Natural edged communal tables are typically 7-16 ft long, 2.5-3.5 ft wide and often 42” tall. 42” is a nice height for sitting on a standard 30” stool as well as for standing.
The tall table allows one to wander up and socialize with those who are sitting, without feeling like you are imposing. It also increases capacity.
Their narrow nature allows for conversation with those seated across from you in a busy atmosphere.