jori, Rahmatika Dwi; Sari, Nurwanda; Desliana, Lulu Syahira; Maulidina, Siti; Mardhotillah, Nur Anisa; Arif, Muhammad Rizki; Aini, Nur Syahidah
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.742-751

Abstract

Electric Rail Trains (KRL) have become the most frequently used transportation mode for daily activities in the community. One of the existing problems within the operation system of Electric Rail Trains (KRL) lies in the current rectification process. During this rectification process, an effect occurs that can cause disturbances in the KRL's electrical system. This resulting effect is the harmonic effect. This study aims to address the problem of power quality degradation in the Electric Rail Train (KRL) at the Citayam Station Traction Substation, which is caused by this harmonic effect. The harmonic effect arises from the process of rectifying alternating current (AC) into direct current (DC) using a silicon rectifier, which can lead to voltage drop, speed reduction, or even the operational stoppage of the KRL.The research method used is quantitative descriptive. The study did not conduct direct measurements but instead used averaged assumption data from three related journals as primary data. The data analyzed were the values of Total Harmonic Distortion (THD) for both current and voltage, particularly focusing on the 5th, 7th, and 11th harmonic orders, which were identified as the highest contributors to the harmonic distortion. To mitigate the harmonics, this study designed a single-tuned passive filter using the ETAP (Electric Transient Analysis Program) software. The design aims to suppress the harmonic distortion, thereby improving the electrical power quality, maintaining the reliability of the traction substation, and optimizing KRL operations. The single-tuned passive filter designed in this research was capable of suppressing harmonics by up to 0.009%.
Analisis Investasi Rekayasa Proyek Springhill Condotel Lampung Aini, Nur Syahidah; Kustiani, Ika; Siregar, Amril Ma'ruf
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 7 No. 1 (2019): Edisi Maret 2019
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v7i1.1101

Abstract

Pada masa sekarang, apartemen tidak hanya menjadi hunian pribadi tetapi juga sebagai investasi. Karena itu terjadi permintaan apartemen dalam bentuk kondominium hotel. Springhill condotel Lampung adalah condotel pertama yang dibangun di Bandar Lampung. Investasi Springhill Condotel Lampung memerlukan analisis kelayakan memastikan pengembalian investasi. Pada penelitian ini, studi kelayakan hanya dinilai dari aspek finansial dengan menggunakan beberapa parameter penilaian investasi yaitu NPV (Net Present Value), BCR (Benefit Cost Ratio), IRR (Internal Rate of Return), dan PP (Payback Period). Analisis dibuat dalam 9 (sembilan) buah skenario. Skenario ini divariasikan berdasarkan tingkat-tingkat inflasi dan prediksi-prediksi penjualan. Skenario yang paling layak yaitu pada tingkat inflasi 7% dan prediksi penjualan dengan metode trend linier. Seluruh skenario menunjukan bahwa nilai NPV, BCR dan PP layak. Namun seluruh skenario menunjukan bahwa nilai IRR di bawah tingkat bunga.  Kata kunci : Studi kelayakan, Kondotel, Net Present Value (NPV), Benefit Cost Ratio (BCR), Payback Period (PP), Internal Rate of Return (IRR)
Co-Authors Amril Ma'ruf Siregar Desliana, Lulu Syahira Ika Kustiani Mardhotillah, Nur Anisa Masdar Helmi Muhammad Rizki Arif Nurwanda Sari Putri Jori, Rahmatika Dwi Siregar, Amril Ma'ruf Siti, Maulidina