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1. Why is the office block important?

2. How was the required cost and speed of construction achieved?

3. How many area modules is the building made up of up to the level 50?

4. How does the number of the area modules change at the upper levels?

5. What does the basement structure feature?

6. What does the framed tube of each module consist of?

7. What are the two and four-level trusses used for?

8. Why is the span direction of the trusses altered every six floors?