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Muhammad Riswandy
Universitas Samudra
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary

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Pengaruh Pemadatan dan Substitusi Bubur Kertas terhadap Kuat Tekan Batako Ringan Struktural Dinding Muhammad Riswandy; Alfisyahrin Alfisyahrin; Mhd. Arief Diana; Michel Kasaf; Ari Juanda
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 3 (2026): Juni 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i3.8564

Abstract

This study analyzes the impact of compaction levels and paper pulp ratios on the compressive strength of papercrete blocks. The objective is to develop a lightweight building material that meets structural strength standards based on SNI 03-0348-1989. The base formulation combines cement and sand in a 1:3 ratio, with the sand volume substituted by paper at variations of 80%, 90%, and 100%. Density engineering was conducted by compressing the initial mixture volumes of 120%, 130%, 140%, and 150% into a standard size of 5 cm x 10 cm x 20 cm. Mechanical performance testing involved single blocks, paired blocks bonded with a 1 cm mortar joint, and conventional red bricks as a control comparison. Experimental results demonstrate that most papercrete variants qualify as structural materials within classes II, III, and IV. Only the 120PB100 sample failed to meet the standard classification. Interestingly, the standard red brick did not qualify for any strength class under the SNI framework. The highest mechanical performance was achieved by the 140PB80 variant, yielding a single-block compressive strength of 70.139 kg/cm². However, when evaluated in a paired formation, the strength of this 140PB80 sample reduced by 29.87% to 49.190 kg/cm².
Analisis Desain Gedung Imigrasi Kelas I Banda Aceh dari Struktur Baja ke Struktur Beton Bertulang Alfisyahrin Alfisyahrin; Muhammad Riswandy; Michel Kasaf; Tjut Rizqi Maysyarah Hadi; Mhd. Arief Diana
INSOLOGI: Jurnal Sains dan Teknologi Vol. 4 No. 4 (2025): Agustus 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v4i3.5370

Abstract

This study provides an understanding of the advantages of reinforced concrete in the construction of multi-story buildings in Banda Aceh. The objective of this research is to improve the efficiency of constructing the Class I Immigration Office Building in Banda Aceh by replacing the main structural system from steel to reinforced concrete. This change was carried out in accordance with the SNI 2847:2019 standard, utilizing the ETABS application for the design and analysis process.The results show that the total building weight in the existing condition (steel structure) is 1,594,043.95 kg, while using reinforced concrete increases the weight to 2,631,222.38 kg. At portal 5-5, the differences in bending moment and shear force between the steel and reinforced concrete structures are significant, with values of -2.9559 kNm and -80.0447 kNm for bending moment, and 3.5657 kN and 29.1996 kN for shear force, respectively. Additionally, the maximum lateral displacement in both X and Y directions is lower in the reinforced concrete structure compared to the steel structure. The axial force at portal 5-5 also shows an increase from -492.0887 kN (steel structure) to -949.2849 kN (reinforced concrete structure). These findings indicate that the use of reinforced concrete provides better stability, capacity, and overall structural performance compared to the steel structure
Analisis Ketidakberaturan Struktur Horizontal dan Vertikal Tower Mesjid Rahmah Kota Langsa Menggunakan SNI 1726:2019 Muhammad Riswandy; Haikal Fajri; Muhammad Zacky Ardhyan; Awalu Rahman
INSOLOGI: Jurnal Sains dan Teknologi Vol. 4 No. 3 (2025): Juni 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v4i3.5417

Abstract

This study aims to analyze the response of a high-rise building to horizontal and vertical structural irregularities in a multi-story structure. The subject of the study is the Rahmah Mosque Tower, located at Jl. Lilawangsa, Gampong Paya Bujuk Tunong, Langsa Baro District, Langsa City, Aceh. This tower exhibits both horizontal and vertical irregularities, which can influence its behavior under applied lateral and vertical loadsThe structural behavior is evaluated by examining the building’s response to horizontal and vertical irregularities effect induced by seismic loading. The method for seismic loads are analyzed using dynamic response spectrum analysis in accordance with SNI 1726:2019, implemented in ETABS v18.1.1. Results indicate that failure in the Rahmah Mosque Tower is governed by beam collapse due to insufficient flexural capacity under seismic forces, whereas the columns are adequate to resist earthquake loads. Horizontally, the tower exhibits Type 1b and Type 1a irregularities, as well as Horizontal-Torsional Irregularity. Type 1a. Vertically, it displays Mass (weight) Irregularity and Vertical Geometric Irregularity. These irregularities could significantly affect a building's safety, stability, and structural efficiency. Designs that fail to calculate these irregularities may pose serious risks of damage, both under static and dynamic conditions.
Co-Authors Alfisyahrin Alfisyahrin Ari Juanda Awalu Rahman Haikal Fajri Mhd. Arief Diana Michel Kasaf Muhammad Zacky Ardhyan Tjut Rizqi Maysyarah Hadi