Posted by: Kiddo April 30, 2015
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"Keep in mind 9 Richter scale is just 1.1 level above 7.9R."
Hope you realize that a Richter Scale (RS) is 10-base Logarithmic scale. So 9 RS is more than 10 times 7.9 RS. That's a significant difference, beyond the margin of difference you are referencing. If a house is built for 9 RS, it shouldn't crack at the load-bearing pillars, even when the quake is as shallow as the last one.
Hope you realize that a Richter Scale (RS) is 10-base Logarithmic scale. So 9 RS is more than 10 times 7.9 RS. That's a significant difference, beyond the margin of difference you are referencing. If a house is built for 9 RS, it shouldn't crack at the load-bearing pillars, even when the quake is as shallow as the last one.