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Kuat Tekan Vertikal Dinding Panel Beton Expanded Polystyrene dengan Perkuatan Papan Kalsium Silikat dan Penyambung Geser Baut Bella Lutfiani Al Zakina; Ashar Saputra; Ali Awaludin
Semesta Teknika Vol 22, No 2 (2019): NOVEMBER 2019
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/st.222248

Abstract

Perlunya percepatan penyediaan rumah tinggal mengharuskan pemerintah mencoba sistem konstruksi inovatif menggunakan sistem beton sandwich polystyrene yang digunakan sebagai konstruksi dinding. Konstruksi ini memiliki kelebihan seperti memiliki bobot yang relatif lebih ringan, harga yang relatif lebih ekonomis, dan kemudahan serta kecepatan konstruksi. Konstruksi ini diharapkan dapat mengurangi risiko kerusakan akibat gempa bumi karena memiliki bobot yang relatif ringan yang merupakan salah satu syarat untuk rumah tahan gempa. Untuk meningkatkan daya dukung dinding panel beton polystyrene agar menjadi dinding struktural, alternatifnya adalah menggunakan bahan pelapis perkuatan. Dalam penelitian ini menggunakan spesimen pracetak yang diperoleh dari pracetak pabriksi dengan panjang 1800 mm, lebar 610 mm, dan tebal 75 mm. Penguatan menggunakan papan Kalsium Silikat. Jenis kalsium silikat yang digunakan adalah papan Kalsi. Benda uji disabung menggunakan lem sika dan kemudian dilubangi, jika telah dilakukan pasang bautsebagai konektor geser. Variasi dalam penelitian ini adalah panel beton polystyrene polos, panel beton polystyrene yang diperkuat dengan kalsi, dan panel beton polystyrene yang diperkuat dengan kalsi dan konektor geser baut. Pengujian berdasarkan SNI 03-3122- 1992 (Panel Beton Ringan Berserat). Hasil penelitian menunjukkan bahwa nilai rata-rata berat panel adalah 612,57 kg / m3, modulus elastisitas 942,37 MPa, kekuatan tekan 2,52 MPa dan kapasitas penyerapan air 12,11%. Kekuatan tekan tertinggi diperoleh oleh panel dengan perkuatan kalsiboard sebesar 1,18 MPa. Ini menunjukkan penambahan lapisan perkuatan akan mempengaruhi peningkatan kekuatan. The need to acceleration the provision of residential homes requires the government tried innovative construction system using concrete sandwiches expanded polystyrene used as wall construction. This construction has advantages such as having a relatively lighter weight, relatively more economical prices, and the ease and speed of construction. This construction is expected to reduce the risk of damage due to earthquakes because it has a relatively light weight which is one of the requirements for earthquake resistant houses. To increase the bearing capacity of expanded polystyrene concrete panel walls to be a structural wall, the alternative is to use reinforced coating material. In this study using precast specimens obtained from the precast manufacturing with a length of 1800 mm, width 610 mm, and thick 75 mm. Strengthening using the Calcium Silicate board. The type of calcium silicate used is the Kalsi board. The test object is glued using sika glue and then drilling, if it is has done to install the bolt as a sliding connector. Variations in this study are expanded polystyrene concrete panels without reinforcement, with reinforcement, and with reinforcement and bolt shear connectors. Testing based on SNI 03-3122- 1992 (Fibrous Lightweight Concrete Panel). The results showed that the average value of the panel weight was 612,57 kg/m3, the elastic modulus was 942,37 MPa, compressive strength of 2,52 MPa and water absorption capacity of 12,11%. The highest compressive strength was obtained by the panel with a calibration of 1,18 MPa. This shows the addition of reinforcement layers will affect the increase in strength.
ANALISIS PRIORITAS PENGENDALIAN RISIKO PELAKSANAAN PROGRAM BANTUAN STIMULAN PERUMAHAN SWADAYA (BSPS) DI PROVINSI SUMATERA UTARA Dinnie Ananda Rizky; Suprapto Siswosukarto; Ashar Saputra
JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality Vol 6, No 1 (2022): Vol 6 No. 1 Tahun 2022
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ju.v6i1.725

Abstract

BSPS is a community-based program in the housing sector for improving basic service infrastructure and increasing access to decent, safe and affordable housing and settlements for low-income communities in Indonesia, including the Province of North Sumatera. In 2020, the  amount of housing assistance that Province of North Sumatera received  in improving the quality of houses was 7,077  allocations in 15 districts/cities. For this reason, it is necessary to carry out the further analysis of risk control in program implementation as a benchmark for development in accordance with the government's objectives in reducing uninhabitable houses in Indonesia. This research used descriptive quantitative method. The problem assessment was carried out using the Analytical Hierarchy Process (AHP) method to obtain the priority risk criteria from 18 appropriate sub-criteria. Based on the survey results from 3 expert respondents, it was found that the highest risk control priorities were individual or collective aspirations of 27.02%, community understanding of livable housing (RLH) 12.68%, and competence of the facilitator 8.91%.
Metode Pemantauan Pekerjaan Konstruksi Menggunakan Point Clouds Berbasis Drone dan LiDAR Iphone Sakti Aulia Sulistyo; Akhmad Aminullah; Ashar Saputra
Jurnal Aplikasi Teknik Sipil Vol 21, No 3 (2023)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2579-891X.v21i3.15686

Abstract

Kepentingan industri konstruksi untuk informasi yang tepat waktu dan akurat tentang kemajuan proyek konstruksi semakin meningkat. Informasi yang diperlukan untuk mengukur progres proyek konstruksi tidak dapat dengan mudah dikumpulkan dikarenakan terus berubah. Pada sebagian besar lokasi proyek konstruksi, perolehan data bergantung pada pencatatan informasi secara manual di atas kertas, penggunaan foto dan dokumen yang menyebabkan banyak kendala dalam ruang dan waktu. Penelitian ini mengusulkan pemantauan pekerjaan berbasis BIM menggunakan foto udara Drone dan LiDAR Iphone yang diproses menjadi point clouds. Data point clouds berbasis LiDAR Iphone memenuhi persyaratan General Service Administration (GSA) untuk proyek desain arsitektural dengan kesalahan rata-rata dimensi 0,011 m. Data pengamatan terakhir menunjukkan proyek mengalami keterlambatan sebesar 240,10 m3, data ini memungkinkan manajer proyek untuk menilai kemajuan dan mengelola proyek secara komprehensif. Visualisasi 4 dimensi memudahkan manajer proyek untuk mengambil keputusan dengan cepat berdasar informasi aktual sehingga dapat mengurangi waktu pekerjaan dan pembengkakan biaya.
Effectiveness of Elastomeric Bearings in Reducing Pounding Effects between Reinforced Concrete Buildings under Seismic Condition M. Riski Audri Rahman; Ashar Saputra; Iman Satyarno
Civil Engineering Dimension Vol. 27 No. 1 (2025): MARCH 2025
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.27.1.47-58

Abstract

This study investigates seismic pounding hazards between adjacent reinforced concrete buildings in East Java, particularly those designed under older regulations without pounding considerations. Nonlinear time history analysis was performed on three building models using eleven pairs of earthquake records scaled to SNI 8899:2020, representing Megathrust, Benioff, and Shallow Crustal earthquakes, with only three pairs analyzed in this study. Model 1 allowed free movement, Model 2 included concrete impact links with a 50 mm gap, and Model 3 utilized elastomer bearing links with a 9 mm gap. Results showed that elastomeric bearings reduced pounding forces by 81% to 95%, decreasing link force from 57437 kN to 5745 kN while withstanding axial loads up to 6276 kN, preventing collisions and maintaining structural stability. Additionally, Model 3 exhibited reduced floor accelerations and structural damage compared to Model 2, emphasizing the importance of elastomeric bearings in mitigating seismic pounding risks.