1. Architectural Structures Arch 241 Fall 2016 Professor Pieter Sijpkes

2. What is required of an architectural structure
What is required of an architectural structure? : the three S's: Strength, Stiffness, Stability “fasteners are no joke”

3. Stiffness and strength, no problem here. stability is
Stiffness and strength, no problem here.. stability is. Strength and stability ok.. stiffness is, by design, very low Strength and stability no problem, stiffness is, by design, very high

4. Links Strength: Citicorp Building NY http://99percentinvisible
Links Strength: Citicorp Building NY New Yorker Article
Jan Knippers:
Marc Kushner: media and architecture

5. Trap door fabrication:
Catching bugs:

6. With the increasing height in buildings, stiffness, rather than strength or stability becomes the main problem.

7. Introduction to structure
Introduction to structure . To understand structure you have to feel the forces (distributed loads in this case)
“Charly bit me” video
to understand point loads

8. and/or act it out: Beaux Arts ball New York City 1931

9. WilliamVan Alen, and the Chrysler Tower NYC

10. Chrysler building close-up and a model of the top by showgirls under direction of Busby Berkeley in the 1930's
William Van Alen was called ‘the Ziegfeld of Architecture’ by a contemporary,
referring to the Ziegfeld Follies”.

11. The Firth of Forth bridge in Scotland

12. A historical demonstration at Imperial College in 1887 showing the weight of the central span of the bridge being transmitted to the banks through diamond shaped supports. The central "weight" is Kaichi Watanabe, one of the first Japanese engineers who came to study in the UK. Sir John Fowler and Benjamin Baker , the engineers of the bridge form the cantilever arms.

15. a very nice paper about the bridge and another and a whole excellent book on-line an very excellent overview of architectural/engineering structures Bridge structure classification next link
a very nice paper about the bridge