additional reinforcements and without the need for a continuous foundation footing it should be appreciated that virtually any size wall structure 10 could be constructed depending on the size of the building in which the wall structure 10 is to be used focusing now on the vertical main section 12 it is seen that it includes two concrete panels 18 20 that sandwich a series of insulation boards 22 each concrete panel 18 20 is reinforced with a reinforcing material such as an embedded wire mesh network 24 26 insulation boards 22 are constructed of a suitable rigid insulating material and as shown in fig2 do not extend throughout the full height of main section 12 the insulation boards 22 are typically rectangular and are spaced apart from each other as will be explained later the lower portion of the main section 12 does not have insulation therefore the lower portions of the first and second concrete panels 18 20 merge together to form a lower horizontal beam 15 here the concrete is continuous and solid between outer surfaces 31 and 33 this lower horizontal beam 15 is reinforced by lower reinforcing members 28 which may be steel reinforcing bars at the bottom of the lower horizontal beam 15 is the lower unsupported edge 30 this edge 30 extends between spaced apart footings 11 and need not rest on a continuous foundation as do typical wall panels embedded in the lower horizontal beam 15 are steel connection plates 32 for connecting the wall structure 10.