I have a question on Ballast Question #93. In this "choose all that are true" type of question, the answer says that the statement, "A building's acceleration is generally greater on dense soil than it is on soft soil," is false. However, I really thought that this statement is true. From studying, I've learned that soft soil causes a longer building period, which relates to a lower acceleration and therefore, a smaller seismic force. Wouldn't this mean that if a building is on dense soil that it has a high acceleration?
If not, what part(s) of the assumptions I'm making above are incorrect?
Any guidance is appreciated!