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All Journal JURNAL SIMETRIK Jurnal Tecnoscienza Didaktik : Jurnal Ilmiah PGSD STKIP Subang Jurnal Ilmiah Telsinas Elektro, Sipil dan Teknik Informasi Jurnal Teknik Sipil Institut Teknologi Padang Jurnal Teknik Sipil (JUTSI) Jurnal Ilmu Teknik Sipil Indonesia (JITESNA)
Rizky Simanjuntak
Universitas Negeri Medan
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Transportation Other

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Analisis Debit Aliran pada Saluran Sekunder Daerah Irigasi Namu Sira-sira Kanan Menggunakan Floating Area Method Mardi Paratama Siregar; Yesica Dwi April Yanti Sinaga; Ahmad Fauzan Hasibuan; Rizky Simanjuntak
Jurnal Teknik Sipil Institut Teknologi Padang Vol 13 No 2 (2026): Jurnal Teknik Sipil Institut Teknologi Padang
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jts.2026.V1302.0202-209

Abstract

Saluran sekunder Daerah Irigasi Namu Sira-sira Kanan memiliki peran penting dalam mendistribusikan air irigasi menuju area persawahan di kawasan Namu Ukur Utara. Kondisi debit aliran pada saluran irigasi dapat mengalami perubahan akibat perbedaan dimensi penampang dan karakteristik aliran yang terjadi pada setiap segmen saluran, sehingga debit aktual yang mengalir belum tentu seragam di sepanjang jaringan irigasi. Penelitian ini bertujuan untuk mengetahui kondisi debit aktual pada saluran sekunder Daerah Irigasi Namu Sira-sira Kanan menggunakan floating area method. Metode penelitian yang digunakan adalah survei lapangan dengan pendekatan kuantitatif melalui pengukuran langsung luas penampang basah saluran berbentuk trapesium dan kecepatan aliran. Saluran sekunder yang diteliti memiliki panjang sekitar 2,7 km dan dibagi menjadi tujuh segmen pengamatan, sehingga setiap segmen memiliki panjang lintasan sekitar 386 m. Pengukuran kecepatan dilakukan dengan menghanyutkan benda terapung pada setiap segmen untuk memperoleh waktu tempuh aliran, sedangkan debit dihitung berdasarkan luas penampang basah, kecepatan aliran, dan koefisien pelampung sebesar 0,6. Hasil penelitian menunjukkan bahwa debit aktual pada setiap segmen memiliki nilai yang berbeda-beda. Debit terbesar diperoleh pada segmen A–B sebesar 0,93 m³/detik, sedangkan debit terkecil terdapat pada segmen C–D sebesar 0,50 m³/detik. Variasi debit tersebut dipengaruhi oleh perbedaan luas penampang basah dan kecepatan aliran pada masing-masing segmen saluran. Hasil penelitian menunjukkan bahwa semakin besar luas penampang dan kecepatan aliran, semakin besar pula debit yang dapat dialirkan. Dengan demikian, kondisi geometrik saluran terbuka berbentuk trapesium berpengaruh terhadap kapasitas aliran yang tersedia pada saluran sekunder Daerah Irigasi Namu Sira-sira Kanan dan metode apung dapat digunakan untuk menggambarkan kondisi debit aktual saluran secara efektif.
ANALISIS PENERAPAN SISTEM MANAJEMEN KESELAMATAN, KESEHATAN DAN LINGKUNGAN KERJA (SMK3L) PADA PROYEK KONSTRUKSI BANGUNAN BERTINGKAT, STUDI KASUS PEMBANGUNAN RUMAH SAKIT 16 LANTAI DI MEDAN, KECAMATAN PERCUT SEI TUAN, KABUPATEN DELI SERDANG Miranda Simbolon; Dea Amanda Purba; Riko Jodika Tinambunan; Igor Jekkar Simalango; Rizky Simanjuntak; Yuni Yolanda
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 02 (2026): Volume 12 No. 2, Juni 2026 Release
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i02.12845

Abstract

The implementation of an Occupational Safety, Health, and Environment Management System (OHSMS/SMK3L) is a crucial aspect in ensuring worker safety on high-rise construction projects. This study aims to identify risky work activities, evaluate the use of Personal Protective Equipment (PPE), and assess the implementation of safety facilities on a 16-story hospital construction project in Medan. The method used was direct field observation during a three-month internship, focusing on structural work. The study results indicate various high-risk activities, including working at heights, the use of heavy equipment, electrical installations, and welding and cutting. Furthermore, several hazardous work areas were identified, such as project traffic lanes, narrow spaces, and slippery work surfaces. The use of PPE, including safety helmets, safety shoes, reflective vests, gloves, masks, and body harnesses, was generally implemented. However, discrepancies were found in the use of PPE, both in terms of completeness and standards. Safety facilities such as K3 signs, evacuation routes, fire extinguishers, and first aid kits were available, but still require improvement in quantity and placement. The conclusion of this study indicates that the implementation of SMK3L in the 16-story hospital construction project in Medan has been quite successful, but still requires improvements in supervision, worker compliance, and compliance with occupational safety standards. Optimizing the implementation of SMK3L is expected to minimize the risk of workplace accidents and create a safe, healthy, and productive work environment.
Aggregate Gradation Influence on Marshall and Stiffness of AC-WC Mixtures I Wayan Putra Jayantara Jayantara; Wenny Herdianti; I Gede Wyana Lokantara; Anggiat Daniel Anderson Munthe; Rizky Simanjuntak
Jurnal Ilmiah Telsinas Vol 9 No 1 (2026)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/telsinas.v9i1.7580

Abstract

Aggregate gradation plays an important role in determining the performance of asphalt mixtures used in road pavement structures. Numerous studies have investigated the influence of aggregate gradation on Marshall characteristics and volumetric properties of asphalt mixtures. However, limited studies have examined the combined effect of aggregate gradation variations within the specification limits on both Marshall characteristics and stiffness performance of AC-WC mixtures. In addition, the influence of proportional gradation variations across the specification envelope has not been widely discussed. Therefore, this study aims to investigate the influence of aggregate gradation variations within the specification limits of Asphalt Concrete Wearing Course (AC-WC) on optimum asphalt content, Marshall characteristics, and mixture stiffness. Five aggregate gradation variations were prepared using the proportional method based on gradation limits. Laboratory tests were conducted using Marshall testing and Indirect Tensile Stiffness Modulus (ITSM) to evaluate mixture performance. The results show that aggregate gradation significantly affects the optimum asphalt content and mechanical characteristics of the mixture. Finer aggregate gradation increases the aggregate surface area and requires higher asphalt content. The optimum asphalt content for different gradation variations ranged from 5.7% to 6.3%. In addition, finer gradation produced lower air voids (VIM) and resulted in higher Marshall stability and mixture stiffness. These findings indicate that aggregate gradation has a significant influence on the volumetric and mechanical properties of AC-WC mixtures.
EVALUASI KAPASITAS SALURAN DRAINASE DALAM MENAMPUNG LIMPASAN HUJAN DAN LIMBAH CAIR DOMESTIK DI Jl. SARIBU DOLOK SIMALUNGUN, INDONESIA Daniel Mario Sidabutar; Rizky Simanjuntak; Rumila Harahap; Wisnu Prayogo
JURNAL SIMETRIK Vol 16 No 1 (2026): Jurnal Simetrik (Sipil, Mesin, Listrik)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/js.v16i1.3909

Abstract

This study evaluates the capacity of drainage channels in accommodating stormwater runoff and domestic wastewater along Saribu Dolok Road, Simalungun Regency, Indonesia. Rapid population growth and escalating domestic activities in the area have led to increased volumes of wastewater and surface runoff, potentially exceeding the capacity of the existing drainage system. The objective of this research is to assess the adequacy of the current drainage infrastructure in handling projected hydrological loads. The methodology encompasses population projection analysis to estimate future domestic wastewater discharge, rainfall projection analysis to determine design rainfall intensities, and runoff discharge calculations employing standard hydrological methods. Furthermore, evapotranspiration analysis is conducted to refine water balance estimations, followed by hydraulic capacity assessment of the drainage channels and a comprehensive evaluation of the overall drainage system performance. The results reveal discrepancies between the existing channel capacities and the projected combined discharges from runoff and domestic wastewater, identifying segments that may underperform under peak conditions. These findings offer a technical foundation for pinpointing critical points in the drainage network and elucidating the interplay between hydrological inputs and channel performance under future scenarios. Keywords: Drainage Capacity, Runoff Discharge, Domestic Wastewater, Rainfall Projection, Evapotranspiration
Evaluasi Kapasitas Saluran Drainase di Jalan Bhayangkara - Jalan Bilal Kecamatan Medan Timur kristina simanullang; Faqih Musyaffa; Rizky Simanjuntak
Jurnal Teknik Sipil (JUTSI) Vol. 2 No. 1 (2026): Jurnal Teknik Sipil (JUTSI)
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Drainase merupakan sistem saluran yang berfungsi untuk mengalirkan atau membuang kelebihan air dari suatu wilayah agar tidak terjadi genangan maupun banjir. Permasalahan drainase sering terjadi akibat kapasitas saluran yang tidak memadai, adanya sedimen, serta penumpukan sampah pada saluran. Selain itu, pertumbuhan jumlah penduduk juga menyebabkan peningkatan debit limpasan air hujan dan limbah cair domestik yang dialirkan ke saluran drainase. Penelitian ini bertujuan untuk mengidentifikasi penyebab terjadinya genangan serta mengevaluasi kapasitas saluran drainase eksisting di ruas Jalan Bhayangkara – Jalan Bilal, Kota Medan, dalam menampung debit limpasan dan debit air buangan untuk periode perencanaan 2, 5, 10, 25, 50, dan 100 tahun mendatang. Metode yang digunakan adalah deskriptif kuantitatif dengan melakukan survei ke lapangan serta analisis data hidrologi dan kondisi saluran eksisting. Hasil analisis menunjukkan bahwa kapasitas saluran drainase yang ada tidak seragam dan sebagian saluran tidak mampu menampung debit aliran air, sehingga menyebabkan genangan pada beberapa titik. Oleh karena itu, diperlukan evaluasi serta peningkatan kapasitas saluran drainase agar sistem drainase dapat berfungsi secara optimal.  
Optimalisasi Kinerja Saluran Drainase Studi Kasus Daerah Kelurahan Petisah Hulu, Medan Melalui Evaluasi Teknis Rumilla Harahap; Seny Climenty Siagian; Edwart Samuel Gaby Siahaan; Rizky Simanjuntak; Wisnu Prayogo
JURNAL TECNOSCIENZA Vol. 10 No. 2 (2026): JURNAL TECNOSCIENZA
Publisher : JURNAL TECNOSCIENZA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51158/84mb2n87

Abstract

 This study aims to assess the effectiveness of the drainage system in the urban area of Petisah Hulu Village in reducing the risk of flooding caused by high rainfall and rapid land use changes. Hydrological analysis was conducted using the Log Pearson Type III distribution to calculate the design rainfall, while the existing channel capacity was analyzed using the rational method. Based on the technical evaluation in the Final Report of the Medan Urban Drainage Plan (MUDP) Open Channel Inventory, the results of the study indicate a very high level of flood vulnerability. It was found that 58.4% of the total channel length did not meet the safety threshold criteria (freeboard < 30 cm) for the design flood discharge. The accumulation of surface runoff and domestic waste caused excess capacity of 41.6% at critical points, especially on Jalan Gajah Mada and Jalan S. Parman which flow into the Babura River. This decline in performance was significantly influenced by inadequate measurements. 
Evaluasi Penerapan K3 dan Risiko Kecelakaan pada Proyek Konstruksi di Kota Medan Afriyani Siburian; Ival Ardyansyah Gultom; Muhammad Rafa Rizqi Lubis; Thya Ifhada Tambunan; Rizky Simanjuntak; Yuni Yolanda
JURNAL TECNOSCIENZA Vol. 10 No. 2 (2026): JURNAL TECNOSCIENZA
Publisher : JURNAL TECNOSCIENZA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51158/v6xkms40

Abstract

The construction sector is one of the industries with a relatively high risk of occupational accidents due to complex work activities, the use of heavy equipment, and dynamic working environments. These conditions make the implementation of Occupational Safety and Health (OSH) essential to protect workers from occupational accidents and health problems. This study was conducted to evaluate the implementation of OSH and identify potential work accident risks in construction projects in Medan City. A descriptive qualitative method was applied through field observations, documentation, and an OSH checklist. The results indicate that OSH implementation at the project site has generally been carried out well, as reflected by the availability of Personal Protective Equipment (PPE), safety signs, fire extinguishers, and evacuation routes. However, several unsafe conditions were still identified, including incomplete use of PPE, work at heights without adequate protection, and dusty working environments. These conditions may increase the risk of occupational accidents and health problems among workers. Therefore, improved supervision, worker awareness, and environmental control are needed to optimize OSH implementation and create a safer workplace.
Evaluasi Kapasitas Saluran Drainase Di Kecamatan Medan Kota Dan Medan Denai Ilmi Alfiah Daulay; Catherine Honey Mahadewi; Rizky Simanjuntak; Wisnu Prayogo; Rumilla Harahap
Jurnal Ilmu Teknik Sipil Indonesia Vol. 2 No. 2 (2026): JITESNA - Juli
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jitesna.v2i2.1384

Abstract

Flooding occurs every rainy season on Air Bersih Street, which crosses Medan Kota and Medan Denai Districts. Rainwater tends to pond on the road surface rather than flow into drainage channels, indicating an imbalance between runoff discharge and channel capacity. This study aims to evaluate the capacity of existing drainage channels and identify the factors affecting their performance. Field surveys were conducted on 12 segments along ±3 km to measure channel width, depth, length, and sediment thickness. Maximum rainfall data for 2014–2023 from BMKG were analyzed using the Gumbel distribution and Mononobe method. Domestic wastewater discharge was calculated based on population data.The results show severe sedimentation with a total sediment volume of 780.3 m³. The planned runoff discharge reaches 2.51 m³/s, while domestic wastewater contributes only 0.086 m³/s (3.3% of total discharge). Comparison between total discharge and channel capacity indicates that only segment 10 has sufficient capacity (2.79 m³/s > 2.60 m³/s), while the other segments are inadequate. The main causes are lack of routine dredging, improper waste disposal, and insufficient channel dimensions. Therefore, immediate channel normalization, periodic sediment dredging, and public awareness on waste management are strongly recommended.
Evaluasi Kinerja Sistem Drainase Menggunakan Metode Rasional Dan Persamaan Manning Pada Koridor Jalan Suluh – Jalan Pembangunan Iii Kota Medan Yessika Angelina Simaremare; Arjuna Sihole; Rizky Simanjuntak; Wisnu Prayogo; Rumilla Harahap
Jurnal Ilmu Teknik Sipil Indonesia Vol. 2 No. 2 (2026): JITESNA - Juli
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jitesna.v2i2.1385

Abstract

This study aims to evaluate the performance of the drainage system in the Jalan Suluh – Jalan Pembangunan III corridor in Medan City based on surface runoff discharge. The main problem that occurs is waterlogging during high-intensity rainfall due to inadequate channel capacity. The methods used include rainfall analysis using the Log Pearson Type III distribution, rainfall intensity calculations using the Mononobe method, runoff discharge calculations using the rational method, and channel capacity analysis using the Manning equation. The data used were rainfall data for the 2016–2023 period and direct field measurements. The results showed that the maximum runoff discharge of 1.63 m³/second was greater than the capacity of most drainage channels. Of the eight segments analyzed, only one segment met capacity, while the other seven segments were unable to accommodate the flow discharge. Based on these results, it can be concluded that the drainage system at the study site is not functioning optimally and requires improvements in the form of channel normalization and redesign of channel dimensions.
Geometric Characteristics And Sedimentation Analysis Of Urban Drainage Channels In Alumunium Raya Tiur Sari Tua Sinaga; Ardino Wira Jaya; Rizky Simanjuntak; Wisnu Prayogo; Rumilla Harahap
Jurnal Ilmu Teknik Sipil Indonesia Vol. 2 No. 2 (2026): JITESNA - Juli
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jitesna.v2i2.1386

Abstract

Urban drainage systems are crucial for managing surface runoff and preventing flooding in densely populated areas like Medan. However, rapid urbanization, population growth, and sedimentary layers often reduce the hydraulic capacity of these channels, which can lead to local flooding. The purpose of this study was to examine the geometric characteristics and sedimentation conditions of the drainage channels on Jalan Alumunium Raya Medan. This study used a descriptive-evaluative method that combined field surveys for primary data on nine observation segments with secondary data analysis in the form of rainfall and population statistics. The study found significant sedimentation with a height of up to 0.8 m, reducing the effective capacity of the channel.Geometric measurements indicate that the channel is between 1.0 and 1.55 meters wide and 0.45 and 1.4 meters deep. Analysis indicates that the projected population of 37,050 by 2025 and high annual rainfall (2,100–2,600 mm) both increase the amount of runoff the system must handle. The total sediment volume is 1,359.23 m³, and the flow rate is 1.94 m³/s. In conclusion, the current drainage system is not functioning properly and can cause flooding. To restore the effective capacity of the channel and ensure long-term urban water management, regular maintenance, sediment dredging, and normalization of the channel dimensions are essential.
Co-Authors Afriyani Siburian Ahmad Fauzan Hasibuan Anggiat Daniel Anderson Munthe Annisa Zahra Fakhira Ardino Wira Jaya Arjuna Sihole Beatrix Denada Sidabukke Catherine Honey Mahadewi Cinta Fhidelia Simanjuntak Daniel Mario Sidabutar Dea Amanda Purba Edwart Samuel Gaby Siahaan Faqih Musyaffa Fifi Aliyda Gari Daniel Silaban Harahap, Rumilla I Gede Wyana Lokantara . I Wayan Putra Jayantara Jayantara Igor Jekkar Simalango Ilmi Alfiah Daulay Ival Ardyansyah Gultom Kanisius Delvin S Gulo Khalill Gibran Diqri kristina simanullang Lioni Gabby Ella Br Ginting Mardi Paratama Siregar Miranda Simbolon Muhammad Al Bukhary Muhammad Rafa Rizqi Lubis Oktavianus Napitu Rika Dona Puspita Riko Jodika Tinambunan Rumila Harahap Rumillah Harahap Seny Climenty Siagian Thya Ifhada Tambunan Tiur Sari Tua Sinaga Wardatun Najwa Wenny Herdianti Wisnu Prayogo Yesica Dwi April Yanti Sinaga Yessika Angelina Simaremare Yuni Yolanda Zulham Prasetyo