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All Journal Jurnal Ilmu Lingkungan Jurnal Teknik Techno.Com: Jurnal Teknologi Informasi Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Teras Jurnal JURNAL SIMETRIK IJEBD (International Journal Of Entrepreneurship And Business Development) Jurnal Serambi Engineering Spatial : Wahana Komunikasi dan Informasi Geografi Jurnal Teknik Sipil dan Teknologi Konstruksi CLAPEYRON: Jurnal Ilmiah Teknik Sipil Prosiding Seminar Nasional Teknik Sipil UMS Jurnal Pengabdian Khairun
Rauf, Ichsan
Program Studi Teknik Sipil Universitas Khairun
Religion Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Transportation

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STUDI EKSPERIMENTAL PENGARUH RADIUS PILAR MASSIF TERHADAP POLA GERUSAN LOKAL Anwar Anwar; Dandi Wahab; Ichsan Rauf; Kusnadi Kusnadi; Zulkarnain K. Misbah
JURNAL SIMETRIK Vol 11, No 2 (2021)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/js.v11i2.830

Abstract

Gerusan lokal pada pilar jembatan menjadi salah satu penyebab instabilitas pada struktur jembatan yang berpotensi terhadap kegagalan struktur jembata. Keberadaan pilar yang menopang struktur atas jembatan di badan sungai menyebabkan terjadinya perubahan pola aliran sehingga erosi pada dasar sungai tidak dapat dihindari. Oleh karena itu, upaya untuk mereduksi besaran gerusan lokal harus menjadi perhatian dalam perencanaan struktur pilar, seperti dengan menentukan bentuk geometri pilar jembatan. Penelitian ini bertujuan untuk mengetahui pengaruh radius pilar terhadap potensi gerusan lokal yang terjadi di sekitar pilar tersebut melalui ekperimen di laboratorium. Bentuk pilar yang digunakan adalah pilar massif dengan hidung pilar (pier-nose) berbentuk bulat dengan jari-jari (r) yang bervariasi dari 1;1,5 dan 2. Penampang saluran yang digunakan memiliki panjang 7400 mm, lebar 280 mm dan tinggi 400 mm. Kondisi aliran yang digunakan adalah aliran seragam permanen (steady uniform flow) dengan dua variasi debit, sementara kemiringan dasar saluran yang digunakan tetap sebesar 0.6%. Hasil penelitian ini menunjukkan bahwa semakin besar radius hidung pilar maka akan semakin kecil gerusan lokal yang terjadi, adapun debit memberikan pengaruh sebaliknya.
Karakteristik Mekanis Material Geokomposit Ringan Tanah – EPS Stabilisasi Fly Ash Ichsan Rauf; Tri Harianto; Ardi Arsyad; Astiah Amir
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 7, No 1 (2021): Jurnal Teknik Sipil & Teknologi Konstruksi
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (653.411 KB) | DOI: 10.35308/jts-utu.v7i1.3064

Abstract

This laboratory experiment intended to develop lightweight embankment material in using fly ash as a stabilized agent on soft soil and the addition of expanded polystyrenes (EPS). The fly ash derived from combustion of palm shells and tea in drinks manufacture process. In order to analyze the performance of this material, compressive strength test were applied to several composition and treatment on each sample. The samples were prepared with composition of binding agent between 3%, 5%, 10% and 15% based on samples weight, meanwhile the addition of EPS with composition 10% and 20% based on samples volume. The results presented that the highest compressive strength were founded at 5% of POFA, further it is noted that the inclusion of EPS as a soil subtitution decrease the compressive strength. While, the curing periods have a significance effect on the engineering properties of lightweight materials. 
Analisis Spasial Tingkat Bahaya Banjir Desa Amasing Kali Dengan Hec-RAS 2D Ichsan Rauf
Jurnal Teknik Vol 19 No 2 (2021): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v19i2.188

Abstract

The phenomenon of flooding that occurs in various parts of the world continues to increase, both in terms of frequency and amplitude. Without neglecting the morphology of the region, global climate change and changes in land use as a result of economic growth are the main factors causing this disaster. Understanding flood characteristics, be it discharge, inundation height, and their distribution in an area is very important as a basis for determining flood control efforts. This study aims to analyze the level of flood vulnerability based on the characteristics of the occurred floods. Hydrological and topographical analyzes were performed as the basis for the flow hydraulics calculations performed with Hec-RAS 2D version 5.0.7. The flood distribution simulation results with return periods of 2, 5, 10, and 25 years show that the area of ​​the village that has the potential to be inundated is ± 22.57 ha, ± 37.11 ha, ± 41.81 ha, and ± 47.27 ha, with inundation heights varying between 0.25 m. – 1.50 m, which can be classified as low to high hazard.
Effects of Using Pumice Sand as A Partial Replacement of Fine Aggregate in Lightweight Concrete Mixtures Abdul Gaus; Mufti Amir Sultan; Raudha Hakim; Ichsan Rauf
IJEBD (International Journal of Entrepreneurship and Business Development) Vol 5 No 4 (2022): July 2022
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (347.406 KB) | DOI: 10.29138/ijebd.v5i4.1882

Abstract

Purpose: The advantage of lightweight concrete is to reduce the weight, which is considered the dead load on the structure. This study aims to determine the effect of replacing sand with pumice sand as fine aggregate in lightweight concrete. The substitution affects the compressive strength, split tensile strength, and weight. Design/methodology/approach: The research method is through testing in the laboratory, where the test specimens are cylindrical following SNI with a height of 30 cm and a diameter of 15 cm totaling 50 pieces. The composition ratio between regular and pumice sand is 75%:25%, 50%:50%, 25%:75%, and 0%:100%, respectively. Control of the test object using 100% regular sand. Findings: This research shows that adding pumice sand into the mixture decreases the volume weight. The weight of the volume of concrete produced is < 1,900 kg/m3, which is classified as a lightweight one. Research limitations/implications: The resulting compressive strength of 56.63 kg/cm2 decreased against the control test object by 81.10%. At the same time, the split tensile strength is 1.13 kg/cm2, or a decline of 52.05% from the control test object. Originality/value: This paper is an original work. Paper type: Research paper
ANALISIS KEMAMPUAN DAN KEMAUAN MEMBAYAR TARIF PADA PENGGUNA JASA MODA TRANSPORTASI KAPAL LAUT (Studi Kasus : Rute Ternate-Sanana) Dahlia Canra; Arbain Tata; Ichsan Rauf
Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Vol 10 No 2 (2022): Jurnal Ilmiah MITSU
Publisher : Fakultas Teknik, Universitas Wiraraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24929/ft.v10i2.1867

Abstract

The mode of transportation in this case is the ocean liner is an alternative transportation that is most often chosen by the public in traveling, one of which is for the Ternate-Sanana route. For this type of transportation is relatively lancer and almost every day available. There are 3 (three) ships operating in a week. One of the important factors in the management of sea transportation services is tariffs. This is the reason people use this mode of transportation, because it is considered quite affordable compared to other modes of transportation. Therefore, this study was conducted to find out Ability To Pay (ATP) and Willingness To Pay (WTP) users of sea ship transportation services with the Ternate-Sanana route. Where later it can be a consideration in evaluating the appropriate tariff. From the data that has been processed, the value of Ability To Pay (ATP) is Rp 471,722,- and the value of Willingness To Pay (WTP) is Rp 229,100,-.
KAJIAN SIMULASI BANJIR DESA DORO DENGAN APLIKASI HECRAS 2D Ridwan Ridwan; Ichsan Rauf; Kusnadi Kusnadi
CLAPEYRON: Jurnal Ilmiah Teknik Sipil Vol 3, No 2 (2022): Clapeyron : Jurnal Ilmiah Teknik Sipil
Publisher : CLAPEYRON: Jurnal Ilmiah Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/clapeyron.v3i2.5392

Abstract

Desa Doro yang telah menjadi salah satu wilayah langganan banjir di Provinsi Maluku Utara. Beberapa media local menyatakan bahwa kejadian banjir didesa ini telah terjadi sejak tahun 2018 hingga saat ini. Kejadian banjir berdampak pada kehidupan masyarakatnya serta memutus jaringan jalan Provinsi, sehingga pengendalian banjir mutlak harus dilakukan. Upaya pengendalian banjir dalam penelitian ini difokuskan pada analisis kapasitas sungai Laka sebagai system drainase alami serta pola sebaran banjir yang terjadi di desa Doro. Dalam studi ini kajian banjir dilakukan dengan beberapa pendekatan analisa, baik analisa morfometri DAS sungai Lasa, pendekatan statistic untuk analisa hidrologi yang bertujuan mentransformasi nilai curah hujan menjadi debit banjir dengan kala ulang 2, 5, 10 dan 25 tahun, serta analisa hidrolika aliran sungai Laka dengan menggunakan perangkat lunakHec-RAS 2D. Hasil penelitian ini menunjukkan bahwa debit banjir untuk kala ulang 2, 5, 10 dan 25 tahun berpotensi menyebabkan terjadinya genangan di desa Doro masing-masing seluas 3.43 ha, 4.23 ha, 4.78 ha dan 5.19 ha. Adapun validasi untuk luas dan tinggi genangan berdasarkan beberapa kejadian banjir sebelumnya menunjukkan deviasi sebesar 1.15 % terhadap model yang dihasilkan. 
Compressive Strength Characteristics of Lightweight Concrete with Modified EPS and Pumice Sand Munawwar M Nur; Kusnadi Kusnadi; Ichsan Rauf
IJEBD (International Journal of Entrepreneurship and Business Development) Vol 5 No 5 (2022): September 2022
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/ijebd.v5i5.1883

Abstract

The environmentally friendly lightweight material is a concept for developing construction material technology. One way is to reduce density by using plastic waste such as Expanded Polystyrene (EPS) as the concrete aggregate. Although on the other hand, the mechanical value has decreased significantly. This research explains the development of lightweight concrete, EPS (BREA), which uses Modified EPS waste as coarse aggregate and pumice sand as fine material, obtained locally from Tidore Island. The mixture composition used in this study was 1 Cement: 2 Sand: 3 MEPS, where the compressive strength test was carried out to see its mechanical behaviour. The research shows that the composition above reduces the volume weight and compressive strength values by 56.12% and 78.46%, respectively, compared to normal concrete.
Road Slope Stability Analysis with Limit Equilibrium Method Syamsul Syamsul; Ichsan Rauf; Kusnadi Kusnadi; Nyong Hamin
IJEBD (International Journal of Entrepreneurship and Business Development) Vol 6 No 2 (2023): March 2023
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/ijebd.v6i2.2129

Abstract

Purpose: Landslides are hydrometeorological disasters frequently occurring in many places, particularly during the wet season. Slope stability analysis is the initial stage in defining countermeasures to prevent slope failure and mitigate the negative consequences. This study aims to apply the Limit Equilibrium Method (LEM) to examine the slope stability of the Dufadufa - Jambula road, with the SLIDE version 6.0 application serving as an analytical tool. Design/methodology/approach: Researchers use field measurement data to build a slide application slope model. The soil data used as input parameters are derived using the Robertson chart to interpret the sonder test findings. Findings: According to the results, the minimal slope factor of safety (fs) at the area under consideration is 0.247. It demonstrates that the road slope, which is the study location, is in critical condition; in other words, the slope of the Jambula-Dufadufa road segment has the potential to undergo a slide. Paper type: Research paper
Analisis Faktor Keterlambatan Dominan Pada Proyek Pemeliharaan Jalan (Studi Kasus: Jalan Seksi Sp. Dodinga – Sofifi – Akelamo – Payahe – Weda) Abdul Hamid Payapo; Nurmaiyasa Marsaoly; Abdul Gaus; Ichsan Rauf; Raudha Hakim
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5762

Abstract

Road maintenance work or road preservation is very important to be carried out as a government effort to maintain the functional sustainability of the road. The delay in the implementation of this activity will not only have an impact on accessibility between regions, but will also cause losses for the contractor and project owner. The factors causing delays in the implementation of road preservation work vary widely and are different in each region. Thus, an understanding of these factors will provide important information in the management of future projects. This study conducted to analyze the dominant factors that cause the delays of road preservation projects in North Maluku, where the case study is in the Sp. Dodinga – Sofifi – Akelamo – Payahe – Weda, this road has length of ± 141 km. Respondents in the study are people who are directly involved in the implementation of this work. A statistical approach was carried out in this study, where the independent variables used included: Finance (X1), Human Resources (X2), Materials (X3), Equipment (X4), Work Implementation Methods (X5), Design Changes (X6), and Work Environment (X7), while for the dependent variable is Time (Y1). The results of this study indicate that the dominant factors influencing the timely completion of road preservation work at the study location are Finance (X1), Human Resources (X2), Materials (X3), and Equipment (X4) with a percentage value of 43.89%.
Penaksiran Kerusakan Jalan Dengan Metode Pavement Condition Index Berbasis Spasial Rizal Hafel; Nurmaiyasa Marsaoly; Ichsan Rauf
Techno.Com Vol 22, No 2 (2023): Mei 2023
Publisher : LPPM Universitas Dian Nuswantoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33633/tc.v22i2.7520

Abstract

Sarana dan prasarana transportasi memainkan peranan penting terhadap pertumbuhan sebuah wilayah. Jalan menjadi nfrastruktur yang akan menjamin konektivitas antar wilayah tetap terjadi, sehingga kualitas jalan akan menjamin kelancaran pergerakan moda transportasi yang melintas. Seiring waktu, tingkat pelayanan jalan akan mengalami penurunan, baik itu disebabkan oleh beban kendaraan, pengaruh lingkungan, maupun keausan material yang digunakan. Upaya preservasi untuk mempertahankan tingkat pelayanan jalan didasarkan pada hasil penilaian kerusakan jalan dan dinyatakan dalam sebuah indeks. Penelitian ini bertujuan untuk menganalisis kondisi perkerasan jalan yang lokusnya berada pada ruas jalan Tobelo – Podiwang, Maluku Utara. Ruas ini memiliki panjang jalan ± 48.200 m dengan lebar 6,00 m. Penaksiran kondisi perkerasan jalan ini dilakukan dengan menggunakan metode Pavement Condition Index (PCI). Adapun untuk memvisualisasikan hasil dari penilaian kondisi jalan, hasil penaksiran diintergasikan kedalam perangkat yang berbasis Sistem Informasi Geografi (SIG). Dari hasil penilaian yang dilakukan memperlihatkan bahwa secara umum ruas jalan Tobelo – Podiwang masih dalam kondisi layak digunakan. Hal ini didasarkan pada nilai indeks PCI yang diperoleh, dimana untuk sisi kiri diperoleh : 0,21% (poor), 3,94% (fair); 16,80% (satisfactory); dan 79,05% (good). Sementara untuk sisi kanan, kondisi jalan berdasarkan indeks menunjukkan 76,97% (good) dan 23,03% (satisfactory).  
Co-Authors ', Imran Abdul Hamid Payapo Alam, Yusup Iskandar Amelia, Risky Anwar Anwar Arbain Tata Ardi Arsyad Ardy Arsyad Basri, Ardi Conoras, Amrin Dahlia Canra Dandi Wahab Gaus, Abdul Hafel, Rizal Hernita Pasongli Hi Djen, Asril Imran Imran Jaelan, Salsabila Kamarullah, Suryawan Kusnadi Kusnadi Kusnadi Kusnadi Kusnadi Kusnadi Lawalenna Samang Marfu'ah, Nurul Marsaoly, Nuramaiyasa Marsaoly, Nurmaiyasa Misbah, Zulkarnain K Mochammad Imron Awalludin Mufti Amir Sultan, Mufti Amir Munawwar M Nur Najamuddin Najamuddin, Najamuddin Nyong Hamin Raudha Hakim Ridwan Ridwan Rizal Hafel Ronga, Matsiin Sabaruddin Sabaruddin Sitti Hijraini Nur Sultan Amir, Mufti Syamsul Syamsul Tri Harianto Tri Harianto Wahab, Iis Hamsir Ayub Yuda Saputra, Muhammad Taufiq Zainudin Zainudin Zamzam, Zulkifli