Minimum thickness of load-bearing RCC wall should be 10 cm.

Explanation:
The thickness of an RCC (Reinforced Cement Concrete) wall is an important factor to ensure its strength and stability. It depends on various factors such as the height of the wall, the type and magnitude of the load it will bear, the quality of materials used, and the design considerations.

Key Points:
- Load-bearing RCC walls are designed to bear the load of the structure above them and transfer it to the foundation.
- The thickness of the wall is directly related to its strength and ability to withstand the load without failure.
- A thicker wall is generally stronger and more resistant to bending, cracking, and structural failure.
- The Indian Standard Code for RCC structures (IS 456:2000) provides guidelines for the minimum thickness of load-bearing walls.
- According to the code, the minimum thickness of a load-bearing RCC wall should be 10 cm.
- This minimum thickness ensures adequate strength and stability for most common residential and small commercial structures.
- However, it is important to note that the thickness of the wall may need to be increased based on specific design requirements and load conditions.
- Factors such as the height of the wall, the type of load (dead load, live load, wind load, etc.), and the quality of materials used may necessitate a thicker wall.
- Additionally, the structural design of the wall, including the reinforcement detailing, plays a crucial role in determining its strength and thickness.
- It is always recommended to consult a structural engineer or follow the guidelines of the local building codes to determine the appropriate thickness of a load-bearing RCC wall for a specific project.

In conclusion, the minimum thickness of a load-bearing RCC wall should be 10 cm as per the Indian Standard Code. However, it is essential to consider other factors and consult a professional engineer for accurate design and construction.