ANALISIS KAJIAN STRUKTUR DESAIN TERHADAP MUTU EXISTING PADA PENAMPANG NON PRISMATIC GABLE FRAME PT UNIMOTOR TECHNOLOGY INDONESIA

Authors

  • Teguh Mulyo Wicaksono Civil Eng Politeknik Negeri Semarang http://orcid.org/0009-0001-4878-7020
  • Moh. Abduh Universitas Muhammadiyah Malang
  • Dwi Respono Adhi PT. Adhi Konsultan Utama
  • Ridho Wicaksono SMK Negeri 7 Semarang
  • Puspa Anandhita Fristio Politeknik Negeri Semarang
  • Vera Mahardika Politeknik Negeri Semarang
  • Rajna Maulia Dwi Rahma Politeknik Negeri Semarang

DOI:

https://doi.org/10.32497/wahanats.v31i1.7529

Abstract

The use of non-prismatic gable frame steel structures is common in industrial buildings due to their structural efficiency. However, their performance depends significantly on the quality of the steel material. This study evaluates the mechanical properties of Chinese structural steel grade Q355B (GB/T 1591-2018) and assesses its structural performance in a non-prismatic gable frame system at PT Unimotor Technology Indonesia. A quantitative approach was employed through laboratory testing using the Brinell and Rebound methods to determine steel hardness and ultimate tensile strength (Fu). The test results showed a minimum Fu value of 495 MPa. Nevertheless, conservative design properties specified for Q355B steel (Fy = 355 MPa and Fu = 470 MPa) were adopted in the structural analysis. A three-dimensional model was developed using CSI ETABS V.21.0 to represent the non-prismatic gable frame geometry. Structural analysis was conducted in accordance with SNI 1727:2020, SNI 1726:2019, and LRFD load combinations, considering dead, live, wind, and seismic loads. The results indicate that all structural members satisfy the required strength criteria. The maximum flexural–shear interaction ratio was 0.601, while the flexural–compression interaction ratio was 0.57, both below the allowable limit of 1.0. The structure also met the requirements for lateral-torsional buckling resistance. Based on the analysis, the non-prismatic gable frame system using Q355B steel is structurally safe and complies with the requirements of SNI 1729:2020.

Downloads

Published

2026-06-22

Issue

Vol. 31 No. 1 (2026): Wahana Teknik Sipil

Section

Articles

License

Copyright (c) 2026 Teguh Mulyo Wicaksono, Moh. Abduh, Dwi Respono Adhi, Ridho Wicaksono, Puspa Anandhita Fristio, Vera Mahardika, Rajna Maulia Dwi Rahma

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Authors who publish with this journal agree to the following terms:

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).