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Kajian Eksperimental Peningkatan Kinerja Kuat Lentur Sambungan Ordinary dan Extended End Plate Panjaitan, Arief; Hasibuan, Purwandy; Afifuddin, Mochammad; Bermansyah, Surya; Haiqal, Muhammad
Jurnal Teknik Sipil Vol 32 No 2 (2025): Jurnal Teknik Sipil - Edisi Agustus
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2025.32.2.2

Abstract

Abstrak Sambungan pelat ujung (end plate connection) adalah sambungan semi kaku yang secara umum digunakan untuk menghubungkan balok-kolom. Salah satu alternatif untuk meningkatkan kapasitas lentur sambungan adalah memperluas area sambungan pelat ujung. Namun, upaya yang dilakukan tersebut butuh dievaluasi lebih lanjut. Penelitian ini bertujuan untuk menginvestigasi kuat lentur sambungan pelat ujung dengan memberikan beberapa perkuatan yaitu penambahan area sambungan, pemasangan pengaku pelat badan, dan perpanjangan penyokong di area bawah balok. Untuk mengevaluasi signifikansi perkuatan, benda uji tanpa perkuatan (ordinary end plate connection) digunakan sebagai acuan. Penelitian dilakukan melalui pemberian beban geser yang ditempatkan pada 400 mm dari sambungan dan beban ditingkatkan secara bertahap hingga benda uji gagal. Kajian eksperimental menunjukkan benda uji dengan kombinasi perkuatan berupa penambahan area sambungan dan penambahan pengaku badan memberikan kuat geser dan lentur yang paling baik. Kajian teoritis mengacu ke SNI 03-1729-2020 menunjukkan kuat lentur nominal lebih kecil dibandingkan kuat lentur eksperimental. Hal ini menunjukkan kajian teoritis memberikan kuat lentur lebih konservatif. Kata-kata Kunci: Sambungan pelat ujung, sambungan ordinary end plate, sambungan extended end plate, kuat lentur, kuat geser, deformasi Abstract An end plate connection is a semi-rigid connection used to connect a beam to a column. One alternative to improve the flexural strength is to enlarge the end plate connection area. However, this strengthening approach needs to be more specifically investigated. This study aims to evaluate the flexural strength of the connections by several strengthening methods: enlarging the connection area, installing web stiffeners, and lengthening the haunch at the bottom side of the beam. To examine the significance of strengthening approaches, an un-strengthened specimen (ordinary end plate connection) was considered as the reference. The research work was first carried out by positioning the shear load at a distance of 400 mm from the connection area, and it was gradually increased until the specimens failed. The experimental study also revealed that the specimen strengthened by combining an enlarged connection area and web stiffeners performed the best in terms of shear and flexural strength. The theoretical study referring to the SNI 03-1729-2020 demonstrated the nominal flexural strength, which is smaller than the experimental flexural strength. This behavior showed that the theoretical study provided more conservative flexural strength. Keywords: End plate connection, ordinary end plate connection, extended end plate connection, flexural strength, shear strength, deformation
Rancang Bangun Untuk Kontruksi Dinding Rumah dengan Bahan Bata Interlok Hayati, Yulia; Sabri; Aprilia, Cut; Malahayati, Nurul; Asyifa, Cut Nella; Munirwansyah; Afifuddin, Mochammad
Kawanad : Jurnal Pengabdian kepada Masyarakat Vol. 3 No. 1 (2024): March
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/kjpkm.v3i1.208

Abstract

The type of material, mixture composition, and production process are among the factors that influence the strength of interlock bricks. In this study, interlocking bricks are used for the construction of residential wall structures. The interlocking brick mixture consists of cement, fly ash, sand, and water. The fly ash and sand used have a maximum diameter of 4.75 mm and are not subjected to calcination. Interlocking bricks measuring 30 cm x 20 cm x 10 cm are molded using a manual hydraulic press and cured for up to 28 days before being cut into test specimens measuring 5 cm x 5 cm x 5 cm. A total of 150 test specimens from 5 mix designs using water-cement ratios (WCR) of 0.3, 0.4, and 0.5 were utilized in this study. The objective of this research is to determine the quality levels of interlocking bricks based on compressive strength tests at 28 days of age. The quality levels are determined according to the Indonesian National Standard, SNI 03-0349-1989. Based on the compressive strength results, it was found that the average interlocking bricks with fly ash mixture achieved class III quality, indicating that they can only be used for non-structural wall applications.
Influence of Tides Level on Tsunami Hydrodynamic in Banda Aceh, Indonesia Tursina, Tursina; Syamsidik, Syamsidik; Kato, Shigeru; Afifuddin, Mochammad
International Journal of Disaster Management Vol 6, No 3 (2023)
Publisher : TDMRC, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/ijdm.v6i2.34538

Abstract

Tides are the dominant physical process in the coastal environment. During high tide, water from the ocean flows through the bays and estuaries, causing inundation and raising water elevation. When low tides condition, the water level becomes lower than average and recedes into the sea. This process continues for a long day. Tsunami waves will interact with all coastal processes and affect the hydrodynamic forces of tsunami waves. In the deep sea, tides do not significantly influence wave propagation. However, in the shallow water zone, tides can change tsunami heights and affect the extent of inundation. Tides are usually ignored in tsunami hazard analysis. This would be an underestimate of the tsunami hazard calculation. This study aims to investigate tides' influence on tsunami runup hydrodynamics in Banda Aceh. The potential tsunami from an earthquake in the Aceh-Andaman subduction zone is modeled using COMCOT (Cornell Multi Grid Coupled Tsunami Model) with magnitudes Mw 9.2, 8.6, and 8.2. We simulated the response of the three earthquake magnitudes on two different types of high and low tides. Several virtual gauges were placed to observe the tsunami height. Virtual gauges were also used to observe the tsunami arrival time at four tsunami escape buildings in Banda Aceh: the Ulee Lheue escape building, the Deah Glumpang escape building, the Alue Deah Teungoh escape building, and the Lambung escape building. The results show that the highest tide amplifies the tsunami inundation will be extended to about 30% farther inland compared to the condition if the tsunami occur during mean sea level condition.The interactions between tsunami and high tide significantly shorten tsunami arrival time on small magnitude tsunamis and are not significant in a large tsunami. This information is useful for enhancing early warning systems and evacuation procedures that can be adjusted to the tidal conditions in the study area.
EVALUASI SISTEM PROTEKSI BAHAYA KEBAKARAN PADA GEDUNG BADAN PENANGGULANGAN BENCANA ACEH Aramiko, Winardi; Afifuddin, Mochammad; Munir, Abdul
Teras Jurnal : Jurnal Teknik Sipil Vol. 11 No. 2 (2021): Volume 11 Nomor 2, September 2021
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v11i2.484

Abstract

Abstrak Kantor Badan Penanggulangan Bencana Aceh (BPBA) merupakan Kantor Pemerintah yang memberikan pelayanan kepada masyarakat dalam pelaksanaan kegiatan penanggulangan bencana secara terencana, terpadu, dan menyeluruh dalam tahapan prabencana, saat tanggap darurat, dan pasca bencana. Salah satu hal yang penting dalam penanggulangan kebakaran adalah Emergency Response. Emergency Response dapat diartikan sebagai kecepatan penanganan kebakarannya, sebagai upaya pencegahan dan penanggulangannya agar manusia, bangunan gedung dan lingkungannya terhindar dari bahaya kebakaran yang lebih luas. Metode yang digunakan mix method menggabungkan antara kualitatif dan kuantitatif dengan pengumpulan data yaitu menggunakan data sekunder berupa peta kota Banda Aceh, Layout Gedung Kantor BPBA, Literatur-literatur, Permen PU, Jurnal yang berkaitan dengan penelitian ini dan data primer yang terdiri dari pengamatan terhadap kondisi Kantor BPBA, wawancara, kuesioner.  Responden yang digunakan adalah semua pegawai yang bekerja di Kantor BPBA berjumlah 115 orang dikurangi pilot study 30 orang. Dari analisis data penelitian terhadap 26 (dua puluh enam) variable dapat dijelaskan bahwa ada 7 (tujuh) variable yang mendapat skor kecil atau kurang baik dan dapat diartikan bahwa pada bagian variabel tersebut butuh perhatian untuk dilakukan perubahan. Strategi yang dapat dilakukan berdasarkan analisi SWOT adalah membentuk tim siaga tanggap darurat kebakaran yang dibekali dengan pendidikan dan pelatihan secara terencana terpadu dan menyeluruh; menyusun Standar Operasional Prosedur (SOP) penanggulangan bencana kebakaran berdasarkan peraturan perundang-undangan; melakukan simulasi kebakaran gedung secara rutin dan kontinyu; serta memperkuat sistem proteksi aktif lainnya diantaranya adalah membuat hidran air, alarm kebakaran dan smoke detector. Kata Kunci: Bencana, Emergency Response, Sistem Proteksi, Penanggulangan Kebakaran  Abstract The Aceh Disaster Management Agency office is a government office that provides services to the community in implementing disaster management activities in a planned, integrated and comprehensive manner in the pre-disaster, emergency response and post-disaster stages. One of the important things in fire prevention is "Emergency Response". Emergency Response can be interpreted as the speed of handling a fire, as an effort to prevent and overcome it so that people, buildings and their environment are protected from a wider fire hazard. The methodology used is the mix method combining qualitative and quantitative data with data collection, namely using secondary data in the form of a Banda Aceh City Map, BPBA Office Building Layout, literature, Permen PU, journals related to this research and primary data consisting of observations of conditions BPBA office, interview, questionnaire. The respondents used are all employees who work in the BPBA office, amounting to 115 people minus the pilot study of 30 people. From the analysis of research data on 26 (twentysix) variables, it can be explained that there are 7 (seven) variables that score small or poorly and it can be interpreted that those variables need attention to make changes. A strategy that can be carried out based on a SWOT analysis is to form a fire emergency response team that is equipped with education and training in an integrated and comprehensive plan; prepare Standard Operating Procedures (SOP) for fire disaster management based on statutory regulations; conduct building fire simulations routinely and continuously; as well as strengthening other active protection systems, including making water hydrants, fire alarms and smoke detectors. Keywords: Disaster, Emergency Response, Protection System, Fire Prevention
Application of Islamic Values in Improving The Economy at Senduro Lumajang Market Through Local Wisdom Afifuddin, Mochammad
Proceedings of Annual Conference for Muslim Scholars Vol 8 No 1 (2024): AnCoMS, Oktober 2024
Publisher : Koordinatorat Perguruan Tinggi Keagamaan Islam Swasta Wilayah IV Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36835/ancoms.v8i1.608

Abstract

Senduro Market, located in Lumajang District, is a bustling hub of economic activity. This research aims to explore how local wisdom and Islamic values shape buying and selling interactions in this market. By employing a qualitative field research approach, including direct observation and participatory observation, the study aims to understand the role of local knowledge in fostering harmony and tolerance among market participants. The findings reveal that local wisdom, such as mutual cooperation and deliberation, combined with Islamic economic values, like honesty, fairness, and respect, play a crucial role in maintaining strong social relations within the market community.