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All Journal Journal of Engineering and Technological Sciences POROS TEKNIK Jurnal Teknik Sipil Info-Teknik EnviroScienteae ComTech: Computer, Mathematics and Engineering Applications Jurnal IMPACT: Implementation and Action Jurnal Multidisiplin Madani (MUDIMA)
Reza Adhi Fajar
Politeknik Negeri Banjarmasin
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Social Sciences Other

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Technical study is required for the planning and construction of a PRM warehouse and its supporting facilities, including an office and employee accommodations in Kasai Village, Batumandi District, Balangan Regency. Hadi, Sofwan; Fajar, Reza Adhi; Ruspiansyah
Jurnal IMPACT: Implementation and Action Vol. 7 No. 1 (2024): Jurnal Impact
Publisher : Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/impact.v7i1.14510

Abstract

In 2022, the most extensive plantation in Balangan Regency was a rubber plantation, covering an area of 37,901 hectares and producing 24,375 tons. To enhance the role and competitiveness of rubber commodities, one of the necessary efforts is to improve the quality of processed rubber materials. This requires a facility for processing, storing, and marketing rubber raw materials, whether in the form of latex, lump, slab, smoked sheet, or crepe. PT. Asabaru Dayacipta Lestari (PERSERODA), a regional company in Balangan Regency with a rubber plantation of 31,383 square meters in Batumandi District, plans to construct a warehouse for processing, storing, and marketing Processed Rubber Materials, along with office and employee accommodations. To support this, a technical study is required for the planning and construction of a PRM warehouse and its supporting facilities, including an office and employee accommodations in Kasai Village, Batumandi District, Balangan Regency. Cost analysis based on the National Building Unit Price (HSBGN) issued by the Regent includes several classifications to determine the estimated cost of physical construction, planning, supervision, and activity management. The cost estimate in this technical study is a rough estimate to be used for budgeting and as a basis for evaluating project performance. The calculation is based on the 2021 South Kalimantan Province National Building Unit Price (HSBGN), which is converted to 2024 using inflation data from the Central Statistics Agency (BPS) of South Kalimantan Province. Based on the 2021 South Kalimantan Province HSBGN for Balangan Regency, the estimated cost (budget) for the construction of a Processed Rubber Materials warehouse, office, and employee accommodations is Rp. 18,778,365,000. This cost includes estimates for planning, supervision, activity management, and construction. This estimated cost (budget) is still at an early stage and can be continued to the next stage, which is detailed planning (DED), technical specifications, and a detailed budget plan (RAB). For data accuracy, a field survey or soil testing (sounding, etc.) should be conducted. Keywords : warehouse, processed rubber materials, cost estimation
Turning DIN 19682-7 Procedure of Infiltration Rate of Soils Test into the Mobile App for Cloud Storage Sulistyo, Totok; Kiptiah, Mariatul; Kusumayudha, Sari Bahagiarti; Cahyadi, Tedy Agung; Fajar, Reza Adhi
ComTech: Computer, Mathematics and Engineering Applications Vol. 16 No. 2 (2025): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v16i2.13000

Abstract

The in-situ soil infiltration test using A Double Ring Infiltrometer (DRI) apparatus can be conducted in the field according to DIN 19682-7 standards and procedures. As required by these standards, the traditional paper-based measurement form can be replaced with a new application developed to meet standard requirements. The DRI apparatus consists of two concentric rings placed in the soil, filled with water, while the outer ring maintains a constant water level. The water level drop in the inner ring is observed and recorded at regular intervals. The infiltration rate can be calculated for each interval by measuring the change in water height over time. This new application facilitates the automatic calculation of both the actual soil infiltration rate and the Horton soil infiltration model. Comparison tests between the application results and Excel calculations have yielded similar outcomes. The goal of this research is to develop a mobile web-based application for recording data and calculating soil infiltration measurements using the DRI method. The research methodology involves transforming the measurement procedure into a concept, designing the application, and then implementing that design. By replacing the paper-based process, this application will enhance the efficiency, accuracy, and flexibility of soil infiltration measurement projects in various locations. Furthermore, the data will be stored in the cloud, allowing for crowdsourced infiltration data collection and monitoring from any location, including the office.
Co-Authors Ahmad Rizani Ahmad Rizani, Ahmad Aris Rinaldi Aunur Rafik Cahyadi, Tedy Agung Dasniari Pohan Dasniari Pohan Djihad, Fajar Fajar Djihad Gunawan Handayani Handayani, Gunawan Herliyani Farial Agoes Idham Riyando Moe Idham Riyando Moe Kartini Kartini Khairil Yanuar Kusumayudha, Sari Bahagiarti Lilik Eko Widodo Mariatul Kiptiah Muhammad Humaidi Muhammad Rizhan Muhammad Rizhan, Muhammad Notosiswoyo, Sudarto Pamungkas, Tri Chandra Rinaldi, Aris Ruspiansyah Saptarini, Dessy Lestari Sofwan Hadi, Sofwan Sudarto Notosiswoyo Surat Totok Sulistyo Tri Chandra Pamungkas Zain Hernady Zain Hernady Arifin