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Modifikasi Perencanaan Struktur Gedung Kantor DPW Nasdem Menggunakan Struktur Baja Dengan Sistem Rangka Pemikul Momen Khusus: Structure Design Modification of DPW Nasdem Office Building using Steel Special Moment Resisting Frame Anjani, Putri Aru; Bakri, Radinal; Tethool, Yoga C. V.
JISTECH: Journal of Information Science and Technology Vol 12 No 1 (2023): Vol. 12 No. 1 (2023): April 2023
Publisher : Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jistech.v12i1.206

Abstract

Manokwari is a District located at the junction of three main plates forming the earth's crust, namely the pacific plate. This makes Manokwari Regency prone to earthquakes. Therefore, building planning must be designed with the concept of earthquake-resistant buildings. Steel material is one type of material that is often used for planning earthquake-resistant building structures because it has high strength and lightweight properties that it is good for earthquake-resistant buildings. One of the methods often used in the planning of earthquake-resistant steel structures is the special moment resisting frame system (SMRF). This structural system is used because it has full ductility that it can survive in areas with a high earthquake risk. This planning modification was carried out at the DPW NasDem Office building by changing the main structure in the form of reinforced concrete using a steel structure with a special moment resisting frame system (SMRF). Based on the calculation and analysis, the results were obtained, namely: the dimensions of the secondary beam are IWF 300x150x6.5x9, the main beam 1 IWF 350x250x9x14, the main beam 2 IWF 300x200x9x14, the column dimensions KC 450x200x9x14 (floors 1-3), KC 400x200x8x13 (floors 4-5), and KC 350x175x7x11 (elevator columns). Floor slabs are 12 cm thick and 10 cm thick for roofing plates. The SRMF joint design uses a high-quality bolt (A325) with the quality of the BJ41 joint plate and the planning results meet the requirements.
Pemanfaatan Limbah Kaca Sebagai Bahan Filler Untuk Pembuatan Bata Beton: Utilization of Waste Glass as Filler Material for Concrete Bricks Saputri, Riska Iga; Tethool, Yoga C. V.; Pramanagara, Rio O.
JISTECH: Journal of Information Science and Technology Vol 12 No 1 (2023): Vol. 12 No. 1 (2023): April 2023
Publisher : Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jistech.v12i1.207

Abstract

Concrete brick is a type of building element in the form of blocks made from the main ingredients of portland cement, water and aggregate used for wall (SNI 03-0349-1989). The concrete brick tested using glass powder added material is expected to produce high compressive strength and low water absorption. The method used is an experimental method by direct research at the Mining Laboratory of the University of Papua and processing the results of compressive strength and water absorption test data.The results of the compressive strength test for concrete bricks with the addition of glass powder with a large compressive strength value, namely in a 10% mixture of 36.256 kg/cm2, when viewed from the quality level based on SNI 03-0349-1989, concrete bricks with the addition of 10% glass powder are included in class IV category.The results of the calculation of water absorption obtained an average value of 0% glass powder, equal to 2.17%, 5% glass powder amounted to 5.08%, and 10% glass powder amounted to 4.92%, when viewed in a quality level based on SNI 03-0349-1989, concrete bricks with the addition of glass powder 0%, 5% and 10% fall into the class I category, namely 25%.The calculation results show that the cost of raw materials for concrete bricks with a mixture of 0% is Rp. 1,130,440, Concrete brick with a 5% mixture of Rp. 1,126,840, Concrete brick with a 10% mixture of Rp. 1,126,240. The results of the calculation of raw material costs show that using glass filler as a substitute for sand in the manufacture of concrete bricks is cheaper than normal concrete bricks.