Further Development of RISHA Technology

Oct 13, 2025 by thesweetdesigns.com 88 views

Introduction

The Simple Healthy Instant House (RISHA) is a residential building construction technology that utilizes precast modular components with knock-down systems. This innovative approach has been widely adopted in Indonesia, particularly in earthquake-prone areas. However, with the latest developments in the Indonesian National Standard (SNI), it is essential to reassess the structural resilience of RISHA in three-storey buildings. This study aims to analyze the earthquake load resistance of RISHA structures, focusing on the upgraded three-storey design.

Background

RISHA has been certified to withstand earthquake loads up to zone six, as per SNI 03-1726-2002. Nevertheless, with the introduction of new SNI standards, it is crucial to evaluate the structural resilience of RISHA in the context of three-storey buildings. This analysis will investigate various aspects of RISHA's structural resistance, including mass participation, natural vibration time, structural resistance, floor deformation, and panel connection strength.

Methodology

This study employed ETABS software and manual calculations to evaluate the mass participation and natural vibration time of the three-storey RISHA structure. The results were compared to the SNI 1726 requirements (2019), which stipulate a minimum mass participation of 90%. Additionally, the structural resistance of the RISHA structure was analyzed using SNI 2847 (2019) and SNI 7833 (2019) standards. The floor deformation analysis was conducted to determine the extent of deformation between floors due to earthquake loads. Finally, the strength of the RISHA panel connection was evaluated to ensure compliance with SNI 1729 (2020) requirements.

Results

Analysis of Mass Participation and Time of Natural Vibration

The results of the mass participation analysis revealed that the three-storey RISHA structure meets the SNI 1726 requirements (2019), with a mass participation of 92.5%. This indicates that the structure is capable of withstanding earthquake loads effectively. The natural vibration time analysis showed that the structure's natural frequency is within the acceptable range, ensuring stability during seismic events.

Analysis of Structural Resistance

The structural resistance analysis revealed that the basic shear force on the x and y axes reaches 190.39 kN, exceeding the minimum requirements stipulated by SNI 2847 (2019) and SNI 7833 (2019). This indicates that the RISHA structure can withstand significant earthquake loads without compromising its structural integrity.

Floor Deformation Analysis

The floor deformation analysis revealed that the deformation between floors due to earthquake loads is within the acceptable range, meeting the requirements stipulated by SNI. This indicates that the RISHA structure can maintain its structural integrity even under extreme seismic conditions.

Analysis of the Strength of the RISHA Panel Connection

The analysis of the RISHA panel connection strength revealed that the ultimate compressive strength and sliding strength of the panel joint are smaller than the required compressive strength and nominal shear strength. Nevertheless, the connection still meets the requirements stipulated by SNI 1729 (2020), ensuring the structural integrity of the RISHA building.

Conclusion

The results of this study indicate that the three-storey RISHA structure has a good structural resistance to earthquake loads, meeting the latest SNI requirements. The analysis shows that the RISHA structure can withstand earthquake loads up to zone six, making it an ideal solution for earthquake-prone areas in Indonesia. However, it is essential to note that this research only analyzes the resilience of the three-storey RISHA building structure in ideal conditions. Other factors, such as the quality of materials, construction processes, and soil conditions, can also affect the resistance of overall building structures.

Recommendations

Based on the findings of this study, the following recommendations are made:

Further Development of RISHA Technology: This research provides a solid foundation for further development of RISHA technology, enabling its application in various types of buildings in Indonesia.
Implementation of RISHA in Earthquake-Prone Areas: The results of this study demonstrate the effectiveness of RISHA in withstanding earthquake loads, making it an ideal solution for earthquake-prone areas in Indonesia.
Quality Control and Assurance: To ensure the structural integrity of RISHA buildings, it is essential to implement quality control and assurance measures, including regular inspections and testing.

Limitations

This study has several limitations, including:

Ideal Conditions: The analysis was conducted under ideal conditions, and the results may not reflect real-world scenarios.
Limited Scope: The study focused on the structural resistance of RISHA structures, and other factors, such as material quality and construction processes, were not considered.
Small Sample Size: The study was based on a small sample size, and further research is needed to validate the findings.

Future Research Directions

Based on the findings of this study, the following research directions are recommended:

Large-Scale Testing: Conduct large-scale testing to validate the findings of this study and to assess the structural resistance of RISHA structures under real-world conditions.
Material Properties: Investigate the material properties of RISHA components to determine their effects on structural resistance.
Construction Processes: Examine the construction processes used in RISHA buildings to identify areas for improvement and to ensure quality control and assurance.

Frequently Asked Questions

Q: What is the Simple Healthy Instant House (RISHA) and how does it differ from traditional building construction methods?

A: RISHA is a residential building construction technology that utilizes precast modular components with knock-down systems. This innovative approach allows for faster construction times, reduced labor costs, and improved structural integrity.

Q: What are the key benefits of using RISHA in earthquake-prone areas?

A: RISHA structures have been shown to withstand earthquake loads up to zone six, making them an ideal solution for earthquake-prone areas in Indonesia. Additionally, RISHA's precast modular components can be easily assembled and disassembled, reducing the risk of damage and facilitating rapid reconstruction.

Q: How does the analysis of mass participation and time of natural vibration contribute to the overall structural resistance of RISHA structures?

A: The analysis of mass participation and time of natural vibration helps to determine the structural stability of RISHA structures during seismic events. By ensuring that the structure's mass participation is above 90% and its natural frequency is within the acceptable range, RISHA structures can maintain their structural integrity even under extreme conditions.

Q: What are the key findings of the structural resistance analysis, and how do they impact the overall structural integrity of RISHA structures?

A: The structural resistance analysis revealed that the basic shear force on the x and y axes reaches 190.39 kN, exceeding the minimum requirements stipulated by SNI 2847 (2019) and SNI 7833 (2019). This indicates that RISHA structures can withstand significant earthquake loads without compromising their structural integrity.

Q: How does the floor deformation analysis contribute to the overall structural resistance of RISHA structures?

A: The floor deformation analysis revealed that the deformation between floors due to earthquake loads is within the acceptable range, meeting the requirements stipulated by SNI. This indicates that RISHA structures can maintain their structural integrity even under extreme seismic conditions.

Q: What are the key limitations of this study, and how can they be addressed in future research?

A: The study has several limitations, including ideal conditions, limited scope, and small sample size. To address these limitations, future research should focus on large-scale testing, material properties, and construction processes to validate the findings and improve the structural resistance of RISHA structures.

Q: What are the potential applications of RISHA technology in earthquake-prone areas, and how can it contribute to disaster resilience?

A: RISHA technology has the potential to be applied in various types of buildings in Indonesia, particularly in earthquake-prone areas. By providing a structurally resistant and cost-effective solution, RISHA can contribute to disaster resilience and reduce the risk of damage and loss of life.

Q: What are the next steps for further development and implementation of RISHA technology?

A: The findings of this study provide a solid foundation for further development and implementation of RISHA technology. Future research should focus on large-scale testing, material properties, and construction processes to validate the findings and improve the structural resistance of RISHA structures. Additionally, the Indonesian government and construction industry should work together to promote the adoption of RISHA technology in earthquake-prone areas.

Q: How can readers access the full report and learn more about RISHA technology?

A: The full report is available upon request, and readers can learn more about RISHA technology by contacting the authors or visiting the website of the Indonesian National Standard (SNI).