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All Journal Jurnal Teknik Sipil IKRA-ITH Teknologi Jurnal Sains dan Teknologi Inersia : Jurnal Teknik Sipil Devotion: Journal of Research and Community Service Indonesian Journal of Multidisciplinary Science Enrichment: Journal of Multidisciplinary Research and Development
Nurjaman, Hari Nugraha
Universitas Persada Indonesia-YAI
Humanities Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Public Health Social Sciences

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PUBLIC PRIVATE PARTNERSHIP PADA KONSERVASI DAN PEMBANGUNAN INFRASTRUKTUR PENGAMAN PANTAI; STUDI KASUS BALI Tukuboya, Midian Wahyu; Nurjaman, Hari Nugraha; Suryani, Fitri
IKRAITH-TEKNOLOGI Vol 2 No 1 (2018): IKRAITH-TEKNOLOGI Vol 2 Nomor `1 Bulan Maret 2018
Publisher : Fakultas Teknik Universitas Persada Indonesia YAI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (822.168 KB)

Abstract

Indonesia merupakan negara kepulauan dengan luas 3.374.668 Km2 yang terdiri dari 13.466 pulau, denganpanjang garis pantai sepanjang ± 99.093 km (Badan Informasi Geospasial, 2015). Identifikasikan kebutuhan danpotensi perbaikan pantai dari kerusakan erosi, dilakukan dengan menilai kerusakan dengan mengunakan variabelutama seperti kemunduran garis pantai serta menentukan prioritas penangan dengan memperhatikan nilaiekonomis kawasan tersebut. Kebutuhan dan skema pembiayaan, serta sumber Pendanaan dengan membuat modelpembiayaan ditentukan oleh cashflow untuk menyatakan kelayakan kegiatan investasi dalam penanganankerusakan maupun konservasi kawasan pantai dengan menggunakan analisis sensifitas didapat nilai IRR 29,62%dengan discount rate 12% dengan B/C ratio 1,98 pada kondisi kehihangan nilai benefit ±75%. Keterbatasanpendanaan untuk pencapaia target pembangunan infrastruktur yang ditetapkan dalam RPJMN tahun 2015–2019,adanya selisih pendanaan (funding gap) sehingga alternatif pembiayaan melalui Kerjasama PemerintahSwasta(KPS)/PublicPrivate Partnership (PPPs) dapat dilakukan dalam penyediaan infrastruktur. Penyediaaninfrastruktur sosial dalam bidang pariwisata pada kawasan pantai terbuka yang tidak memberlakukan tarif dapatmengunakan Pembayaran Ketersediaan layanan (Availability Payment), namun jika dapat menarik tarif untuksystem pantai tertutup maka skema DBMF (Desain, Build, Finance, Maintain) dapat sebagai alternatif pembiayaanperbaikan dan konservasi pantai khususnya pada pantai di Pulau Bali.
ANALISIS TEKNIS DAN EVALUASI KELAYAKAN PEMBANGUNAN JALAN PENGHUBUNG KABUPATEN KAUR-PROVINSI BENGKULU RUAS JALAN TANJUNG KEMUNING Syahrul Syahrul; Hari Nugraha Nurjaman; Fitri Suryani
Inersia: Jurnal Teknik Sipil Vol 8, No 2 (2016)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (191.279 KB) | DOI: 10.33369/ijts.8.2.25-40

Abstract

The purpose of this study was to evaluate the feasibility of the construction of feeder roads Kaur District-Bengkulu Province street section Tanjung Kemuning. Methods of data collection using the method of observation and documentation. Methods of data analysis using cost analysis which includes the costs of the project, saving the BOK (Vehicle Operation Costs), and travel time savings and economic feasibility analysis includes economic analysis and sensitivity analysis. The results showed that (1) the results of the technical analysis of road pavement structure includes (a) the type of road pavement construction consists of four (4) arrangement of layers, namely 1) the surface layer, thick 10 cm, layer forming material Crescent, 2) the base layer, thick 21 cm, broken gravel layer forming material which doused with liquid asphalt, 3)sub-base layer, thick 23 cm, layer-forming material mixtures of local soil with lime or portland cement, and 4) basic soil layer, thick 41 cm, layer-forming material local soil at the site of road construction projects are compacted; (b) the condition of the pavement include 1) the traffic planning and traffic growth rates, namely a) average growth rate of 4.5%, b) current peak hours is 48 SMP/day, c) LHR value, ie LHR at the beginning of the plan year is 1.200 SMP/day, d) value of LHRT, i.e LHR at the end of the plan for 1.948 SMP/day; 2) value of CBR is 2.423% and E of 36.345 Psi; 3) functional quantities of pavement systems include (a) value of Po is 4.0; (B) valu of Pt is 1.5; and (c) value of Pf is 2.0; 4) value of R is 95% and S is 0.35; and 5) value of SN is 3 cm, and (c) the strength of road construction are 1) value of s is 1.065, 2) value of d is 5 deflections, and 3) value of FK is 0.47% and (2) the analysis of costs consistof (a) the total project cost Rp.10.142.160.500,00, (b) savings BOK (Vehicle Operating Costs) of the three dominant types of vehicles passing through Tanjung Kemuning Street, ie passenger cars, truck/bus medium, and truck/bus large amount Rp.953.814.502,55 covering fixed costs and variable costs Rp.878.980.000,00 of Rp.74.834.502,55, and (c) saving travel time of 0.6hours. This means that with the construction of feeder roads Kaur District-Bengkulu province,road users can save travel time for 0.6 hours compared to pre-project or equal to Rp.572.288.701,53; (2) evaluation of the economic viability include (a) the economic analysis, the value of BCR with an interest rate of 10% at 1,490, the interest rate of 12% amounting to 1,487, and the rate of 15% at 1,482. All the BCR value greater than 1, NPV at 10% interest rate for Rp.5.068.189.644,36, interest rates on 12% of Rp.4.570.421.018,57, and a 15% interest rate for Rp.4.451.192.644,17 , and the value of EIRR of 15.41% and (b) the sensitivity analysis obtained values BC(Benefit-Cost) nothing is worth (-).
STRESS FACTORS OF LABOR CONSTRUCTION OF BUILDING CONSTRUCTION ON PERFORMANCE TIME AND COST Robin Supratman; Dwi Dinariana; Hari Nugraha Nurjaman; Arman Jayady; Fitri Suryani
Indonesian Journal of Multidisciplinary Science Vol. 1 No. 7 (2022): Indonesian Journal of Multidisciplinary Science
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1225.771 KB) | DOI: 10.55324/ijoms.v1i7.126

Abstract

Human resources are an important factor in the implementation of construction projects. This is because the role of human resources is very dominant where HR is the main driving force in construction project work, so the quality of human resources is a determining factor for the success of a project. The purpose of this study is to make a regression model equation that can be used to predict the stress factor of construction workers (consultants and contractors) of buildings on time and cost performance. This research method uses a survey, namely by distributing questionnaires to collect main data to obtain facts by taking samples from the population. The results showed that the stress factors for building construction workers (contractors) that affect time performance were that I was not confident with my work because I did not complete the task properly (X18) and there were no definite regulations from the company regarding the workforce career development process. work (X22).
Value Engineering Of Modern Formwork In Multi-Story Building Construction Case Study On The Construction Project Of The Brin Building Complex In Yogyakarta Dewangga, Rezha Tanu; Suryani, Fitri; Nurjaman, Hari Nugraha; Dinariana, Dwi
Devotion : Journal of Research and Community Service Vol. 5 No. 2 (2024): Devotion: Journal of Research and Community Service
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/devotion.v5i2.677

Abstract

Reinforced concrete is the most commonly used construction material in building construction in the 21st century. In its production, supportive instruments are needed to enhance both quality and economic aspects. Formwork, or shuttering, is a crucial factor in the casting and hardening of concrete. The subject of this research is wooden formwork and its alternatives, analyzed in terms of cost, quality, time, and convenience using the Value Engineering Job Plan analysis. In terms of cost, there is a cost savings of 8.88% for DUO polymer formwork compared to the conventional plywood method. The resulting surface quality of the concrete of this method has a average roughness of 3.492. The total duration of the work is 16.54791 days. The total value index obtained for the use of DUO polymer formwork is 98.99, for the plywood film formwork is 48.17, and for conventional plywood formwork is 0.00. Thus, in terms of value, the DUO polymer plastic formwork can be recommended as the best formwork method for multi-story building construction. Considering the advantages and disadvantages of this method, along with the benefits obtained, it would be even more beneficial on a larger construction scale.
Analisis Perbandingan Kinerja Seismik Struktur Bangunan Gedung Pracetak Sistem Ganda Beton Bertulang di Jakarta Dengan dan Tanpa Isolasi Dasar Fau, Martinus Nifotuho; Soemari, Herlien Dwiarti; Nurjaman, Hari Nugraha
Jurnal Teknik Sipil Vol 32 No 2 (2025): Jurnal Teknik Sipil - Edisi Agustus
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2024.32.2.1

Abstract

Abstrak Perkembangan dan pengaplikasian sistem struktur pracetak kinerja tinggi pada bangunan gedung beton bertulang dengan memanfaatkan pembentukan sendi plastis untuk mendisipasikan energi pada komponen struktur itu sendiri, telah banyak diproduksi secara lokal di Indonesia. Disisi lain terus ditemukannya sesar baru yang akan berpotensi terus meningkatkan seismisitas, serta kebutuhan untuk mendapatkan kinerja seismik struktur yang lebih baik untuk bangunan yang bernilai tinggi juga terus dibutuhkan. Oleh karena itu penggunaan sistem isolasi dasar menjadi salah satu inovasi yang dapat meningkatkan kinerja struktur bangunan pracetak. Pada penelitian ini akan difokuskan pada penggunaan isolasi dasar tipe Lead Rubber Bearing (LRB), dan model bangunan adalah sistem ganda beton bertulang 20 lantai, berlokasi di daerah gempa tinggi yaitu Jakarta dengan kelas situs tanah lunak dan berfungsi sebagai apartemen. Terlebih dahulu struktur dianalisis dengan pendekatan berbasis preskriptif yakni analisis linier elastik, dimana detail setiap elemen struktur akan mengikuti SNI 2847:2019 dan tahapan analisis juga mengikuti SNI 1726:2019 untuk pembebanan lateral gempa dan SNI 1727:2020 untuk beban gravitasinya, baik untuk struktur tumpuan terjepit maupun untuk sistem isolasi dasar. Dan pada analisis yang lebih detail akan menggunakan analisis berbasis kinerja dengan Non Linier Time History (NLTH) dan akan dibandingkan respons struktur dan kinerja dari kedua sistem struktur tersebut. Kata-kata Kunci: Struktur pracatek, isolasi dasar, Lead Rubber Bearing (LRB), Analisis Non Linear Time History (NLTH), Design Basis Earthquake (DBE), Maximum Considered Earthquake (MCE), kinerja struktur. Abstract The development and application of high-performance precast structural systems in reinforced concrete buildings by utilizing the formation of plastic joints to dissipate energy in the structural components themselves, have been widely produced locally in Indonesia. On the other hand, new faults continue to be found that will potentially continue to increase seismicity, and the need to obtain better seismic structural performance for high-value buildings also continues to be needed. Therefore, the use of a base isolation system is one of the innovations that can improve the performance of precast building structures. This study will focus on the use of Lead Rubber Bearing (LRB) type base isolation, and the building model is a 20-story reinforced concrete double system, located in a high earthquake area, namely Jakarta with a soft soil site class and functioning as an apartment. First, the structure is analyzed using a prescriptive-based approach, namely linear elastic analysis, where the details of each structural element will follow SNI 2847: 2019 and the analysis stages also follow SNI 1726: 2019 for lateral earthquake loading and SNI 1727: 2020 for gravity loads, both for the clamped support structure and for the base isolation system. And in a more detailed analysis, performance-based analysis with Non-Linear Time History (NLTH) will be used and the structural response and performance of the two system structures will be compared. Kata-kata Kunci: Precast structures, base isolation, Lead Rubber Bearing (LRB), Non Linear Time History (NLTH) Analysis, Design Basis Earthquake (DBE), Maximum Considered Earthquake (MCE), structural performance.
Risk Management in the PPP Scheme for the East Sumatra National Ring Road Preservation Project in Riau Province Papua, Munarlis; Jayady, Arman; Nurjaman, Hari Nugraha
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 7 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i7.478

Abstract

The East Sumatra Highway, particularly the Pekanbaru–Simpang Lago section in Pelalawan Regency, is a strategic route that supports national economic growth and is part of the National Road network, which experiences congestion due to heavily loaded vehicles. As the need for road infrastructure intensifies, the government faces limitations in the State Revenue and Expenditure Budget (APBN). Therefore, alternative financing mechanisms such as State Sharia Securities (SBSN) and the Government and Business Entity Cooperation (PPP) scheme are required. This study aims to identify and assess the risks in the East Sumatra National Road Preservation PPP Project using a type-1 questionnaire-based descriptive analysis approach. The research respondents consist of representatives from the Party in Charge of the Cooperation Project (PJPK) and the Implementing Business Entity (BUP). The results indicate that PJPK faces 63 risks, with the main classifications including location, design, construction, operations, revenue, political, financial, force majeure, sponsorship, interface, asset ownership, and strategy. Meanwhile, BUP faces 60 risks under similar classifications, except that location risks fall solely under the responsibility of PJPK. These findings highlight the importance of proportional risk sharing according to the authority and responsibilities of each party. This research contributes to the development of risk mitigation strategies and supports decision-making for PPP-based infrastructure project financing. For future research, the use of the fuzzy logic method is recommended to reinforce risk weight allocation and to broaden the respondent base from both parties, thereby producing more representative results.
Co-Authors Arman Jayady Dewangga, Rezha Tanu Dinariana, Dwi Dwi Dinariana Fau, Martinus Nifotuho Fitri Suryani Fitri Suryani Fitri Suryani Jayady, Arman Papua, Munarlis Robin Supratman Soemari, Herlien Dwiarti Syahrul Syahrul Tukuboya, Midian Wahyu