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All Journal Jurnal Rekayasa Mesin Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Jurnal Teknik Sipil BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil IJEMS (Indonesian Journal of Environmental Management and Sustainability) International Journal of Humanities Education and Social Sciences Jurnal Teknik Sipil
Betty Susanti, Betty
Prodi Teknik Sipil, Fakultas Teknik Sipil dan Lingkungan, Institut Teknologi Bandung, Jl. Ganesa No.10 Bandung.
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Isu Strategis pada Pengadaan Pengusahaan Jalan Tol dalam Kerjasama Pemerintah dan Swasta Wirahadikusumah, Reini D.; Sapitri, Sapitri; Susanti, Betty; Soemardi, Biemo W
Jurnal Teknik Sipil Vol 20, No 3 (2013)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.818 KB)

Abstract

Abstrak. Studi mengenai permasalahan terkait investasi jalan tol telah banyak dilakukan, namun kajian ini fokus pada tahap pengadaan pengusahaan jalan tol. Berdasarkan studi literatur  teridentifikasi delapan isu pada tahap tersebut yaitu: i) proses pengadaan, ii). penilaian prakualifikasi dan seleksi, iii). metode pemberian konsesi, iv). kontrak konsesi, v). pengadaan tanah, vi). penentuan tarif, vii). permasalahan investasi, dan viii). aspek legal. Selanjutnya, dilakukan wawancara terstruktur dengan para pelaku yaitu dengan BPJT sebagai perwakilan pemerintah, dengantiga BUJT, dan dengan wakil dari Asosiasi Jalan Tol. Pada wawancara didiskusikan dan diperoleh penajaman pemahaman terhadap delapan aspek pengadaan pengusahaan jalan tol. Di samping masalah klasik pembebasan lahan, kajian ini telah mengidentifikasi potensi perbaikan pada tahap pengadaan pengusahaan jalan tol. Waktu lelang dapat dipersingkat dengan memperbaiki proses penyusunan dokumen lelang. Di samping itu, perlu dikaji bobot penilaian aspek finansial/teknis yang dapat meningkatkan keseimbangan antara kepentingan investor dan pemerintah. Penentuan tarif tol diharapkan dapat mencakup pertimbangan risiko utama secara lebih terukur. Terdapat kebutuhan dari investor untuk mendapatkan kepastian ketentuan terkait risiko-risiko utama agar diatur dengan lebih spesifik dan kontrak konsesi. Kajian ini juga mengindikasikan bahwa berbagai upaya pemerintah (diantaranya dalam rangka pembebasan lahan melalui dana bergulir BLU) dianggap oleh para BUJT sebagai suatu kemajuan, namun implementasi penegakan aspek legal masih belum optimal.Abstract. Challenges in toll road investments have been explored in numerous studies; this paper focuses on the issues during procurement stage of investors. Based on initial study, eight issues related to procurement were identified, i.e., i). the process, ii). the evaluation on prequalification and selection stages, iii) the method of concession award, iv). the contract, v). the land acquisition, vi). the calculation of initial tariff, vii). the requirement for investments, and viii). legal/law enforcement. These issues were then confirmed to the relevant parties: the toll road authority (i.e., BPJT), three major investors, and the association of toll road investors (i.e. ATI). In-depth interviews with representatives of these stakeholders were conducted to gain more substantial resolution on the eight issues of procurement. While investors agree that the procurement controlled by the toll road authority has improved, the solution to the classic problem of land acuisitions is still ineffective. The procurement process is taking too long, risking inflating construction costs. The much higher weighting of financial aspect to technical aspect used bid in evaluation is critized. Investors believe that tariff calculation should reflect better risk allocation and the concession contract should be more unbiased in order to attract wider investments much needed for Indonesian toll road sector.
KERANGKA PENILAIAN LIFE-CYCLE COST UNTUK PROYEK PEMELIHARAAN JALAN NASIONAL MENGGUNAKAN KONTRAK BERBASIS KINERJA Susanti, Betty; Wirahadikusumah, Reini D.
Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Vol 2 No 1 (2015): Prosiding Forum Studi Transportasi antar Perguruan Tinggi
Publisher : FSTPT Indonesia

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Abstract

Performance Based Contract (PBC) is one strategy to improve the effectiveness of road maintenance. PBC recently applied in Indonesia in 2011 and driven by Performance-Based Budgeting system. Through this budgeting system, expenditures for national road maintenance projects should be carried out as efficiently as possible and provide a long service life. But the national road agency still do not have an instrument that can be used to assess the efficiency of road maintenance costs for the project which will be delivered using PBC approach. Appropriate method used to assess the life cycle cost (LCC) efficiency of an infrastructure asset is using Life Cycle Cost Analysis (LCCA).This study aims to develop an assessment framework to specifically assess LCC for road maintenance project which will be contracted usingPBC schemes. LCC assessment framework generated in this study takes into account the road agencies and road users cost, with input variables consist of road design, LCCA analysis period, the road performance prediction, and the road maintenance strategies.
The Correlation Analysis of Maintenance Costs to Sei Siulak Deras Irrigation Network Infrastructure Performance Dhana, Frans; Putranto, Dinar Dwi Anugerah; Susanti, Betty
Indonesian Journal of Environmental Management and Sustainability Vol. 3 No. 2 (2019): June
Publisher : Research Centre of Inorganic Materials and Complexs

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (786.771 KB) | DOI: 10.26554/ijems.2019.3.2.71-74

Abstract

Sei Siulak Deras Irrigation Area is one of the Irrigation Areas located in Kerinci Regency based on the decision of Dinas Pekerjaan Umum dan Perumahan Rakyat (PUPR) regulations No.12/PRT/M/2015 concerning criteria and estabishment of Irrigation Area status with an area of 5,801 Ha. The authority for operational and maintenance implementation is handled by the Dinas PUPR of Jambi Province ( RTRW of Jambi Province, 2013). The performance of the Sei Siulak Deras irrigation network infrastructure is inseparable from the available maintenance budget, for this reason, it is necessary to conduct a study that analyzes the relationship between routine maintenance costs for the performance of irrigation network infrastructure in the Sei Siulak Deras irrrigation area of Kerinci District, Jambi Province. In this study an examination of the existing conditions of irrigation networks involving 1 observer and 6 irrigation workers, the irrigation network inspection using the standards issued by the Operation and Maintenance Agency of the Dinas PUPR of Jambi Province. From the results of the correlation analysis the cost of routine maintenance on the performance of irrigation network infrastructure is 0.9, this indicates a strong relationship between the two variables. While the maintenance budget allocated by the government to the maintenance of irrigation network infrastructure is very lacking, amounting to IDR 806,081,000 from the budget for the maintenance of irrigation network infrastructure of IDR 3,580,984,372.57.
Studi Kelayakan Investasi Batching Plant menggunakan Fly Ash sebagai Pengganti Semen di Kota Palembang Dwi Utama, Hakim Abdurrahim; Susanti, Betty; Saloma, Saloma
Jurnal Rekayasa Mesin Vol. 24 No. 1 (2024): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v24i1.516

Abstract

Cement processing increases CO2 pollution by up to 6%, giving rise to innovation in using fly ash because it can be used as an additive material for good quality concrete. Concrete production using a batching plant requires large investment costs. This research aims to analyze the feasibility of financial investment to build a batching plant that processes concrete mixed with fly ash and compare it with conventional concrete without fly ash in Palembang City. The study shows the NPV>0, IRR>9%, and BCR>1, which means these two investments are feasible. However, the payback period for conventional concrete is 3 years while concrete with fly ash is 3.5 years. BEP for conventional concrete and fly ash concrete reached the break-even point in the 8th year. In the 10th year of fly ash concrete production, there was a significant surplus. The environmental aspect shows that concrete waste using fly ash is safe because it can reduce cement use by up to 55%. The research results show that adding fly ash reduces raw material costs. This investment is declared feasible from a financial aspect because it has the potential to obtain benefits.
Comparative Analysis of Concrete and Reinforcement Work Volume Using Building Information Modelling Support Software Hasbi, Edlin Al Khuzaifah; Susanti, Betty; Adhitya, Bimo Brata
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 1 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (January 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i1.10152

Abstract

The era of the 4.0 revolution has four principles consisting of interconnection, information transparency, technical assistance, and decentralized decision-making. Four principles can be the guidelines for the Building Information Modelling (BIM) system. Government building projects have rules that stipulate that the BIM system must be applied in every construction project. The purpose of this study is to compare the volume of plan and realization work from contractors with conventional methods with plan and realization modeling on pilecap, column, and beam work for concrete and reinforcing work. The method used in this study is to make concrete and reinforcing modeling using Glodon Cubicost TAS and TRB software and use comparative analysis for each work volume result from conventional calculations and BIM modeling results. The data needed consists of general building data, plan drawing data and realization, as well as calculation of the volume of concrete and reinforcement. The results of the study show that there is a varied percentage difference between the data from the contractor and the modeling made, both plans and realization. The use of this software is considered effective if it has been used since the beginning of the construction project, because it can reduce errors and improve the integration between RAB and plan drawings as well as RAP and As Built Drawing.
Comparative Analysis of Building Structure Work Cost Estimation with BIM Construction Approach Case Study: Construction Project of Main Lecture Building of P4T Flagship Program of Empat Lawang Regency Pramana, I Putu Leo; Susanti, Betty; Adhitya, Bimo Brata
International Journal Of Humanities Education and Social Sciences (IJHESS) Vol 4 No 3 (2024): IJHESS DECEMBER 2024
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijhess.v4i3.1378

Abstract

Volume estimation and Bill of Quantities (BOQ) are crucial processes in construction planning. Currently, volume and BOQ calculations are still done manually by calculating the volume of each component in the working drawings. This process is time-consuming and prone to human error. One way to improve efficiency is to implement Building Information Modeling (BIM) in volume estimation and BOQ calculation to enhance work effectiveness. Autodesk Revit is one software that can assist in 3D modeling and accurate volume calculation. This research discusses how BIM can aid in the design volume calculation process and BOQ planning for the Main Lecture Hall building within the Integrated Agricultural Research and Development Center (P4T). Compared to conventional methods, the results show that implementing BIM on this project has provided significant benefits in terms of efficiency, increased calculation accuracy, material usage, and cost savings. With an optimization of concrete material usage by approximately 1,35% and reinforcement volume by approximately 2.11%, and a cost reduction of 0,985%, BIM has proven to provide significant added value to the project.
IDENTIFIKASI RISIKO KRITIS YANG MEMENGARUHI ASPEK FINANSIAL PROYEK KPBU JALAN TOL Putri, Fahira Rhomianti; Susanti, Betty; Toyfur, Mona Foralisa
JURNAL TEKNIK SIPIL Vol 12, No 1 (2023): Volume 12 Nomor 1 Mei 2023
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v12i1.30332

Abstract

The Public Private Partnership (PPP) is an alternative option to overcome for Limited funding in meeting the financing needs for the provision of toll road infrastructure so that the project can still be carried. However, infrastructure projects with PPP schemes require large investments and a relatively long concession period, thus allowing risk uncertainty to arise as a result of decisions made during the project to minimize the effect of risk on the financial aspects of the project. This study was aimed at identifying critical risks that affect the financial aspects of toll road PPP projects. Critical risk is defined as a unique risk and/or has differences from other risks that are reviewed in certain aspects. The case study was conducted on the Trans Sumatra toll road project in South Sumatra. Quantitative data (questionnaire survey) and qualitative data (interview) were collected from toll-road private sector. The results of the study identified thirteen critical risks of the toll road project, namely the risks of unavailability of land, problems related to contract documents, inaccurate data assumptions in the feasibility study, geographical conditions, delay in work progress / incompleted on time, design errors that causing addendums/ constructions modification, force majeure, extreme weather, delay in government approval, maintenance on a large scale / more than the estimated coverage and resulting in additional costs, lack of financial resources, inability to pay debts resulting from insufficient project revenue streams and delay in financial closing due to insufficient equity contributionKeywords: Critical Risk Analysis, Financial Aspects, Toll Road, PPP, Trans SumateraSkema Kerja sama Pemerintah Badan Usaha (KPBU) merupakan salah satu skema kerja sama yang banyak digunakan untuk mengatasi keterbatasan pendanaan dalam memenuhi kebutuhan pembiayaan penyediaan infrastruktur jalan tol agar proyek tetap dapat dilakukan. Permasalahannya proyek infrastruktur dengan skema KPBU memiliki nilai investasi yang besar dan masa konsesi yang relatif panjang, sehingga dapat menyebabkan ketidakpastian risiko timbul akibat dari pengambilan keputusan yang dilakukan selama proyek berlangsung. Identifikasi risiko pada proyek konstruksi penting dilakukan pada awal proyek dibangun agar dapat meminimalisir pengaruh risiko terhadap aspek finansial proyek. Penelitian ini bertujuan untuk mengidentifikasi risiko kritis yang memengaruhi aspek finansial proyek KPBU jalan tol. Risiko kritis didefinisikan sebagai risiko unik dan/atau memiliki perbedaan terhadap risiko lainnya yang ditinjau pada aspek tertentu. Studi kasus dilakukan pada proyek jalan tol trans Sumatera di Wilayah Sumatera Selatan. Pengumpulan data kuantitatif (survei kuesioner) dan data kualitatif (wawancara) dilakukan kepada badan usaha ruas jalan tol tersebut. Hasil analisis teridentifikasi tiga belas risiko kritis yang memengaruhi aspek finansial proyek jalan tol, yaitu risiko keterlambatan persetujuan dari pemerintah, pemeliharaan secara besar-besaran, kekurangan sumber daya keuangan, tidak mampu membayar hutang akibat dari aliran pendapatan proyek yang tidak mencukupi, penundaan penutupan keuangan, tidak tersedianya lahan, kondisi geografis, keterlambatan dalam progres pekerjaan, kesalahan desain, force majeure, kondisi cuaca, permasalahan terkait dokumen kontrak dan kesalahan asumsi data pada tahap studi kelayakan.Kata kunci: Analisis Risiko Kritis, Aspek Finansial, Jalan Tol, KPBU, Trans Sumatera
Co-Authors Adhitya, Bimo Brata Biemo W Soemardi, Biemo W Dhana, Frans Dinar Dwi Anugerah Putranto Dwi Utama, Hakim Abdurrahim Hasbi, Edlin Al Khuzaifah Heni Fitriani Mona Foralisa Toyfur, Mona Foralisa Pramana, I Putu Leo Prasetyo, Dody Eko Putri, Fahira Rhomianti Reini D. Wirahadikusumah, Reini D. Saloma Sapitri Sapitri, Sapitri