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Kajian Kinerja Bagian Jalinan (Studi Kasus : Jl. Niaga 1 – Jl. Yos Sudarso, Kota Tarakan) Syarif, Iif Ahmad; Prasetya, Noerman Adi; Aidil, Rahmad; Faizal, Rahmat; Utomo, Edy; Hernadi, Ahmad
Borneo Engineering : Jurnal Teknik Sipil Volume 1, Nomor 2, Desember 2017
Publisher : Jurusan Teknik Sipil

This study aims to determine the performance on a single weave that occurred on Jl.Niaga I - Jl. Yos Sudarso, Tarakan City. The performance is capacity, degree of saturation, speed, and travel time. With these performance parameters serve as based of planning in transportation infrastructure. The results of this study are also expected to provide recommendations to users, planners and policy makers in an effort to solve traffic problems, especially to reduce the delay that occurs in a single wave that occurred on Jl Niaga I-Jl. Yos Sudarso Kota Tarakan.

nalisis Kuat Tarik Kayu Menggunakan PKKNI 1961 dan SNI 7973:2013 Hernadi, Ahmad; Prasetya, Noerman Adi; Aidil, Rahcmad
Borneo Engineering : Jurnal Teknik Sipil Volume 1, Nomor 2, Desember 2017
Publisher : Jurusan Teknik Sipil

Use of wood construction in Indonesia is decrease significant than concrete and steel. While it is, government by National Standardization Corporation (BSN) had been published Indonesian National Standard about Wood Construction Design Spesification with code SNI 7973:2013. This code absolutly influential the old code which is PKKNI 1961. SNI 7973:2013 is regulate about Load esistance Factor Design (LRFD) and Allowable Stress Design (ASD), while PKKNI 1961 just use ASD method. In case SNI 7973:2013 have been use ASD, but it is different to PKKNI 1961. This research is would to find the different betwen SNI 7973:2013 and PKKNI 1961 to tension member with dimention 5/10, 6/12, 8/12 and 10/10. Result of research to tension member show that LRFD 100%, ASD 65,1% and PKKNI 111,4%.

Sandwich Plate System (SPS) with Polyurethane Elastomer for Submerged Floating Tunnel (SFT) Hernadi, Ahmad; Suswanto, Budi
IPTEK Journal of Proceedings Series No 1 (2017): The 2nd International Conference on Civil Engineering Research (ICCER) 2016
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i1.2199

Submerged Floating Tunnel (SFT) i.e. Archimedes Bridge (AB) is a tubular structure that floats at a certain depth below the surface of the water carrying capacity exploiting derived from Archimedes lift. Various studies have been conducted on SFT but but no SFT has been constructed yet. The most important for design and build for SFT is the section. Research for the tube section of SFT has been doing for oval and circle shape with steel and concrete for the material, the conclusion is the section of the steel material with a circle is better than the cross section of the concrete. The section of SFT, which is identical to the vessel so that it is suitable when applied methods used on ships. One method that was developed in the vessel is Sandwich Plate System (SPS). SPS is a lightweight material that consists of two steel plates separated by a core in the form of elastomer. Elastomers which began much studied at the SPS is polyurethane. SPS advantage with polyurethane as the core has many advantages such as resistance to chemical reactions seawater, vibration and noise as well as strong against explosions.The tube shape is circle where inside diameter is 5 m, length is 150 m. Wave height is 5 m and wave period is 1.2 s with seabed -20m. Wave load will be applied to the tube as hydrostatic wave load arround the tube and dynamic wave load to the one side. Anlysis using Abaqus 6.14 and obtain the maximum and minimum stresses in x, y and z direction occure to the hole of cable in the belt and yied at the point. Maximum deflection in z direction is 83.466 mm in the same direction of load and y direction is 9.83 mm to the up side. Increament the step time makes the displacement is increase too.

PERANCANGAN BALOK BETON BERTULANG GEDUNG PRODI KEDOKTERAN UNIVERSITAS BORNEO TARAKAN DENGAN SISTEM RANGKA PEMIKUL MOMEN Alstony, Zikri; Hernadi, Ahmad
Civil Engineering Scientific Journal Vol 2, No 1 (2023): Civil Engineering Scientific Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/cesj.v2i1.3334

ABSTRACT: Borneo Tarakan University plans to open a medical study program in 2023. So, a building is needed that is able to support all lecture activities. The building structure is expected to be able to withstand gravity loads and earthquakes, so that each component must be designed to have high ductility. One of the important components in the planning of earthquake-resistant reinforced concrete structure buildings, especially those using special moment resisting frame systems (SMRF), namely beams. Beams must be designed using the latest standards, namely SNI 2847-2019. The entire beam design uses K-300 concrete quality and uses BJTS-420 quality steel for longitudinal and BJTS-280 for stirrups. The design results obtained on the main beam longitudinal reinforcement using a diameter of 19 mm (deform) and shear reinforcement consisting of 4 legs with a diameter of 10 mm (deform). Meanwhile, in the joist elements the longitudinal reinforcement uses a diameter of 19 mm and the shear reinforcement consists of 2 legs with a diameter of 10 mm.Keywords: Beam, Medical Study Program, Longitudinal Reinforcement, Transversal Reinforcement, Special Moment Resisting Frame System. ABSTRAK: Universitas Borneo Tarakan berencana membuka program studi kedokteran pada tahun 2023. Sehingga, diperlukan sebuah gedung yang mampu mendukung berjalannya segala aktivitas perkuliahan. Struktur gedung diharapkan mampu menahan beban gravitasi dan gempa, sehingga setiap komponennya harus direncanakan memiliki daktilitas yang tinggi. Salah satu komponen penting dalam perencanaan gedung struktur beton bertulang tahan gempa khususnya yang menggunakan sistem rangka pemikul momen khusus (SRPMK) yaitu balok. Balok harus didesain dengan menggunakan standar terbaru yaitu SNI 2847-2019. Desain balok seluruhnya menggunakan mutu beton K-300 dan menggunakan baja tulangan mutu BJTS-420 untuk longitudinal dan BJTS-280 untuk sengkang. Hasil desain diperoleh pada balok induk tulangan longitudinal menggunakan diameter 19 mm (Ulir) dan tulangan geser terdiri 4 kaki dengan diameter 10 mm (Ulir). Sedangkan, pada elemen balok anak tulangan longitudinal mengunakan diameter 19 mm dan tulangan geser terdiri dari 2 kaki dengan diameter 10 mm.Kata kunci: Balok, Program Studi Kedokteran, Tulangan Longitudinal, Tulangan Geser, Sistem Rangka Pemikul Momen Khusus

DESAIN HUBUNGAN BALOK-KOLOM GEDUNG 9 LANTAI MENGGUNAKAN SNI 2847:2019 DAN SNI 1726:2019 (Studi Kasus: Gedung Fakultas Keguruan dan Ilmu Pendidikan Universitas Borneo Tarakan) Swasanto, Harfri; Hernadi, Ahmad
Civil Engineering Scientific Journal Vol 2, No 2 (2023): Civil Engineering Scientific Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/cesj.v2i2.3880

ABSTRACT : Design of beam-column connections needs to be planned by assuming plastic joints at the beam and column base also in reducing structural failure at the joint when cyclic earthquake loads occur. Designed a 9-story building with a total height of 37 m using a dual system and earthquake resistant element design with SNI 2847: 2019, SNI 1726: 2019, and SNI 1727: 2020. The primary data of soil case study data from boring results in 2011, the average value of N Ì… = 13.309 15, namely the soft soil site class (SE) in boring hole 2, KDS IV-D value SDS = 0.558 and SD1 = 0.4185. Concrete compressive quality K-350 Kg/m3, steel grade using BjTS 420 MPa. Seismic design permits using response spectrum analysis of irregular frequency results, Failure mechanism of the frame to bear lateral loads 33% (x-direction), 37% (y-direction) and structural walls 67% (x-direction), 63% (y-direction), fundamental frequency of the structure 1.504 seconds percentage 70.8% (UY) and 1.437 seconds percentage 59.7% (UX), number of variations 90% mode 10 and 100% mode 45. Strong Colomn Weak Beam (SCWB) K1 1st floor against x-direction column crawl beam Mn-Column = 3118.22 kNm 1.2, Mn-Beam = 156.97 kNm and y-direction Î£Mn-Column = 2681.76 kNm Î£1.2Mn-Beam = 2245.37 kNm. The beam-column connection (HBK) reinforcement design uses diameters namely; 13mm, and 16mm, the spacing (s) in the beam-column connection uses 90mm, 130mm, and 300mm.Keywords: Beam-column connections, Design, Earthquake.ABSTRAK: Desain hubungan balok-kolom perlu direncanakan dengan mengasumsikan terjadi sendi-plastis pada balok dan dasar kolom juga dalam mereduksi kegagalan struktur pada joint ketika beban gempa berulang (siklik terjadi. Perancangan gedung 9 lantai ketinggian total 37 m menggunakan sistem ganda dan desain elemen tahan gempa dengan SNI 2847:2019, SNI 1726:2019, dan SNI 1727:2020. Data primer data studi kasus tanah hasil boring tahun 2011, Nilai rata-rata Â = 13,309 15 yakni kelas situs tanah lunak (SE) pada lubang boring 2, KDS IV-D nilai SDS = 0,558 dan SD1= 0,4185. Mutu tekan beton K-350 Kg/m3, kelas baja menggunakan BjTS 420 MPa. Gempa desain izin menggunakan analisis respons spektrum hasil kosekuensi ketidakberaturan, Mekanisme kegagalan rangka memikul beban lateral 33% (arah-x), 37% (arah-y) dan dinding struktur 67% (arah-x), 63% (arah-y), frekuensi fundamental struktur 1,504 detik persentase 70,8% (UY) dan 1,437 detik persentase 59,7% (UX), jumlah ragam 90% mode 10 dan 100% mode 45. Strong Colomn Weak Beam (SCWB) K1 lantai 1 terhadap balok merangkak kolom arah-x Mn-Kolom = 3118,22 kNm 1,2Mn-Balok = 156,97 kNm dan arah-y Mn-Kolom = 2681,76 kNm 1,2Mn-Balok = 2245,37 kNm. Desain tulangan hubungan balok-kolom (HBK) menggunakan diameter yakni; 13mm, dan 16mm, spasi (s) pada hubungan balok-kolom menggunakan 90mm, 130mm, dan 300mm.Kata kunci: Desain, Gempa, Hubungan Balok-Kolom.

PERANCANGAN KOLOM BETON BERTULANG GEDUNG PRODI KEDOKTERAN UNIVERSITAS BORNEO TARAKAN DENGAN SISTEM RANGKA PEMIKUL MOMEN Hernadi, Ahmad; Alstony, Zikri
Civil Engineering Scientific Journal Vol 2, No 3 (2023): Civil Engineering Scientific Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/cesj.v2i3.3662

ABSTRACT: The plan to open a medical study program at the Borneo Tarakan University in 2023, of course, must be accompanied by careful planning of structural components. Building elements will actually be designed using a Special Moment Resisting Frame System (SRPMK). Thus, the building is planned to have a high level of ductility against earthquake loads. One of the most important structural components, namely columns, must be designed using the latest standards, namely SNI 2847-2019. The column must be designed with the Strong Column Weak Beam concept to allow damage to occur to the beam first when the structure's ductility level against earthquake loads has been exceeded. The results of the design of the columns in the building are all using K-300 concrete quality and using BJTS-420 quality reinforcement steel for longitudinal and BJTS-280 for stirrups. Longitudinal reinforcement uses a diameter of 19 mm (screw) and shear reinforcement consists of 6 feet with a diameter of 10 mm (screw).Keywords: Column, Medical Study Program, Longitudinal Reinforcement, Transversal Reinforcement, Special Moment Resisting Frame System.ABSTRAK: Rencana pembukaan prodi kedokteran di Universitas Borneo Tarakan pada tahun 2023, tentunya harus diiringi dengan perencanaan komponen struktur yang matang. Elemen gedung sejatinya akan didesain menggunakan Sistem Rangka Pemikul Momen Khusus (SRPMK). Sehingga, gedung direncanakan memiliki tingkat daktilitas yang tinggi terhadap beban gempa. Salah satu komponen struktur yang paling penting yakni kolom harus didesain dengan menggunakan standar terbaru yaitu SNI 2847-2019. Kolom harus didesain dengan konsep Strong Column Weak Beam untuk memungkinkan kerusakan terjadi pada balok terlebih dahulu saat tingkat daktilitas struktur terhadap beban gempa telah terlampaui. Hasil desain kolom pada gedung seluruhnya menggunakan mutu beton K-300 dan menggunakan baja tulangan mutu BJTS-420 untuk longitudinal dan BJTS-280 untuk sengkang. Tulangan longitudinal menggunakan diameter 19 mm (Ulir) dan tulangan geser terdiri 6 kaki dengan diameter 10 mm (Ulir).Kata kunci: Kolom, Program Studi Kedokteran, Tulangan Longitudinal, Tulangan Geser, Sistem Rangka Pemikul Momen Khusus

PENGARUH PENAMBAHAN ABU SEKAM PADI TERHADAP SEMEN PADA PEMBUATAN BATA BETON PEJAL (STUDI KASUS 0%; 0,5%; 1%; DAN 1,5%) Roy, Roy; Hernadi, Ahmad
Civil Engineering Scientific Journal Vol 3, No 3 (2024): Civil Engineering Scientific Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/cesj.v3i3.6196

ABSTRACT : Rice husk ash is a waste product obtained from the combustion of rice husk. It contains carbon and silica compounds that influence the strength of concrete. The natural combustion process of rice husk produces active carbon compounds with an amorphous structure and extremely small pore spaces, which can form elongated gaps capable of binding free lime during the cement hydration process. This study aims to investigate the effect of adding rice husk ash as an additive on the compressive strength of solid concrete blocks. The mixture ratio used was 1 part cement to 6 parts sand, with varying proportions of rice husk ash added at 0%, 0.5%, 1%, and 1.5% by cement weight. A total of 120 samples were tested, with 30 samples for each variable. The results show that the average compressive strength of solid concrete blocks (SCB) with 0% rice husk ash is 70.31 kg/cm², classified as quality class II; SCB with 0.5% rice husk ash is 84.97 kg/cm², classified as quality class II; SCB with 1% rice husk ash is 70.32 kg/cm², classified as quality class II; and SCB with 1.5% rice husk ash is 67.57 kg/cm², classified as quality class III. The optimum variation among the mixtures for solid concrete block production is found at 0.5% rice husk ash, achieving a compressive strength of 84.97 kg/cm².Kata kunci : Rich Husk Ash, Solid Concrete Blocks, Compressive Strength ABSTRAK : Abu sekam padi merupakan limbah yang diperoleh dari hasil pembakaran sekam padi. Abu sekam padi mengandung senyawa karbon dan silika yang berpengaruh terhadap kekuatan beton, hasil pembakaran senyawa sekam padi yang alami mengandung senyawa karbon aktif memiliki struktur amorf dan ruang pori yang berukuran sangat kecil dan dapat berbentuk seperti celah panjang yang dapat mengikat kapur bebas pada saat proses hidrasi semen. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh penambahan abu sekam padi sebagai bahan tambah terhadap kuat tekan bata beton pejal. Perbandingan campuran yang digunakan ialah 1 semen : 6 pasir dengan penambahan variasi presentasi campuran abu sekam padi yaitu 0%; 0,5%; 1%; dan 1,5% terhadap berat semen. Dengan total benda uji sebanyak 120 sampel, dengan setiap variabel sampel masing-masing berjumlah sebanyak 30 sampel. Hasil penelitian ini memperoleh nilai rata-rata kuat tekan BBP 0% sebesar 70,31 kg/cm2 klasifikasi mutu II, BBP 0,5% sebesar 84,97 kg/cm2 klasifikasi mutu II, BBP 1% sebesar 70,32 kg/cm2 klasifikasi mutu II, BBP 1,5% sebesar 67,57 kg/cm2 klasifikasi mutu III. Variasi optimum pada campuran diantara BBP 0%; 0,5%; 1%; dan 1,5% pada pembuatan bata beton pejal yaitu BBP 0,5% dengan nilai kuat tekan sebesar 84,97 Kg/cm².Kata Kunci : Abu Sekam Padi, Bata Beton Pejal, Kuat Tekan

STUDY OF ECONOMIC CLASS PASSENGER RATES FOR PEOPLE TRANSPORTATION TRAVEL IN NORTH KALIMANTAN PROVINCE Bakri, Muhammad Djaya; Syarif, Iif Ahmad; Prihartanto, Eko; Hernadi, Ahmad
ASTONJADRO Vol. 10 No. 2 (2021): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v10i2.5236

Establishing North Kalimantan as the 34th province in Indonesia with the provincial capital located in Tanjung Selor, Bulungan Regency, has influenced the pattern of transportation used by society between regions. Previously, most people traveled to Tarakan city by sea transportation because Tarakan is an island city and has a strategic role regionally as a National Activity Center (PKN) in North Kalimantan. Since January 2020, the North Kalimantan Transportation Service has permitted public transportation routes to Perum DAMRI Tanjung Selor Branch to serve three round-trips (pp) routes, namely: Tanjung Selor-Malinau (TGS-MLN), Tanjung Selor-Tana Tidung (TJS-KTT), and Malinau-Salang (MLN-SLG). This study aims to find the ideal fare for public transportation for people on the route, taking into account the Vehicle Operating Cost (VOC), the ability and willingness to pay (ATP and WTP) of DAMRI Bus users, as well as the user's willingness to pay. Pay more or WTP from Contingency Valuation (WTP-CV) if you get better service during the trip. The current single-trip DAMRI Bus fare is IDR 150,000.00 for the TJS-MLN/MLN-TJS route, the TJS-KTT/KTT-TJS route is IDR 100,000.00, and for the MLN-SLG/SLG-MLN route of IDR 50,000.00. The results of the study based on the VOC obtained one-time trip rates for each route, respectively: IDR 135,633.21, IDR 119,046.86 and IDR 35,186.00. The respondents' ATP analysis results obtained a one-time trip fare for each route in a row: IDR 142,994.05, IDR 119.747.47 and IDR 63.750.00. Meanwhile, respondents' WTP was obtained for each route: IDR 110,519.48, IDR 94,545.45, and IDR 39,107.14. The respondents' WTP-CV values were also obtained on each route, amounting to IDR 14,675.32, IDR 11,409.09, and IDR 8,303.57. Considering the captive rider as an economy class passenger and the benefits of the DAMRI Bus operator, the proposed tariffs for each route are IDR 130,000, IDR 110,000, and IDR 48,000.

Pengembangan Inovasi Pengelolaan Limbah Budi Daya Rumput Laut Melalui Pemberdayaan Komunitas Menuju Desa Wisata Mandiri di Pantai Amal Kota Tarakan Hasrullah, Hasrullah; Hernadi, Ahmad; Nurdin, Muhammad Firdan; Taqwa, Amrullah
Jurnal Pengabdian Masyarakat Bangsa Vol. 3 No. 9 (2025): November
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v3i9.3442

Kawasan pesisir Pantai Amal, Kota Tarakan, menghadapi permasalahan ganda yang kompleks, melimpahnya limbah biomassa budi daya rumput laut yang belum terkelola sehingga menurunkan kualitas lingkungan, serta meningkatnya ancaman dampak perubahan iklim seperti abrasi dan cuaca ekstrem. Tujuan penulisan artikel ini adalah untuk memaparkan hasil program pengabdian kepada masyarakat (PkM) yang menawarkan solusi terintegrasi melalui pemberdayaan komunitas. Metode pelaksanaan PkM menggunakan pendekatan Participatory Action Research (PAR) yang melibatkan mitra (kelompok pembudidaya) secara aktif dalam empat tahapan: (1) analisis situasi dan identifikasi kebutuhan prioritas, (2) pelatihan dan lokakarya inovasi teknologi tepat guna untuk mengolah limbah rumput laut menjadi produk bernilai tambah, seperti pupuk organik cair, (3) implementasi aksi adaptasi perubahan iklim berbasis alam (Nature-based Solutions) melalui penanaman mangrove di zona rawan abrasi, dan (4) pendampingan penguatan kelembagaan melalui pembentukan Kelompok Sadar Wisata (Pokdarwis). Kesimpulan dari program ini menunjukkan keberhasilan signfikan, diman terjadi peningkatan pengetahuan dan keterampilan teknis mitra dalam mengolah limbah, yang dibuktikan dengan dihasilkannya dua unit produk prototipe teknologi inovasi berupa rak pengeringan tenaga surya (solar dryer portable) dan mesin pencacah biomassa (chopper). Selain itu, telah terlaksana penanaman 1000 bibit mangrove dan kegiatan aksi bersih lingkungan yang merupakan salah satu program kerja paling mendasar dan vital bagi Kelompok Sadar Wisata (Pokdarwis), yang siap merintis paket eduwisata. Program ini membuktikan bahwa sinergi antara inovasi pengelolaan limbah (circular economy) dan aksi adaptasi iklim merupakan fondasi yang kuat untuk mewujudkan Desa Wisata Mandiri di Pantai Amal.

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