Earthquake
Damage Assessment  Solution
An
earthquake on the Twin Fork Fault affected Hazard City in 1897. The earthquake
produced effects in the town that can be rated on the Modified Mercalli
Intensity Scale.
The Earthquake Damage Assessment project was a simple
percentage problem. Your goal was to estimate the number of people in
five neighborhoods who would need emergency housing if a similar earthquake
would occur today.
Residential Neighborhood 
Percentage of homes uninhabitable 
Number of People Needing
Emergency Housing 
Downtown 
70% 
1362 
Hickory States 
6%7% 
448512 
Ralston 
7%8% 
4451 
Riverside 
90% 
394 
Walnut Heights 
1%2% 
2448 
This
required a fourstep process:
You
could find the population of each neighborhood by clicking that neighborhood
on the city map and reading the community profile 
The
community profile also contained information about the types of houses
present in the neighborhood 
Clicking
on "Building Response" allowed you to look up the percentage
of different building types that would be uninhabitable after a IX
Mercalli event 
Finally,
you multiply the percentage of uninhabitable dwellings by the population
of the neighborhood. That number should be your estimate of the number
of people needing emergency housing 

