Lesson 34: Why Approximate Methods Rock

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Lesson 34 Why Approximate Methods Rock

• CE311 Fall 2007
• November 14th 2007

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Woolworth Building

• Worlds Tallest
• 1913 to 1930

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Chrysler Building

• Worlds Tallest
• 1930 to 1931

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Empire State Building

• Worlds Tallest
• 1931 to 1972

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Built 1930
Built 1913

• Built 1931

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Indeterminate Frame Analysis Invented in 19??
Built 1930
Built 1913

• Built 1931

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Indeterminate Frame Analysis Invented in 1932
Built 1930
Built 1913

• Built 1931

1932
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Indeterminate Frame Analysis Invented in 1932
These Designers Had Guts! They used guesses,
hunches, and WAGs to design 1250 tall
skyscrapers Do you have that kind of guts?
Built 1930
Built 1913

• Built 1931

1932
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Until 1970.

• Most buildings were designed with guts, guesses,
  and hunches

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Until 1970.

• Most buildings were designed with guts, guesses,
  and hunches
• Approximate Methods
• (todays lesson)

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Until 1990.

• Many buildings still designed using guts,
  guesses, and hunches

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Until 1990.

• Many buildings still designed using guts,
  guesses, and hunches
• Approximate Methods
• (todays lesson)