For over 50 years, research on piles under uplift loads has primarily focused on single piles with less attention paid to the group capacity and efficiency of pile groups embedded in sand. Methods can be grouped into analytical, semi-empirical (combining theoretical and experimental methods) and experimental methods. However, these methods do not always account for the effect of the influence zone of an individual pile within the group, the interaction mechanism within the group and the combined shape of the group during the application of an uplift load. Despite decades of research in this area, these pile group actions are still not clearly understood. This study investigated the influence zone of a single micro-pile under uplift loads and the effect of pile spacing to diameter ratio (s/d) on the behavior within a pile group. A hybrid approach combining analytical method and numerical analysis were used which resulted a block shaped influence zone when an uplift load was applied at close pile spacing.