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All Journal Jurnal Teknik Sipil FROPIL (Forum Profesional Teknik Sipil) JURNAL KAJIAN TEKNIK SIPIL G-Tech : Jurnal Teknologi Terapan Journal of Civil Engineering and Planning (JCEP) Indonesian Community Journal Jurnal Pengabdian Masyarakat Bangsa Jurnal Teknologi dan Sains Modern
Junita Eka Susanti
Institut Teknologi Sumatera
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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IDENTIFIKASI KARAKTERISTIK DISTRIBUSI UKURAN BUTIR DAN KETIDAKSERAGAMAN SEDIMEN PADA SUNGAI WAY LUNIK Maini, Miskar; Kiranaratri, Ayudia Hardiyani; Susanti, Junita Eka; Saputra, Cahyo Agung
Jurnal Kajian Teknik Sipil Vol 10, No 1 (2025): JURNAL KAJIAN TEKNIK SIPIL
Publisher : Universitas 17 Agustus 1945 Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52447/jkts.v10i1.8133

Abstract

Karakteristik distribusi ukuran butir dan tingkat ketidakseragaman sedimen memainkan peran krusial dalam memahami dinamika transpor sedimen di suatu sungai. Studi ini bertujuan untuk menganalisis karakteristik distribusi ukuran butir serta tingkat ketidakseragaman sedimen pada Sungai Way Lunik guna mengidentifikasi pola distribusi dan implikasinya terhadap proses transpor sedimen. Pengambilan sampel dilakukan pada sembilan cross-section sepanjang sungai untuk mencerminkan variasi kondisi hidraulik dan sumber material sedimen. Analisis laboratorium dilakukan dengan metode pengayakan (sieving) untuk fraksi kasar dan analisis hidrometer untuk fraksi halus. Tingkat ketidakseragaman butiran sedimen dianalisis menggunakan empat metode, yaitu Geometric Standard Deviation, Sorting Coefficient, Kramer’s Uniformity Coefficient, dan Sakai Uniformity Coefficient. Hasil penelitian menunjukkan bahwa sedimen Sungai Way Lunik memiliki variasi ukuran butir yang cukup besar. Uji laboratorium mengungkap bahwa sedimen di bagian hulu didominasi oleh kerikil, bagian tengah oleh pasir sangat besar, dan bagian hilir oleh pasir sedang hingga kasar. Lokasi CSSWL V memiliki tingkat ketidakseragaman tertinggi dengan rentang ukuran butiran mulai dari halus hingga gravel akibat kecepatan aliran yang rendah, sedangkan CSSWL VII menunjukkan tingkat keseragaman tertinggi. Variasi ini berpengaruh terhadap proses transpor sedimen, terutama di CSSWL V yang berisiko mengalami pendangkalan akibat akumulasi material sedimen. Oleh karena itu, tindakan mitigasi seperti pengerukan perlu dipertimbangkan untuk menjaga dinamika aliran dan kestabilan morfologi sungai.
Study on the Influence of Weather Factors on Construction Delays of Retaining Walls in Market Projects Junita Eka Susanti
G-Tech: Jurnal Teknologi Terapan Vol 9 No 2 (2025): G-Tech, Vol. 9 No. 2 April 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i2.6698

Abstract

Weather is an external factor that significantly influences the implementation of construction projects, especially in open environments. This research aims to evaluate the impact of weather, particularly rainfall, on delays in retaining wall construction projects in market areas. The study employs statistical analysis of historical weather data, an assessment of work progress realization, and interviews with project implementers. The analysis reveals that rainfall, both drizzle and heavy rain, affects work productivity differently. During the project timeline, rain occurred for 17 days in October (48 hours), 21 days in November (74 hours), and 7 days in December (20 hours). In the first month, progress exceeded the planned schedule with a positive deviation of 4.25%. However, in the second month, adverse weather conditions and other technical factors contributed to a negative deviation of 6.88%. Despite this setback, work progress recovered in the third month, ultimately reaching the targeted 100% completion. Regression analysis confirms that heavy rain significantly hampers construction activities more than drizzle. Significant tasks, such as the construction of retaining walls, come to a complete halt during heavy rain, whereas drizzle still allows work to proceed, albeit with reduced productivity. These findings underscore the necessity of integrating weather risk assessments into project planning to develop more resilient scheduling strategies and minimize potential delays.
Feasibility Study for the Construction of the Dekranasda Gallery Building in Pangkalpinang City Putri Ayu Dwiyana; Junita Eka Susanti
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i3.7158

Abstract

The construction of the Dekranasda Gallery Building in Pangkalpinang City is planned as part of a strategy to strengthen the creative economy sector and increase the added value of local craft products. This study aims to identify the priority location for the construction of the Dekranasda Gallery Building by evaluating three alternative sites from technical, economic, social, and environmental perspectives. Each aspect is analyzed by considering the availability of basic infrastructure, land use suitability, investment value, and community perception and social support for the gallery's construction. The assessment is carried out comparatively to obtain the most optimal location recommendations. The analysis results show that Alternative Location 1 (Taman Mandara) has the highest overall score, relatively complete infrastructure support, good social suitability, and an estimated investment requirement of IDR 13,929,500,000. Alternative Location 2 (Tampuk Pinangpura) shows a reasonably good feasibility value but is not yet optimal from a technical perspective. Meanwhile, Alternative Location 3 (Tugu Kepiting) has limited infrastructure and a low social score, requiring a higher investment of IDR 14,229,500,000. Considering all aspects of feasibility, Alternative Location 1 is recommended as a priority location for constructing the Pangkalpinang City Dekranasda Gallery Building.
Innovative Approaches to Post-Earthquake Reconstruction Material Evaluation for Healthy Simple Houses Junita Eka Susanti; Miskar Maini; Elian Zhafira
G-Tech: Jurnal Teknologi Terapan Vol 9 No 4 (2025): G-Tech, Vol. 9 No. 4 October 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i4.8007

Abstract

Post-earthquake housing reconstruction is essential for accelerating community recovery and ensuring safer living conditions in disaster-prone regions. This study evaluates the potential of recycled rubble sand from demolished masonry walls as an acceptable aggregate replacement in mortar production. It explores its integration into the development of a Healthy Simple House (HSH) model for post-disaster housing reconstruction. Laboratory experiments were conducted in accordance with PUBI-1982 and SII 0052-80 standards to characterize material properties and assess mechanical performance. The results indicate that rubble sand exhibits a well-graded particle distribution, stable density values (SSD 2.48 g/cm³, bulk 2.35 g/cm³, apparent 2.71 g/cm³), and moderate water absorption (5.62%), with slight organic contamination. Compressive strength tests showed that mortars with a 1:3 cement-to-sand ratio reached approximately 24 MPa at 28 days, meeting structural requirements, while higher rubble proportions reduced strength, restricting their application to non-structural components. The incorporation of rubble sand into the HSH model highlights its role in sustainable reconstruction by reducing reliance on natural resources while ensuring safe, healthy, and affordable housing. The study concludes that recycled rubble sand can be effectively utilized as a partial aggregate substitute, providing practical guidance for post-disaster housing programs and informing policy development for environmentally friendly and resilient reconstruction strategies that contribute to community resilience.
Flow Resistance Estimation Using the Empirical Chezy Method in Sediment-Laden Flow Miskar Maini; Junita Eka Susanti
G-Tech: Jurnal Teknologi Terapan Vol 9 No 4 (2025): G-Tech, Vol. 9 No. 4 October 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i4.8057

Abstract

Hydraulic resistance, represented by the Chezy coefficient, is crucial in estimating flow discharge in open channels and serves as a fundamental parameter in designing hydraulic structures such as irrigation canals and river control facilities. This study investigates the behavior of the Chezy coefficient under non-sediment-laden (NSL) and sediment-laden (SL) flow conditions through controlled laboratory experiments using coarse sand, complemented by comparative analysis with data from irrigation channels and natural rivers. The results show that the ratio of mean velocity to shear velocity (U/u*) exhibits a robust correlation with discharge (Q) under both flow conditions, with a determination coefficient (R²) exceeding 0.96. The hydraulic radius (Rh) also shows a strong linear relationship with discharge (R ≈ 0.98), confirming its role in the empirical estimation of the Chezy coefficient (C). The value of C increases with higher velocity ratios but tends to be slightly lower under SL conditions due to increased resistance from suspended sediments. The Mean Absolute Error (MAE) value of 0.02 indicates a slight difference between NSL and SL conditions. These findings suggest that the empirical method is unreliable and exhibits significant differences in estimating Chezy under sediment-laden flow. It highlights the need for supplementary approaches to improve irrigation and river management design accuracy.
Comparative Analysis of Concrete QTO Using BIM and Conventional on XYZ Project Rizki Adithya Wibowo; Putri Ayu Dwiyana; Junita Eka Susanti
G-Tech: Jurnal Teknologi Terapan Vol 9 No 4 (2025): G-Tech, Vol. 9 No. 4 October 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i4.8075

Abstract

The rapid advancement of technology in the construction sector has encouraged the integration of digital modeling systems such as Building Information Modeling (BIM) to improve project efficiency and accuracy. This study analyzes the implementation of BIM using Autodesk Revit 2025 in the integrated design and build construction of the XYZ Project. The objective is to compare the Quantity Take Off (QTO) results between the BIM method and conventional concrete calculation for column and beam structures, as well as to evaluate the resulting cost differences. A quantitative comparative approach was employed by modeling the structure using Revit and manually calculating the quantities through conventional methods. The results show that both methods produced the same concrete volume for columns (891.6 m³), while for beams, the BIM method produced 1,104.59 m³ compared to 1,227.47 m³ from conventional calculations, yielding a difference of 122.88 m³ (11.12%) equivalent to IDR 294,831,618.37 in cost savings. The study concludes that BIM provides higher precision and reduces potential material waste, supporting more efficient budgeting and sustainable construction management.
Implementation of Building Information Modeling in Quantity Take-Off of Construction Projects Junita Eka Susanti; Muhammad Azka Abdullah; Putri Ayu Dwiyana
Journal of Civil Engineering and Planning (JCEP) Vol. 7 No. 1 (2026): JCEP
Publisher : Program Studi Sarjana Teknik Sipil Universitas Internasional Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/jcep.v7i1.12005

Abstract

Building Information Modeling (BIM) is one of the mothods that has been rapidly developing in the Architecture, Engineering, and Construction (AEC) industry. This study aims to implement the concept of BIM using Autodesk Revit in the processess of structural modeling, volume estimation through Quantity Take – Off, and structural Clash Detection analysis in the modeling of Hospital Medical Building. The research employs a descriptie quantitative approach, explaining the modeling stages and volume calculations based on data obtained from Autodesk Revit. The modeling process was carried out in an integrated manner, producing a 3D model and 2D construction drawings in accordance with the technical project data provided in the appendices. The Quantity Take – Off results for structural elements are as follow: foundations structure of 837.693 m3, structural wall retaining wall of 79.402 m3, column structure of 708.710 m3, framing beam structure before clash detection of 1095.523 m3, floor slab structure of 737.004 m3, and BJTS reinforcement structure before clash detection of 97.469 m3, with a total rebar weight of 843.418 tons (rounded to 844 tons). The clash detection process using the Interference Check feature in Autodesk Revit assisted in resolving conflicts within the model and enhanced the accuracy of the quantitative data. The resulting QTO volumes after clash detection were: framing beam structure of 1095.549 m3 with a ratio of 0.002%, and BJTS reinforcement of 97.478 m3 with a ratio of 0.010% with rebar weight of 843.492 Tons (a difference of 0.009%). 
Evaluating Connectivity and Effectiveness of the Road Transportation Network in West Bangka Regency Ilpandari Ilpandari; Singgih Hartanto; Junita Eka Susanti; Galih Rio Prayogi; Putri Ayu Dwiyana; Farah Mawaddah; Fas'ul Akbar
G-Tech: Jurnal Teknologi Terapan Vol 10 No 2 (2026): G-Tech, Vol. 10 No. 2 April 2026
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v10i2.9311

Abstract

Transportation infrastructure is essential for regional integration and economic development in West Bangka Regency. However, corridor-oriented growth has led to uneven connectivity and a strong reliance on limited road corridors. This study evaluates the connectivity and effectiveness of the regional transportation network using spatial, topological, and operational indicators based on a graph representation comprising 12 links and 10 nodes that reflect the main inter-district road structure. The analysis integrates Alpha (α), Beta (β), and Gamma (γ) indices, road density, Accessibility Index (AI), Volume-to-Capacity (V/C) ratio, Level of Service (LOS), Travel Time Efficiency (TTE), and a composite Network Effectiveness Index (NEI). Results show low structural connectivity (Beta 0.20–0.33; Gamma 0.08–0.13; negative Alpha; density 0.039), indicating a tree-like configuration with minimal redundancy. Although operational performance remains stable (V/C 0.02–0.59; LOS A–C), accessibility is moderate to low (AI 0.189; travel time 90–111 minutes). The overall NEI indicates moderate effectiveness but limited network resilience. These findings highlight the need for policymakers to prioritize the development of alternative and transversal road links to reduce dependence on single corridors, improve accessibility, and strengthen long-term transportation resilience. The proposed approach provides a quantitative framework for infrastructure planning in corridor-dominated developing regions.
Co-Authors Ahmad Yudi Andry Yuliyanto Aprilia, Ayu Sinta Apriwelni, Siska Ayu Sinta Aprilia Ayudia Hardiyani Kiranaratri Ayudia Hardiyani Kiranaratri Budi Ribowo, Anggarani Cahyo Agung Saputra Ekaputra, Reza Asriandi Elian Zhafira Erdina Tyagita Utami Fadillah Sabri Farah Mawaddah Fas'ul Akbar Fitriana, Indri Rahmandhani Galih Rio Prayogi Ilpandari Ilpandari Ilpandari, Ilpandari Julita Hayati Khanza, Ayu Kamila M Gilang Indra Mardika Marina, Bernaditha Catur Mashuri Michael Michael Miskar Maini Muhammad Azka Abdullah Nadi, Muhammad Abi Berkah P Kirtinanda Palawi, Esra G Putri Ayu Dwiyana Putri Ayu Dwiyana Putri Ayu Dwiyana Rahmat Kurniawan Rahmat Kurniawan Reza Asriandi Ekaputra Rizki Adithya Wibowo Sihombing, Tera Melya Patrice Singgih Hartanto Sitepu, Arif Rahman Hakim Syahidus Syuhada Tambunan, Hermon Frederik Utami, Erdina Tyagita winarsih, anita lestari condro Zhafira, Elian