Foundations that are subjected to dynamic loads such as vibrations tend to experience excessive settlement, especially when resting on sandy soils. Ground improvement techniques like geogrid reinforcement can effectively mitigate these effects. The effect of vertical vibrational loads on a foundation resting on sandy soil was numerically examined by analysing soil models using Finite Element Method. The analysis considered a foundation resting on sand and subjected to vertical vibrations induced by a mechanical oscillator. Two defined sections above and below the geogrid layer were taken into consideration to examine the settlement caused by different loading conditions. It was observed that in the case of foundation, with increasing frequency of vibration, settlement increases within considered frequency range. Inclusion of geogrid reinforcement drastically reduces the settlement. With increasing stiffness of geogrid, settlement decreases. Furthermore, improved angle of friction also leads to less settlement due to dynamic loading.