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All Journal Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Sprocket : Journal of Mechanical Engineering Jurnal Visi Eksakta Jurnal Kedokteran Methodist

Simanjuntak, Salomo

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Author-ID : 1751046

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NUMERICAL SIMULATION OF RETROFITTING WITH EXPANSION IN SUPPORT REINFORCE CONCRETE BEAM Purba, Luki Hariando; Simanjuntak, Salomo; Supriyadi, Bambang
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol. 28 No. 2 (2023): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v28i2.5370

Beam-strengthening innovations need to be developed considering the frequent occurrence of earthquakes in Indonesia to avoid structural failure. One of the innovations in strengthening existing beams is strengthening by expanding the beam support area. This research aims to determine the behavior of strengthening existing beams. The research methods used are theoretical analysis and finite element analysis. Theoretical analysis and FEA show that strengthening the P1 beam can increase the bending and shear moment capacity by more than 50%. FEA analysis shows that retrofitting of the P1 beam increases stiffness by 45%. Strengthening the P1 beam is also able to avoid failure at the beam-column connection.

MENENTUKAN PRODUKSI ENERGI (kWh) PADA PERENCANAAN PEMBANGKIT LISTRIK TENAGA MIKRO HIDRO (PLTMH) SUNGAI AEK SILANG di KABUPATEN HUMBANG HASUNDUTAN Lumban Gaol, Partahi; Simanjuntak, Salomo
Jurnal Visi Eksakta Vol. 1 No. 1 (2020): Jurnal Visi Eksakta : Edisi Juli
Publisher : LPPM Universitas HKBP Nommensen

This study concerned with designing a micro hydro power generation. The capacity of the plant is calculated on the basis of dependable flow, namely the amount of discharge that is equalled or exceeded during a certain period or with certain probability. Large designed flow have low probability of occurence. Small designed flow is more likely to occur but only produce little electrical power. Designed flow has big influence to production cost of each kWh of power generated. In this study, optimum designed flow is obtained through optimisation of parameter such as cost of producing 1 kWh power from several value of dependable flow. This study conclude that an optimum economic value can be reached by dependable flow of 8,165 m3/s with 45% probability. The cost of producing the power is Rp 557.54 per kWh. The plant generates approximately 64.530.792,94 kWh electrical power in one year.

ANALISA KEBUTUHAN AIR BERSIH PADA DI KOTA BINJAI SUMATERA UTARA Simanjuntak, Salomo; Zai, Eben Oktavianus; Sihombing, Parto Oktavianus
Jurnal Visi Eksakta Vol. 1 No. 1 (2020): Jurnal Visi Eksakta : Edisi Juli
Publisher : LPPM Universitas HKBP Nommensen

Human life is very dependent on the fact of good quality air which is called clean water. Clean water is one type of water-based resource that is of good quality and is commonly used by humans for consumption or in carrying out their daily activities including sanitation. The most important thing is clean water is a basic human need that affects human health. Binjai City is a city with a dense population of 283,362 people in 2020, including a small city with a usage of 100 liters / person / day. This requires an analysis of the need for clean water that can be used effectively, efficiently and sustainably. This analysis will require data: the total population obtained from the Central Bureau of Statistics and the existing clean water capacity will be obtained from PDAM Tirtasari as well as literature studies or direct links to related parties regarding the existence of clean water in the city of Binjai. The need for clean water is divided into domestic water needs and non-domestic water needs in which there are social, commercial, industrial, and government agency needs. This need will be projected until 2025 so that Binjai city needs to build a new water treatment plant.

HUBUNGAN TANAH DASAR TERHADAP PERKERASAN LENTUR (FLEXIBLE PAVEMENT) JALAN RAYA Simanjuntak, Johan Oberlyn; Saragi, Tiurma Elita; Simanjuntak, Salomo; Sipayung, Triwani
Jurnal Visi Eksakta Vol. 2 No. 1 (2021): Jurnal Visi Eksakta : Edisi Januari
Publisher : LPPM Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.061 KB)

The road is one of the important infrastructure in supportmobility of community activities. Based on the type of pavement can be dividedinto 3, namely flexible pavement, rigid pavement, and composite pavements. Construction problemsthe road is the subgrade and its compaction work. In this research leadsto the relationship of subgrade to flexible pavement. On flexible pavement there is a 3-layer structure, namely suface, base andsub-base. The thick structure of the flexible pavement layer is severely hampered by subgrade.In this Final Project, the analysis was carried out on 3 variations of CBR, namely 6%, 10%, and15% and compared to 2 variations of the material in the top foundation layer (LPA)and sub-base layer (LPB) and 2 variations of methods, namely the Bina Marga method andAASHTO. From the evaluation results with CBR variations, material variations and variationsmethod, obtained the results of the thickness of the pavement with CBR variations that are getting biggerCBR value, the smaller the thickness of the pavement layer, if seen from the variationthe material the lower the material quality, the thicker the pavement layer, and if it is seen from the variation of the method which is the most accurate and suitable to be appliedIndonesia is the DGH method. Then it can be denied that the subgrade andmaterial greatly affects the thickness of the flexible pavement layer.

ANALISA KEBUTUHAN AIR BERSIH DI KOTA MEDAN SUMATERA UTARA Simanjuntak, Salomo; Zai, Eben Oktavianus; Tampubolon, Michael Halomoan
Jurnal Visi Eksakta Vol. 2 No. 1 (2021): Jurnal Visi Eksakta : Edisi Januari
Publisher : LPPM Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (597.377 KB)

The water that humans really need is good quality water, which is commonly known as clean water. Clean water is one type of water-based resource that is of good quality and is commonly used by humans for consumption or in carrying out their daily activities including sanitation. The most important thing is clean water is a basic human need which greatly affects human health. The stages in completing this Final Project are first to collect the required data from the Central Bureau of Statistics and BAPPEDA Medan City with literature reviews and ask questions directly to related parties about the required data. Then the calculation of the projected population in the city of Medan using the geometric, arithmetic method. The next stage is calculating the need for clean water in Medan City and calculating the maximum daily water needs and peak hours.

ANALISA KONTRAK PROYEK KONSTRUKSI DI INDONESIA Simanjuntak, Johan Oberlyn; Bartholomeus; Simanjuntak, Salomo; Lumbangaol, Partahi; Astri Agnes
Jurnal Visi Eksakta Vol. 2 No. 2 (2021): Jurnal Visi Eksakta : Edisi Juli
Publisher : LPPM Universitas HKBP Nommensen

The contract is a very importand document in the project. Contract are seen as laws that must be obeyed, govern and control the rights and obligations between service users and service providers in the project. In world of construction in Indonesia, the standard used for contract documents must be based on Law No.2 of 2017 on construction services as a guide and guidance in constructions activities in Indonesia. In the international world, FIDIC documents has long been recognized, which is a contractual rule that has been used by many countries. FIDIC has also been widely adapted to government and private projects in Indonesia. The first analysis is to identify the contract documents used in several project in North Sumatera region. This analysis shows that the FIDIC red book document is the most suitable document to be used in several project in North Sumatera. The second analysis is comparing the FIDIC document and the analysis shows that the contract document that best matches the points in the questionnaired is Law No. 2 of 2017 on construction services. From the analysis of the previous discussion a conclusion was drawn regarding the philosophy of the work contract discussed was the type of unit price contract based on.

PEMILIHAN ALTERNATIF SUMBER AIR BAKU DI KABUPATEN KARO Simanjuntak, Salomo; Saragi, Yetty Riris; Simanjuntak, Johan Oberlyn; Pasaribu, Humisar; Sianipar, Ricki A H
Jurnal Visi Eksakta Vol. 2 No. 2 (2021): Jurnal Visi Eksakta : Edisi Juli
Publisher : LPPM Universitas HKBP Nommensen

Clean water is a primary need for humans in every country. The availability of clean water must be guaranteed in time, quantity and quality. The need for water for both domestic and non-domestic needs continues to increase from year to year. To meet the needs of clean water, the people of Karo Regency need clean water sources that are suitable for drinking. Water resources are water discharge and population for water distribution. In finding the amount of water demand, an analysis of the population and analysis of clean water production is carried out. Determining the need for clean water and the population in Karo Regency uses the Geometry method which this method shows the largest population growth so that it can be planned for clean water needs until 2027. Based on the results of the projected population plus the number of water needs in 2027 as many as 491,444 people, the required water discharge is 907,799 l/s while the current production capacity is 14,744.831 l/s, so the additional capacity needed is 0.01003 m3/s. Implementation in the construction of clean water facilities must be adjusted to the level of social, cultural, and economic conditions of the community.

Tingkat Penerapan Keselamatan, Kesehatan Kerja dan Lingkungan (K3l) Pada Proyek Konstruksi Simanjuntak, Johan Oberlyn; Lumbangaol , Partahi; Simanjuntak, Salomo; Pasaribu, Humisar; Simanungkalit, Okto
Jurnal Visi Eksakta Vol. 3 No. 1 (2022): Jurnal Visi Eksakta : Edisi Januari
Publisher : LPPM Universitas HKBP Nommensen

Increased development in various regions in Indonesia, especially in the city of Medan, makes many contactors compete with each other in implementing a project. Starting from the time, quality, and cost. However, there are still many contractors who ignore Occupational Safety, Health and Environment (K3L). This study aims to determine the level of application of Occupational Safety, Health and Environment (K3L) in construction projects. Occupational Health, Safety and Environment (K3L) is a program that aims to create a safe, healthy workplace. So that it can reduce the risk of work accidents and occupational diseases as low as possible on the project. The theory used in this study uses quantitative methods that tend to produce descriptive results. The sampling technique was carried out by observation and questionnaire. The instrument used comes from the Minister of Public Works Regulation No. 9 of 2008. This research was conducted on the Cinema Grand Jati Junction construction project located on Jln Perintis Kemerdekaan, Medan The results of the research on the level of application of Occupational Safety, Health, and Environment (K3L) for the Cinema Grand Jati Junction construction project on Jln Perintis Kemerdekaan, Medan amounted to 90.54%. The completeness of K3L facilities in the project was 86.7%.

Analisa Karakteristik Getaran Pada Mesin Asphalt Mixing Plant Tipe Apollo ANP- 1500 Berdasarkan Kapasitas Pembuatan Aspal Jalan Pada Daerah Horizontal, Vertikal Dan Longitudinal Berdasarkan Time Domain Sihombing, Suriady; Nababan, Wilson; Sidabutar, Ros Anita; Saragi, Yetty Riris; Lumbangaol, Partahi; Simanjuntak, Salomo
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 3 No 1 (2021): Edisi Agustus 2021
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Asphalt mixing plant machine is a tool used to process several materials into road asphalt, where it is necessary to know how to analyze the vibration characteristics of the asphalt mixing plant machine based on the capacity of making asphalt road in horizontal, vertical and longitudinal areas based on the time domain. The research method is carried out by collecting data on the amount of deviation, speed and acceleration that arise due to the processing of several materials so as to produce road asphalt based on differences in the capacity of different asphalt processed. Based on the measurement results, it is found that the highest vibration occurs at the asphalt mixing plant machine seat for a capacity of 60 tons/hour where the magnitude of the deviation is 0.222 mm in the horizontal direction at 100 seconds, the largest velocity is 11.99 mm/s horizontally in the second 40 mm/s and the largest acceleration is 369.7 mm/s2 in the horizontal direction of the 20th second. According to the ISO IS 2372 standard, the vibration of the Apollo ANP-1500 asphalt mixing plant machine enters class IV with a generator capacity above 75 KW, to be more precise (150KVA = 120KW). Then it can be analyzed that the generator vibration falls into the category of "vibration within tolerance limits and is only operated for a limited time" where the highest speed is 11.99 mm/s.

Alasan Penggunaan Material Bekas Pada Bangunan lumbangaol, partahi; Sidabutar, Ros Anita; Simanjuntak, Salomo; Sinaga, Andre Damara
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 4 No 2 (2023): Edisi Februari 2023
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v4i2.896

This study aims to find out the reasons that encourage the reuse of used materials in buildings. The data collection method was carried out by means of a questionnaire survey and interviews with respondents involved in the use of used materials, especially used wood. Respondents consist of used material traders, used material users, building contractors, foremen and building construction contractors who are used material producers. The research was carried out at used building material sales centers in Medan City, which are usually located on Jalan Pahlawan, Medan Perjuangan District, Jalan BrigJen Katamso, Jalan Gagak Hitam, and Jalan Helvetia Raya. Overall there were 10 respondents who participated. This study concludes that the main reason for using used wood materials is related to the price difference between used materials and new materials. Even though the use of used goods has a positive impact on efforts to preserve the environment, environmental conservation considerations have not become an important consideration in the use of used materials in the city of Medan.

Co-Authors Astri Agnes Bambang Supriyadi Bartholomeus Hutagalung, Bartholomeus Hutasoit , Eka Samuel P. Lumban Gaol, Partahi Lumbangaol, Partahi Nababan, Wilson Pasaribu, Humisar Purba, Luki Hariando Saragi, Tiurma Saragi, Tiurma Elita Saragi, Yetty Saragi, Yetty Riris Sari, Young Sianipar, Ricki A H Sidabutar, Ros Anita Sihombing, Parto Oktavianus Sihombing, Suriady Simanjuntak, Johan Oberlyn Simanungkalit, Okto Sinaga, Andre Damara Sipayung, Triwani Tampubolon, Michael Halomoan Zai, Eben Oktavianus

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