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Analisis Penempatan Tangga terhadap Simpangan akibat Beban Gempa dengan Metode Time History Analysis (Studi Kasus: Gedung Rawat Inap RSUD dr. Hasri Ainun Habibie) Fitri Kiayi; Kasmat Saleh Nur; Mirzan Gani
Research Review: Jurnal Ilmiah Multidisiplin Vol. 5 No. 1 (2026): Research Review: Jurnal Ilmiah Multidisiplin (Februari 2026 - Juli 2026)
Publisher : Transbahasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54923/researchreview.v5i1.305

Indonesia has a high level of earthquake vulnerability due to its location within the Ring of Fire and at the convergence of three major tectonic plates. This condition necessitates the design of earthquake-resistant multistory buildings by considering stair elements that are integrated with the main structural system. Improper stair placement may affect structural stiffness and eccentricity and increase interstory drift, potentially leading to severe damage. This study analyzes the effect of stair position on the drift of reinforced concrete building structures using 3D modeling of three stair placement configurations from previous studies. Seismic load analysis employed the Time History Analysis method using three pairs of global earthquake records: Chi-Chi, Kobe, and El Centro. The analysis focused on evaluating interstory drift values to determine whether the stair placement configurations met safety standards. The findings indicate that stair placement significantly affects interstory drift. The Chi-Chi earthquake produced the largest interstory drift in Placement 3, particularly on the second and third floors, exceeding the allowable limit of 40 mm with values of 59.20 mm (X- direction) and 46.19 mm (Y-direction). This was followed by the El Centro earthquake, whereas the Kobe earthquake resulted in the smallest interstory drift for the same configuration, remaining below the allowable limit, with values of 27.54 mm (X-direction) and 24.15 mm (Y-direction).

Analisis Variasi Tras Lompotoo Sebagai Substitusi Parsial Agregat Halus Terhadap Kuat Tekan Beton Self-Compacting Concrete (SCC) Moh. Rizky Pradana; Kasmat Saleh Nur; Komang Arya Utama
Research Review: Jurnal Ilmiah Multidisiplin Vol. 5 No. 1 (2026): Research Review: Jurnal Ilmiah Multidisiplin (Februari 2026 - Juli 2026)
Publisher : Transbahasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54923/researchreview.v5i1.307

Self-Compacting Concrete (SCC) is a type of concrete capable of flowing and consolidating under its own weight without mechanical vibration, making it suitable for structures with dense reinforcement and complex geometries. The performance of SCC is highly influenced by its constituent materials, particularly fine aggregates, which affect both workability and compressive strength. This study investigated the use of Lompotoo trass as a partial replacement for fine aggregate in SCC and its impact on workability and compressive strength. Lompotoo trass was used at substitution levels of 5%, 10%, 15%, and 20% of the total fine aggregate volume. A superplasticizer, Sika ViscoCrete 3115 N, was added at 1.5% of cement weight. Workability was evaluated through slump flow, T500 flow time, J-ring, and GTM screen stability tests based on EFNARC (2005) standards, while compressive strength was measured at 28 days. The results showed that all SCC mixtures met the required workability criteria. However, the J-ring test indicated poor passing ability (Category III) for the 5%, 10%, and 20% variations. The highest compressive strength was achieved at 5% substitution, reaching 37.16 MPa, a 23.1% increase compared to the control mixture (30.19 MPa). The 10% and 15% substitutions also improved strength by 17.4% and 12.3%, respectively, while the 20% substitution resulted in a slight decrease of 1.26%. These findings suggest that Lompotoo trass is a promising material for partial fine aggregate substitution in SCC, contributing to improved performance and sustainable concrete development.

Analisis Kuat Tekan dan Workability Beton dengan Penambahan Silica Fume dan Variasi Tras Lompotoo Sebagai Substitusi Parsial Agregat Halus Rayhan Putri Maiyo; Kasmat Saleh Nur; Komang Arya Utama
Research Review: Jurnal Ilmiah Multidisiplin Vol. 5 No. 1 (2026): Research Review: Jurnal Ilmiah Multidisiplin (Februari 2026 - Juli 2026)
Publisher : Transbahasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54923/researchreview.v5i1.308

The use of pozzolanic materials, such as silica fume and Lompotoo trass, aims to enhance concrete performance while reducing the use of sand as a fine aggregate. Lompotoo trass is a material with a high fineness, making it suitable for partial substitution for fine aggregate. This study aims to analyze the effect of adding silica fume and varying the percentage of Lompotoo trass as a partial substitution for fine aggregate on the compressive strength and workability of concrete. The testing was conducted by producing four mix variations: normal concrete and concrete with partial substitution of Lompotoo trass for fine aggregate at 25%, 50%, and 75%. Each variation of Lompotoo trass substitution was combined with the addition of 10% silica fume. In general, changes in concrete characteristics were observed across all mix variations. The slump value showed a decreasing trend as the percentage of Lompotoo trass substitution increased. On the other hand, the compressive strength of normal concrete of f’c 30.34 MPa increased to f’c 32.16 MPa at 25% trass substitution, f’c 32.97 MPa at 50% substitution, and reached f’c 36.65 MPa at 75% substitution. These results indicate that the use of Lompotoo trass combined with silica fume enhances the compressive strength of concrete, although it is accompanied by a reduction in workability.

Analisis Variasi Abu Sekam Padi sebagai Bahan Pengganti Sebagian Semen terhadap Kuat Tekan Beton SCC (Self Compacting Concrete) I Wayan Suardita; Kasmat Saleh Nur; Barry Yusuf Labdul
Research Review: Jurnal Ilmiah Multidisiplin Vol. 5 No. 1 (2026): Research Review: Jurnal Ilmiah Multidisiplin (Februari 2026 - Juli 2026)
Publisher : Transbahasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54923/researchreview.v5i1.310

Self-Compacting Concrete (SCC) is a type of concrete that can self-compact without the need for mechanical vibration, exhibiting excellent flowability. Rice husk ash is a residue produced from the combustion of rice husk ash and contains a high amount of amorphous silica, making it suitable as a partial substitute for cement in concrete mixtures as well as a filler material. Therefore,the utilization of rice husk ash in SCC presents an attractive alternative, particularly in the context of enviromentally friendly and sustainable constuction. This research aimed to analyze the effect of using rice husk ash as a partial replacement for cement on the characteriscs and compressive strength of SCC. As experimental method was employed by preparing test specimens with rice husk ash variations of 0%, 7,5%, 10%, and 12,5% by weight of cement. Based on the results of SCC characteristic tests, all variations exhibited good flowability, viscosity, and segregation resistance. However, the 7,5% and 12,5% variations showed poor passing ability (category III). The highest compressive strength was achieved at a 10% variation, reaching 39,65 MPa, which represented a 31,04% increase compared to SCC without rice husk ash (30,19 MPa). The 7,5% and 12,5% variations increased the compressive strength by 24,08% (37,46 MPa) and 6,46% (32,14 MPa), respectively compared to the rice husk ash.

Edukasi dan Pendampingan Mitigasi Bencana Tanah Longsor bagi Masyarakat Kelurahan Leato Utara, Kota Gorontalo Anton Kaharu; Faiza A. Dali; Satar Saman; Kasmat Saleh Nur; Berni Idji; Mohamad Faisal Dunggio
Nanggroe: Jurnal Pengabdian Cendikia Vol 4, No 9 (2025): December 2025
Publisher : Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18267107

Leato Utara Sub-district, Gorontalo City, is an area with a high level of landslide hazard due to its hilly topography, steep slopes, and relatively high rainfall intensity. The main problem faced by the community is the low level of knowledge and preparedness in dealing with potential landslide disasters. This Community Service Program (CSP) aims to enhance community knowledge, awareness, and capacity in landslide disaster mitigation through education and assistance activities. The implementation methods include disaster mitigation counseling, participatory discussions, preparedness simulations, and mentoring in the formulation of simple mitigation measures based on local conditions. The target beneficiaries are residents living in landslide-prone areas of Leato Utara Sub-district. The results indicate an improvement in community understanding of the causes, early warning signs, and mitigation measures for landslides, as well as increased community preparedness in responding to potential disasters. In addition, the establishment of a shared understanding regarding preventive actions and emergency response serves as an indicator of the program’s success. This community service activity is expected to contribute to the development of a more resilient and disaster-prepared community in Leato Utara Sub-district, Gorontalo City.

Edukasi dan Pendampingan Mitigasi Bencana Tanah Longsor bagi Masyarakat Kelurahan Leato Utara, Kota Gorontalo Anton Kaharu; Faiza A. Dali; Satar Saman; Kasmat Saleh Nur; Berni Idji; Mohamad Faisal Dunggio
Nanggroe: Jurnal Pengabdian Cendikia Vol 4, No 9 (2025): December 2025
Publisher : Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18267107

Leato Utara Sub-district, Gorontalo City, is an area with a high level of landslide hazard due to its hilly topography, steep slopes, and relatively high rainfall intensity. The main problem faced by the community is the low level of knowledge and preparedness in dealing with potential landslide disasters. This Community Service Program (CSP) aims to enhance community knowledge, awareness, and capacity in landslide disaster mitigation through education and assistance activities. The implementation methods include disaster mitigation counseling, participatory discussions, preparedness simulations, and mentoring in the formulation of simple mitigation measures based on local conditions. The target beneficiaries are residents living in landslide-prone areas of Leato Utara Sub-district. The results indicate an improvement in community understanding of the causes, early warning signs, and mitigation measures for landslides, as well as increased community preparedness in responding to potential disasters. In addition, the establishment of a shared understanding regarding preventive actions and emergency response serves as an indicator of the program’s success. This community service activity is expected to contribute to the development of a more resilient and disaster-prepared community in Leato Utara Sub-district, Gorontalo City.

PENGUATAN KAPASITAS MASYARAKAT DALAM PEKERJAAN PONDASI MASJID RAUDHATUL JANNAH DI KELURAHAN BOLIHUANGGA Anton Kaharu; Faiza A. Dali; Kasmat Saleh Nur; Berni Idji; Mohamad Faisal Dunggio
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 7 No. 3 (2026): Vol. 7 No. 3 (2026)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v7i3.59801

Pekerjaan pondasi Masjid Raudhatul Jannah di Kelurahan Bolihuangga dilaksanakan secara swadaya oleh masyarakat, namun membutuhkan pendampingan teknis untuk memastikan mutu konstruksi sesuai standar teknik sipil. Kegiatan PKM ini dilakukan melalui edukasi teknis, penyusunan desain pondasi telapak, dan supervisi pekerjaan. Data biaya konstruksi menunjukkan nilai pekerjaan pondasi sebesar Rp 188.798.282,87, terdiri dari pekerjaan lantai kerja, pedestal, pondasi telapak, pondasi jalur, galian, urug kembali, pondasi batu kosong, pasangan batu, pasir urug, dan timbunan pilihan. Pendampingan ini meningkatkan pengetahuan masyarakat dalam pengadukan beton, perakitan tulangan BjTS 420B, pemasangan bekisting, serta pelaksanaan pengecoran dan curing beton. Kegiatan ini terbukti meningkatkan kualitas pekerjaan pondasi dan memastikan pembangunan masjid berlangsung sesuai standar teknis.

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