Earthquake in China

Yesterday, an earthquake occured in southwestern China, measuring 7.6 on the Richter scale at around 2 PM. Today, nearly 10,000 people have been confirmed dead. The earthquake could be felt even in Bangkok although I didn't feel anything (I work on the 36th Fl). I was actually downstairs eating lunch then. Employees who felt the earthquake recounted that the floor started shaking and that the buildings had to be evacuated. So who would have a better chance of survival if the building crumbled? Somebody on the lower floors or higher floors?