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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur JPTK: Jurnal Pendidikan Teknologi dan Kejuruan Semesta Teknika U Karst JMTS: Jurnal Mitra Teknik Sipil
Faqih Ma’arif
Universitas Negeri Yogyakarta
Civil Engineering, Building, Construction & Architecture Engineering Other

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ANALISIS PENURUNAN KUALITAS MUTU KAYU PADA BANGUNAN CAGAR BUDAYA DENGAN METODE NON DESTRUCTIVE TEST (Studi Kasus Bangunan Cagar Budaya Masjid Gedhe Mataram Daerah Istimewa Yogyakarta) Darmono Darmono; Maris Setyo Nugroho; Slamet Widodo; Faqih Ma’arif
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 16, No 2 (2020): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v16i2.36905

Abstract

ABSTRAKPenelitian bertujuan untuk mengetahui mechanical properties material kayu Bangunan Cagar Budaya dengan non-destructive test. Penelitian ini menggunakan metode pengujian lansung dilapang menggunakan Ultrasonic Pulse Velocity (UPV). Terdapat dua variable yang digunakan yaitu kolom cacat dan kolom utuh untuk mengetahui perbedaan nilai cepat rambat gelombang. Jumlah sampel yang digunakan sebanyak enam buah dengan pengambilan data masing-masing sampel sebanyak lima kali. Hasil pengujian menunjukkan bahwa nilai kadar air dan berat jenis kayu sebesar 15,03% dan 0,62. Sedangkan hasil pengujian UPV pada kolom cacat dan utuh diperoleh cepat rambat gelombang sebesar 0,71 km/s dan 1,21 km/s. Berdasarkan hasil analisis menunjukkan bahwa nilai MOEd pada kolom utuh sebesar 9.374,37 MPa, sedangkan MOEd pada kolom cacat sebesar 3.240,62 MPa. Kata kunci: mechanical properties kayu, bangunan cagar budaya, ultrasonic pulse velocity ABSTRACTThis study aims to determine the mechanical properties of the wood material for the Cultural Heritage Building with a non-destructive test. This study used a direct field testing method using Ultrasonic Pulse Velocity (UPV). There are two variables used, namely the defective column and the solid column to determine the difference in the value of the fast propagation of the waves. The number of samples used was six with data collection for each sample five times. The test results showed that the moisture content and density of wood were 15.03% and 0.62. While the UPV test results on defective and solid columns obtained wave propagation velocity of 0.71 km / s and 1.21 km / s. Based on the analysis result, it shows that the MOEd value in the whole column is 9,374.37 MPa, while the MOEd in the defective column is 3,240.62 MPa. Keywords: mechanical properties of wood, cultural heritage buildings, ultrasonic pulse velocity
Perencanaan Struktur Beton Bertulang Tahan Gempa Berlantai 4 (Studi Kasus Gedung Baru Kampus I Universitas Teknologi Yogyakarta) Algazt Arsyad Masagala; Faqih Ma'arif
Semesta Teknika Vol 19, No 1 (2016): MEI 2016
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/st.v19i1.1829

Abstract

The new building in campus one of Universitas Teknologi Yogyakarta which consists of four floors is analyzed by using Intermediate Moment Resisting Frame (IMRF) to be able to withstand gravity and seismic load. The planning of reinforced concrete structure in this building is aimed to 1) to calculate the gravity and seismic plan load that works for the new building in campus one of Universitas Teknologi Yogyakarta, 2) to find the dimension of beam and column that able to withstand the working seismic plan load, 3) to determine the formation of beam and column reinforcement from the analysis result by using Intermediate Moment Resisting Frame (IMRF). The building structure analysis is conducted using SAP 2000 V.11 program. The planning of reinforced concrete structure is assumed as Intermediate Moment Resisting Frame/Structure (IMRF). The planning of beam and column is conducted by using the dimension in the field. The reinforced planning is conducted base on the Assessment Regulation of Reinforced Concrete Structure for Infrastructure with SNI 03-2847-2002. The assessment of static equivalent seismic load is referred to Standards of Earthquake Resistance Planning for Buildings with SNI-03-1727-2002. Based on the analysis by using Intermediate Moment Resisting Frame (IMRF), the planning of reinforced concrete structure including dimension and reinforced formation of beam and column has fulfilled the requirements and save based on field assessment.   
The Ultrasonic Pulse Velocity and Lagrangian Approaches to Predict the Effective Thickness and Homogeneity of the Sandwich Panel Faqih Ma'arif; Slamet Widodo; Maris Setyo Nugroho; Mohamad Tafrikan; Zhengguo Gao
U Karst Vol 6, No 2 (2022): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v6i2.3545

Abstract

Non-destructive testing can be applied to various things, including sandwich panels. Sandwich panels made of EPS are greatly affected by the mixing process. Bad mixing can affect the level of homogeneity and reduce quality. In addition, the improper thickness of layers and cores can result in wall damage. For this reason, carrying out a non-destructive test on the sandwich panel is necessary. This study aims to determine the homogeneity of the material and predict the dimensions of the EPS core and layer. Experimental testing was conducted using Ultrasonic Pulse Velocity (direct method) with 90 points. The test object consisted of six sandwich panel walls with three variants, each with dimensions and layer thickness of 15 mm, 20 mm, and 25 mm, respectively, while the core layer size was 70 mm, 80 mm, and 90 mm, respectively. The test results were analyzed on travel time and wave velocity using a statistical analysis approach including covariance, Kolmogorov-Smirnov, ANOVA, t-test, and Lagrangian. The analysis results show that the mixture's homogeneity can be determined based on the ultrasonic pulse velocity. The proposed Lagrange analysis can reveal the behavior of the propagation speed. Based on the results of the Lagrange approach, the highest speed is obtained at a thickness of 80 with a maximum speed of 2.395 km/s. The results of this study contribute to the non-destructive test procedure, especially in determining homogeneity and the dimensions of the effective thickness of the structural walls (cores and layers) that have been installed in the field quickly, cheaply, accurately, and briefly.
OPTIMASI LETAK SHEAR WALL PADA STRUKTUR GEDUNG Samsul A Rahman Sidik Hasibuan; Faqih Ma’arif
JMTS: Jurnal Mitra Teknik Sipil Volume 5, Nomor 4, November 2022
Publisher : Prodi Sarjana Teknik Sipil, FT, Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmts.v5i4.18143

Abstract

Shear walls are structural walls designated as part of an earthquake force-resisting system, which also serves to increase the stiffness of the structure and absorb large shear forces as the height of the structure increases. When shear walls are placed in the right and strategic position, shear walls can be used economically to provide horizontal load resistance. In this paper, the 7-storey symmetrical building structure is modelled and analyzed using ETABS v.9.7.4 software. Analysis was carried out on four structural models with variations in the proposed shear wall locations. The model without shear walls was used as a controller for the normal model. This paper aims to optimize the location of the shear wall in a 7-storey symmetrical building structure. Furthermore, the results of the analysis of the structure of the building without shear walls and variations in the location of the shear walls were obtained using the ETABS v.9.7.4 software. The analysis results show that model 3 is a better location for shear walls to be applied to the review structure.   Abstrak Shear wall merupakan dinding struktur yang ditetapkan sebagai bagian dari sistem penahan gaya gempa, juga berfungsi menambah kekakuan struktur dan menyerap gaya geser yang besar seiring dengan semakin tingginya struktur. Ketika shear wall diletakan pada posisi yang cocok dan strategis, shear wall dapat digunakan secara ekonomis untuk menyediakan tahanan beban horisontal yang diperlukan. Dalam tulisan ini struktur gedung simetris 7 tingkat dimodelkan dan dianalisis menggunakan software ETABS v.9.7.4. Analisis dilakukan pada 4 model struktur dengan variasi letak shear wall yang diusulkan. Untuk model normal yaitu model tanpa shear wall digunakan sebagai pengontrol. Tulisan ini bertujuan untuk mengoptimalkan letak shear wall pada struktur gedung simetris 7 tingkat. Selanjutnya, hasil analisis struktur gedung tanpa shear wall dan dengan variasi letak shear wall menggunakan software ETABS v.9.7.4 telah diperoleh. Hasil analisis menunjukan bahwa model 3 merupakan letak shear wall yang lebih baik untuk diterapkan pada struktur tinjauan.
Analysis and diagnosis for 12 job level of training junior civil engineers in operations and structural engineer tasks Faqih Ma'arif; Ahmed Wasiu Akande
Jurnal Pendidikan Teknologi dan Kejuruan Vol 29, No 1 (2023): (May)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jptk.v29i1.60668

Abstract

This study aims to determine the competencies of twelve job levels in housing construction work, as well as effective strategies to improve employee skills in each field. The method used is qualitative by conducting interviews in each competency field (infrastructure, structure, landscape, mechanical, and electrical). Closed questionnaires were carried out specifically for structural engineering work, which has a greater percentage of work than other fields. Education and training, as well as demonstrations through various learning media (modules, virtual reality, and tutorials), are carried out in parallel classes through an integrated schedule that the company has prepared. The results showed that in order to obtain a minimum standard of competence in all fields, 448 study hours were required with the details of the general manager, project manager, assistant manager, and supervisor, respectively, 38 JP, 120 JP, 160 JP, and 130 JP, which were divided into 45 subject areas. Analysis of the level of knowledge and skills reports that junior structure engineers need construction work assistance and standard knowledge about building construction compared to senior engineers who have exceeded the minimum passing criteria with an average achievement of 4.23 (84%) of the total material studied
Co-Authors Ahmed Wasiu Akande Algazt Aryad Masagala Darmono Maris Setyo Nugroho Mohamad Tafrikan Samsul A Rahman Sidik Hasibuan Slamet Widodo Zhengguo Gao