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All Journal JURNAL EDUCATION AND DEVELOPMENT Syntax Idea Enrichment : Journal of Management Jurnal Teknik Sipil Cendekia (JTSC) International Journal of Science and Society (IJSOC) CRANE: Civil Engineering Research Journal Jurnal Pengabdian Papua Cenderabakti: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian Masyarakat Sains dan Teknologi Jurnal Indonesia Sosial Teknologi Jurnal Sipil Terapan
Alfian Adie Chandra
Universitas Cendrawasih Jayapura
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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Design of Leading Type Retaining Walls: Case Study in Perumnas IV Padang Bulan, Jayapura City Alfian Adie Chandra; Helen Gianditha Wayangkau; Ahmad Gifary
International Journal of Science and Society Vol 5 No 1 (2023): International Journal of Science and Society (IJSOC)
Publisher : GoAcademica Research & Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/ijsoc.v5i1.625

Abstract

Jayapura City is one of the Papua Province’s capital cities with an increasing population. One of the areas in Jayapura City, especially Perumnas IV Padang Bulan, is surrounded by hills. Infrastructure development in the densely packed Perumnas IV Padang Bulan area and increasingly narrow land has forced the local community to build infrastructure under the foot of the hills. Infrastructure development under the foot of the mountains is very prone to landslides or soil movement. There is a retaining wall planned so that the movement of the soil is restrained by the retaining wall so that no landslides occur, which endanger the community in the Perumnas IV Padang Bulan area. From a survey of the Perumnas IV Padang Bulan area in the form of topographic data and cone penetration data (CPT), contour data and cone penetration results (CPT) data were obtained for QC and fs values, then soil type classification was carried out with empirical correlation approaches, then active earth pressure calculations were carried out and passive from Rankine’s theory. As well as planning a safe leaning type retaining wall. From the results of the planning that has been done, the plan obtained is a leaning type retaining wall with concrete material, the height of the retaining wall reaches 3.1 meters, and the width of the foundation is 2 meters. Safe against overturning, shearing, and soil-bearing capacity.
MODIFIKASI SIFAT PLASTISITAS TANAH LEMPUNG DENGAN PENAMBAHAN PASIR: MODIFIKASI SIFAT PLASTISITAS TANAH LEMPUNG DENGAN PENAMBAHAN PASIR Alfian Adie Chandra
JURNAL TEKNIK SIPIL CENDEKIA (JTSC) Vol 4 No 1 (2023): February
Publisher : Departement of Civil Engineering, Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51988/jtsc.v4i1.117

Abstract

Clay soil is a type of fine-grained soil and spread many areas in Indonesia, especially Papua province. Clay soil has the plasticity characteristic where it can changes in texture and even volume influence of changes water content. Clay contains several types of minerals but the montmorillonite causes clay have the ability to absorb and seem store water longer than other soil types. The high plasticity characteristic of clay soil is the reason why this type of soil has the ability to experience volume changes such as swelling during the rainy season and shrinking during the dry season. This condition is one of the causes of clay soil having a low carrying capacity when the rainy season or when the water content contained high, so it often causes subsidence in roads or buildings. Montmorillonite content in clay can be reduced and the texture and size of very small grains can be changed by adding other materials. In this study by adding sand material with a composition 10%, 20% and 30% to the weight of clay in the original condition. Tests to determine changes in the plasticity of clay are soil properties, liquid limit, plastic limit which all of these tests refer to the applicable SNI tests and are carried out at the Civil Engineering Laboratory, Faculty of Engineering, Cenderawasih University. The data from the test results above will be used to see changes in the characteristics of clay soil, both in terms of grain size gradations and plasticity properties.
RENOVASI RUANG BACA SEBAGAI UPAYA PENINGKATAN MINAT BACA BAGI ANAK-ANAK PANTI ASUHAN KANA’AN JAYA Mujiati Mujiati; Apolo Safanpo; Helen Gianditha Wayangkau; Alfian Chandra; Bernathius Julison
JURNAL PENGABDIAN PAPUA Vol 7, No 1 (2023)
Publisher : LPPM Uncen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jpp.v7i1.2513

Abstract

Kana'an Jaya Orphanage is one of the privately owned social institutions that was originally a shelter for abandoned children and orphans who came from several areas of political conflict in the Papuan Mountains. In 2019 there was a flash flood disaster that ravaged their building facilities. Some facilities, such as the reading room, were destroyed. Inadequate facilities for learning are certainly a factor in not realizing the development of human resources as desired by the Chair of the Foundation. So in accordance with the goals of the chairman of the foundation, the Community Service team renovated the reading room while also equipping reading facilities such as bookshelves, reading tables, reading books as well as repairing and maintaining parts of the room that can provide comfort and increase children's reading intentions. The method of implementing this community service program includes surveys on the availability of supporting facilities for children's libraries. Arrangement of a comfortable library space for children by providing library shelves and books. As a result, the procurement of a library at the orphanage can be carried out, with facilities provided in the form of 4 bookshelves and reading books. Furthermore, the handover of goods has been carried out to the chairman of the foundation and the head of the orphanage.Keywords: Reading Interest; Renovatio; Library 
PENYEDIAAN RUANG UNIT KEGIATAN MAHASISWA (UKM) Patrick Marcell Fandy; Alfian Adie Chandra; Heri Dua Lembang; Rosalina Revassy; Handoko Handoko; Marcelino Yonas; Karl Karolus Wagab Meak; Tiper Korneles Muwarberto Uniplaita
JURNAL PENGABDIAN PAPUA Vol 7, No 1 (2023)
Publisher : LPPM Uncen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jpp.v7i1.2314

Abstract

The implementation of the construction of Unit Kegiatan Mahasiswa (UKM) room at the Faculty of Engineering, Cenderawasih University is a form of support for the appeal of the Ministry of Education, Culture, Research, and Technology (KEMENDIKBUD RISTEKDIKTI) as stated in the Guidelines for the Implementation of Student Organization Activities No. 0241/E/E2/KM.09.00/2022. Student activities under student organizations are a forum for students to develop their capacity as students in the form of aspirations, initiations, or positive, and creative ideas through participation in various relevant activities. The purpose of this service activity is to provide a UKM building for each Department Student Association (Himpunan Mahasiswa Jurusan–HMJ) as a forum for implementing student activities at the Faculty of Engineering, Cenderawasih University. The realization of the UKM building construction activities was carried out through four stages of work. First, budget design by setting a format of 80% of the total cost for the main building fund and 20% for emergency funds. Second, the design of the UKM building is adjusted to the dedicated fund. Third, procurement of materials and building worker services. Fourth, the SME building construction process. The contribution of this activity is the design and construction of the UKM building at the Faculty of Engineering, Cenderawasih University as a means for students to channel their aspirations, to develop their science and technology abilities and organizational potential.Keywords: Student activity units; student centers; learning students; student organizations; student affairs
Analisa Penyebab Penurunan Badan Jalan Di Ruas Jalan Baru Furia Kotaraja STA (0+000 – 0+520) Alfian Adie Chandra; Ira Widyastuti; Maurids Thomas Sapari
Jurnal Sipil Terapan Vol. 1 No. 1 (2023): Mei: Jurnal Sipil Terapan
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/jusit.v1i1.103

Abstract

Topography in Papua is generally an area consisting of mountains and valleys that have various slopes. Means of transportation was planned in such a way that it had to go through the slope. One of them is on the New Furia Kotaraja road section. On this road section, the slope is cut so that the road is made safe and comfortable for motorists to pass. However, at several points there was damage to the road body which was identified as a landslide, namely the formation of an avalanche crown on the surface of the road body. Therefore it is necessary to analyze the stability of the slopes in order to obtain ways to overcome them. Analysis of slope stability on the New Furia Kotaraja road section used the GeoStudio 2007 Slope/W assist program and manually used the Fellenius method. From the analysis that has been carried out, given the condition of the road load and pore water pressure, it can be concluded that the slopes on the New Furia Kotaraja road section Km 0+000 – 0+520 are unstable slopes because according to the results of the calculation of the slope safety factor based on the Fellenius formula, namely 0.589, according to Bowles, the slope is unstable if the factor of safety is less than 1.07. Thus, the slopes on the Baru Furia Kotaraja Km 0+520 road section need to be treated in the form of a box cover / culvert, with a surface depth of 280 cm box coler because at that depth it has a rather dense soil type, silty sand, and a channel is also planned. square type drainage with dimensions (b = 2.00 ; h = 1.70 m ) to drain water discharge (Q = 0.68 m3/s), the slope becomes stable because the slope safety factor changes to 1.259 which according to Bowles's opinion the slope is included stable when the factor of safety is above 1.25.
Identifikasi Kedalaman Muka Air Tanah dan Posisi Akuifer di Kabupaten Tolikara Frans Polangco Wambena; Alfian Adie Chandra; Dewi Ana Rusim
Jurnal Sipil Terapan Vol. 2 No. 2 (2024): November : Jurnal Sipil Terapan
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/jusit.v2i2.494

Abstract

Groundwater is dynamic and influenced by a number of natural factors. Geology and geomorphology greatly determine the condition of the soil in an area. The geological structure influences the direction of groundwater movement, the type and thickness of the aquifer. The Karubaga District in Tolikara Regency is an area with a morphology of mountains, hills and valleys so it has the potential for rivers and streams that can be used as a source of raw water. Identification of the depth of the groundwater level in the Karubaga District is carried out using tools in the form of the AIDU Golden Rod (AGR), which is a special geophysical study instrument that provides a detailed vertical picture 300 m into the ground surface to read the resistivity values of rocks and aquifers by measuring the natural electric field
Stabilisasi Tanah Lempung dengan Campuran Fly Ash dan Serbuk Batu Karang terhadap Nilai CBR Try Sunanda Fathanah; Duha Awaluddin Kurniatullah; Alfian Adie Chandra
Jurnal Sipil Terapan Vol. 2 No. 2 (2024): November : Jurnal Sipil Terapan
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/jusit.v2i2.379

Abstract

Clay soils generally have low bearing capacity and are vulnerable to the water. Therfore, stabilization is necessary as an effort to increase the bearing capacity and improve the other parameters, one fo them by adding other materials such as fly ash and coral limestone powder as done in this research. The purpose of this research is to understand the effect of fly ash and coral limestone powder addition to the bearing capacity of clay soils after compaction process in term of CBR value by adding 15% fly ash and 0%, 10%, 20%, 30% coral limestone powder variations. The analysis results show that the original soil is an inorganic clay with 47,84% plasticity index. By adding fly ash and coral limestone powder variations decreases the plasticity index value to the lowest value 20,23%. The specific gravity increased on the 15% fly ash addition from 2,63 to 2,868 and decreased along with coral limestone powder addition to the lowest value 2,556. The maximum dry density decreased by adding 15% fly ash from 1,465 gr/cm3 on the original soil to 1,450 gr/cm3 and increased along with coral limestone powder addition to the highest value 1,522 gr/cm3. The optimum moisture content decreased along with the fly ash and coral limestone powder addition from 26,80% to 20,50%. The CBR value increased from the lowest value 0,47% to the highest value 15,29%.
Evaluasi Kegiatan Cetak Sawah pada Kampung Linggua Distrik Mambioman Bapai Kabupaten Mappi Deliana Mangisu; Alfian Chandra; Davy Jansen; Rahmat Rahmat; Valan Valan
Jurnal Pengabdian Masyarakat Sains dan Teknologi Vol. 3 No. 4 (2024): Desember : Jurnal Pengabdian Masyarakat Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/jpmsaintek.v3i4.615

Abstract

Food sovereignty is one of the main programs of the Indonesian government at this time. Food sovereignty must start from gradual food self-sufficiency followed by an increase in the added value of agricultural businesses that are widely used to improve the welfare of farmers. Some of the obstacles include land status, land to be printed is recorded as a forest area, water sources do not yet have adequate irrigation networks. The purpose of this service is to evaluate the achievement of the rice field printing program, analyze obstacles in achieving the program to re-optimize rice field printing land. The methods used are the Survey Preparation Stage, Survey Stage, Investigation Stage and Evaluation Stage and Report Preparation. The results obtained are: the rice field printing program only reached 10 hectares of the expected 200 hectares or only reached 5%, so real follow-up action is needed from the recommended steps, namely: increasing PPL, improving irrigation networks, adding facilities and infrastructure, and rice fields are used as secondary crops. Although there are obstacles faced, they can be resolved well.
Location Selection and Design of Wasi River Intake Jayawijaya Regency Jansen, Davy I. Robert; Rusim, Dewi Ana; Safanpo, Apolo; Setiawan, Firman; Chandra, Alfian Adie
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 12 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i12.1365

Abstract

The availability of clean water in Wamena City is a target for fulfilling local government development. In the suburbs, a Public Hydrant (HU) in the Sinakma area has been constructed to meet the community's clean water needs. The fulfillment of clean water needs for network distribution has also existed in Wamena City which was built in 2016 sourced from the Walesi River with the construction of a reservoir in the Napua area, but the distribution was disrupted because the Napua Intake was damaged by landslides. However, due to the condition of landslides and logging that are quite a lot in the upstream area, currently the intake does not function and affects the distribution of water in Wamena City. In 2023, an Intake and several reservoirs with the Wasi River water source in Walesi District have also been built, which are expected to meet the city's water needs. But in reality, the building has not been able to meet the needs of clean water because it cannot capture the flow of water properly.
Intake Planning in Loma River, Tolikara Regency Wayangkau, Helen Gianditha; Azis, Amaliah; Chandra, Alfian Adie; David, David; Robert Jansen, Davy I.
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 12 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i12.1366

Abstract

The provision of clean water in Karubaga City has been hampered by inadequate piping distribution networks, forcing reliance on drilled wells in villages. This study aims to address the problem of inadequate clean water facilities by planning an effective water intake system for the Loma River in Tolikara Regency. Using a combination of quantitative and qualitative methods, the research analyzed hydrological data, intake hydraulics, and the structural stability of intake buildings. Results indicate that the Loma Intake requires significant rehabilitation due to sediment deposition, while the Palagi Intake needs an evaluation of the pipeline network to improve flow pressure and distribution. The study concludes that redesigning and constructing efficient water intake systems is crucial to meeting the community's clean water needs while mitigating health risks from water pollution.
Co-Authors Agung Saputra Ahmad Gifary Alfrendy Lolopayung Azis, Amaliah Bahtiar Bahtiar Bernathius Julison David David Davy Ivan Robert Jansen Deliana Mangisu Duha Awaluddin Kurniatullah Enjelo Sio’ Frans Polangco Wambena Handoko Handoko Heri Dua Lembang Ira Widyastuti Jansen, Davy I. Robert Jonly Sonny Watie Karl Karolus Wagab Meak Marcelino Yonas Maurids Thomas Sapari Mujiati Mujiati Novianto Novianto Patrick Marcell Fandy Rahmat Rahmat Robert Frans Horik Robert Jansen, Davy I. Roberth Frans Horik Rosalina Revassy Rusim, Dewi Ana Safanpo, Apolo Setiawan, Firman Tiper Korneles Muwarberto Uniplaita Try Sunanda Fathanah Valan Valan Wayangkau, Emilyano Joel O. Wayangkau, Helen Giandita