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Jurnal Rekayasa Infrastruktur Hexagon
Published by Universitas Muhammadiyah Jember
ISSN : 25282379     EISSN : 25408135     DOI : https://doi.org/10.32528/hexagon
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering
Jurnal Rekayasa Infrastruktur Hexagon yang terbit sejak tahun 2016 dimulai secara offline dan daring, dengan frekuensi 2 (dua) kali dalam setahun, pada bulan Juni dan Desember. Jurnal Rekayasa Infrastruktur Hexagonadalah jurnal ilmiah yang diterbitkan secara on-line dan menerbitkan artikel atau makalah penelitian di bidang teknik sipil yang berisi artikel tentang perencanaan, pelaksanaan dan evaluasi bangunan sipil.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 20 Documents
 1   2 
Analisis Kuat Tekan dan Fleksibel Beton Serat Polyamide/Nylon dengan Campuran Serbuk Kaca Menggunakan Curing Air Laut : Compressive Strength and Flexible Strength Analysis of Polyamide/Nylon Fiber Concrete Mixed with Glass Powder Using Seawater Curing Manurung, Melki Ridwan; Hutabarat, Lolom Evalita; Setiyadi
Jurnal Rekayasa Infrastruktur HEXAGON Vol 8 No 2 (2023): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v8i2.1191

Abstract

In tropical countries surrounded by water, coastal development initiatives are unavoidable. Because chloride compounds (Cl) in seawater are corrosive to concrete and interact directly with seawater, using concrete in coastal locations requires careful consideration—adding pozzolan-like glass powder to concrete results in minimal water absorption. Nylon fiber, on the other hand, is abrasion-resistant and can boost the flexural strength of concrete. In line with SNI 7656-2012, this study used fresh and sea water to maintain test specimens 15 cm wide, 15 cm long, and 60 cm high with a design f'c strength of 25 MPa at 14 and 28 days. The compressive strength increased by 27.9 MPa, and the flexural strength increased by 29.2 MPa after 14 days and 28 days of drying in clean water with 1% fiber variation, respectively. In seawater, the compressive strength at 14 days is 26.5 MPa, the flexural strength at 28 days is 28.8 MPa, and the flexural strength at 28 days is 2,773 MPa and 3,312 MPa. Concrete cured with sea water is lower than concrete treated with fresh water. On the other hand, adding polyamide/nylon to concrete containing glass powder can reduce compressive strength loss by up to 4%.
Analisis Daya Dukung Fondasi pada Gedung Perkantoran Universitas Jambi: Foundation Bearing Capacity Analysis On Jambi University Office Building Ramadhanis, Ulfa Dayini; Dwina, Dila Oktarise; Nuklirullah, M.
Jurnal Rekayasa Infrastruktur HEXAGON Vol 9 No 1 (2024): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v9i1.1209

Abstract

Several pile caps changed shape and size due to the addition of pile columns on some pile caps of the Jambi University office building. The pre-planned pile caps depth changed to 11-19,5 m from 30 m at each point. The change was due to the existing land conditions on the field that did not support the original foundation plan. For the construction of the building to stand firm, the foundation plan must adapt to the field conditions. The research method used is the evaluation method, which performs an analysis of the foundation-bearing capacity after the occurrence of changes. It consists of three stages: the data collection stage, the analysis stage, and the decision-making stage. At the critical depth achieved, the days of axial support pressure 744,107 kN, the traction axial support power 169,16 kN, and the P6A type pillar group bearing capacity 11161,6 kN. The foundation is said to be able to withstand the upper structural load demonstrated by the results of a single pillar analysis when Qall > upper structure load worth 218.867,458 kN > 157924,94 kN and on the group pillar is said safe when the security factor obtained > the minimum security factor. The results concluded that the foundation bearing capacity analysis on Jambi University Office Building is safe and able to withstand the load of structures above the building.
Analisis Kebutuhan Angkutan Umum Rute Bekasi-Cikarang Jalur Pantura Terhadap Biaya Operasional Kendaraan (BOK): Analysis of Public Transport Needs On The Bekasi-Cikarang Pantura Route On Vehicle Operating Costs Putra, Fahri Alif; Sri Nuryati; Yulius, Elma
Jurnal Rekayasa Infrastruktur HEXAGON Vol 9 No 1 (2024): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v9i1.1210

Abstract

The Pantura Highway which connects Bekasi City and Bekasi Regency is the main acces for community mobilization, so it is necessary to optimize services and public transport needs to fulfill the Bekasi- Cikarang route of ±15,1 km. Analysis of the optimal number of fleets is carried out using the Break Event Point (BEP) method by taking into account the value of load factor, BOK, daily income and number of existing fleets based on data from field interview surveys. The research results show that the number of public transportation operating in 80 units out of 112 units. Operation time 5 hours/day with operational cost of Rp. 447.700,91/day. The load factor value is 61,7% and the average speed is 16,6 km/hour. The Bok value  for the PCI method is Rp. 4.323.695,75 per 1000 km or Rp. 652.878,-/day. The BEP value for the optimal number of fleets with the existing in currently 62 unit and for the future in 2027 it is 60 units. The optimal fleet number using the PCI BOK method is currently 43 unit and 42 unit for 2027.
ANALISIS DATA KUAT TEKAN BETON TERHADAP BENTUK SAMPEL DAN MEREK SEMEN MENGGUNAKAN METODE TWO-WAYS ANNOVA: Analysis Concrete Compressive Strength Data Sample Shape and Cement Brand Using The Two-Ways Annova Method Gunasti, Amri; Nafila, Zakya; Rifta, Azzah Iftina; F.P., Ahmad Iqbal
Jurnal Rekayasa Infrastruktur HEXAGON Vol 8 No 2 (2023): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v8i2.1260

Abstract

Infrastructure development in Indonesia has undergone significant changes in construction materials, including concrete. This study aims to analyze the influence of sample shape and cement brand on the compressive strength of concrete. The analysis utilizes a factorial experimental design approach, with two factors: sample shape (cylinder and cube) and cement brand (Gresik, Tiga Roda, Holcim, and Merah Putih) as fixed factors. The total number of samples used is 30. Concrete compressive strength data were collected at the Muhammadiyah University Jember Laboratory, with samples immersed for 28 days. The data were analyzed using the two-way ANOVA method with SPSS software. The results of the analysis show no significant difference in the influence of sample shape on concrete compressive strength (Sig. 0.397 > 0.05). However, for the cement brand factor, there is a significant difference (Sig. 0.000 < 0.05). Statistically, there is no interaction between sample shape and cement brand on concrete compressive strength (Sig. 0.570 > 0.05). The practical application of this testing and methodology in the field of Civil Engineering, particularly in concrete technology, allows for the selection of the optimal sample shape between cubes and cylinders and the determination of high-quality cement brands for infrastructure projects.
STUDI PERMODELAN RUMAH ACEH DENGAN PEMAKAIAN BAJA RINGAN SEBAGAI ALTERNATIF BAHAN KONSTRUKSI: Aceh House Modeling Study Using Light Steel as An Alternative Construction Material Satria, Andrisman; Rahman, Aulia
Jurnal Rekayasa Infrastruktur HEXAGON Vol 8 No 2 (2023): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v8i2.1317

Abstract

The traditional Acehnese house, known as "rumoh Aceh," is a precious cultural heritage that has become an architectural icon of the region. However, their vulnerability to earthquakes and tsunamis has prompted research into the use of alternative construction materials to improve the seismic resistance of Acehnese houses. This study aims to assess the comparison of internal forces occurring in Acehnese houses with mild steel construction as an alternative construction material, using the response spectrum method. The study adopted a quantitative approach and sampled Acehnese houses covering a wide range of types and ages. Data on house characteristics, including design, construction materials, Furthermore, computer models of Aceh houses with mild steel construction and conventional Aceh houses were analysed using the response spectrum method. The results showed that Acehnese houses with C75 mild steel construction showed that the internal forces obtained gave unsafe design results with the single cross-section so that larger dimensional changes to the double cross-section were required. Spectrum response analysis provides a better understanding of how mild steel construction can reduce the risk of earthquake damage. The findings indicate that the use of mild steel as an alternative construction material in Acehnese houses is a viable option to improve earthquake resistance, preserve their cultural heritage, while protecting lives and property.
EVALUASI JARINGAN IRIGASI SALURAN SEKUNDER NGABEAN KABUPATEN NGAWI PADA D.I. SALURAN INDUK MADIUN: Evaluation Of Ngabean Secondary Canal Irrigation Network, Ngawi District On Saluran Induk Madiun Irigation Area Dewi Nusantara, Danayanti Azmi; Poppy Fajar Putri Hartiningsih
Jurnal Rekayasa Infrastruktur HEXAGON Vol 9 No 1 (2024): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v9i1.1634

Abstract

Ngabean Secondary Canal which is located in Ngawi Regency receives main water supply from Jati Dam amounting to 25% of the main dam discharge and water withdrawal from the Ngabean Dam intake of 0.45 m3/ha. However, this value does not meet the water needs of the entire irrigation area. Apart from that, the Ngabean Secondary Canal also experienced a reduction in the irrigation area from 1840 ha to 1818 ha. From the results of the analysis that has been carried out, in conditions before rehabilitation, the highest dependent flow of Jati Dam was 1.01 m3/s and the lowest was 0.00 m3/s with water withdrawal at the intake of 25%, able to fulfill the planting pattern of paddy(15%)-crops(75%)-crops(50%) generated a production profit of IDR 8.794.123.880,00. Meanwhile, after rehabilitation, the highest was 5.93 m3/s and the lowest was 3.21 m3/s with an intake of 32%, able to fulfill the planting pattern of paddy(100%)-paddy(100%)-paddy(100%) resulting in a production profit of IDR 83,564,115,480.00 with the highest irrigation water requirement value of 3.10 m3/sec. Apart from that, the existing canal dimensions still meet the requirements after land reduction so that no changes to the canal dimensions are required.
Analisis Faktor Keterlambatan Proyek Konstruksi Gedung di Kabupaten Purworejo: Analysis of Delay Factors for Building Construction Project in Purworejo Regencey Setyaning, Larashati B'tari; Nusantoro, Agung; Pratama, Sukma Adi
Jurnal Rekayasa Infrastruktur HEXAGON Vol 9 No 1 (2024): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v9i1.1714

Abstract

Basically, construction projects cannot be free from existing obstacles that can cause delays in ongoing projects. Work that experiences problems can cause delays and result in losses and various methods are taken to avoid problems that result in delays and losses. The aim of this research is to analyze the factors that cause delays in construction work on building construction projects in Purworejo Regency and analyze the correlation or relationship between these factors. In this research, data processing uses Exploratory Factor Analysis (EFA) analysis for correlation or relationship between factors causing delays in building construction projects in Purworejo Regency. A set of questionnaires was used to obtain the required primary data. Exploratory factor analysis techniques are used to identify existing latent variables. Questionnaires were obtained from 40 people consisting of contractors, supervisory consultants and owners involved in this research. The results of the research explain that five factors influence delays in building construction projects in Purworejo Regency, namely auction process factors and non-technical events, inappropriate technical planning, accuracy factors in the amount of material sent, communication and coordination factors, equipment productivity factors.
A Metode Analisis Interaksi Tanah Struktur yang Diusulkan dengan Pertimbangan Respon Elastis Tanah: Metode Analisis Interaksi Tanah Struktur yang Diusulkan dengan Pertimbangan Respon Elastis Tanah Priyono, Pujo; Alihudien, Arief
Jurnal Rekayasa Infrastruktur HEXAGON Vol 9 No 1 (2024): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v9i1.1892

Abstract

The soil structure-interaction analysis method is a structural analysis method in which the structure and foundation are treated as a complete structural system. Until now, the concept of analysis was that soil was idealized as a set of springs that had a unit value of foundation modulus obtained from the assumption that the ground contact stress was linear (evenly distributed). The fact is that for relatively rigid structural systems, ground contract tension is not linear. This study aims to examine whether there is a difference in the internal forces on structural element elements as a result of the analysis of structure-soil interaction assuming this ground contact stress (evenly distributed), when compared with the results of the ground-structure interaction analysis by taking into account the inlinearity of the contact stress. Research using computer aids and computer programs (SAP2000). Examples of structures were chosen that were symmetrical with the load distribution altered in such a way as to obtain values of ratios between the vertical reaction at the outermost pedestal (Rt) and the vertical reaction at the innermost pedestal (Rd) of 0.6, 0.5 and 0.4. The soil condition chosen is a type of clay soil with two kinds of conditions, namely soft and medium tanaah. The results show that whether the soil conditions are soft or moderate, most moments in an element image make a significant difference to all Rt/Rd values.
ANALISA KERUSAKAN JALAN MENGGUNAKAN METODE SDI (STUDI KASUS RUAS JALAN DI KABUPATEN SUMBAWA): Road Damage Analysis Using SDI Method of Road Sections in Sumbawa District Anwar Efendy; Cholid Zulfikan, Aan; Wahyuningsih, Titik; Isfanari, Isfanari; Sasmito, Sasmito; Wahyudi, Mudji; Fitrayudha, Adryan
Jurnal Rekayasa Infrastruktur HEXAGON Vol 9 No 1 (2024): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v9i1.1918

Abstract

Roads have an important role in every regional development, especially in Sumbawa Regency. As many as 20 roads in Sumbawa Regency, specifically in Lopok District and Plampang District, were damaged due to repeated excessive traffic loads. This research aims to determine the level of damage to road conditions using the SDI (Surface Distress Index) method so that researchers can evaluate and find out what alternatives will be used to improve the condition of damaged roads. The results of the research are that STA 0+300 to 0+320 experienced serious damage, the type of treatment on this road section was road reconstruction. Meanwhile, STA 0+000 to 0+300, STA 0+320 to 0+500, and STA 0+760 to 0+800 experienced light damage, the type of treatment on these road sections was road rehabilitation. However, most of the roads in Lopok District and Plampang District, Sumbawa Regency are in good condition, seen at STA 0+500 to 0+760 and STA 0+800 to 1+100.
Analisa Parkir On Street Progresif pada Penerapan QRIS Di Jalan Jendral Ahmad Yani Jember: Analysis of Progressive On Street Parking on the Implementation of QRIS on Jalan Jendral Ahmad Yani, Jember Sudahnan, Mytha Dwi; Hamduwibawa, Rofi; Abadi, Taufan; Amijaya, Jimi
Jurnal Rekayasa Infrastruktur HEXAGON Vol 9 No 1 (2024): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v9i1.2052

Abstract

The economic growth in Madiun City make shows good development has made Guest House entrepreneurs start to experience an increase. One of them is the construction of Guest House A. To find out that the investment is considered feasible, it is necessary to carry out a feasibility study analysis from an economic perspective by considering several indicators, including the Net Present Value, Net Benefit Cost Ratio, Internal Rate of Return, and Back Period. From the calculations that have carried out, the NPV value is 1,053,103,006.39, the Internal Rate of Return is 12,60%, the Benefit of Cost is 2.13, with a Payback Period of 10.93 Years. From the existing analysis, the NPV is more than zero for IRR value is greater than the MRR value, and the B/C value is greated than one, with existing indicators concluding that the investment can be continue

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