an insulated concrete structure including a side panel , a spaced - apart sheet such as plywood , and concrete disposed therebetween . the concrete is poured into a cavity formed between the side panel and the sheet and allowed to substantially cure , after which time the sheet can remain as part of the structure or be removed and used again in forming another concrete structure . it is noted that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to ascertain quickly the subject matter of the technical disclosure . the abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims pursuant to 37 c . f . r . § 1 . 72 .