A block for use in a building panel includes a plurality of layer components. Each of the layer components is separately formed from the others. Each of the layer components provides a load-bearing support function, an environmental protection function, and/or a utility function. The constructive material used to form each of the layer components and a configuration of each of the layer components are selected so as to allow the building panel to meet at least one predetermined criteria when the block is disposed in the building panel and coupled to other blocks.