aac e g ytong u00ae building blocks more preferablyan aac block thus providing improved thermal and sound insulation the external panel 2 may be constructed of blocks of various sizes depending on the technical requirements of the structure according to an embodiment of the invention wherein the external panel is not constructed of blocks there may be a need to insert a vertical layer of insulating material within the core non limiting examples of suitable insulating materials include polymeric materials such as foaming polystyrene the internal panel 3 is supported on a support structure 4 non limiting examples of suitable materials for said internal panel include rock sheet gypsum board wood panel and polymeric materials the support structure 4 and internal panel 3 are positioned parallel to the external panel 2 and at a distance such that a hollow space is formed between the internal panel 3 and external panel 2 into which the concrete is cast 8 the distance between the internal panel 3 and external panel 2 is adjusted according to the structural requirements the support structure 4 is preferably constructed of horizontal and vertical beams non limiting examples of suitable materials for said support structure include steel aluminum or wood preferably steel the steel reinforcement 5.