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Sekartadji, Ratih
Institut Teknologi Adhi Tama Surabaya
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Public Health Social Sciences Other

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Performance Evaluation of Urban Road Sections on The Taman - Sepanjang Highway MCA, Theresia; Sekartadji, Ratih; Putra, Kurnia Hadi; Kusumaningrum, Dewi; R, Rizki
Journal of Civil Engineering, Planning and Design Vol 3, No 1 (2024): May
Publisher : Faculty of Civil Engeneering and Planning - ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jcepd.2024.v3i1.5946

Abstract

munity activities which are dominated by shops, offices and education activities and are directly adjacent to dense residential communities. The volume of vehicles passing through this road is quite dense, such as motorbikes, light vehicles and heavy vehicles, plus side obstacles that disrupt the smooth flow of traffic, especially during peak hours. The method used for this research is the 1997 Indonesian Road Capacity Manual (MKJI) method and the main indicator is the degree of saturation (DS). The results of the analysis show that the performance of the Taman - Sepanjang Highway sections (Highway Kalijaten Segment and Ngelom Segment) in existing conditions does not meet the 1997 MKJI feasibility standards. The degree of saturation value for highway Kalijaten is 1.00 and highway Ngelom is 0.87. So both roads need to improve road performance. The alternatives are widening the road, the saturation degree (DS), widening the road and removing side obstacles, become a one-way road. By implementing those alternative, Taman - Sepanjang Highway was expected to meet degree of saturation by MKJI standard.
Analisis Tingkat Kepuasan Pelayanan Pengguna Bus Trans Jatim “Tribuana Tungga Dewi” Koridor II Rute Surabaya – Mojokerto Herlynawati, Vera; Agusdini, Theresia Maria Chandra; Putra, Kurnia Hadi; Sekartadji, Ratih
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2024: Menjembatani Energi Berkelanjutan dan Ekonomi Hijau melalui Transformasi Riset dan Teknologi T
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Cara mengurangi kemacetan Pemerintah Kota Surabaya saat ini berusaha meningkatkan kualitas pelayanan transportasi umum berbasis bus, dengan cara memfasilitasi pengguna transportasi dan mengganti sejumlah armada yang kurang layak yang menyebabkan kurangnya peminat dalam mengggunakan transportasi umum. Dinas Perhubungan Provinsi Jawa Timur pada 20 Agustus 2023 meresmikan armada baru sejumlah 22 bus rute Surabaya – Mojokerto, harapannya penambahan bus ini dapat mengurangi pengguna transportasi pribadi untuk mengurangi kemacetan. Pengguna Bus Trans Jatim memiliki peran yang sangat penting dalam menentukan kepuasan terhadap kualitas pelayanan bus. Tujuan dalam penelitian ini yaitu untuk mengetahui karakteristik penumpang dan untuk mengetahui tingkat kepuasan penumpang terhadap kualitas pelayanan Bus Trans Jatim. Metode pengolahan data menggunakan metode Customer Satisfaction Index (CSI) dan Importance Performance Analisys (IPA). Berdasarkan hasil analisis karakteristik penumpang dominan jenis kelamin perempuan dengan usia 18 – 28 tahun, tingkat pendidikan terakhir SMA, pekerjaan sebagai wiraswasta dengan pendapatan 2 juta rupiah dan tujuan perjalanan bekerja. Hasil analisis tingkat kepuasan dengan metode CSI didapatkan sebesar 80,96% dikategorikan pelanggan merasa puas. Hasil analisis metode IPA dengan Diagram Kartesius tersebar di kuadran II dan III. Berdasarkan analisis kuadran III tingkat kepuasan dan tingkat kepentingan rendah atau kurang memuasakan dan perlu ditingkatkan untuk keamanan dan kenyamanan pelanggan.
U-Turn Analysis on Road Performance by Dr. Ir. H. Soekarno Merr (Case Study: West and East Side U-Turn) MCA, Theresia; Kusumaningrum, Dewi; Sekartadji, Ratih; Agung, Dimas
Journal of Civil Engineering, Planning and Design Vol 1, No 2 (2022): November
Publisher : Faculty of Civil Engeneering and Planning - ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jcepd.2022.v1i2.3607

Abstract

Traffic is a system consisting of several key elements or a headway system. In the median plan, it also has a center opening or U-Turn, but the U-Turn facility does not completely solve these problems and conflicts because the turning vehicle itself does not completely solve them. This is the result of turning in the same direction as vehicles approaching or stopping in high and low-speed lanes. Some vehicles are unable to make smooth U-Turns, causing delays for both traffic directions or vice versa. This study aims to determine the traffic performance and performance of the U-Turn facility on Jl. Dr. Ir. Soekarno in the City of Surabaya using the MKJI methodology, 1997. From the results of this study, the peak hours for the south direction (A) are at 16.45-17.45, volume 3480. 6 vehicles per hour, DS (Degree of saturation)  0.73 with service level C, and south to north (B) at 16:45-17.45, volume 3394. 7 vehicles per hour DS 1.07 means the level of service indicates a long queue. The U-Turn movement has the highest volume at 16.45-17.45, with a volume of 656.8 pcu/hour and an intensity ratio greater than 1.0, indicating a vehicle queue.
Performance Evaluation of Projects using Earned Value Concept Siti Choiriyah; Dyah Listyaningsih; Felicia Nuciferani; Fahmi Ferdaus; Gerry Sigma Perdana; Ratih Sekartadji
Jurnal Teknologi dan Manajemen Vol 5, No 1 (2024): January
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jtm.2024.v5i1.4620

Abstract

The construction project is one of the jobs that demands the final result to align with the planning, necessitating a check on the performance obtained during the project to address any deviations from the initial plan. The Earned Value method is one of the techniques that can be used to assess project performance based on cost and time. The objective of implementing an evaluation with the Earned Value method is to understand the project's performance based on value variances and performance indexes and to identify solutions as early as possible if the project is experiencing delays. Calculations using the Earned Value method are based on budgeted cost of work scheduled (BCWS), cost for work performed (BCWP), and actual cost of work performed (ACWP). The research results on the Gunung Anyar apartment project reveal that the project experienced a delay of 3 weeks from the initial plan and a cost overrun of IDR 21,863,495,000 from the budget of IDR 19,533,411,725 (-12%). From the evaluation, it is evident that the Earned Value method needs to be applied during the ongoing project, especially when facing delays, to find solutions as early as possible to overcome the issues and prevent further significant losses.
The Effect of Using Styrofoam As Additional Material For Asphalt Concrete Layer (Laston) – WC With BNA BLE Syafiarti, Arintha Indah Dwi; Aslim, Fadlil Jalil; Utami, Gati Sri; Sekartadji, Ratih
Jurnal IPTEK Vol 26, No 1 (2022): May
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2022.v26i1.2433

Abstract

Asphalt concrete layer (laston) has a high degree of flexibility so that placing it directly on top of layers such as AC-WC (Asphalt Concrete – Wearing Course) makes this layer vulnerable to damage due to high temperatures and heavy traffic loads. The type of damage that often occurs in the laston is the release of granules and cracks. Styrofoam is a type of plastic polymer that is thermoplastic when heated it becomes soft and hardens when cold. When mixed with gasoline, styrofoam will soften and can function as an adhesive. This study was to determine the value of Marshall characteristics in the addition of styrofoam into the asphalt.variations used for styrofoam content are 1%, 1.5%, 2% with asphalt content of 4.5%, 5.0%, 5.5%, 6.0%. The results showed that the optimum asphalt value was obtained at 6% asphalt content. And the mixture that meets the requirements is the addition of 1% styrofoam. Higher content of styrofoam will reduce the value of the melt (flow) and will reduce the value of Marshall stability.
CSI AND IPA METHODS FOR ANALYZING TRAIN PASSENGER SATISFACTION AT SIDOARJO STATION Irfandi, Akhmat; Agusdini, Theresia Maria Chandra; Putra, Kurnia Hadi; Sekartadji, Ratih
Journal of Civil Engineering, Planning and Design Vol 4, No 1 (2025): May
Publisher : Faculty of Civil Engeneering and Planning - ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jcepd.2025.v4i1.7843

Abstract

Tingginya minat masyarakat terhadap angkutan kereta api terjadi karena efektifitasnya sebagai moda angkutan massal jarak jauh maupun jarak dekat, yang menunjang berbagai kegiatan ekonomi dan sosial. Kereta api mampu mengangkut barang dalam jumlah besar dan menampung penumpang dalam jumlah yang signifikan. Namun apabila permintaan layanan kereta api yang terus meningkat tidak diimbangi dengan prasarana perkeretaapian yang memadai dan kualitas layanan stasiun, maka dapat menurunkan kepuasan penumpang. Penelitian ini bertujuan untuk mengkaji karakteristik penumpang yang memanfaatkan layanan kereta api di Stasiun Sidoarjo dan menilai kepuasan mereka terhadap kualitas layanan yang diberikan oleh pengelola stasiun. Penelitian ini menggunakan metode Customer Satisfaction Index (CSI) dan Importance Performance Analysis (IPA). Data primer dikumpulkan melalui penyebaran kuesioner kepada 100 responden yang dipilih secara acak, dengan menggunakan variabel yang meliputi bukti fisik, reliabilitas, daya tanggap, empati, dan jaminan. Hasil penelitian menunjukkan bahwa skor Customer Satisfaction Index (CSI) sebesar 73,18%, yang termasuk dalam kategori penumpang “puas” terhadap layanan yang diberikan. Analisis Kinerja Kepentingan (IPA) menunjukkan bahwa subvariabel yang masuk dalam Kuadran I yang memerlukan perbaikan segera adalah ketersediaan mesin ATM, kebersihan mushola , dan penambahan fasilitas toilet. Kata Kunci : Stasiun Sidoarjo, Indeks Kepuasan Pelanggan (IKP), Importance Performance Analysis (IPA)
Analisis Kinerja Simpang Apill Empat Lengan (Studi Kasus: Simpang APILL Celep, Kota Sidoarjo) Priyono, Arif; Hadi Putra, Kurnia; Sekartadji, Ratih; mca, Theresia
Jurnal Syntax Fusion Vol 5 No 11 (2025): Jurnal Syntax Fusion: Jurnal Nasional Indonesia
Publisher : CV RIFAINSTITUT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/fusion.v5i11.485

Abstract

The Celep APILL four-legged intersection is one of the signalized intersections located in Sidoarjo City. Traffic congestion frequently occurs at this location due to excessive vehicle volumes and inefficient signal timing. Therefore, this study aims to evaluate and analyze the performance of the intersection in addressing existing traffic problems. A review is necessary since this intersection experiences high traffic intensity, making it a critical congestion point during peak hours. The objective of this research is to determine the degree of saturation at the intersection under existing conditions and after the implementation of alternative solutions. Data analysis was conducted using field-observed traffic volume data, and the evaluation method referred to the Indonesian Road Capacity Manual (PKJI) 2023. Based on the calculations, the average degree of saturation under existing conditions exceeded 0.85, indicating noncompliance with PKJI 2023 standards and the need for corrective measures. The proposed solution involved modifying the signal phasing from the original three-phase configuration to a four-phase system. The results show that the degree of saturation for each approach became less than 0.85, indicating that the signal phasing modification meets the requirements of PKJI 2023
Analisis Kinerja Simpang Lengan Empat Tak Bersinyal Jl. Wadungasri – Jl. Berbek – Jl. Gedong Masjid Kab Sidoarjo Pratama, M Bagas; Hadi Putra, Kurnia; Sekartadji, Ratih; mca, Theresia
Jurnal Syntax Fusion Vol 5 No 11 (2025): Jurnal Syntax Fusion: Jurnal Nasional Indonesia
Publisher : CV RIFAINSTITUT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/fusion.v5i11.486

Abstract

The Wadungasri, Waru four-way intersection is one of Sidoarjo Regency's intersections located within a commercial and industrial area, serving as a connector between industrial zones and an alternative route to the toll road and the airport. A review to improve its performance is necessary due to the high traffic volume, especially during peak hours. This research aims to determine the traffic performance under existing conditions and provide alternative solutions to enhance its performance. The study was conducted over three days: two working days and one holiday. The analysis is based on the PKJI (Indonesian Road Capacity Manual) 2023 guidelines, and the results are simulated using PTV Vissim student 2022. The collected data includes intersection geometry, AADT (Average Annual Daily Traffic) data, and population data. The analysis results for the intersection under existing conditions showed a Degree of Saturation (DS) value of 0.89 in the morning and 0.97 in the afternoon. This indicates that the existing condition does not meet the PKJI 2023 requirements. An alternative solution, based on this problem, was implemented by changing the intersection into a signalized intersection (APILL) with three signal phases. The results after implementing the intersection modification showed a decrease in the DS value to 0.72 in the morning and 0.77 in the afternoon. With this change, the performance complies with the PKJI 2023 standard, which requires DS < 0.85.
ANALISIS DESAIN PERKERASAN KAKU DENGAN METODE Pd T-14 2003, MDPJ 2017 DAN MDPJ 2024 PADA RUAS JALAN KEC. BUDURAN LINGKAR TIMUR, SIDOARJO Cristhoper Martin, Valendra; Hadi Putra, Kurnia; Maria C.A, Theresia; Sekartadji, Ratih
Jurnal Syntax Fusion Vol 5 No 11 (2025): Jurnal Syntax Fusion: Jurnal Nasional Indonesia
Publisher : CV RIFAINSTITUT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/fusion.v5i11.488

Abstract

Penelitian ini dilakukan untuk menganalisis desain perkerasan kaku pada ruas Jalan Lingkar Timur, Kecamatan Buduran, Sidoarjo, dengan membandingkan tiga metode, yaitu Pd T-14 tahun 2003, Manual Desain Perkerasan Jalan (MDPJ) tahun 2017, dan Manual Desain Perkerasan Jalan (MDPJ) tahun 2024. Tujuan utama dari penelitian ini adalah untuk memperoleh hasil perhitungan dimensi perkerasan kaku dari masing-masing metode dan mengetahui perbedaan dari ketiga metode tersebut dalam konteks perencanaan perkerasan jalan kaku. Metode yang digunakan dalam penelitian ini adalah pendekatan perhitungan teknis berdasarkan ketentuan pada masing-masing pedoman. Hasil perhitungan menunjukkan bahwa metode Pd T-14-2003 menghasilkan tebal perkerasan sebesar 180 mm (18 cm) dengan dowel berdiameter 28 mm, panjang 450 mm, dan jarak antar dowel 300 mm. Metode MDPJ 2017 menghasilkan tebal perkerasan 305 mm (30,5 cm) dengan dowel Ø 38 mm, panjang 450 mm, dan jarak 300 mm. Sedangkan metode MDPJ 2024 memberikan hasil perkerasan dengan tebal 300 mm (30 cm) dan dowel Ø 38 mm. Perbandingan antara metode MDPJ 2017 dan MDPJ 2024, menunjukkan bahwa MDPJ 2024 menggunakan pendekatan desain yang lebih terperinci, dengan menyediakan perhitungan faktor kelelahan (fatique) dan faktor erosi per-bebannya. Hal ini memungkinkan perencanaan perkerasan menjadi lebih akurat dan efisien dalam pelaksanaannya. Dengan demikian, hasil penelitian ini diharapkan dapat memberikan kontribusi dalam pemilihan metode perencanaan perkerasan kaku yang sesuai dengan kebutuhan teknis dan kondisi aktual di lapangan.
Co-Authors Agung, Dimas Agusdini, Theresia Maria Chandra Ahyudanari, Ervina Arintha Indah Dwi Syafiarti Aslim, Fadlil Jalil Cahya Buana Cristhoper Martin, Valendra Dewi Pertiwi Dyah Listyaningsih El Hafizah, Nafilah Fadlil Jalil Aslim Fahmi Ferdaus Felicia Nuciferani Firdausi, Mutiara Fuddoly Fuddoly Gampu, Yohanes Marian Hernanta Gerry Sigma Perdana Hadi Putra, Kurnia Herlynawati, Vera Irfandi, Akhmat Istiono, Heri Jaelani, Lalu Muhamad Jenny Caroline Kurnia Hadi Putra Kurnia Hadi Putra, Kurnia Hadi Kusumaningrum, Dewi M. Dwi Nugroho M.C.A, Theresia Maria C.A, Theresia Maria Chandra Agusdini, Theresa Mila Kusuma Wardani Pratama, M Bagas Priyono, Arif R, Rizki Shofi Izha Mahendra Siti Choiriyah Syafiarti, Arintha Indah Dwi Theresia Maria CA Theresia MCA Utami, Gati Sri Yanisfa Septiarsilia Yuntus, Lodofikus