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Alfiansyah, Achmad Dzulfiqar
Universitas Pembangunan Nasional Veteran Jawa Timur
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Transportation

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KAJIAN JUMLAH ARMADA ANGKUTAN KOTA MALANG BERDASARKAN SPM 2015 ( STUDI KASUS: TRAYEK AH, LDH, ADL ) Widyatami, Filki Suri; Alfiansyah, Achmad Dzulfiqar; Sulistio, Harnen; Wicaksono, Achmad
Jurnal Mahasiswa Jurusan Teknik Sipil Vol 1, No 2 (2016)
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.271 KB)

Abstract

Angkutan kota di Malang sudah ada sejak tahun 1980an. Angkutan kota saat itu sebagai andalan masyarakat kota Malang untuk berpindah dari satu tempat ke tempat lainnya. Tetapi semanjak mudahnya membeli kendaraan pribadi dan murahnya harga kendaraan pribadi yang ada di pasaran membuat angkutan kota Malang jarang peminat. Masyarakat Kota Malang lebih memilih naik kendaraan pribadi untuk berpindah dari satu tempat ke tempat lainnya. Hal tersebut menyebabkan jumlah armada angkutan kota Malang saat ini tidak efisien.Perlu dilakukan kajian mengenai jumlah armada yang ideal.Terdapat dua analisis pada kajian ini, analisis pertama untuk mengetahui tingkat pelayanan angkutan umum Kota Malang berdasarkan SPM 2015 menggunakan metode Importance Performance Analysis (IPA). Analisis kedua untuk mengetahui jumlah armada optimum menggunakan dua metode yaitu Load Factor dan Break Even Point. Untuk analisis pelayanan didapatkan jumlah responden sebanyak 68 reponden untuk tiap trayek, dan penyebaran kuisioner dilakukan di dalam angkutan dan diluar angkutan. Hasil kajian menunjukkan kinerja pelayanan angkutan kota Malang trayek AH, LDH, dan ADL berdasarkan SPM tahun 2015 di dapatkan ada beberapa aspek yang berada di prioritas utama dan kinerja pelayanan angkutan umum yang rendah yaitu Sopir mengangkut penumpang tidak melebihi kapasitas, larangan merokok bagi penumpang dan sopir dalam kendaraan, Adanya prioritas untuk penyandang cacat, manusia usia lanjut, anak-anak, dan wanita hamil, dan Adanya informasi tentang trayek yang dilalui. Pada analisis jumlah armada didapatkan jumlah armada dengan metode Load Factor sebesar 132 armada untuk trayek AH, 85 armada untuk trayek LDH dan 75 armada untuk trayek ADL. Sedangkan jumlah armada dengan metode Break Even Point sebesar 237 armada untuk trayek AH, 130 armada untuk trayek LDH, dan 105 armada untuk trayek ADL. Yang lebih efisien dari penentuan jumlah armada diantara metode Load Factor dan Break Even Point adalah dengan Load Factor. Untuk optimasi jumlah armada angkutan umum Kota Malang dapat menggunakan cara membagi kerja jumlah armada dengan beberapa shift kerja. Kata Kunci : Angkutan, Jumlah Armada, Kinerja Operasi, Metode Break Even Point, Metode Importance Performance Analysis
Kajian Investasi Pembangunan Jalan Tol Menggunakan Dana Haji (Studi Kasus: Jalan Tol Gempol - Pandaan) Achmad Dzulfiqar Alfiansyah; Rudy Hermawan Karsaman; Harun Al-Rasyid
Jurnal Teknik Sipil Vol 28 No 1 (2021): Jurnal Teknik Sipil
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2021.28.1.7

Abstract

Abstrak Pendanaan jalan tol di Indonesia dapat berasal dari dana pemerintah, swasta ataupun sumber lain. Salah satu alternatifnya adalah dengan sistem syariah yang didasarkan pada bagi hasil keuntungan dan resiko sesuai dengan presentase modal pinjaman yang diberikan. Pemerintah Indonesia telah berencana menggunakan dana haji sebagai modal investasi pembangunan infrastruktur, salah satunya pembangunan jalan tol. Namun hal ini menimbulkan protes dari masyarakat sebagai pemilik dana haji karena langkah tersebut dinilai berisiko tinggi. Sebagai hasil analisis kelayakan finansial diperoleh bahwa skema dana haji memiliki kelayakan investasi yang paling baik dibandingkan skema konvensional dan skema bank syariah berdasarkan parameter NPV, BCR, Payback Period, IRR, ROI, dan ROE dikarenakan tingkat suku bunga pada konvensional lebih tinggi dibandingkan skema syariah. Skema dana haji lebih baik dibandingkan skema bank syariah disebabkan cara menghitung bagi hasil skema dana haji menghasilkan nilai yang lebih kecil dibandingkan pinjaman bank syariah. Dana haji layak secara finansial dan dapat diterapkan pada pembiayaan jalan tol di Indonesia. Namun perlu adanya perundang- undangan yang jelas dan menjamin penggunaan dana haji aman dan bermanfaat bagi pemilik dana haji. Kata-kata Kunci: Jalan tol, dana haji, investasi, kelayakan finansial, tarif tol, optimasi. Abstract Toll road funding in Indonesia could come from the government, private sector or other sources. One of funding alternative is the sharia system, which based on profit and risk sharing according to the percentage of loan capital provided. The Indonesian government has planned to use Hajj fund as investment capital for construction of toll road. However, this plan caused protests from the society as an owner of the Hajj fund because it was considered as a high-risk investment. The result of this study, the Hajj fund scheme have the best investment feasibility more than conventional and sharia bank scheme based on NPV, BCR, Payback Period, IRR, ROI, and ROE due to higher conventional interest rate than the sharia scheme. The hajj fund scheme is better than the Islamic bank scheme because the method of calculating the profit share of the Hajj fund scheme produces smaller value than the Islamic bank scheme. Hajj fund scheme has lower investment risk than conventional and islamic bank loan. Hajj fund is financially feasible and thus is applicable to financing toll road in Indonesia.. However, it is imperative to establish a clear regulation that can guarantee for their owners that the Hajj fund is safe and beneficial. Keywords: Toll roads, hajj funds, investment, financial feasibility, toll rates, optimization.
Kajian Jumlah Armada Angkutan Kota Malang Berdasarkan SPM 2015 ( Studi Kasus: Trayek AH, LDH, ADL ) Filki Suri Widyatami; Achmad Dzulfiqar Alfiansyah; Harnen Sulistio; Achmad Wicaksono
IPTEK Journal of Proceedings Series No 5 (2017): Simposium I Jaringan Perguruan Tinggi untuk Pembangunan Infrastruktur Indonesia (2016)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i5.3120

Abstract

Angkutan kota di Malang sudah ada sejak ada sejak tahun 1980an. Angkutan kota saat itu sebagai andalan masyarakat kota Malang untuk berpindah dari satu tempat ke tempat lainnya. Tetapi semanjak mudahnya membeli kendaraan pribadi dan murahnya harga kendaraan pribadi yang ada di pasaran membuat angkutan kota Malang jarang peminat. Masyarakat Kota Malang lebih memilih naik kendaraan pribadi untuk berpindah dari satu tempat ke tempat lainnya. Hal tersebut menyebabkan jumlah armada angkutan kota Malang saat ini tidak efisien.Perlu dilakukan kajian mengenai jumlah armada yang ideal.Terdapat dua analisis pada kajian ini, analisis pertama untuk mengetahui tingkat pelayanan angkutan umum Kota Malang berdasarkan SPM 2015 menggunakan metode Importance Performance Analysis (IPA). Analisis kedua untuk mengetahui jumlah armada optimum menggunakan dua metode yaitu Load Factor dan Break Even Point. Untuk analisis pelayanan didapatkan jumlah responden sebanyak 68 reponden untuk tiap trayek, dan penyebaran kuisioner dilakukan di dalam angkutan dan diluar angkutan. Hasil kajian menunjukkan kinerja pelayanan angkutan kota Malang trayek AH, LDH, dan ADL berdasarkan SPM tahun 2015 di dapatkan ada beberapa aspek yang berada di prioritas utama dan kinerja pelayanan angkutan umum yang rendah yaitu Sopir mengangkut penumpang tidak melebihi kapasitas, larangan merokok bagi penumpang dan sopir dalam kendaraan, Adanya prioritas untuk penyandang cacat, manusia usia lanjut, anak-anak, dan wanita hamil, dan Adanya informasi tentang trayek yang dilalui. Pada analisis jumlah armada didapatkan jumlah armada dengan metode Load Factor sebesar 132 armada untuk trayek AH, 85 armada untuk trayek LDH dan 75 armada untuk trayek ADL. Sedangkan jumlah armada dengan metode Break Even Point sebesar 237 armada untuk trayek AH, 130 armada untuk trayek LDH, dan 105 armada untuk trayek ADL. Yang lebih efisien dari penentuan jumlah armada diantara metode Load Factor dan Break Even Point adalah dengan Load Factor. Untuk optimasi jumlah armada angkutan umum Kota Malang dapat menggunakan cara membagi kerja jumlah armada dengan beberapa shift kerja.
Daily Performance Profile Comparison Test of Monocrystalline and Poly-Crystalline Solar Panels Primasari Cahya Wardhani; Nur Aini Fauziyah; Aulia Dewi Fatikasari; Bagas Aryaseta; Achmad Dzulfiqar Alfiansyah
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2721

Abstract

The use of electrical energy for each region is increasing every year, along with the community’s increasing needs. Surabaya, a metropolis in Indonesia, is listed as the third-largest user of electrical energy in Indonesia. The community has widely used solar panels as new renewable energy, such as in the construction of traffic lights, street lighting, and several households. This study aims to determine the daily performance profile of the daily value of voltage, current, and energy stored from solar panels with different types of solar panels, namely, using polycrystalline and monocrystalline solar panels mounted on the roof of the house. Data retrieval was carried out with an interval of data collection every hour when the sun is high enough until the afternoon (06:00 WIB – 18:00 WIB). The results showed that the average voltage value for monocrystalline solar panels was 21.09 V and polycrystalline solar panels were 19.32 V. In addition, the output current values for monocrystalline and polycrystalline solar panels were 0.903 A and 0.27 A. Meanwhile, the monocrystalline output power value was 19.72 W and polycrystalline 5.43 W. Based on the research data, it can be concluded that the energy stored in the battery and the efficiency value for each monocrystalline solar panel produces a higher output value than that produced by polycrystalline solar panels, 12,98%, and 4.04%. However, polycrystalline solar panels that produce a lower and stable electric current can extend the lifetime of the battery where the electric charge is stored from the solar panel.
Single Reinforced Concrete Design of Simple Beam with Simple Formulation Method Nia Dwi Puspitasari; Achmad Dzulfiqar Alfiansyah
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2725

Abstract

A quick and practical method of designing a single-layer reinforced concrete beam will be analyzed. This article provides a new simple formulation to design simple beam-reinforced concrete. The dimension and reinforcement ratio can be generated by using the formulation. The variables that must be known at using the formulation are the concrete strength (f`c), the ultimate uniform load (qu), the yield strength of steel (fy), and the span length of the simple beam (L). There are two main parameters obtained from the formulation including the cross-sectional dimensions (W and H) and reinforcement ratios (?). Moreover, the required diameter and amount of steel reinforcement can be converted from the result. The beam dimensions and reinforcement ratio results obtained from this design method are verified by mathematical calculations based on the SNI 03-2847-2019. Designing a single-layer reinforced concrete beam using the simple formulation method provides high precision.
Road Performance Analysis Using PCE MC Value 0.17 on Rungkut Madya Road Maharani Putri Dewanty; Nita Jesika Panjaitan; Shafira Amalia Putri; Mawinda Oktrify Awati; Achmad Dzulfiqar Alfiansyah
Journal of Civil Engineering Science and Technology (CI-TECH) Vol. 3 No. 2 (2022): October 2022
Publisher : PROGRAM STUDI TEKNIK SIPIL - UPN "VETERAN" JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ci-tech.v3i2.65

Abstract

Passenger Car Equivalent (PCE) is a conversion factor from various types of vehicles into passenger car units (pc). The PCE value in the 2014 Indonesian Road Capacity Guidelines called PKJI 2014 has a long period with the present. The purpose of this study is to prove that there is a change in current traffic characteristics with the traffic characteristics described in the PKJI 2014. To prove this, the study was conducted by comparing road performance using the PCE MC value according to the PKJI 2014 with research that has been done previously with the results of PCE MC using the modified average headway time method showing 0.17 results. The location of this research was carried out on the Rungkut Madya road (2/2 UD), Surabaya City, East Java, Indonesia. The results obtained from this study are the use of PCE MC according to the PKJI 2014, resulting in a theoretical speed value close to the actual speed value compared to using modified PCE MC. So that the calculation of the performance of the Rungkut Madya road or other roads with similar characteristics does not require modification of the PCE MC value.
The Effect of Increasing Vehicle Volume on Some Roads in Surabaya Post Pandemic Ibnu Sholichin; Achmad Dzulfiqar Alfiansyah
Journal of Civil Engineering Science and Technology (CI-TECH) Vol. 3 No. 2 (2022): October 2022
Publisher : PROGRAM STUDI TEKNIK SIPIL - UPN "VETERAN" JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ci-tech.v3i2.66

Abstract

Population growth and economic development in Indonesia affect the increase in the volume of vehicles. In the era of the pandemic, Indonesia's population growth has increased, so the need for vehicles also increases. The increase in the volume of vehicles, causes congestion in various areas. The WFH (Work From Home) policy, due to the Covid-19 pandemic, has reduced the use of vehicles in traffic. Two years after the pandemic, in 2022, the volume of vehicles in traffic will be higher due to activities that have started to return to normal. The abolition of the WFH (Work From Home) policy has resulted in school offices, tourist attractions, and other infrastructure making the activities of the Indonesian people and economy rise slowly. Although the economy in Indonesia has not increased significantly or can be called unstable, the purchasing power of motorized vehicles has increased. From the results of the research carried out above, it is known that the capacity of Darmo road and Pemuda road has increased the DS value (degree of saturation) in the post-pandemic period compared to the pandemic conditions during the PSBB period. The increasing community activities caused the increased DS value (degree of saturation). This resulted in traffic on Jalan Darmo, Pemuda, and Ahmad Yani becoming more congested than during the pandemic.
Evaluasi Kinerja Layanan Jalan Tol Surabaya-Gempol Berdasarkan Persepsi Pengguna Achmad Dzulfiqar Alfiansyah; Aulia Dewi Fatikasari; Primasari Cahya Wardhani; Hendi Bowoputro
AGREGAT Vol 8 No 1 (2023)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ag.v8i1.17772

Abstract

Jalan Tol Surabaya-Gempol, salah satu ruas jalan tol yang memiliki peran penting dalam menunjang kegiatan perekonomian di Jawa Timur. Peran penting tersebut perlu diimbangi dengan penyediaan pelayanan yang baik terhadap pengguna jalan tol. Pemenuhan Standar Pelayanan Minimal (SPM) perlu melibatkan penilaian pengguna jalan tol agar pemenuhan SPM tidak hanya dari segi teknis melainkan juga dapat memenuhi ekspektasi pengguna jalan tol. Penelitian ini digunakan untuk mengetahui kinerja layanan Jalan Tol Surabaya-Gempol berdasarkan persepsi pengguna jalan tol terhadap indikator yang telah ditetapkan pada SPM jalan tol. Dalam penelitian ini menggunakan metode Importance Performance Analysis (IPA). Berdasarkan hasil analisis metode IPA, kinerja pelayanan jalan tol Surabaya-Gempol berdasarkan persepsi pengguna jalan tol menunjukkan tingkat kepuasan rata-rata sebesar 3,01 dan tingkat kepentingan rata-rata sebesar 3,29. Selanjutnya, berdasarkan pemetaan kuadran pada matriks IPA didapatkan indikator-indikator yang masuk dalam prioritas peningkatan pelayanan. Peningkatan pelayanan pada indikator yang masuk dalam prioritas diharapkan dapat menigkatkan Jalan Tol Surabaya-Gempol berdasarkan persepsi pengguna jalan tol.
Stress Analysis of PCI-Girder Precast Concrete Segmental Bridge Based on SNI 1725:2016 (Case Study: Konaweha River Bridges, Southeast Sulawesi) Nia Dwi Puspitasari; Wahyu Kartini; Achmad Dzulfiqar Alfiansyah
Journal of Civil Engineering, Planning and Design Vol 2, No 1 (2023): Journal of Civil Engineering Planning and Design
Publisher : Faculty of Civil Engeneering and Planning - ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jcepd.2023.v2i1.4530

Abstract

A prestressed bridge is an alternative way of structural design because of the ease of procurement and installation. For long-span bridges, prestressed beams only require minimum cross-sectional dimensions along with reliable performance. A prestressed concrete beam is always made in several segments to facilitate delivery. It is necessary to analyse and control the stress that occurs due to the external load and the loss of prestress. This study aims to provide a detailed stress analysis of PCI-girder precast concrete segmental bridges, considering the provisions and guidelines specified in SNI 1725:2016. Four stages of construction will be controlled. Namely at the transfer stage, the after-loss of the prestressed stage, the composite beam stage, and the service stage. The tensile and compressive stress analyses will be carried out on the upper side of the bridge surface, the upper side of the girder, and the bottom. If tensile stress occurs, it indicates that the girder is not capable of withstanding the applied load, and additional anchorages need to be installed at each joint between segments. The result obtained from the stress analysis conducted in this study is that no tensile stress is found in any critical sections of the girder. The stress that occurs has fulfilled the design capacity, without any tensile stress occurring in the bridge.
THE INFLUENCE OF TILT ANGLE ON THE DAILY PROFILE TOTAL ENERGY OF PHOTOVOLTAIC POLYCRYSTAL Bagas Aryaseta; Primasari Cahya Wardhani; Nur Aini Fauziyah; Achmad Dzulfiqar Alfiansyah; Syahrul Munir; Aulia Dewi Fatikasari; Nia Dwi Puspitasari
JURNAL PENA SAINS Vol 11, No 1 (2024): Jurnal Pena Sains
Publisher : Program Studi Pendidikan IPA, Fakultas Ilmu Pendidikan, Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jps.v11i1.19506

Abstract

This preliminary study aims to determine the daily profile of the power output generated from solar panels, with variations in the house’s roof angles of 15º, 0º, 15º. Tilt angle investigation expects to discover the impact of placing solar panels on the slope of the tile used on the house’s roof. The collecting data of this study was investigated the data of current and voltage every hour that produced by solar panel. Besides, this study also comparing the result of total energy output value for daily profile of solar panel during ten hour per day (start from 7 am to 5 pm). The results show that solar panels with an angle of -15º at 07:00 – 10:00 WIB have higher output voltage and current than other angle variations. At a tilt angle of 0º, the output voltage and current of the solar panel are higher at 11:00-14:00 WIB, while at a tilt angle of 15º in the afternoon. Based on observations, each solar panel with exposure for 10 hours obtained the total energy value for polycrystalline solar panels with a tilt angle of -15º of 258.44 Wh, solar panels with an angle of 0º obtained an energy value of 263.64 Wh, and a tilt angle of 15º obtained energy values 260.69 Wh. The photonic energy emitted for 10 hours is 2097.47 Wh. The energy efficiency value for each polycrystalline solar panel is 12.32% for the angle of -15º, the angle of 0º is 12.57%, and 12.43% for the angle of 15º. In conclusion, variations in the angle of the solar panels have significant effect on the voltage, current, and energy generated from polycrystalline solar panels in every hour. However, based on the data result the total energy exposure and the efficiency value for each variation angle has no significant different. Pyramid-shaped house roof construction has the advantage of increasing the value of the cross-sectional area of the tile, which has the opportunity to install wider-sized solar panels so that a greater value of electrical energy is obtained.
Co-Authors Achmad Wicaksono Aryaseta, Bagas Aulia Dewi Fatikasari Aulia Dewi Fatikasari Aulia Dewi Fatikasari Bagas Aryaseta Filki Suri Widyatami Harnen Sulistio Harnen Sulistio Harun Al Rasyid S. Lubis, Harun Al Rasyid S. Hendi Bowoputro Ibnu Sholichin Maharani Putri Dewanty Mawinda Oktrify Awati Nia Dwi Puspitasari Nita Jesika Panjaitan Nur Aini Fauziyah Nur Aini Fauziyah Rudy Hermawan Karsaman Shafira Amalia Putri Syahrul Munir Wahyu Kartini Wicaksono, Achmad Widyatami, Filki Suri