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All Journal AGREGAT Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Akselerasi Jurnal Ilmiah Teknik Sipil International Journal Science and Technology (IJST) Advance Sustainable Science, Engineering and Technology (ASSET) Media Konstruksi : Jurnal Ilmiah Teknik Sipil Jurnal Abdi Karya Sipil
Elok Dewi Widowati
Program Studi Teknik Sipil, Fakultas Teknik Dan Sains, Universitas Pembangunan Nasional ”Veteran” Jawa Timur
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Social Sciences Transportation Other

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Financial Performance Assessment of Flat Buildings Using Life Cycle Cost and Cost–Benefit Analysis Griselda Junianda Velantika; Reguel Mikhail; Karina Meilawati Eka Putri; Elok Dewi Widowati; Rizqi Alghiffary; Muhamad Fauzan Akbari
Advance Sustainable Science Engineering and Technology Vol. 7 No. 1 (2025): November-January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i1.1005

Abstract

Buildings resulting from construction projects are durable assets and decisions related to construction projects have enduring impacts. In many cases, building owners prioritize only the initial costs, such as building design, construction, and equipment costs, while neglecting the future operation and maintenance costs. This research studies life cycle costing (LCC) analysis to evaluate the financial feasibility of urban housing. The LCC calculates all the costs incurred and benefits during the building's operation. The cost is generated from construction, operational, and maintenance costs. At the same time, the benefit breaks down into flat rental costs, retail rental costs, and parking costs. The costs incurred are estimated over 25 years, and the parameters of feasibility are net Present Value (NPV), Benefit-Cost Ratio (BCR), and Internal Rate of Return (IRR). The study generates negative NPV, BCR < 1, and 0.61% of IRR. It indicates that the project is not feasible. This research gives alternatives to make the project feasible. This study employed a trial-and-error approach to ascertain the viability of investing in flat rentals by systematically adjusting rental rates. Incremental adjustments to rental rates are tested by a series of rate hikes of 50%, 100%, 150%, and 200% using a trial-and-error approach. The project will become feasible if the flat rate increases to 150-200% of the initial rental rate.
Penerapan Prinsip Pareto dalam Evaluasi Alternatif Percepatan Waktu pada Proyek Pembangunan Jalan di Kabupaten Sidoarjo Menggunakan Critical Path Method Azzuma Prameswari; I Nyoman Dita Pahang Putra; Elok Dewi Widowati
MEDIA KONSTRUKSI Vol. 10 No. 2 (2025)
Publisher : Jurusan Teknik Sipil, Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jmk.v10i2.126

Abstract

Keterlambatan dalam pelaksanaan proyek konstruksi, khususnya proyek pembangunan jalan, merupakan permasalahan umum yang berdampak pada meningkatnya biaya dan menurunnya efisiensi pelaksanaan proyek. Penelitian ini bertujuan untuk menganalisis penyebab keterlambatan serta merumuskan alternatif percepatan waktu pada proyek pembangunan jalan akses di Kabupaten Sidoarjo. Metodologi yang digunakan mencakup analisis prinsip Pareto untuk mengidentifikasi faktor-faktor utama penyebab keterlambatan, serta penerapan Critical Path Method (CPM) untuk menentukan hubungan antar aktivitas dan durasi normal dari sisa pekerjaan. Selanjutnya, pendekatan Time Cost Trade-Off (TCTO) digunakan untuk menyusun penjadwalan ulang dengan menambahkan waktu kerja selama 3 jam pada 7 dari 9 pekerjaan dominan yang teridentifikasi melalui analisis Pareto. Hasil penelitian menunjukkan bahwa percepatan proyek dapat dicapai selama 19 hari, dari tanggal penyelesaian semula 31 Desember 2025 menjadi 12 Desember 2025. Analisis ulang mengidentifikasi 10 pekerjaan kritis, dengan mayoritas merupakan pekerjaan dominan yang ditemukan melalui penerapan prinsip Pareto. Hasil penelitian menunjukkan bahwa percepatan yang dilakukan melalui optimalisasi pekerjaan-pekerjaan dominan dan berada pada jalur kritis mampu secara signifikan mempersingkat durasi proyek dengan cara yang efektif dan efisien.
Komparasi Prediksi Penyelesaian Proyek dengan Earned Value dan Earned Schedule Elok Dewi Widowati
Akselerasi : Jurnal Ilmiah Teknik Sipil Vol 7, No 2 (2025): November
Publisher : Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/aks.v7i2.16407

Abstract

Manajemen waktu merupakan aspek krusial dalam kesuksesan proyek konstruksi, terutama dalam menghadapi dinamika pelaksanaan yang kerap berubah. Salah satu tantangan utama adalah menyediakan estimasi penyelesaian proyek yang akurat dan responsif terhadap perkembangan aktual di lapangan. Selama ini, metode Earned Value Management (EVM) banyak digunakan untuk memantau kinerja biaya dan jadwal, namun pendekatan ini memiliki keterbatasan dalam menggambarkan keterlambatan atau percepatan proyek dalam satuan waktu. Untuk menjawab kekurangan tersebut, Earned Schedule Management (ESM) hadir sebagai metode alternatif yang mengubah indikator jadwal dari berbasis biaya menjadi berbasis waktu. Penelitian ini bertujuan untuk membandingkan akurasi prediksi durasi penyelesaian proyek antara metode EVM dan ESM pada proyek pembangunan gedung perbelanjaan di Kota Malang. Penelitian dilakukan dengan pendekatan kuantitatif dan deskriptif melalui analisis data mingguan progres proyek dari minggu ke-1 hingga ke-20. Indikator utama yang dianalisis meliputi SPI (Schedule Performance Index) dan IEAC (Independent Estimate at Completion), baik dalam bentuk biaya maupun waktu. Hasil analisis menunjukkan bahwa metode ESM lebih akurat dalam memperkirakan durasi penyelesaian proyek. Pada minggu ke-19, nilai SPI(t) sebesar 1,530 menghasilkan estimasi waktu penyelesaian proyek sekitar 197 hari, atau 103 hari lebih cepat dari rencana awal 300 hari. Sementara itu, EVM menunjukkan kecepatan progres, tetapi kurang sensitif terhadap pergeseran waktu aktual. Dengan demikian, ESM direkomendasikan sebagai pendekatan yang lebih efektif dalam memantau dan meramalkan jadwal proyek konstruksi secara dinamis dan realistis.
FEASIBILITY EVALUATION OF THE RELATIONSHIP BETWEEN BCWS, BCWP AND ACWP IN ROAD CONSTRUCTION PROJECT Massayu Sekar Bawana; I Nyoman Dita Pahang Putra; Elok Dewi Widowati
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 5 No. 3 (2025): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/morfai.v5i3.2991

Abstract

The development of adequate infrastructure, such as roads, bridges, and other public facilities, play a vital role in driving national economic growth. Infrastructure projects require careful planning and controlled execution to ensure effective and efficient outcomes. This study focus on addressing the common issues of delays and cost overruns that frequently occur during project implementation. The objective is to analyze the alignment between planned and actual project performance. Using a quantitative methods, this research integrated the Earned Value Method (EVM) to assess project performance. The results indicate that, between weeks 26 and 39, the project generated performance that was both ahead of schedule and below budget. This is evidenced by positive values in both schedule and cost variance (SV and CV), along with the Schedule and Cost Performance Index (SPI and CPI) values exceeding 1. However in week 40, a decrease in schedule performance was observed, leading to a slight project delay. The project’s estimated overall cost is IDR 116.8 billion, representing a decrease from the initial budget allocation, with an estimated delay is only around 18 days.
Analysis of Natural Stone Wall Function Index Using Fuzzy Building Service Life (FBSL) Griselda Junianda Velantika; Ayu Fatimah Sari; Karina Meilawati Eka Putri; Elok Dewi Widowati
International Journal Science and Technology Vol. 5 No. 1 (2026): March: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v5i1.2612

Abstract

Natural stone wall claddings are widely used in residential buildings, but their functional performance often declines earlier than the building’s structural design life due to environmental exposure and installation-related deterioration. Objective: This study aims to quantify the functional condition of natural stone wall claddings using a Function Index (FI) so that maintenance decisions can be made more consistently and objectively. Methodology: A quantitative case-study approach was applied to five residential buildings in Situbondo Regency. Data were collected through field observations and building-age documentation, assessed using expert judgment, and analyzed using a fuzzy inference-based Fuzzy Building Service Life (FBSL) model to obtain a crisp FI score for each building. Findings: The results indicate that one building was classified as moderate/fair (FI = 56), while four buildings were classified as poor (FI = 0–23), implying higher maintenance urgency. When linked to the estimated Remaining Service Life (RSL) under an assumed 50-year design life and a 2020 observation year, an exploratory exponential relationship between FI and RSL was obtained (y = 12.177e0.3243x; R² = 0.7444). Implications: The FI can serve as a practical decision-support indicator to prioritize immediate repair, scheduled maintenance, or routine monitoring for façade components, even when the building still has considerable remaining design life. Originality: This research contributes by integrating a fuzzy-based functional condition index for natural stone claddings with a remaining service life perspective in a residential case-study context, bridging qualitative inspection outcomes with interpretable maintenance planning.
Analisis Evaluasi Tiang untuk Stabilisasi Lereng dengan Metode Elemen Hingga Dua Dimensi Karina Meilawati Eka Putri; Griselda Junianda Velantika; Rizqi Alghiffary; Elok Dewi Widowati; Muhamad Fauzan Akbari
AGREGAT Vol 11 No 1 (2026)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ag.v11i1.31293

Abstract

Landslides due to slope instability are natural phenomena that can lead to substantial damage to infrastructure, loss of property, and human fatalities. Slope-stabilizing piles are among the most effective and widely used recently to increase slope stability. This paper presents an evaluation of slope-stabilizing piles using 2D finite element method (FEM), including a parametric study on the effects of pile diameter, pile spacing, and pile length on the pile responses, such as bending moment and deformation. The analysis conducted in this research employed the 2D FEM. FEM modeling was performed with the plane strain model and the Hardening Soil (HS) soil constitutive model. A parametric study was conducted by varying the pile parameters, such as pile length (12, 16, and 20 meters), diameter of pile (0.6, 0.8, 1.0, and 1.2 meters), and pile spacing (1.5D, 2D, 3D, and 4D). Based on the analysis results, pile length shows the most significant influence on slope stability; an increase in pile length is proportional to an increase of the factor of safety and bending moments but inversely proportional to the resulting deformation. On the other hand, pile diameter was found to have no significant impact on the improvement of the Factor of Safety in this study, although dimensional variations affect internal forces, specifically regarding deformation and bending moment distribution within the pile. Furthermore, increasing the spacing between piles tends to decrease the factor of safety because it weakens the soil arching mechanism, which subsequently increases deformation at the pile head. This research suggested that the optimization of slope stability is more dependent on the embedment length of pile and pile spacing rather than the pile diameter.
Pengaruh Pelatihan Mitigasi Bencana terhadap Tingkat Kepedulian Lingkungan Siswa Pondok Pesantren Progresif Bumi Shalawat Sidoarjo Sutarto Wondo Saputro; Muhamad Fauzan Akbari; Elok Dewi Widowati
Jurnal Abdi Karya Sipil Vol. 2 No. 1 (2026): April 2026
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Sains, Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jaksi.v2i1.15

Abstract

Indonesia memiliki tingkat kerawanan bencana yang sangat tinggi, terutama gempa bumi dan kebakaran, yang membutuhkan upaya mitigasi untuk meningkatkan kesiapsiagaan di lingkungan sekolah. Salah satu sekolah yang memiliki tingkat kerawanan bencana cukup tinggi adalah Pesantren Progresif Bumi Shalawat Sidoarjo, yang memiliki kondisi bangunan bertingkat dengan akses evakuasi terbatas. Program pengabdian masyarakat ini bertujuan untuk mengevaluasi pengaruh pelatihan mitigasi bencana terhadap peningkatan kepedulian lingkungan siswa dalam menghadapi bencana. Metode yang digunakan meliputi pelatihan mitigasi bencana yang mencakup gempa bumi dan kebakaran, diikuti dengan sosialisasi, demonstrasi penggunaan alat pemadam kebakaran, serta survei dan wawancara untuk mengukur perubahan kepedulian siswa terhadap lingkungan sekitar. Hasil pelatihan menunjukkan adanya peningkatan pengetahuan dan keterampilan mitigasi bencana serta perubahan sikap siswa yang lebih peduli terhadap potensi bahaya dan cara pencegahan di lingkungan sekolah. Dengan demikian, pelatihan ini berhasil menciptakan budaya kesiapsiagaan yang berkelanjutan di Pesantren Progresif Bumi Shalawat Sidoarjo, serta meningkatkan kepedulian lingkungan siswa terhadap potensi bencana.
Co-Authors Ayu Fatimah Sari Azzuma Prameswari Griselda Junianda Velantika Griselda Junianda Velantika Griselda Junianda Velantika I Nyoman Dita Pahang Putra Karina Meilawati Eka Putri Karina Meilawati Eka Putri Karina Meilawati Eka Putri Massayu Sekar Bawana Muhamad Fauzan Akbari Muhamad Fauzan Akbari Reguel Mikhail Rizqi Alghiffary Rizqi Alghiffary Sutarto Wondo Saputro