VIDEO PRESENTASI ONLINE || Kelompok 28, mengenai : Perbedaan SNI 1726-2012 & 1726-2019

Summary

This video presentation, created by students from Universitas Muhammadiyah Mataram, explores the differences between Indonesia's SNI 1726:2012 and SNI 1726:2019 standards for seismic design. Key changes include updated load combinations, modifications to spectral response analysis, and the requirement for a higher number of vibration modes in structural analysis. The new 2019 standard emphasizes more rigorous safety measures, including a full 100% participation of structural mass in dynamic analysis. The students discuss how these revisions impact earthquake-resistant building design and their application to both building and non-building structures. Overall, the video provides a detailed comparison of the two standards and their significance for construction projects in Indonesia.

Takeaways

• 😀 The video presents a comparison of SNI 1726:2012 and SNI 1726:2019, focusing on differences related to load combinations, response spectrum, and structural analysis methods.
• 😀 One of the key differences between the 2012 and 2019 versions is the reorganization of load combinations for ultimate methods, with minor changes in the presentation of points in the 2019 version.
• 😀 SNI 1726:2012 divides the response spectrum into three sections, whereas SNI 1726:2019 expands this to four sections, introducing a new equation for long-period structures.
• 😀 The 2019 version adds a response spectrum equation specifically for locations with longer seismic periods, whereas the 2012 version only used three standard equations.
• 😀 The modal analysis requirement for mass participation in horizontal directions increased from 90% in the 2012 version to 100% in the 2019 version to ensure more accurate structural dynamic analysis.
• 😀 In SNI 1726:2012, shear forces were allowed to be reduced using dynamic factors, but the 2019 version further refines this by adjusting the calculation of lateral forces for structures with specific period characteristics.
• 😀 The 2019 version of SNI 1726 includes a more detailed method for determining the response spectrum, offering more accuracy for structures with periods longer than certain thresholds.
• 😀 The update in modal analysis (SNI 1726:2019) mandates the inclusion of enough modes to fully account for the structure's mass, ensuring that 100% of the mass is considered in the analysis.
• 😀 SNI 1726:2019 improves the design process by better addressing seismic hazards for both short and long-period structures, ensuring safety through enhanced response spectrum equations.
• 😀 In summary, while SNI 1726:2012 was a solid foundation, the 2019 version brings a more comprehensive and accurate approach to seismic design, especially for structures located in areas with different seismic characteristics.

Q & A

What is the focus of the video presentation?

The video presentation focuses on explaining the differences between SNI 1726:2012 and SNI 1726:2019, particularly in terms of seismic design standards, load combinations, response spectra, and vibration analysis for structural safety in Indonesia.

What are the main differences in load combination methods between SNI 1726:2012 and SNI 1726:2019?

In SNI 1726:2012, the load combination method for the ultimate limit state is provided with specific points, whereas SNI 1726:2019 revises these points with a new arrangement, ensuring clearer guidelines for load combinations in seismic design.

How does the response spectrum analysis differ between SNI 1726:2012 and SNI 1726:2019?

In SNI 1726:2012, the response spectrum is divided into three parts. In contrast, SNI 1726:2019 divides it into four parts, introducing additional equations for specific locations in Indonesia, and considering different structural periods for design.

What changes were made regarding the response spectrum for locations with long periods in SNI 1726:2019?

For structures in locations with a long period (e.g., 16 seconds), SNI 1726:2019 introduces new equations for response spectra, while SNI 1726:2012 only used three parts of the spectrum, which didn't account for these new structural considerations.

How does the vibration analysis approach differ in SNI 1726:2012 and SNI 1726:2019?

SNI 1726:2012 requires that the natural vibration modes for structural analysis must capture at least 90% of the total mass participation in both horizontal directions. SNI 1726:2019 increases this requirement to 100% participation.

What is the significance of the change from 90% to 100% mass participation in SNI 1726:2019?

The shift from 90% to 100% mass participation in SNI 1726:2019 ensures a more accurate representation of the structure’s response to seismic forces, improving the safety and reliability of the seismic analysis.

What impact did SNI 1726:2019 have on the allowable base shear values for foundation design?

SNI 1726:2019 changed the allowable base shear values for foundation design. For example, the static equivalent base shear must be multiplied by a factor of 0.5 for specific cases, which was not required in the previous version of the standard.

How does SNI 1726:2019 address the use of static equivalent methods in seismic analysis?

SNI 1726:2019 introduces a more comprehensive guideline for static equivalent methods, particularly for base shear calculations, emphasizing that the response spectra for structures must be adapted based on the structure's period and seismic location.

What changes were made regarding foundation design in the latest SNI 1726:2019 compared to 2012?

SNI 1726:2019 introduces more rigorous calculations for base shear and adjusts the procedures for foundation design, particularly for structures with varying periods, to ensure higher accuracy in earthquake-resistant designs.

What is the overall conclusion about the differences between SNI 1726:2012 and SNI 1726:2019?

The main conclusion is that SNI 1726:2019 introduces more detailed and stricter requirements compared to SNI 1726:2012, including changes in load combinations, response spectrum analysis, vibration analysis, and base shear calculations, ensuring improved structural safety and resilience to seismic events.