Modified Superstructure Design of the Religious Court Office Building in Penajam Paser Utara Regency, East Kalimantan Province

Authors

  • Hanif Muhaimin Universitas Merdeka Madiun, Indonesia
  • Seno Aji Universitas Merdeka Madiun, Indonesia
  • M Arif Bakhtiar E Universitas Merdeka Madiun, Indonesia

DOI:

https://doi.org/10.57235/motekar.v4i2.9284

Keywords:

Vertical Extension; Low Seismicity; Special Moment Frame; Reinforced Concrete Design; SNI 1726:2019

Abstract

Vertical extension is increasingly adopted to meet the growing space demand of public buildings, but it increases gravity and seismic demands and requires structural redesign in accordance with current standards. This study redesigns the superstructure of the Religious Court Office Building of Penajam, located in the development area of Indonesia's new capital city (IKN), from two to three storeys. The design follows SNI 1726:2019, SNI 2847:2019, SNI 1727:2020, and SNI 1729:2020. The structure was modelled as a three-dimensional reinforced concrete special moment frame in SAP2000 v24 and analysed using the equivalent lateral force procedure. The results show that the building is classified as Seismic Design Category B, with a design base shear of 431.3 kN, or 1.6% of the effective seismic weight. The 120 mm slabs require Ø10-100 reinforcement at supports and Ø10-200 at midspan. The main beam (350×700 mm) requires 7D19 at the supports, and the main column (500×500 mm) requires 12D22, with a maximum flexural demand-to-capacity ratio of 0.98. Most members are governed by minimum reinforcement and detailing provisions rather than by seismic strength demand, as indicated by the governing role of maximum stirrup spacing and minimum torsional reinforcement in all beams. These findings indicate that in low-seismicity regions such as IKN, the choice of seismic force-resisting system affects detailing and constructability more than member dimensions.

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Published

2026-10-27

How to Cite

Muhaimin, H., Seno Aji, & M Arif Bakhtiar E. (2026). Modified Superstructure Design of the Religious Court Office Building in Penajam Paser Utara Regency, East Kalimantan Province. Jurnal Multidisiplin Teknologi Dan Arsitektur, 4(2), 467–479. https://doi.org/10.57235/motekar.v4i2.9284

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Vol. 4 No. 2 (2026): November 2026

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