1.What does the design of horizontal circulation determine?
The horizontal circulation determine the basic shape and character of the entire structure.

2.What are the four practical requirements of any horizontal circulation system mentioned in the lecture?

It has to be adequate in size.
The circulation should work well in either direction.
Points of converging traffic must be expressed.
Changes in level most be clearly express.

3.What are the three examples (names of buildings) mentioned by Prof. Watanabe to illustrate different horizontal circulation patterns?

Pennsylvania Station, NY
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Centro Soyuz Building, Le Corbusier, Moscow
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Justice Palace, Paris
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4.Why is the concept of Horizontal Circulation important in any urban plan or architectural design?
The horizontal circulation is so important at time to create because is functional and esthetic value. It´s necesary establishing the relationship between the parts and the whole.