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Perencanaan Gedung Dengan Konsep Rumah Betang Untuk Kantor Kecamatan Kahayan Tengah Listiyani Desy Ratnasari; Mei Sandi Krisetia Putra; Lince Simanjuntak; Bela Tasya Siahaan; Christian Gabriel Kajoha; Octavia Gebrilia Marpaung; Ingka Malvin Septiawan; Devi Gaby Febriyanti Simanjuntak
Diteksi : Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 2 (2025): Diteksi, Vol. 3, No. 2, November 2025
Publisher : Fakultas Teknik Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/diteksi.v3i2.24517

Abstract

The Building and Impact Technique (TMB) is one of the community service activities carried out by lecturers and students of the Faculty of Engineering, University of Palangka Raya. This activity was conducted in Kahayan Tengah Subdistrict, Pulang Pisau Regency, Central Kalimantan. The work program proposed by the subdistrict to TMB participants is the planning of a Detailed Engineering Design (DED) and Budget Plan (RAB) for a new office building with a Betang House architectural concept. This construction is planned because the old building has reached the end of its service life, its capacity is inadequate, its layout is inefficient, and it does not reflect local cultural values. The purpose of the activity is to design a new building that is functional, efficient, and has adequate capacity to replace the old building. In addition, this activity aims to develop an optimal layout for public services and apply the Rumah Betang philosophy. The approach used is applied engineering with participatory design and construction methods, involving traditional leaders and subdistrict staff in decision-making. The implementation stages include program work surveys and discussions, working drawing design using AutoCAD, 3D visualization with SketchUp, structural analysis using SAP2000, and RAB calculations. The results of the activity are complete DED drawings, including site plans, floor plans, elevations, sections, and detailing, as well as RAB calculations covering preparatory work, excavation and earthworks, substructures and superstructures, and other work with an estimated cost of IDR 6,707,785,000.00. The benefit of this activity is to provide an overview of the DED and cost estimates for the construction of a new office building that supports optimal public services and preserves local wisdom.
Analisis Ekuivalensi Penampang Kolom Beton Bertulang Menjadi Concrete Filled Steel Tube (CFST) Terhadap Perpindahan Lateral dan Story Drift Lince Simanjuntak; Okta Meilawaty; Maryanto Maryanto
Jurnal Basement : Jurnal Teknik Sipil Vol. 4 No. 2 (2026): Jurnal Basement : Jurnal Teknik Sipil
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/basement.v4i2.26426

Abstract

The growth of high-rise buildings increases the demand for structural systems with high strength and stiffness. Concrete-Filled Steel Tube (CFST) columns, consisting of steel tubes filled with concrete, are a promising alternative. This study analyzes the equivalence of the reinforcement area in reinforced concrete columns to CFST wall thickness, evaluates the B/t ratio based on SNI 1729:2020, determines the required compact wall thickness, and compares structural responses in terms of lateral displacement and inter-story drift. A quantitative descriptive comparative method was applied using ETABS to model the Integrated Lecture Building of the University of Palangka Raya. Three models were analyzed: the existing reinforced concrete column (Model 1), the reinforcement-equivalent CFST (Model 2), and the SNI 1729:2020-based CFST (Model 3). Model 2 produced wall thicknesses of 1.874–3.532 mm with B/t ratios exceeding the λmax limit, indicating slender sections. Model 3 required wall thicknesses of 13, 9, and 6 mm to satisfy compact criteria. CFST columns reduced lateral displacement by 7.34–22.70% and inter-story drift by 6.63–23.07%.