Final answer:
Steel with infill masonry offers increased strength and stiffness, improved fire resistance, and enhanced seismic performance.
Step-by-step explanation:
Steel with infill masonry offers several performance characteristics:
- Increased strength and stiffness: Steel provides additional strength and stiffness to the masonry walls, enhancing the overall structural integrity.
- Improved fire resistance: Steel has high fire resistance, which can help protect the building in the event of a fire.
- Enhanced seismic performance: The combination of steel and masonry can provide better resistance to seismic forces, making the structure more resilient during earthquakes.
Therefore, the correct answer is 4) All of the above.