Where liquefaction is not a concern, they should be stiff and not prone to differential settlements. Usually, slabs or grillages with large and thick beam elements. Also, resistance to lateral sliding should be checked. For more important buildings, the 6 dynamic impedances should be checked. Where liquefaction is a concern, deep foundations may be used, or some variations of deep foundations, unless soil is engineered (improved), both solutions are costly.

Raul Jimenez
Senior Project Manager