Patent ID: 8454337

Claim:
An assembly for making a poured septic tank, said assembly comprising: (a) a plurality of members each selectively, detachably securable to one or more other said members so as to form an assembled plug around which concrete may be poured and hardened when said assembled plug is positioned in a surrounding enclosure, said assembled plug defining a first opening into said plug; (b) a retainer positionable proximate a top surface of an assembled said plug, said retainer capable of retaining hardenable fluid material away from said first opening while said plug is immersed in said hardenable fluid material, said retainer defining a second opening of an area less than that of said top surface but sufficient to allow at least one of said members to pass through said second opening; and (c) a brace member positionable vertically above the assembled said plug and capable of simultaneously pushing said plug to maintain said submerged position while also maintaining an elevated position of said plug with respect to a bottom surface of said surrounding enclosure, where said brace member may be separated from said plug after said hardenable fluid material has hardened.