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  1. Answer the questions to part V:

1. What envelope do most skyscrapers have?

2. Why is this project unusual?

3. What is creating a four-story plenum?

4. Where is the air intake at the 50th floor?

5. How is the air exhausted?

6. Why are all the dormers in a vertical position?

7. Why are the actual wind loads on the building higher than on nearby skyscrapers?

8. Where do the biggest winds in Manhattan tend to come from?

9. Is the roof structure used as a penthouse for residents?

10. Why wasn’t scaffolding used for the roof construction?

11. What mechanisms were used to lift copper sheets?

12. Who designed and fabricated the copper roof panels?

13. How is the access to the lighting equipment provided?

14. What was tested for wind loads and air filtration?

15. How are the copper panels held?

16. What is reached directly from the arcade?

17. What was another function of the plaza?

18. What was necessary to construct before the fountain and vehicular drive?

19. Where is the roof of the theatres?

20. What frame parts of the underground structure?

21. What will the plaza have?

22. What do the 30-ft-high pavilions provide?

23. Why will the commercial tower be washed with lights?

24. What will the roof-top pyramid become?

Comprehension check

  1. Decide whether the following statements are true or false according to the text:

1. The commercial-residential complex in Manhattan is an added notch to a city skyline.

2. The structure was demolished and replaced with a surface parking.

3. Rockefeller Center and World Wide Plaza differ in functions.

4. Both plazas can be reached from two directions.

5. Excavation and foundation contractor had many obstacles in the excavation process.

6. The subway entrance was covered with graffiti.

7. The superstructure consists of an exterior tube with a braced frame at the core.

8. The arcade’s granite-clad prefabricated columns saved money on labour and time.

9. Transferring the loads over a couple of stories can be seen from the exterior.

10. The rigid frame couldn’t be interrupted because of wind stresses.

11. It is a lot easier to make a moment connection by welding in the shop.

12. The steel framing that surrounds the tube in a wedding cake pattern at the building’s base does not add to it’s stability.

13. This building has an impermeable envelope.

14. The air is exhausted through the dormers at the top of the roof.

15. The actual wind loads on the commercial tower will be lower than they are on nearby skyscrapers.

16. The roof was panelized to be installed like a curtain wall from the interior.

17. The copper roof panels had to be equipped with doors to provide access to the lighting equipment to illuminate the roof.

18. The project’s six theatres construction was a priority.

19. To support the plaza weight four heavy girders framed parts of the underground structure.

20. The commercial tower will be washed with lights to be protected from flying aircrafts.

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