1、疑問句：What is the difference between steel and iron in terms of strength and durability?

回答：Steel has a higher strength-to-weight ratio than iron, making it more durable and resistant to corrosion. Steel also has better ductility, meaning it can stretch without breaking, whereas iron tends to be brittle.

2、疑問句：How does the application of welding technology affect the structural integrity of steel structures?

回答：Welding technology plays a crucial role in ensuring the structural integrity of steel structures by creating strong, seamless connections between different parts of the structure. Proper welding techniques and materials used can prevent defects such as cracks, delaminations, and lack of penetration, which could compromise the structural integrity and lead to failure.

3、疑問句：What safety measures should be implemented during the construction process of steel structures?

回答：Safety measures should be implemented during the construction process of steel structures to ensure the well-being of workers and minimize any potential hazards. This includes using personal protective equipment (PPE), following proper site layout and design, conducting regular inspections, and implementing emergency response plans. It is also important to adhere to safety codes and regulations established by relevant authorities.

4、疑問句：What are some common challenges faced by steel structures in harsh environments?

回答：Common challenges faced by steel structures in harsh environments include corrosion, wear and tear due to weather conditions, and seismic forces. Corrosion can occur when exposed to saltwater or other aggressive chemicals, leading to the formation of pitting or crevice corrosion. Wear and tear can result from exposure to extreme temperatures, heavy loads, or impacts from debris or foreign objects. Seismic forces can cause damage to the structure, including bending, shear, and buckling. To mitigate these challenges, appropriate coatings, joint designs, and material selections can be employed.

5、疑問句：How do modern steel structures compare to traditional timber structures in terms of sustainability?

回答：Modern steel structures offer several advantages over traditional timber structures in terms of sustainability. For example, steel is a recyclable material that can be reused after its useful life, while timber requires significant amounts of energy to recycle. Additionally, steel structures