No, the landfilled earth will turn into a liquid, briefly, during a big earthquake and the buildings will sink into them. https://en.wikipedia.org/wiki/Soil_li

No, the landfilled earth will turn into a liquid, briefly, during a big earthquake and the buildings will sink into them. https://en.wikipedia.org/wiki/Soil_liquefaction https://en.wikipedia.org/wiki/Soil_liquefaction