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Mitigasi Faktor-Faktor Penyebab Cost Overrun pada Proyek Gedung Pendidikan Turrohmah, Annisa; Adi, Henny Pratiwi; Niam, Moh Faiqun
Jurnal Talenta Sipil Vol 8, No 2 (2025): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i2.906

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Cost overrun is a significant challenge in construction projects, including educational buildings, which results in budget cuts, project delays, and increased maintenance costs. This study analyzes cost overruns on three projects in Central Java: IAIN Kudus Integrated Laboratory Building (1%), UIN Walisongo Mahad Building (2.3%), and Rembang MIN 1 Class Building (10%). These three projects were chosen because they have varying scales of cost increases and different characteristics of educational buildings. The research used quantitative methods with a questionnaire involving 53 respondents from consultants and contractors. Data analysis was carried out by testing validity, reliability, correlation, and dominant factor analysis using SPSS. The research results show that the main factors causing cost overrun are design changes and non-compliance with schedules (0.77), delays in material delivery (0.76), as well as inadequate planning and delays in equipment delivery (0.74). Other factors include ineffective decisions, poor financial management, and suboptimal cost control. Mitigation recommendations include improving the quality of planning, strict cost control, implementing systematic risk management, and utilizing BIM technology to increase estimation accuracy and decision-making efficiency to reduce the risk of cost overrun.
Implementasi Analisis Perencanaan Kebutuhan dan Penataan Ruang Parkir di RSUD Gambiran Kota Kediri Suwandrianto, Dedik; Adi, Henny Pratiwi; Poedjiastoeti, Hermin
Jurnal Kajian Ruang Vol 5, No 2 (2025): September
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jkr.v5i2.45424

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ABSTRAKRSUD Gambiran Kota Kediri mengalami peningkatan jumlah pengunjung, pasien, dan staf yang berdampak pada kebutuhan ruang parkir, khususnya kendaraan roda empat. Kondisi ini menyebabkan ketidakseimbangan antara kapasitas parkir eksisting dan volume kendaraan. Penelitian ini bertujuan untuk menganalisis kebutuhan parkir dan menilai efisiensi penataan ruang guna merumuskan solusi perbaikan yang tepat. Metode yang digunakan adalah pendekatan deskriptif kuantitatif dengan studi kasus. Data diperoleh melalui survei primer terhadap volume, durasi, indeks parkir, dan turn over kendaraan, serta data sekunder dari sistem parkir otomatis dan denah area parkir. Analisis dilakukan berdasarkan perhitungan Satuan Ruang Parkir (SRP) dan evaluasi efisiensi tata letak. Selama empat bulan pengamatan, tercatat volume harian rata-rata kendaraan roda dua sebanyak 1.020 unit dan roda empat 153 unit. Kapasitas parkir sepeda motor sebanyak 490 petak dinilai mencukupi dengan indeks parkir maksimum 4,5 dan turn over 0,81. Namun, kapasitas parkir mobil sebanyak 194 petak tidak memadai, dengan indeks parkir 7,5 dan turn over 1,54, terutama pada jam sibuk pukul 07.00–10.00 dan 15.00–18.00. Rekomendasi mencakup penambahan 192 petak mobil di lahan kosong sisi barat, penataan ulang layout dengan pola 45°, serta pembangunan gedung parkir bertingkat. Strategi ini diproyeksikan meningkatkan efisiensi ruang parkir hingga 30% dan mencukupi kebutuhan hingga tahun 2030. Penelitian ini berkontribusi dalam perencanaan transportasi fasilitas publik dengan mengusulkan pendekatan kuantitatif berbasis SRP dan tingkat perputaran parkir untuk meningkatkan efisiensi ruang parkir di kawasan padat lalu lintas.Kata Kunci: Efisiensi, Parkir, Penataan, Sattuan Ruang Parkir (SRP), Turn Over ABSTRACTRSUD Gambiran Kota Kediri has experienced an increase in the number of visitors, patients, and staff which has an impact on the need for parking spaces, especially four-wheeled vehicles. This condition causes an imbalance between existing parking capacity and vehicle volume. This study aims to analyze parking demand and assess the efficiency of spatial arrangement in order to formulate appropriate improvement solutions. The method used is descriptive quantitative approach with case study. Data was obtained through a primary survey of volume, duration, parking index, and vehicle turnover, as well as secondary data from automated parking systems and parking area plans. Analysis was conducted based on the calculation of Parking Space Units (SRP) and evaluation of layout efficiency. During the four months of observation, the average daily volume of two-wheeled vehicles was 1,020 units and 153 units of four-wheeled vehicles. The motorcycle parking capacity of 490 plots is considered sufficient with a maximum parking index of 4.5 and turnover of 0.81. However, the car parking capacity of 194 plots is inadequate, with a parking index of 7.5 and a turnover of 1.54, especially during the peak hours of 07.00-10.00 and 15.00-18.00. Recommendations include the addition of 192 car plots in the vacant lot on the west side, rearrangement of the layout with a 45° pattern, and construction of a multi-storey parking structure. This strategy is projected to increase parking space efficiency by 30% and meet demand until 2030.Keywords: Efficiency, Parking, Arrangement, Parking Space Units (PSU), Turn Over
Analisis Waktu dan Biaya Proyek Bendungan Tigadihaji: Studi Kasus Paket 1 di OKU Selatan Prasetyo, Adil Farhan; Adi, Henny Pratiwi; Niam, Moh Faiqun
Jurnal Kajian Ruang Vol 5, No 2 (2025): September
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jkr.v5i2.48163

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AbstrakBendungan Tigadihaji merupakan infrastruktur strategis untuk irigasi, penyediaan air baku, PLTA, dan pengendalian banjir di Sumatera Selatan. Proyek Paket 1 mengalami keterlambatan signifikan sehingga memerlukan strategi percepatan yang efektif. Penelitian ini bertujuan mengevaluasi tiga alternatif percepatan, yaitu crashing (penambahan jam kerja/lembur), overlapping (pengubahan hubungan antaraktivitas), dan kombinasi keduanya, dengan mengukur dampak terhadap durasi serta biaya proyek. Analisis dilakukan menggunakan metode jalur kritis (CPM) berbasis data jadwal dan biaya kontrak. Percepatan dihitung dari perbedaan durasi total proyek serta perubahan biaya langsung dan tidak langsung. Hasil menunjukkan bahwa crashing dapat memperpendek durasi sebesar 191 hari dengan efisiensi biaya sekitar Rp2,45 miliar. Metode overlapping mempercepat 115 hari dengan efisiensi Rp2,05 miliar. Strategi kombinasi memberikan hasil terbaik dengan percepatan 321 hari dan efisiensi Rp4,76 miliar. Temuan ini menegaskan bahwa kombinasi crashing dan overlapping merupakan pilihan paling optimal dalam percepatan proyek berskala besar. Implikasi praktisnya, kontraktor dan pemilik proyek dapat menghemat waktu hampir satu tahun dengan tambahan biaya yang relatif kecil, sehingga risiko keterlambatan lebih lanjut dapat ditekan. Bagi pengambil kebijakan, hasil ini menunjukkan perlunya dukungan regulasi dan pengendalian mutu yang lebih adaptif agar strategi percepatan dapat diimplementasikan tanpa mengurangi keselamatan maupun kualitas konstruksi. Dari perspektif tata ruang, percepatan penyelesaian bendungan mempercepat pula penyediaan infrastruktur dasar yang mendukung produktivitas pertanian, ketahanan air, dan pengembangan wilayah.Kata kunci: Crashing; Overlapping; Bendungan Tigadihaji AbstractThe Tigadihaji Dam is a strategic infrastructure for irrigation, raw water supply, hydroelectric power (PLTA), and flood control in South Sumatra. Package 1 of the project has encountered significant delays, necessitating effective acceleration strategies. This study aims to evaluate three acceleration alternatives: crashing (adding work hours/overtime), overlapping (modifying inter-activity relationships), and their combination, measuring impacts on project duration and cost. The analysis uses the Critical Path Method (CPM) based on contractual scheduling and cost data. Acceleration is measured as the difference in total project duration and changes in direct and indirect costs. Results show that crashing can reduce the project duration by 191 days with a cost saving of approximately Rp2.45 billion. The overlapping method accelerates the schedule by 115 days with savings of Rp2.05 billion. The combination strategy achieves the best result: 321 days of acceleration with efficiency of Rp4.76 billion. These findings confirm that the combination of crashing and overlapping is the optimal method for accelerating large-scale projects. In practice, contractors and project owners can save almost one year with relatively modest additional costs, thereby mitigating further delay risks. For policymakers, these results indicate the need for adaptive regulation and quality control so that acceleration strategies can be implemented without compromising safety or construction quality. From a spatial planning perspective, accelerated completion of the dam also speeds up the provision of basic infrastructure that supports agricultural productivity, water security, and regional development.Keywords: Crashing; Overlapping; Tigadihaji Dam
Analisis Kinerja Proyek Perbaikan Gas Denydration Unit Dengan Metode Earn Value Analysis (EVA) Khakim, Ahmad Nur; Adi, Henny Pratiwi; Wibowo, Kartono
Jurnal Ilmiah Wahana Pendidikan Vol 11 No 9.A (2025): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

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Konsep Earned Value adalah salah satu metode dalam pengelolaan proyek yang menggabungkan elemen biaya dan waktu secara terintegrasi.Penelitian ini bertujuan untuk mengetahui Variansi, Performa, Proyeksi dan Percepatan berdasarkan biaya dan waktu dalam pelaksanaan Proyek Perbaikan Unit Dehidrasi Gas. Metode penelitian menggunakan Analisis Deskriptif dengan menerapkan teknik analisis nilai meliputi tahapan yang meliputi pengumpulan informasi, observasi, wawancara dan pengumpulan dokumen. Kesimpulan penelitian dengan menggunakan Metode Earn Value Analysis diperoleh kesimpulan bahwa pada Minggu ke 57 Proyek mengalami keterlambatan dengan Cost Performance Index (CPI) = 0,97 dan Schedule Performance Index (SPI) = 0,99, dimana proyeksi biaya dan waktu pada akhir Proyek mempunyai nilai Budget Estimate at Completion (BEAC) = Rp 16.009.108.921 dengan Nilai Kerugian -Rp 251.567.949 dan Schedule Estimate at Completion Value (SEAC) = 71,18 minggu, mengalami keterlambatan 1,18 minggu atau 8,26 hari. Dengan skenario percepatan dimana terjadi percepatan 9 hari kerja diperoleh efisiensi sebesar Rp. Didapatkan 212.363.811 sehingga jika tidak ada kendala keterlambatan kedatangan material di akhir proyek maka nilai akhirnya adalah -Rp. 39.204.138.
Analisis Estimasi Biaya Pemeliharaan Jalan Kabupaten di Kabupaten Cirebon Hakiim, Chevy Helmi; Mudiyono, Rachmat; Adi, Henny Pratiwi
VISA: Journal of Vision and Ideas Vol. 5 No. 2 (2025): Journal of Vision and Ideas (VISA)
Publisher : IAI Nasional Laa Roiba Bogor

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The condition of district roads in Cirebon, which continues to deteriorate each year, has encouraged the Cirebon District Government to continuously strive to carry out road maintenance. However, limited funding has become an obstacle to meeting all maintenance needs. Therefore, this study is considered important to assist the Cirebon District Government in managing district roads, particularly in road maintenance activities, to ensure that both maintenance methods and costs are implemented effectively and efficiently. This study uses the Surface Distress Index (SDI) method. Data collection was carried out through direct surveys of road damage as primary data. Several factors were identified in assessing pavement damage, including surface condition, type and width of cracks, percentage of cracking, number and size of potholes, wheel path depressions, edge damage, and the condition of other road ancillary structures. The results of the study conclude that out of the total length of the Sindanglaut–Pabuaran road, which is 14.1 km, 8.1 km is in good condition and requires routine maintenance, 2.8 km is in fair condition and requires periodic maintenance, 1.3 km is in lightly damaged condition and requires rehabilitation, and 1.9 km is in severely damaged condition and requires reconstruction. A maintenance budget of IDR 14,830,250,000.00 is required to restore and maintain the road in good condition.
Innovative Model for Assessing the Level of Failure Risk in Construction and Buildings Sayfuddin, S.; Adi, Henny Pratiwi; Pentenga, Tom Joy
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 7, No 1 (2024): April
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.7.1.18-29

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This research explores risk management in construction projects to prevent potential failures due to natural factors or human errors. The objective is to develop a risk assessment model for failures in construction and building projects, focusing on identification, categorization, risk level determination, and model development. The research benefits encompass theoretical contributions to construction risk management, governmental policy guidelines, operational assistance in project risk management, and enhancements in the safety and quality of construction projects. This research innovates by expanding research variables, incorporating failure risk level assessments, and utilizing technological approaches. The research methodology combines quantitative and descriptive approaches, focusing on failure risk factors from service/contractor providers, consultants, and project owners. Data is obtained through literature studies, secondary data, and primary data via questionnaires. The analysis involves factor analysis, importance index, impact probability matrix, and the Partial Least Square (PLS) method for structural analysis. The research conclusion identifies failure risk factors including financial aspects, management, equipment availability, and natural impacts such as floods and earthquakes. The risk assessment model categorizes risks into high, medium, and low, enabling appropriate anticipatory measures. This model provides guidance for stakeholders to mitigate risks, improve quality, and maintain the integrity of construction projects and buildings, supporting safety and success throughout project stages. This research makes a significant contribution to construction project risk management and construction quality improvement.
Evaluasi Optimalisasi Cash Flow Pada Proyek Multiyears Dengan Penyesuaian Perubahan Waktu Pelaksanaan (Studi Kasus Proyek Pembangunan Jalur Kereta Api Lintas Makassar-Pare pare) Andi Bongawali; Henny Pratiwi Adi; Juny Andry Sulistyo
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 6 No. 3 (2025)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol6iss3pp507-516

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The construction of the Trans-Sulawesi railway line is a railway network built to reach important areas on the island of Sulawesi. In general, the implementation of construction projects is limited by a certain time with limited resources to complete a given job, but due to the unavailability of land when the Work Start Order is issued, it causes a time addendum twice without any cost escalation. The purpose of this research is to get the optimal cash flow that can be obtained by contractors based on changes in implementation time and get the right strategy that can be applied in the future so that no more Addendum changes in implementation time can harm the implementing contractor. Data collection includes primary data by interviewing 25 respondents representing 155 populations consisting of 15 work units, 10 supervisory consultants, 25 implementing contractors and 105 land owners. Secondary data collection was carried out by requesting the necessary data from the implementing contractor. Cash Flow optimization evaluation is carried out by calculating 2 cash flow simulations, namely: Simulation 1 (823 days based on addendum 1), simulation 2 (1063 days / based on addendum 2). Determination of the right strategy to avoid addendum changes in implementation time is done using SWOT Analysis. Calculation of both simulations obtained results: In Simulation 1 (823 days) the acceleration of the implementer
Analisis Hidrologi Pada DAS Gonjol Sebagai Dasar Penanggulangan Banjir Di Kecamatan Sayung - Demak Ija, Lulu Isnaini; Wahyudi, S. Imam; Adi, Henny Pratiwi
Teknika Vol. 19 No. 1 (2024): Maret
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/teknika.v19i1.8092

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Banjir merupakan bencana alam dengan jumlah terbesar di Indonesia. Satu dari banyak wilayah yang menjadi langganan banjir adalah Kecamatan Sayung di Kabupaten Demak Provinsi Jawa tengah. Salah satu penyumbang debit banjir di daerah Sayung sungai Gonjol dimana memiliki dua peran yaitu penampungan debit air yang bersumber dari curah hujan dan penampungan debit air saat terjadi pasang air laut. Tujuan analisis hidrologi pada DAS Gonjol adalah untuk mengetahui debit banjir rencana periode ulang yang dapat digunakan dalam merencanakan penanggulangan banjir di Kecamatan Sayung Demak. Dalam Perhitungan debit banjir ini memakai data curah hujan maksimum yang didapat dari Stasiun Hujan Pucang Gading. Hasil Penelitian ini didapatkan grafik Intensitas hujan selama 24 jam untuk periode ulang 2, 8, 10, 20, 50 dan 100 tahun dan debit banjir maksimum DAS Gonjol yang didapat adalah Q2 (43,77m3/sec) , Q5 (51,73 m3/sec), Q10 (55,95 m3/sec), Q20 (59,40m3/det), Q50 (63,23 m3/sec), Q100 (65,87 m3/sec)
Factors affecting bond strength between acrylic dental elements and thermoplastic nylon bases: a systematic literature review Denny Adhinugroho Suciptoi; Henny Pratiwi Adi; Prabowo Setiyawan
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 3 (2026)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss3pp518-522

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The Transit Oriented Development Tanjungbarat Apartment Project is part of Perumnas' initiative to provide vertical housing integrated with public transportation. However, this project faces various challenges due to project risks, such as permitting issues, resource limitations, financial constraints, and other external factors. This study aims to analyze the influence of various types of risks on project success, assess risk probability and impact, and evaluate the risk mitigation strategies implemented by Perum Perumnas.The research employs a quantitative method with a case study approach. Data is collected through literature reviews, questionnaires, and interviews. The questionnaire respondents consist of 32 individuals, including the Project Management Office, project leaders, risk management, project structure, construction management, and construction executors involved in the TOD Tanjung Barat Apartment Project. The questionnaire results undergo validity and reliability testing, followed by multiple regression analysis. The identified risk variables are assessed using a risk scale formula (Probability × Impact) on a risk map to determine risk levels.The research findings indicate that the highest risk levels originate from resource-related aspects (4.08), design (4.06), environmental factors (4.06), financial aspects (3.72), and construction (3.87), all of which significantly impact project success. The risk matrix evaluation reveals that the project faces 4 risks at a high level, 7 at a moderate to high level, 6 at a moderate level, 8 at a low to moderate level, and 3 at a low level. The implemented risk mitigation strategies have proven effective in reducing risk levels, particularly for high-risk categories, contributing to the success of the Transit Oriented Development Tanjungbarat Project. However, continuous risk management is necessary to prevent risk escalation, especially for future project
Evaluation of The Implementation of Quality Management, Costs and Time in The Process of Self-Managed Project Development (Study on House Building Projects Muhammadiyah University Semarang Hospital) M Martomo; Henny Pratiwi Adi; Kartono Wibowo
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 7, No 2 (2024): October
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.7.2.184-198

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The construction of Universitas Muhammadiyah Semarang (Unimus) Hospital employs a self-management approach. During the construction phase, delays and a decline in building quality that did not align with the planning phase were observed. Therefore, a review of the management approach is necessary to ensure timely completion, maintained quality, and cost efficiency. This study evaluates the effectiveness of time, cost, and quality management in the construction project. The analysis method used is the interactive data analysis paradigm, involving data reduction, storage, and analysis using IBM SPSS 20. The analysis results indicate that time and cost management have been effective, with the construction work being completed within the set schedule and the costs not exceeding the Budget Plan. Quality management is rated very good with a score of 4.35, indicating that the construction process is strictly carried out according to specified materials and work procedures. Cost savings are also rated very good with a score of 3.89, indicating effective cost control. Time efficiency is rated good with a score of 4.06, showing that the project can run the schedule efficiently. Based on the research results, the researcher recommends enhancing leadership aspects and increasing active involvement of top management in supervision and strategic decision-making. This study also shows that self-management can promote transparency, efficiency, and high-quality outcomes in construction projects.
Co-Authors A Khamid A.A. Ketut Agung Cahyawan W Abdul Rochim Abdul Rochim Agung Hadi Brantas Agung Susanto Agustina, Rizqa Dwi Aini, Irvita Asri Andi Bongawali Andika, Reno Az Zukhruf, Alif Azmia, Ghefira Raras Nur Candra Irawan Chairurraziqin, Maulvi Debi, Yoga Tegar Ardi Denny Adhinugroho Suciptoi Dhamang Budi Cahyono Dirga Asmara Putra Diva Hestrada Rizki Pradiga Djoko Susilo Adhy Eko Muliawan Satrio, Eko Muliawan Esti Santoso Falah, Fajrul Fateh BENDAHMANE Gunarto Gunarto Hakiim, Chevy Helmi Hermin Poedjiastoeti Hermin Poedjiastoeti Heru Sulistyo Ignatius Sudarsono Ija, Lulu Isnaini Imam  Wahyudi Istighfah, Jafifah Mega Nur Jonathan PLANCHOT Jorge Jansen Juny Andry Sulistyo Kartono Wibowo Kartono Wibowo, Kartono Khakim, Ahmad Nur Kusumadewi, Adlina Linda Puspasari M Martomo Maxime LENOIR Mayla, Hana Aulia Aqidathul Moch Faiqun Ni’am Moh. Faiqun Ni’am Muhammad Abdul Khalim Muhammad Afif Ridwan Muhammad Zahran Fakhri Mukmin, Niki Afidah Muliawan, Eko Nahdatunnisa, Nahdatunnisa Ni'am, Moh Faiqun Niam, Moh Faiqun Octaviano, Bagas Pentenga, Tom Joy Perdana, Haris Athiya Prabowo Setiyawan Prasetyo, Adil Farhan Pratama, Daffa Aditya Pratikso Pratikso Pujianto, Ahmad Rachmat Mudiyono Rachmat Mudiyono, Rachmat Rhamadhan, Bintang Fajri Rick Heikoop Rifqi Brilyant Arief Rizal Arif Setiawan Rusmiyanto, Dedy S Imam Wahyudi S. Imam Wahyudi S. Imam Wahyudi Saifullah Candra Sulistiyo samsul arifin Saputri, Pungky Lela Sayfuddin, S. Sayyidah, Clara Najibatus Senoputro, Rifqy Anggoro Slamet Imam Wahyudi Slamet Imam Wahyudi, Slamet Imam Son Haji Sri Anik, Sri Sunarna Sunarna Suwandrianto, Dedik Tahir, M. Arzal Turrohmah, Annisa Ulum, Muhammad Miftakhul Utami, Maharani Mega Wahyudi, Rahmatia Sarah Wanti, Novita Rizka Wawan Setiawan Wibowo, Ardi Yonamastuti, Ervina Zahra, Sabila Zainal Alim Adiwijaya, Zainal Alim