The table assembly comprises a first side wall, a second side wall, a first table top and a first support. The first side wall comprises a plurality of first side wall mortises. The second side wall comprises a plurality of second side wall mortises. The first table top comprises at least one first table top tenon. The first support comprises two first support tenons. The method comprises: coupling the first support to the first side wall by coupling one of the first support tenons to the first side wall mortise; coupling the first support to the second side wall by coupling another one of the first support tenons to the second side wall mortise; and coupling the first table top to the first side wall via coupling the first table top tenon to the first side wall mortise, wherein the first table top is supported by the first support.