Understanding Seismic Zones

US Geology Survey National Seismic Hazard Map —These maps are based on current information about the rate at which earthquakes occur in different areas and on how far strong shaking extends from earthquake sources. Colors on this particular map show the levels of horizontal shaking that have a 2 % chance of being exceeded in a 50 year period. Shaking is express as a percentage of g (g is the acceleration of a falling object due to gravity). Areas in red have a much higher likelihood than areas of white to be exceeded, for example.

US Geology Survey National Seismic Hazard Map —These maps are based on current information about the rate at which earthquakes occur in different areas and on how far strong shaking extends from earthquake sources. Colors on this particular map show the levels of horizontal shaking that have a 2 % chance of being exceeded in a 50 year period. Shaking is express as a percentage of g (g is the acceleration of a falling object due to gravity). Areas in red have a much higher likelihood than areas of white to be exceeded, for example.

Built using 21st Century technology, Monolithic Domes are a paradigm shift in construction.

Built using 21st Century technology, Monolithic Domes are a paradigm shift in construction.

Dr. Arnold Wilson, a leading engineer in thin shell concrete construction, has said, “It is easy to see that earthquake forces do not even approach the design strength the Monolithic Dome is built to withstand under normal every day usage. It would take an external force much larger than an earthquake to approach the design strength of the concrete itself.”

Dr. Arnold Wilson, a leading engineer in thin shell concrete construction, has said, “It is easy to see that earthquake forces do not even approach the design strength the Monolithic Dome is built to withstand under normal every day usage. It would take an external force much larger than an earthquake to approach the design strength of the concrete itself.”