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Welcome to Earthquake Engineering

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Presentation on theme: "Welcome to Earthquake Engineering"— Presentation transcript:

1 Welcome to Earthquake Engineering
What is civil engineering? What is structural engineering? February 25, 2017

2 What is Structural Engineering?
Building structures… with respect for forces of nature What are these forces?

3 What is Structural Engineering?
Building structures… with respect for forces of nature Water Soil Wind Seismic

4 What is Structural Engineering?
Building structures… with respect for forces of nature Water Soil Wind Seismic

5 What is Structural Engineering?
Building structures… with respect for forces of nature Water Soil Wind Seismic

6 What is Structural Engineering?
Building structures… with respect for forces of nature Water Soil Wind Seismic

7 What is an Earthquake? Earthquakes are one of the dynamic loads that structural engineers worry about. If a building is not designed or constructed to perform well during an earthquake, people’s lives and property are in danger

8 Why Care About Earthquakes?

9 Why Care About Earthquakes?

10 What Can We Do? Hazard maps (what dynamic loads will it encounter)
Building plan (what do the clients want, and how will those elements be supported) Building codes and standards that say how a building should be designed Site conditions (what is ground like underneath the structure)

11 What Do We Need to Know? STATICS DYNAMICS COST SAFETY
Statics = weight of the building and its contents Dynamics = outside forces that push on or down on the building (snow, wind, earthquakes) Cost = Materials Safety = Who uses the building, what risks will it face

12 How Will We Design Our Buildings?
Load path = how will the loads travel through your structure Lateral force resistance = what resists the forces coming sideways

13 Today’s Activity Your Task: Design a marshmallow building to perform well during a human-powered earthquake

14 Today’s Activity Client Needs Aesthetic Appeal Static Performance
Minimum height = 12 inches Floor area fits onto site plan Aesthetic Appeal Visually interesting Static Performance Resists gravity load Dynamic Response Resists earthquake load

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