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All Journal Aceh International Journal of Science and Technology Journal of The Civil Engineering Student
Nora Abdullah
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Engineering Transportation

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Natural Frequency Measurement of Modest Dwelling Houses Bambang Setiawan; Nafisah Al-Huda; Alfiansyah Yulianur; Nora Abdullah; Juellyan Juellyan; Athalya Khanza Permana; Jihan Indria Sawitri
Aceh International Journal of Science and Technology Vol 11, No 3 (2022): December 2022
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (753.729 KB) | DOI: 10.13170/aijst.11.3.28765

Abstract

Around 1000 to 4000 units of modest dwelling houses are annually built in Aceh Province. A modest dwelling house is a small type of house with limitations in space planning which is very suitable for small families with middle to lower incomes. This lower middle-class community is a group of people who are very vulnerable and will be very severely affected when a disaster occurs. A modest dwelling house is a one-story building with simple construction and structure in its physical form. On the other hand, Aceh is also one area that is very prone to earthquake disasters from along the subduction zone and Sumatran Fault. Therefore, measuring the frequency of a modest dwelling house is crucial to understanding all house elements' conditions. It is essential to estimate the integrity and safety of the house after an earthquake occurs. The method used in this research is using the field experiment method in the form of measuring the natural response of the building to vibration based on microtremor data. This study uses a seismometer. The data is stored in a data logger. The seismometer is placed on the floor of the house. Data collection is carried out when no major activities are around the house. Measurements were carried out for a minimum of 60 minutes. Computer analysis with specific parameters obtained using Geopsy software. The result of this study indicates that the dominant frequency of modest dwelling houses measured is around 2.99 Hz. The analysis results from the field experiment were validated using pushover analysis of the detailed engineering design data. The modeling results show that in the x-axis direction (parallel to the direction of the building), the frequency obtained is 7.14 Hz. Pushover analysis on the model with the y-axis direction (parallel to the side of the building) obtained a frequency of 7.46 Hz. This validation shows a huge difference between the frequency of field measurement results and computer modeling results. Many factors, including decreasing or degrading the concrete construction quality in the field, can cause this gap.
Kuat Tekan Batu Bata Merah dengan Menggunakan Abu Sekam Padi dan Serbuk Gergaji Sebagai Bahan Campurannya Selvi Jannahtun Alhusna; Yulia Hayati; Nora Abdullah
Journal of The Civil Engineering Student Vol 6, No 4 (2024): Volume 6 Nonor 4 Desember 2024
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/journalces.v6i4.30536

Abstract

Batu bata merah merupakan salah satu bahan dinding yang digunakan untuk memikul beban dan sebagai unsur estetika dalam konstruksi bangunan. Di Indonesia, pembuatan batu bata merah sering menggunakan bahan penyusun yang terdiri dari tanah liat, tanah pasir dan air. Bahan-bahan penyusun batu bata merah akan mempengaruhi sifat bata yang dihasilkan sehingga perlu dilakukan penelitian untuk menghasilkan batu bata merah yang baik. Dengan demikian, maka penelitian dilakukan untuk membuat batu bata merah menggunakan tanah liat sebesar 85% yang dicampurkan abu sekam padi dan serbuk gergaji berturut-turut dengan perbandingan presentase sebesar 15%:0%, 10%:5%, 5%:10%, dan 0%:15%. Pengujian batu bata merah yang akan dilakukan ialah sifat tampak, kuat tekan, dan penyerapan air. Proses pembuatan batu bata merah melewati proses pembakaran. Tujuan penelitian ini untuk mengetahui pengaruh campuran abu sekam padi dan serbuk gergaji dalam pembuatan batu bata merah sebagai penggantian sebagian tanah liat dengan harapan dapat menghasilkan mutu bata merah yang baik. Hasil campuran abu sekam padi dan serbuk gergaji secara pengujian sifat tampak diperoleh keretakan 80%, kesikuan 44%, dan bunyi nyaring 100%. Untuk hasil pengujian daya serap, dihasilkan adanya peningkatan pada campuran dan penurunan pada campuran serbuk gergaji 15%. Sedangkan pada hasil pengujian rata-rata kuat tekan didapatkan nilai kuat tekan paling tinggi sebesar 21,41 kg/cm2 pada campuran 5% abu sekam padi dan 10% serbuk gergaji.
Co-Authors Alfiansyah Yulianur Athalya Khanza Permana Bambang Setiawan Chresky Nofelri Karundeng Jihan Indria Sawitri Juellyan Juellyan Nafisah Al-Huda Selvi Jannahtun Alhusna Syamsidik, Syamsidik Yulia Hayati Yunita Idris