The increase in population demands new cities and buildings which can be affected by natural disasters like earthquakes. Researchers try to evaluate the earthquake’s influences on building foundations experimentally using manufactured devices like shaking tables and centrifuge equipment. Shallow foundations resting on dry and saturated cohesionless soils experienced excess settlement and bearing capacity failures during earthquakes due to liquefaction. Some researchers tried to use methods to improve the affected soils to mitigate the earthquake effects. Sandy soils of different relative densities were used in the tests besides various magnitudes and peak ground accelerations (PGA) of earthquakes. The paper’s objective is to demonstrate some of the experimental works on different soil sand relative densities and raft foundation models using various devices in types and sizes to examine the effect of earthquakes in addition to experimental methods to improve sand.